Gotowe bibliografie tematyczne / Nonlinear site response analysis

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Gotowa bibliografia na temat „Nonlinear site response analysis”

Autor: Grafiati

Data publikacji: 6 września 2023

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Artykuły w czasopismach na temat "Nonlinear site response analysis"

Tsai, Chi-Chin, i Chun-Way Chen. "Comparison Study of One-Dimensional Site Response Analysis Methods". Earthquake Spectra 32, nr 2 (maj 2016): 1075–95. http://dx.doi.org/10.1193/071514eqs110m.

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The ground responses computed via frequency domain (FD) equivalent linear (EQL) and time domain (TD) nonlinear (NL) methods can considerably differ because of the constitutional differences in numerical approaches, damping formulations, and modeling of nonlinear soil response. To systematically evaluate the TD-NL and FD-EQL approaches, this study performs TD-NL, TD-EQL, and FD-EQL site response analyses considering different input motions, intensities of input motions, depths of soil columns, and nonlinear properties. Results show that the differences in the site responses calculated by the two approaches are highly influenced by dynamic soil properties, the significant nonlinearities of which (e.g., sand) tend to magnify such differences and the high damping of which tend to mitigate the differences. An amplification factor by TD-NL exhibits more nonlinearity than that by FD-EQL but agrees well with the nonlinearity in the 2015 NEHRP site factor, indicating that TD-NL is a better method than FD-EQL for modeling soil nonlinear behavior.

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Larkin, Tam, i John Marsh. "Two dimensional nonlinear site response analyses". Bulletin of the New Zealand Society for Earthquake Engineering 25, nr 3 (30.09.1992): 222–29. http://dx.doi.org/10.5459/bnzsee.25.3.222-229.

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This paper presents the results of computer studies of the seismic site response of two dimensional alluvial valleys with a variety of geometries and material properties. The alluvial material is modelled as a nonlinear hysteretic solid and results are presented to illustrate the effect of material nonlinearity on surface ground response. Comparative studies with one dimensional analyses are presented and conclusions drawn as to ground conditions that are appropriate to one dimensional site analyses.

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Lu, Tao, Yu Lin Lu i Jing Yan Huo. "1D Time-Domain Nonlinear Analysis of Site Response under Strong Motion". Applied Mechanics and Materials 94-96 (wrzesień 2011): 1833–37. http://dx.doi.org/10.4028/www.scientific.net/amm.94-96.1833.

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The Equivalent Linear Method is a common way used in earthquake engineering to analyze nonlinear site seismic response, but the response under strong motion is underestimated by the way. For analyzing nonlinear response more veritably, in the study, a time-domain nonlinear analysis method was proposed and used in a case for 1D seismic response analysis of soil layers under strong motion. The results obviously showed that, comparing with true nonlinear method, the Equivalent Linear Method underestimated in the case in natural period range of common civil engineering structures. The true nonlinear method adopted in the study is more fitful for nonlinear response of soil layers under strong motion.

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Chen, Guoxing, Dandan Jin, Jiao Zhu, Jian Shi i Xiaojun Li. "Nonlinear Analysis on Seismic Site Response of Fuzhou Basin, China". Bulletin of the Seismological Society of America 105, nr 2A (3.02.2015): 928–49. http://dx.doi.org/10.1785/0120140085.

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PARK, DUHEE, i YOUSSEF M. A. HASHASH. "SOIL DAMPING FORMULATION IN NONLINEAR TIME DOMAIN SITE RESPONSE ANALYSIS". Journal of Earthquake Engineering 8, nr 2 (marzec 2004): 249–74. http://dx.doi.org/10.1080/13632460409350489.

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Arslan, Haydar, i Bilge Siyahi. "A comparative study on linear and nonlinear site response analysis". Environmental Geology 50, nr 8 (28.04.2006): 1193–200. http://dx.doi.org/10.1007/s00254-006-0291-4.

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Tran, Ngoc-Long, Muhammad Aaqib, Ba-Phu Nguyen, Duy-Duan Nguyen, Viet-Linh Tran i Van-Quang Nguyen. "Evaluation of Seismic Site Amplification Using 1D Site Response Analyses at Ba Dinh Square Area, Vietnam". Advances in Civil Engineering 2021 (28.08.2021): 1–11. http://dx.doi.org/10.1155/2021/3919281.

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This study presents a case study on ground response analysis of one of the important cultural heritages in Hanoi, Vietnam. One-dimensional nonlinear and equivalent linear site response analyses which are commonly applied to solve the problem of seismic stress wave propagation are performed at the Ba Dinh square area. A measured in-situ shear wave velocity profile and corresponding geotechnical site investigation and laboratory test data are utilized to develop the site model for site-specific ground response analysis. A suite of earthquake records compatible with Vietnamese Design Code TCVN 9386: 2012 rock design spectrum is used as input ground motions at the bedrock. A few concerns associated with site-specific ground response evaluation are analyzed for both nonlinear and equivalent linear procedures, including shear strains, mobilized shear strength, and peak ground acceleration along with the depth. The results show that the mean maximum shear strains at any soil layer are less than 0.2% in the study area. A deamplification portion within the soil profile is observed at the layer interface with shear wave velocity reversal. The maximum peak ground acceleration (PGA) at the surface is about 0.2 g for equivalent linear analysis and 0.16 g for nonlinear analysis. The ground motions are amplified near the site natural period 0.72 s. The soil factors calculated in this study are 1.95 and 2.07 for nonlinear and equivalent linear analyses, respectively. These values are much different from the current value of 1.15 for site class C in TCVN 9386: 2012. A comparison of calculated response spectra and amplification factors with the local standard code of practice revealed significant discrepancies. It is demonstrated that the TCVN 9386: 2012 soil design spectrum is unable to capture the calculated site amplification in the study area.

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Tian, Li, Yanming Wang, Zhenhua Yi i Hui Qian. "A Parametric Study of Nonlinear Seismic Response Analysis of Transmission Line Structures". Scientific World Journal 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/271586.

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A parametric study of nonlinear seismic response analysis of transmission line structures subjected to earthquake loading is studied in this paper. The transmission lines are modeled by cable element which accounts for the nonlinearity of the cable based on a real project. Nonuniform ground motions are generated using a stochastic approach based on random vibration analysis. The effects of multicomponent ground motions, correlations among multicomponent ground motions, wave travel, coherency loss, and local site on the responses of the cables are investigated using nonlinear time history analysis method, respectively. The results show the multicomponent seismic excitations should be considered, but the correlations among multicomponent ground motions could be neglected. The wave passage effect has a significant influence on the responses of the cables. The change of the degree of coherency loss has little influence on the response of the cables, but the responses of the cables are affected significantly by the effect of coherency loss. The responses of the cables change little with the degree of the difference of site condition changing. The effect of multicomponent ground motions, wave passage, coherency loss, and local site should be considered for the seismic design of the transmission line structures.

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Su, Jie, Zhenghua Zhou, You Zhou, Xiaojun Li, Qing Dong, Yafei Wang, Yuping Li i Liu Chen. "The Characteristics of Seismic Response on Hard Interlayer Sites". Advances in Civil Engineering 2020 (25.06.2020): 1–11. http://dx.doi.org/10.1155/2020/1425969.

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Based on the engineering geological data of a nuclear power plant site, nine engineering geological profiles were created with hard interlayers of different thicknesses. The equivalent linearization method of seismic motion segment-input used for one-dimensional nonlinear seismic response analysis was applied to study the effect of the interlayer thickness on the peak acceleration and the acceleration response spectra of the site seismic response. The results showed that there was an obvious influence of hard interlayer thickness on site seismic responses. With the increase of hard interlayer thickness, the site nonlinear effect on seismic responses decreased. Under the same thickness of the hard interlayer, the nonlinear effect of the site was strengthened with the higher input peak acceleration. In addition, the short-period acceleration response spectrum was found to be significantly influenced by the hard interlayer and showed that the longer the period, the less influence of the hard interlayer on the acceleration response spectrum coordinates. Moreover, the influenced frequency band was wider with the increase in the thickness of hard interlayer.

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Phillips, Camilo, i Youssef M. A. Hashash. "Damping formulation for nonlinear 1D site response analyses". Soil Dynamics and Earthquake Engineering 29, nr 7 (lipiec 2009): 1143–58. http://dx.doi.org/10.1016/j.soildyn.2009.01.004.

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Rozprawy doktorskie na temat "Nonlinear site response analysis"

Jeong, Seokho. "Topographic amplification of seismic motion including nonlinear response". Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50325.

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Topography effects, the modification of seismic motion by topographic features, have been long recognized to play a key role in elevating seismic risk. Site response, the modification of ground motion by near surface soft soils, has been also shown to strongly affect the amplitude, frequency and duration of seismic motion. Both topography effects and 1-D site response have been extensively studied through field observations, small-scale and field experiments, analytical models and numerical simulations, but each one has been studied independently of the other: studies on topography effects are based on the assumption of a homogeneous elastic halfspace, while 1-D site response studies are almost exclusively formulated for flat earth surface conditions. This thesis investigates the interaction between topographic and soil amplification, focusing on strong ground motions that frequently trigger nonlinear soil response. Recently, a series of centrifuge experiments tested the seismic response of single slopes of various inclination angles at the NEES@UCDavis facility, to investigate the effects of nonlinear soil response on topographic amplification. As part of this collaborative effort, we extended the search space of these experiments using finite element simulations. We first used simulations to determine whether the centrifuge experimental results were representative of free-field conditions. We specifically investigated whether wave reflections caused by the laminar box interfered with mode conversion and wave scattering that govern topographic amplification; and whether this interference was significant enough to qualitatively alter the observed amplification compared to free-field conditions. We found that the laminar box boundaries caused spurious reflections that affected the response near the boundaries; however its effect to the crest-to-free field spectral ratio was found to be insignificant. Most importantly though, we found that the baseplate was instrumental in trapping and amplifying waves scattered and diffracted by the slope, and that in absence of those reflections, topographic amplification would have been negligible. We then used box- and baseplate-free numerical models to study the coupling between topography effects and soil amplification in free-field conditions. Our results showed that the complex wavefield that characterizes the response of topographic features with non-homogeneous soil cannot be predicted by the superposition of topography effects and site response, as is the widespread assumption of engineering and seismological models. We also found that the coupling of soil and topographic amplification occurs both for weak and strong motions, and for pressure-dependent media (Nevada sand), nonlinear soil response further aggravates topographic amplification; we attributed this phenomenon to the reduction of apparent velocity that the low velocity layers suffer during strong ground motion, which intensifies the impedance contrast and accentuates the energy trapping and reverberations in the low strength surficial layers. We finally highlighted the catalytic effects that soil stratigraphy can have in topographic amplification through a case study from the 2010 Haiti Earthquake. Results presented in this thesis imply that topography effects vary significantly with soil stratigraphy, and the two phenomena should be accounted for as a coupled process in seismic code provisions and seismological ground motion predictive models.

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Eshun, Kow Okyere. "Quantification of the Effects of Soil Uncertainties on Nonlinear Site Response Analysis: Brute Force Monte Carlo Approach". University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1367510751.

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Schaedlich, Mirko. "Nonlinear transient structural response analysis". Thesis, University of Southampton, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.438667.

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Karbassi, A. A. "Nonlinear response analysis of guyed masts". Thesis, University of Westminster, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376451.

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Lessi, Cheimariou Angeliki. "Optimal treatment of nonlinear site response through a set of novel methodologies". Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/30818.

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Different methods of analysis, such as site-specific site response analysis or the use of ground-motion prediction equations can be adopted to account for the modification of the seismic ground-motion by the near-surface stratigraphy. Each approach is associated with a different degree of complexity and associated computational and temporal cost. This thesis identifies the main limitations of these methods as broadly employed in both academia and industry and suggests a new set of methodologies for their application. In the first part of the thesis ground-motion prediction equations and their ability to model response associated with site-specific soil layering is broadly assessed. Special emphasis is paid to the description and application of the Vs-κ_0 adjustment. This ensures that the response of a ground-motion model, particularly in the upper frequency range, is representative of the characteristics of a given site-specific shallow crustal profile. Then the effect of employing a standard deviation representative of a single site is examined. This is based on the removal of the site-ergodic assumption from the published standard deviations of the models. The effect on the hazard curves and any further implications of using this site-specific standard deviation is demonstrated by performing a Probabilistic Seismic Hazard Assessment. The second part of the thesis focuses on the main limitations and ranges of applicability of 1D site-specific site response analysis. Firstly, the Equivalent Linear approximation and the Nonlinear analysis for the constitutive modified model of Kodner and Zelasko (Matasovic and Vucetic, 1993) are tested for different magnitude-distance scenarios and strain ranges. The uncertainty in the different soil properties within site-specific site response analyses and their effect on the surface predictions is also quantified. As a result, a new set of period and soil-class dependent adjustment factors are developed which can be used as an alternative to approaches based upon randomisation of the dynamic soil properties. As part of the performed analyses, the potential bias introduced through the scaling of input motions, used in site response analysis, is addressed. Finally, the significance of using different reference depths within 1D site response analysis is considered. Consequently, through progressively more complicated parametric analyses, two new approaches, are established. These can be employed individually or in combination to select a depth for site investigation as well as a reference depth for site response analysis. Ultimately, the surface spectral ordinates obtained using site response analyses and ground-motion prediction equations are compared for an active tectonic region. Each of the previously developed methods is applied in the examined case study and the results are assessed against the traditional application of the methods. In addition, the surface predictions of each of the different methods of analysis are examined in relation to their uncertainty. This comparative analysis allows one to address the question of whether increased complexity in site-response analysis has a justifiable reward in terms of the reduction of uncertainty and also enables one to identify the most appropriate level of complexity to adopt for a given project.

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Wu, Chunquan. "Fault zone damage, nonlinear site response, and dynamic triggering associated with seismic waves". Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41143.

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My dissertation focuses primarily on the following three aspects associated with passing seismic waves in the field of earthquake seismology: temporal changes of fault zone properties, nonlinear site response, and dynamic triggering. Quantifying the temporal changes of material properties within and around active fault zones (FZ) is important for better understanding of rock rheology and estimating the strong ground motion that can be generated by large earthquakes. As high-amplitude seismic waves propagate through damaged FZ rocks and/or shallow surface layers, they may produce additional damage leading to nonlinear wave propagation effects and temporal changes of material properties (e.g., seismic velocity, attenuation). Previous studies have found several types of temporal changes in material properties with time scales of tens of seconds to several years. Here I systematically analyze temporal changes of fault zone (FZ) site response along the Karadere-Düzce branch of the North Anatolian fault that ruptured during the 1999 İzmit and Düzce earthquake sequences. The coseismic changes are on the order of 20-40%, and are followed by a logarithmic recovery over an apparent time scale of ~1 day. These results provide a bridge between the large-amplitude near-instantaneous changes and the lower-amplitude longer-duration variations observed in previous studies. The temporal changes measured from this high-resolution spectral ratio analysis also provide a refinement for the beginning of the longer more gradual process typically observed by analyzing repeating earthquakes. An improved knowledge on nonlinear site response is critical for better understanding strong ground motions and predicting shaking induced damages. I use the same sliding-window spectral ratio technique to analyze temporal changes in site response associated with the strong ground motion of the Mw6.6 2004 Mid-Niigata earthquake sequence recorded by the borehole stations in Japanese Digital Strong-Motion Seismograph Network (KiK-Net). The coseismic peak frequency drop, peak spectral ratio drop, and the postseismic recovery time roughly scale with the input ground motions when the peak ground velocity (PGV) is larger than ~5 cm/s, or the peak ground acceleration (PGA) is larger than ~100 Gal. The results suggest that at a given site the input ground motion plays an important role in controlling both the coseismic change and postseismic recovery in site response. In a follow-up study, I apply the same sliding-window spectral ratio technique to surface and borehole strong motion records at 6 KiK-Net sites, and stack results associated with different earthquakes that produce similar PGAs. In some cases I observe a weak coseismic drop in the peak frequency when the PGA is as small as ~20-30 Gal, and near instantaneous recovery after the passage of the direct S waves. The percentage of drop in the peak frequency starts to increase with increasing PGA values. A coseismic drop in the peak spectral ratio is also observed at 2 sites. When the PGA is larger than ~60 Gal to more than 100 Gal, considerably stronger coseismic drops of the peak frequencies are observed, followed by a logarithmic recovery with time. The observed weak reductions of peak frequencies with near instantaneous recovery likely reflect nonlinear response with essentially fixed level of damage, while the larger drops followed by logarithmic recovery reflect the generation (and then recovery) of additional rock damage. The results indicate clearly that nonlinear site response may occur during medium-size earthquakes, and that the PGA threshold for in situ nonlinear site response is lower than the previously thought value of ~100-200 Gal. The recent Mw9.0 off the Pacific coast of Tohoku earthquake and its aftershocks generated widespread strong shakings as large as ~3000 Gal along the east coast of Japan. I systematically analyze temporal changes of material properties and nonlinear site response in the shallow crust associated with the Tohoku main shock, using seismic data recorded by the Japanese Strong Motion Network KIK-Net. I compute the spectral ratios of windowed records from a pair of surface and borehole stations, and then use the sliding-window spectral ratios to track the temporal changes in the site response of various sites at different levels of PGA The preliminary results show clear drop of resonant frequency of up to 70% during the Tohoku main shock at 6 sites with PGA from 600 to 1300 Gal. In the site MYGH04 where two distinct groups of strong ground motions were recorded, the resonant frequency briefly recovers in between, and then followed by an apparent logarithmic recovery. I investigate the percentage drop of peak frequency and peak spectral ratio during the Tohoku main shock at different PGA levels, and find that at most sites they are correlated. The third part of my thesis mostly focuses on how seismic waves trigger additional earthquakes at long-range distance, also known as dynamic triggering. Previous studies have shown that dynamic triggering in intraplate regions is typically not as common as at plate-boundary regions. Here I perform a comprehensive analysis of dynamic triggering around the Babaoshan and Huangzhuang-Gaoliying faults southwest of Beijing, China. The triggered earthquakes are identified as impulsive seismic arrivals with clear P- and S-waves in 5 Hz high-pass-filtered three-component velocity seismograms during the passage of large amplitude body and surface waves of large teleseismic earthquakes. I find that this region was repeatedly triggered by at least four earthquakes in East Asia, including the 2001 Mw7.8 Kunlun, 2003 Mw8.3 Tokachi-oki, 2004 Mw9.2 Sumatra, and 2008 Mw7.9 Wenchuan earthquakes. In most instances, the microearthquakes coincide with the first few cycles of the Love waves, and more are triggered during the large-amplitude Rayleigh waves. Such an instantaneous triggering by both the Love and Rayleigh waves is similar to recent observations of remotely triggered 'non-volcanic' tremor along major plate-boundary faults, and can be explained by a simple Coulomb failure criterion. Five earthquakes triggered by the Kunlun and Tokachi-oki earthquakes were recorded by multiple stations and could be located. These events occurred at shallow depth (< 5 km) above the background seismicity near the boundary between NW-striking Babaoshan and Huangzhuang-Gaoliying faults and the Fangshan Pluton. These results suggest that triggered earthquakes in this region likely occur near the transition between the velocity strengthening and weakening zones in the top few kms of the crust, and are likely driven by relatively large dynamic stresses on the order of few tens of KPa.

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Ferreira, Janito Vaqueiro. "Dynamic response analysis of structures with nonlinear components". Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299871.

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Kasinos, Stavros. "Seismic response analysis of linear and nonlinear secondary structures". Thesis, Loughborough University, 2018. https://dspace.lboro.ac.uk/2134/33728.

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Understanding the complex dynamics that underpin the response of structures in the occurrence of earthquakes is of paramount importance in ensuring community resilience. The operational continuity of structures is influenced by the performance of nonstructural components, also known as secondary structures. Inherent vulnerability characteristics, nonlinearities and uncertainties in their properties or in the excitation pose challenges that render their response determination as a non-straightforward task. This dissertation settles in the context of mathematical modelling and response quantification of seismically driven secondary systems. The case of bilinear hysteretic, rigid-plastic and free-standing rocking oscillators is first considered, as a representative class of secondary systems of distinct behaviour excited at a single point in the primary structure. The equations governing their full dynamic interaction with linear primary oscillators are derived with the purpose of assessing the appropriateness of simplified analysis methods where the secondary-primary feedback action is not accounted for. Analyses carried out in presence of pulse-type excitation have shown that the cascade approximation can be considered satisfactory for bilinear systems provided the secondary-primary mass ratio is adequately low and the system does not approach resonance. For the case of sliding and rocking systems, much lighter secondary systems need to be considered if the cascade analysis is to be adopted, with the validity of the approximation dictated by the selection of the input parameters. Based on the premise that decoupling is permitted, new analytical solutions are derived for the pulse driven nonlinear oscillators considered, conveniently expressing the seismic response as a function of the input parameters and the relative effects are quantified. An efficient numerical scheme for a general-type of excitation is also presented and is used in conjunction with an existing nonstationary stochastic far-field ground motion model to determine the seismic response spectra for the secondary oscillators at given site and earthquake characteristics. Prompted by the presence of uncertainty in the primary structure, and in line with the classical modal analysis, a novel approach for directly characterising uncertainty in the modal shapes, frequencies and damping ratios of the primary structure is proposed. A procedure is then presented for the identification of the model parameters and demonstrated with an application to linear steel frames with uncertain semi-rigid connections. It is shown that the proposed approach reduces the number of the uncertain input parameters and the size of the dynamic problem, and is thus particularly appealing for the stochastic assessment of existing structural systems, where partial modal information is available e.g. through operational modal analysis testing. Through a numerical example, the relative effect of stochasticity in a bi-directional seismic input is found to have a more prominent role on the nonlinear response of secondary oscillators when compared to the uncertainty in the primary structure. Further extending the analyses to the case of multi-attached linear secondary systems driven by deterministic seismic excitation, a convenient variant of the component-mode synthesis method is presented, whereby the primary-secondary dynamic interaction is accounted for through the modes of vibration of the two components. The problem of selecting the vibrational modes to be retained in analysis is then addressed for the case of secondary structures, which may possess numerous low frequency modes with negligible mass, and a modal correction method is adopted in view of the application for seismic analysis. The influence of various approaches to build the viscous damping matrix of the primary-secondary assembly is also investigated, and a novel technique based on modal damping superposition is proposed. Numerical applications are demonstrated through a piping secondary system multi-connected on a primary frame exhibiting various irregularities in plan and elevation, as well as a multi-connected flexible secondary system. Overall, this PhD thesis delivers new insights into the determination and understanding of the response of seismically driven secondary structures. The research is deemed to be of academic and professional engineering interest spanning several areas including seismic engineering, extreme events, structural health monitoring, risk mitigation and reliability analysis.

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Mahmoodi, Seyed Nima. "Nonlinear vibration and frequency response analysis of nanomechanical cantilever beams". Connect to this title online, 2007. http://etd.lib.clemson.edu/documents/1193080354/.

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Sweitzer, Karl Albert. "Random vibration response statistics for fatigue analysis of nonlinear structures". Thesis, University of Southampton, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.427343.

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Książki na temat "Nonlinear site response analysis"

Potter, Simon M. Nonlinear impulse response functions. [New York, N.Y.]: Federal Reserve Bank of New York, 1999.

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Canada. Dept. of Fisheries and Oceans. User's Guide to Nonlinear Response Surface Analysis Software: Part 2: Plotting Response Surface Contours. S.l: s.n, 1987.

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Ashland, Francis X. Site-response characterization for implementing Shakemap in northern Utah. [Salt Lake City, Utah]: Utah Geological Survey, 2001.

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F, Knight Norman, i United States. National Aeronautics and Space Administration., red. Nonlinear structural response using adaptive dynamic relaxation on a massively-parallel-processing system. [Washington, DC: National Aeronautics and Space Administration, 1994.

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Ng, Chung Fai. Design guide for predicting nonlinear random response (including snap-through) of buckled plates. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1989.

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R, Mathison Steven, i United States. National Aeronautics and Space Administration, red. Nonlinear analysis for the response and failure of compression-loaded angle-ply laminates with a hole. [Washington, DC: National Aeronautics and Space Administration, 1987.

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R, Srivastava, Mehmed O i NASA Glenn Research Center, red. Flutter and forced response analyses of cascades using a two-dimensional linearized Euler solver. Cleveland, Ohio: National Aeronautics and Space Administration, Glenn Research Center, 1999.

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Champlain, Andre F. De. An overview of nonlinear factor analysis and its relationship to item response theory / Andre ́F. De Champlain. Newtown, PA: Law School Admission Council, 1999.

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Petromichelakis, Ioannis. Path integral techniques and Gröbner basis approaches for stochastic response analysis and optimization of diverse nonlinear dynamic systems. [New York, N.Y.?]: [publisher not identified], 2020.

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Air Force Center for Environmental Excellence (U.S.). Analysis of SD-5 south plume response alternatives: A fact sheet providing information on potential cleanup alternatives for one of the plumes emanating from the MMR. Otis ANGB, MA: Air Force Center for Environmental Excellence, 1997.

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Części książek na temat "Nonlinear site response analysis"

Das, Rima, Rajib Saha i Rajat Debnath. "Assessment of Local Seismic Hazard of Agartala Based on Nonlinear Site Response Analysis". W Lecture Notes in Civil Engineering, 293–304. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-3383-6_27.

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Veena, U., Naveen James i T. G. Sitharam. "Ground Response Analysis of a Nuclear Power Plant Site in Southern India: A Nonlinear Approach". W Lecture Notes in Civil Engineering, 441–56. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6233-4_31.

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Ichimura, Tsuyoshi, Kohei Fujita i Muneo Hori. "Nonlinear Seismic Ground Response Analysis of Local Site Effects with Three-Dimensional High-Fidelity Model". W Encyclopedia of Earthquake Engineering, 1–8. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-36197-5_60-1.

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Ichimura, Tsuyoshi, Kohei Fujita i Muneo Hori. "Nonlinear Seismic Ground Response Analysis of Local Site Effects with Three-Dimensional High-Fidelity Model". W Encyclopedia of Earthquake Engineering, 1670–77. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-35344-4_60.

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Karaağaçlı, Taylan, i H. Nevzat Özgüven. "Experimental Modal Analysis of Geometrically Nonlinear Structures by Using Response-Controlled Stepped-Sine Testing". W Nonlinear Structures & Systems, Volume 1, 123–34. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-77135-5_15.

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Erdik, Mustafa. "Site Response Analysis". W Strong Ground Motion Seismology, 479–534. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-017-3095-2_17.

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Ritz, Christian, Signe Marie Jensen, Daniel Gerhard i Jens Carl Streibig. "Hierarchical nonlinear models". W Dose-Response Analysis Using R, 145–60. Boca Raton, Florida : CRC Press, [2019]: Chapman and Hall/CRC, 2019. http://dx.doi.org/10.1201/b21966-7.

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Ansal, Atilla, Gökçe Tönük i Aslı Kurtuluş. "Implications of Site Specific Response Analysis". W Recent Advances in Earthquake Engineering in Europe, 51–68. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-75741-4_2.

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Jia, Junbo. "Site-Response Analysis in Geotechnical Earthquake Engineering". W Soil Dynamics and Foundation Modeling, 109–65. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-40358-8_3.

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Ansal, Atilla, i Gökçe Tönük. "Site Characterization for Site Response Analysis in Performance Based Approach". W Proceedings of the 4th International Conference on Performance Based Design in Earthquake Geotechnical Engineering (Beijing 2022), 319–26. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-11898-2_16.

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Streszczenia konferencji na temat "Nonlinear site response analysis"

Guoxing, Chen, Jin Dandan, Gao Hongmei i Zhu Jiao. "NONLINEAR ANALYSIS ON SEISMIC RESPONSE OF A MULTI-GEOMORPHIC COMPOSITE SITE". W 5th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering Methods in Structural Dynamics and Earthquake Engineering. Athens: Institute of Structural Analysis and Antiseismic Research School of Civil Engineering National Technical University of Athens (NTUA) Greece, 2015. http://dx.doi.org/10.7712/120115.3573.526.

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Sett, Kallol, Kow Eshun, You Chen Chao i Boris Jeremić. "Effect of Uncertain Spatial Variability of Soils on Nonlinear Seismic Site Response Analysis". W GeoCongress 2012. Reston, VA: American Society of Civil Engineers, 2012. http://dx.doi.org/10.1061/9780784412121.292.

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Mirshekari, M., i M. Ghayoomi. "Simplified Equivalent Linear and Nonlinear Site Response Analysis of Partially Saturated Soil Layers". W IFCEE 2015. Reston, VA: American Society of Civil Engineers, 2015. http://dx.doi.org/10.1061/9780784479087.197.

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Bhuiyan, M., N. Ravichandran, R. Andrus i S. Aboye. "Comparison of Nonlinear One- and Two-Dimensional Site Response Analysis Tools for Charleston, SC". W Geo-Congress 2013. Reston, VA: American Society of Civil Engineers, 2013. http://dx.doi.org/10.1061/9780784412787.125.

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Mazzoni, Silvia, Kamalpreet Kalsi, Mark Sinclair i Mahmoud Hachem. "Implementation of Site-Specific Seismic Hazard Analysis and Ground Motion Selection and Modification for Use in Nonlinear Response History Analysis". W Structures Congress 2012. Reston, VA: American Society of Civil Engineers, 2012. http://dx.doi.org/10.1061/9780784412367.149.

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Phillips, Camilo, i Youssef M. A. Hashash. "A Simplified Constitutive Model to Simultaneously Match Modulus Reduction and Damping Soil Curves for Nonlinear Site Response Analysis". W Geotechnical Earthquake Engineering and Soil Dynamics Congress IV. Reston, VA: American Society of Civil Engineers, 2008. http://dx.doi.org/10.1061/40975(318)9.

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Na, Thomas (Kyunguk), Ashly Cabas i Brina M. Montoya. "Effect of MICP Treatment in Modulus Reduction and Damping Curves on Poorly Graded Sand and Nonlinear Site Response Analysis". W Geo-Congress 2023. Reston, VA: American Society of Civil Engineers, 2023. http://dx.doi.org/10.1061/9780784484654.024.

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Asgarian, Behrouz, Alireza Fiouz i Ali Shakeri Talarposhti. "Incremental Dynamic Analysis Considering Pile-Soil-Structure Interaction for the Jacket Type Offshore Platforms". W ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/omae2008-57273.

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Nonlinear response of piles is the most important source of potentially nonlinear behavior of offshore platforms due to earthquake excitations. It is often necessary to perform dynamic analysis of offshore platforms that accounts for soil nonlinearity, discontinuity condition at pile soil interfaces, energy dissipation through soil radiation damping and structural nonlinear behaviors of the piles. Incremental dynamic analysis is an analysis method that has recently emerged as a promising tool for thoroughly evaluating the seismic performance of structures. It involves subjecting a structural model to a suite of ground motion records, each scaled to several intensities and recording the responses at each level to form IDA curves of response versus intensity. In this paper, jacket and soil-pile system is modeled and the effects of Soil-Pile-Structure Interaction (SPSI) are considered, and the Incremental Dynamic Analysis (IDA) is used to investigate nonlinear behavior of offshore platforms. An attempt is made to introduce a practical BNWF (Beam on Nonlinear Winkler Foundation) model for estimating the lateral response of flexible piles embedded in layered soil deposits subjected to seismic loading. This model was incorporated into a Finite Element program (OpenSees). All the analyses are performed in two directions and the results are compared with each others. A computer program for Nonlinear Earthquake site Response Analyses of layered soil deposits (NERA) is used for analysis nonlinear response of soil layers. Limit state of the jacket is calculated from incremental dynamic analysis of the jacket using fiber elements for the nonlinear modeling of the system.

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Kimiaei, Mehrdad, Mohsen Ali Shayanfar, M. Hesham El Naggar i Ali Akbar Aghakouchak. "Non Linear Seismic Pile Soil Structure Interaction Analysis of Piles in Offshore Platforms". W ASME 2004 23rd International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2004. http://dx.doi.org/10.1115/omae2004-51006.

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Pile supported offshore platforms in seismically active areas should be designed to survive severe earthquake excitations with no global structural failure. It is often required to perform nonlinear seismic analysis of offshore platforms that accounts for soil nonlinearity, discontinuity condition at pile soil interfaces, energy dissipation through soil radiation damping and structural nonlinear behaviours of the piles. In this study a BNWF (Beam on Nonlinear Winkler Foundation) model is incorporated into a finite element program (ANSYS) and it is used to compute the lateral response of piles subjected to seismic loading. The soil stiffness is established using the P-Y curve. The results of equivalent linear earthquake free field ground motion analyses are used as the input excitations at support nodes of the model. The components and advantages of this practical ANSYS model in seismic pile soil structure interaction analyses are discussed and addressed in detail. Computed responses compared well with the experimental test results. Sensitivity of the results to model parameters and site response calculations are evaluated.

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Yang, Shao-Chong, i Qing-Sheng Yang. "Geometrically Nonlinear Transient Response of Laminated Plates With Nonlinear Viscoelastic Restraints". W ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/detc2016-59252.

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In this work, geometrically nonlinear transient response of laminated plates with nonlinear viscoelastic restraints is investigated by a numerical method, in the computational platform - MSC.Nastran. The variable constraining forces as functions of dynamic displacements and velocities are added to the right-hand side of equation of motion as additional applied loads. These loads are represented by an independent set of functions that satisfy the various constraint conditions for specific cases. The nonlinear equations are solved by using the load increments scheme in conjunction with Newton-Raphson iteration. The time history of transverse displacement at a typical point is given through a series of transient analysis. Then the comparisons of the responses for different parameters of the Kelvin-Voigt model and boundary conditions are made. The numerical results show that the present method is validated to be effective for treating geometrically nonlinear transient problems with nonlinear viscoelastic restraints.

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Raporty organizacyjne na temat "Nonlinear site response analysis"

Akai, Keigo, Junzo Tamari, Bong Soo Kim, Sang Heon Song i Jin Hong Kim. Nonlinear Frequency Response Analysis of Vehicle Ride Comfort Characteristics. Warrendale, PA: SAE International, maj 2005. http://dx.doi.org/10.4271/2005-08-0016.

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Stewart, Stephen E., i P. A. Cox. Nonlinear Dynamic Response Analysis of 115 mm Chemical Rocket Packing Impacts. Fort Belvoir, VA: Defense Technical Information Center, czerwiec 1985. http://dx.doi.org/10.21236/ada190702.

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Stuedlein, Armin, Ali Dadashiserej i Amalesh Jana. Models for the Cyclic Resistance of Silts and Evaluation of Cyclic Failure during Subduction Zone Earthquakes. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, kwiecień 2023. http://dx.doi.org/10.55461/zkvv5271.

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This report describes several advances in the cyclic failure assessment of silt soils with immediate and practical benefit to the geotechnical earthquake engineering profession. First, a database of cyclic loading test data is assembled, evaluated, and used to assess trends in the curvature of the CRR-N (cyclic resistance ratio - the number of equivalent cycles) relationship. This effort culminated in a plasticity index-dependent function which can be used to estimate the exponent b in the power law describing cyclic resistance, and may be used to estimate the cyclic resistance of silt soils as well as the number of equivalent loading cycles anticipated for subduction zone earthquakes. Statistical models for the cyclic resistance ratio and cyclic strength ratio are presented in this report. The SHANSEP (Stress History and Normalized Soil Engineering Properties)-inspired functional form of these models have been trained and tested against independent datasets and finalized using a combined dataset to provide reasonable estimates of resistance based on the available data. These models can be used to provide provisional estimates of the CRR-N and cyclic strength ratio power laws for cyclic shear strain failure criteria ranging from 1 to 10%, within certain stated limitations. The ground motion records within the NGA Subduction Project which have been released to the public to-date are implemented to examine the role of subduction zone earthquake characteristics on the number of equivalent loading cycles for a wide range of soils with exponents b ranging from 0.05 (moderate plasticity silt and clay) to 0.35 (dense sand). This analysis shows that the number of loading cycles for a given magnitude subduction zone earthquake is larger than those previously computed, whereas the corresponding magnitude scaling factors for use with the Simplified Method span a smaller range as a result of the ground motion characteristics. Owing to the large variability in the computed equivalent number of loading cycles, consideration of the uncertainty is emphasized in forward analyses. The work described herein may be used to estimate cyclic resistance of intact non-plastic and plastic silt soils and corresponding factor of safety against cyclic failure for a range in cyclic shear strain failure criteria, to plan cyclic laboratory testing programs, and to calibrate models for use in site response and nonlinear deformation analyses in the absence of site-specific cyclic test data. As with any empirical approach, the models presented herein should be revised when additional, high-quality cyclic testing data become available.

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Ahmed, S. B., R. J. Hunt i W. E. III Manrod. Y-12 site-specific earthquake response analysis and soil liquefaction assessment. Office of Scientific and Technical Information (OSTI), wrzesień 1995. http://dx.doi.org/10.2172/164919.

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Hutchings, L., i L. Furrey. Analysis of Site Response at U1A Hole at the Nevada Test Site From Weak Motion Readings. Office of Scientific and Technical Information (OSTI), maj 2002. http://dx.doi.org/10.2172/15002159.

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Sykora, D. W., i J. J. Davis. Site-specific earthquake response analysis for Paducah Gaseous Diffusion Plant, Paducah, Kentucky. Final report. Office of Scientific and Technical Information (OSTI), sierpień 1993. http://dx.doi.org/10.2172/10180225.

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Jordan, Preston D., Curtis M. Oldenburg i Grace W. Su. Analysis of Aquifer Response, Groundwater Flow, and PlumeEvolution at Site OU 1, Former Fort Ord, California. Office of Scientific and Technical Information (OSTI), luty 2005. http://dx.doi.org/10.2172/877324.

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Zareian, Farzin, i Joel Lanning. Development of Testing Protocol for Cripple Wall Components (PEER-CEA Project). Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, listopad 2020. http://dx.doi.org/10.55461/olpv6741.

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This report is one of a series of reports documenting the methods and findings of a multi-year, multi-disciplinary project coordinated by the Pacific Earthquake Engineering Research Center (PEER) and funded by the California Earthquake Authority (CEA). The overall project is titled “Quantifying the Performance of Retrofit of Cripple Walls and Sill Anchorage in Single-Family Wood-Frame Buildings,” henceforth referred to as the “PEER–CEA Project.” The overall objective of the PEER–CEA project is to provide scientifically-based information (e.g., testing, analysis, and resulting loss models) that measure and assess the effectiveness of seismic retrofit to reduce the risk of damage and associated losses (repair costs) of wood-frame houses with cripple wall and sill anchorage deficiencies as well as retrofitted conditions that address those deficiencies. Tasks that support and inform the loss-modeling effort are: (1) collecting and summarizing existing information and results of previous research on the performance of wood-frame houses; (2) identifying construction features to characterize alternative variants of wood-frame houses; (3) characterizing earthquake hazard and ground motions at representative sites in California; (4) developing cyclic loading protocols and conducting laboratory tests of cripple wall panels, wood-frame wall subassemblies, and sill anchorages to measure and document their response (strength and stiffness) under cyclic loading; and (5) the computer modeling, simulations, and the development of loss models as informed by a workshop with claims adjustors. This report is a product of Working Group 3.2 and focuses on Loading Protocol Development for Component Testing. It presents the background, development process, and recommendations for a quasi-static loading protocol to be used for cyclic testing of cripple wall components of wood-frame structures. The recommended loading protocol was developed for component testing to support the development of experimentally informed analytical models for cripple wall components. These analytical models are utilized for the performance-based assessment of wood-frame structures in the context of the PEER–CEA Project. The recommended loading protocol was developed using nonlinear dynamic analysis of representative multi-degree-of-freedom (MDOF) systems subjected to sets of single-component ground motions that varied in location and hazard level. Cumulative damage of the cripple wall components of the MDOF systems was investigated. The result is a testing protocol that captures the loading history that a cripple wall may experience in various seismic regions in California.

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Wu, Yingjie, Selim Gunay i Khalid Mosalam. Hybrid Simulations for the Seismic Evaluation of Resilient Highway Bridge Systems. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, listopad 2020. http://dx.doi.org/10.55461/ytgv8834.

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Bridges often serve as key links in local and national transportation networks. Bridge closures can result in severe costs, not only in the form of repair or replacement, but also in the form of economic losses related to medium- and long-term interruption of businesses and disruption to surrounding communities. In addition, continuous functionality of bridges is very important after any seismic event for emergency response and recovery purposes. Considering the importance of these structures, the associated structural design philosophy is shifting from collapse prevention to maintaining functionality in the aftermath of moderate to strong earthquakes, referred to as “resiliency” in earthquake engineering research. Moreover, the associated construction philosophy is being modernized with the utilization of accelerated bridge construction (ABC) techniques, which strive to reduce the impact of construction on traffic, society, economy and on-site safety. This report presents two bridge systems that target the aforementioned issues. A study that combined numerical and experimental research was undertaken to characterize the seismic performance of these bridge systems. The first part of the study focuses on the structural system-level response of highway bridges that incorporate a class of innovative connecting devices called the “V-connector,”, which can be used to connect two components in a structural system, e.g., the column and the bridge deck, or the column and its foundation. This device, designed by ACII, Inc., results in an isolation surface at the connection plane via a connector rod placed in a V-shaped tube that is embedded into the concrete. Energy dissipation is provided by friction between a special washer located around the V-shaped tube and a top plate. Because of the period elongation due to the isolation layer and the limited amount of force transferred by the relatively flexible connector rod, bridge columns are protected from experiencing damage, thus leading to improved seismic behavior. The V-connector system also facilitates the ABC by allowing on-site assembly of prefabricated structural parts including those of the V-connector. A single-column, two-span highway bridge located in Northern California was used for the proof-of-concept of the proposed V-connector protective system. The V-connector was designed to result in an elastic bridge response based on nonlinear dynamic analyses of the bridge model with the V-connector. Accordingly, a one-third scale V-connector was fabricated based on a set of selected design parameters. A quasi-static cyclic test was first conducted to characterize the force-displacement relationship of the V-connector, followed by a hybrid simulation (HS) test in the longitudinal direction of the bridge to verify the intended linear elastic response of the bridge system. In the HS test, all bridge components were analytically modeled except for the V-connector, which was simulated as the experimental substructure in a specially designed and constructed test setup. Linear elastic bridge response was confirmed according to the HS results. The response of the bridge with the V-connector was compared against that of the as-built bridge without the V-connector, which experienced significant column damage. These results justified the effectiveness of this innovative device. The second part of the study presents the HS test conducted on a one-third scale two-column bridge bent with self-centering columns (broadly defined as “resilient columns” in this study) to reduce (or ultimately eliminate) any residual drifts. The comparison of the HS test with a previously conducted shaking table test on an identical bridge bent is one of the highlights of this study. The concept of resiliency was incorporated in the design of the bridge bent columns characterized by a well-balanced combination of self-centering, rocking, and energy-dissipating mechanisms. This combination is expected to lead to minimum damage and low levels of residual drifts. The ABC is achieved by utilizing precast columns and end members (cap beam and foundation) through an innovative socket connection. In order to conduct the HS test, a new hybrid simulation system (HSS) was developed, utilizing commonly available software and hardware components in most structural laboratories including: a computational platform using Matlab/Simulink [MathWorks 2015], an interface hardware/software platform dSPACE [2017], and MTS controllers and data acquisition (DAQ) system for the utilized actuators and sensors. Proper operation of the HSS was verified using a trial run without the test specimen before the actual HS test. In the conducted HS test, the two-column bridge bent was simulated as the experimental substructure while modeling the horizontal and vertical inertia masses and corresponding mass proportional damping in the computer. The same ground motions from the shaking table test, consisting of one horizontal component and the vertical component, were applied as input excitations to the equations of motion in the HS. Good matching was obtained between the shaking table and the HS test results, demonstrating the appropriateness of the defined governing equations of motion and the employed damping model, in addition to the reliability of the developed HSS with minimum simulation errors. The small residual drifts and the minimum level of structural damage at large peak drift levels demonstrated the superior seismic response of the innovative design of the bridge bent with self-centering columns. The reliability of the developed HS approach motivated performing a follow-up HS study focusing on the transverse direction of the bridge, where the entire two-span bridge deck and its abutments represented the computational substructure, while the two-column bridge bent was the physical substructure. This investigation was effective in shedding light on the system-level performance of the entire bridge system that incorporated innovative bridge bent design beyond what can be achieved via shaking table tests, which are usually limited by large-scale bridge system testing capacities.

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North, Karen. Safety, Health and Emergency Response Plan, Phase 1 Site Investigation and Analysis. Basin F Ground Water Treatment Interim Response Action, Rocky Mountain Arsenal, Commerce City, Colorado. Fort Belvoir, VA: Defense Technical Information Center, czerwiec 1988. http://dx.doi.org/10.21236/ada296916.

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