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Literatura académica sobre el tema "Nonlinear static (pushover) analysis"

Autor: Grafiati

Publicado: 10 de marzo de 2023

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Artículos de revistas sobre el tema "Nonlinear static (pushover) analysis"

1

Somwanshi, Mrs Ramatai. "Estimation of Nonlinear Static Damage Index for Seismic Assessment". International Journal for Research in Applied Science and Engineering Technology 9, n.º VII (31 de julio de 2021): 3688–95. http://dx.doi.org/10.22214/ijraset.2021.37069.

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The main objective of this study is, evaluation damage index of reinforced concrete moment resisting frames by” NONLINEAR STATIC PROCEDURE” nonlinear static analysis includes the capacity spectrum method (CSM) that uses the intersection of the capacity (pushover) curve and a reduced response spectrum to estimate maximum displacement in terms of damage of building. Nonlinear static procedure is simple and practical method for static damage index. For this purpose, first some functions are derived to estimate damage to the structure using pushover analysis and then designed procedure is proposed. In this study damage function is estimated by using correlation between park-ang damage index (NLDD) and nonlinear static damage index (NLSD) which is based on the pushover analysis. For this purpose dynamic and static damage damage analysis are performed on several concrete frames subjected to various earthquake acceleration records. So the detail explanation is found in this study.

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Sheth, Rutvik, Jayesh Prajapati y Devesh Soni. "Comparative study nonlinear static pushover analysis and displacement based adaptive pushover analysis method". International Journal of Structural Engineering 9, n.º 1 (2018): 81. http://dx.doi.org/10.1504/ijstructe.2018.090753.

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Soni, Devesh, Jayesh Prajapati y Rutvik Sheth. "Comparative study of nonlinear static pushover analysis and displacement based adaptive pushover analysis method". International Journal of Structural Engineering 9, n.º 1 (2018): 1. http://dx.doi.org/10.1504/ijstructe.2018.10009092.

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4

Zheng, Zhi, Changhai Zhai, Xu Bao y Xiaolan Pan. "Seismic capacity estimation of a reinforced concrete containment building considering bidirectional cyclic effect". Advances in Structural Engineering 22, n.º 5 (25 de octubre de 2018): 1106–20. http://dx.doi.org/10.1177/1369433218806034.

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This study serves to estimate the seismic capacity of the reinforced concrete containment building considering its bidirectional cyclic effect and variations of energy. The implementation of the capacity estimation has been performed by extending two well-known methods: nonlinear static pushover and incremental dynamic analysis. The displacement and dissipated energy demands are obtained from the static pushover analysis considering bidirectional cyclic effect. In total, 18 bidirectional earthquake intensity parameters are developed to perform the incremental dynamic analysis for the reinforced concrete containment building. Results show that the bidirectional static pushover analysis tends to decrease the capacity of the reinforced concrete containment building in comparison with unidirectional static pushover analysis. The 5% damped first-mode geometric mean spectral acceleration strongly correlates with the maximum top displacement of the containment building. The comparison of the incremental dynamic analysis and static pushover curves is employed to determine the seismic capacity of the reinforced concrete containment building. It is concluded that bidirectional static pushover and incremental dynamic analysis studies can be used in performance evaluation and capacity estimation of reinforced concrete containment buildings under bidirectional earthquake excitations.

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5

Abass, Haider Ali y Husain Khalaf Jarallah. "Seismic Evaluation and Retrofitting of an Existing Buildings-State of the Art". Al-Nahrain Journal for Engineering Sciences 24, n.º 1 (7 de julio de 2021): 52–75. http://dx.doi.org/10.29194/njes.24010052.

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In this study, previous researches were reviewed in relation to the seismic evaluation and retrofitting of an existing building. In recent years, a considerable number of researches has been undertaken to determine the performance of buildings during the seismic events. Performance based seismic design is a modern approach to earthquake resistant design of reinforcement concrete buildings. Performance based design of building structures requires rigorous non-linear static analysis. In general, nonlinear static analysis or pushover analysis was conducted as an efficient instrument for performance-based design. Pushover analysis came into practice after 1970 year. During the seismic event, a nonlinear static analysis or pushover analysis is used to analyze building under gravity loads and monotonically increasing lateral forces. These building were evaluated until a target displacement reached. Pushover analysis provides a better understanding of buildings seismic performance, also it traces the progression of damage and failure of structural components of buildings.

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6

Pinho, Rui, Mário Marques, Ricardo Monteiro, Chiara Casarotti y Raimundo Delgado. "Evaluation of Nonlinear Static Procedures in the Assessment of Building Frames". Earthquake Spectra 29, n.º 4 (noviembre de 2013): 1459–76. http://dx.doi.org/10.1193/100910eqs169m.

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In recent years a number of nonlinear static procedures (NSPs) have been developed and proposed. Such pushover-based seismic assessment procedures are relatively straightforward to employ and are generally chosen over nonlinear dynamic analysis, especially within the realm of design office application. Parametric comparisons between the different NSPs available, however, are still somewhat sparse. In this work, five commonly employed NSPs (the N2 method, capacity spectrum method, modal pushover analysis, adaptive modal combination procedure, and the adaptive capacity spectrum method) are applied in the assessment of 16 frames subjected to a large number of input motions with a view to assess the accuracy level of such approaches through comparison with nonlinear dynamic analysis results. The evaluation shows that all the NSPs are able to accurately predict displacements and to produce reasonable estimates for other response parameters, with limited dispersion. Even though no single NSP tested led to consistently superior results, modal pushover analysis and the adaptive capacity spectrum method seemed to perform slightly better.

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7

Krolo, Paulina y Davor Grandić. "Hysteresis Envelope Model of Double Extended End-Plate Bolted Beam-to-Column Joint". Buildings 11, n.º 11 (3 de noviembre de 2021): 517. http://dx.doi.org/10.3390/buildings11110517.

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In this study, a hysteresis envelope mathematical model for the double extended end-plate bolted beam-to-column joint is proposed. The aim of a proposed joint model is to provide a more realistic behaviour of steel frames under seismic loading by using nonlinear static pushover analysis. The hysteresis envelope model defines the ratios between the monotonic properties of the joints and the properties of the joints during cyclic deformation. The proposed models are based on the hysteresis curves of the joints obtained by numerical simulations. The numerical model takes into account the geometric nonlinearity of the connecting elements, preloading of bolts, contacts between plates and bolts, and nonlinear properties of steel. Nonlinear static pushover analyses of steel frames are performed where the behaviour of the joints is described using the proposed hysteresis envelope models. The results are compared with the nonlinear static pushover analyses of steel frames with a trilinear monotonic joint model. Based on the results, the values of maximum peak ground acceleration for moment-resisting frames with the monotonic model of joints and hysteresis envelope model are estimated.

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8

YADAV, AASTHA y DEEPTI HAZARI. "STATIC PUSHOVER ANALYSIS FOR REGULAR AND IRREGULAR STRUCTURES IN ALL ZONES". YMER Digital 21, n.º 05 (31 de mayo de 2022): 1515–23. http://dx.doi.org/10.37896/ymer21.05/g5.

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In many earthquake-prone countries, structures may be suffers to various seismic loads in any stage of structures life. For this situation it is expected that the structures designed will show ductile behaviour under the various loads like vertical loads and lateral loads and also shows a stable behaviour without any major damage. Most of Indian lands behave insecure owing to the vibrations which are caused by the seismic effects. Also, it’s not possible to stop earthquake or vibrations on the structures but it may be controlled by some effective seismic techniques. Pushover analysis is a simply nonlinear analysis to estimate the static and dynamic demand imposed on any structures under earthquake excitation. In now days for design purpose, irregularity in structures is under highly demand. In this paper regular and irregular building structures are taken to study the behaviour during under seismic zone. Here various type highrise buildings are analyzed; behaviour of high rise building during earthquake depends on their structural design. In this study a G+8 rugular structure and multi-storeyed irregular structures are analyzed by nonlinear static pushover analysis. Zone factor for analysis is taken as zone III & zone V. This concerned work all building are designed as per IS 456:2000 and IS1893:2002. The aim of this work is to compare the result of symmetrical and unsymmetrical structure behaviour after applying pushover analysis in behalf of storey drift, storey displacement, base shear and storey shear. Keywords- Pushover analysis, seismic loads, lateral loads, regular and irregular building, nonlinear analysis, storey drift, storey displacement, base shear.

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9

Fragiadakis, Michalis, Dimitrios Vamvatsikos y Mark Aschheim. "Application of Nonlinear Static Procedures for the Seismic Assessment of Regular RC Moment Frame Buildings". Earthquake Spectra 30, n.º 2 (mayo de 2014): 767–94. http://dx.doi.org/10.1193/111511eqs281m.

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The applicability of nonlinear static procedures for estimating the seismic demands of typical regular RC moment-resisting frames is evaluated. This work, conducted within the framework of the ATC-76-6 project, shows the degree to which nonlinear static methods can characterize global and local response demands vis-à–vis those determined by nonlinear dynamic analysis for three RC moment-frame buildings. The response quantities (engineering demand parameters) considered are peak story displacements, story drifts, story shears, and floor overturning moments. The single-mode pushover methods evaluated include the N2 and the ASCE-41 coefficient methods. Multi-modal pushover methods, such as modal pushover analysis and the consecutive modal pushover method, were also evaluated. The results indicate that the relatively good performance of the single-mode methods observed for low-rise buildings rapidly deteriorates as the number of stories increases. The multi-modal techniques generally extend the range of applicability of pushover methods, but at the cost of additional computation and without ensuring the reliability of the results.

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10

Yu, Miao, Zhi Hong Dai y Gui Juan Hu. "Improvements on Structural Static Pushover Analysis Method in High-Rise Building Structure". Advanced Materials Research 989-994 (julio de 2014): 3075–78. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.3075.

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In this paper, a new analysis model to assess the structure seismic capability is established, using improved capacity spectrum method. The model can solve the problem of many unknown and big computation workload in the process of conventional Pushover analysis. Conventional Pushover is very complex when use in the analysis of structure dynamic problem and nonlinear problem, the new model can solve these problem.

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Tesis sobre el tema "Nonlinear static (pushover) analysis"

1

Sapkota, Suman. "Seismic Capacity Evaluation of Reinforced Concrete Buildings Using Pushover Analysis". University of Toledo / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1544707728674621.

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Leung, Colin. "SENSITIVITY OF SEISMIC RESPONSE OF A 12 STORY REINFORCED CONCRETE BUILDING TO VARYING MATERIAL PROPERTIES". DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/681.

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The main objective of this investigation is to examine how various material properties, governed by code specification, affect the seismic response of a twelve- story reinforced concrete building. This study incorporates the pushover and response history analysis to examine how varying steel yield strength (Fy), 28 day nominal compressive concrete strength (f’c), modes, and ground motions may affect the base shear capacity and displacements of a reinforced concrete structure. Different steel and concrete strengths were found to have minimal impact on the initial stiffness of the structure. However, during the post-yielding phase, higher steel and concrete compressive strengths resulted in larger base shear capacities of up to 22%. The base shear capacity geometric median increased as f’c or Fy increased, and the base shear capacity dispersion measure decreased as f’c or Fy increased. Higher mode results were neglected in this study due to non-convergent pushover analyses results. According to the response history analysis, larger yield and concrete compressive strengths result in lower roof displacement. The difference in roof displacement was less than 12% throughout. This displays the robustness of both analysis methods because material properties have insignificant impact on seismic response. Therefore, acceptable yield and compressive strengths governed by seismic code will result in acceptable building performance.

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3

Alamri, Amro Abdullah. "DEVELOPING A FULL THREE-DIMENSIONAL MODEL OF SELF-CENTERING CONCENTRICALLY BRACED FRAME SYSTEMS USING NONLINEAR STATIC PUSHOVER ANALYSIS". University of Akron / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=akron1627680240922479.

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4

Fernández, López Rodrigo Miguel y Velásquez Ricardo Timoteo Zapata. "Análisis y diseño estructural de una torre de 40 pisos y 4 sótanos siguiendo normas peruanas incluyendo su desempeño sísmico en el distrito de Santiago de Surco, Lima". Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/652425.

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En la presente investigación se realizará el análisis y diseño estructural de una torre de 40 pisos y 4 sótanos de concreto armado siguiendo normas peruanas y el cálculo de desempeño sísmico en el distrito de Santiago de Surco, Lima. Para esto, la hipótesis plantea sí las normas peruanas cumplen con el desempeño sismorresistente deseado para una torre alta como esta. Para un entendimiento progresivo, primero se hará una descripción de la torre alta a estudiar, su arquitectura, estructura, suelo y otros. En la segunda parte se darán los conceptos necesarios para comprender los tipos de análisis lineal estático, lineal dinámico y no lineal estático. Se definirán los materiales, los diagramas momento – rotación también se explicará la obtención de la curva de capacidad del edificio. Se tocarán conceptos de viento y nivel de desempeño. En la tercera parte, se procederá con en análisis sísmico cumpliendo las exigencias de sismorresistencia, también se hará el análisis por viento para comparar ambos efectos. En el capítulo cuarto se procederá a hacer el diseño estructural usando las normas de concreto armado. En el capítulo cinco se hará el análisis por desempeño usando el método pushover para finalmente conseguir los resultados de este proyecto y a las conclusiones de este desarrollo.
In the present investigation, the analysis and structural design of a 40-storey tower and 4 reinforced concrete basements will be carried out following Peruvian regulations and the calculation of seismic performance in the Santiago de Surco district, Lima. For this, the hypothesis states whether the Peruvian standards meet the desired seismic resistance performance for a tall tower like this one. For a progressive understanding, first a description will be made of the tall tower to study, its architecture, structure, soil and others. In the second part, the concepts necessary to understand the types of static linear analysis, dynamic linear analysis and static non-linear analysis will be given. The materials will be defined, the moment - rotation diagrams will also explain the obtaining of the building capacity curve. Wind and performance level concepts will be discussed. In the third part, we will proceed with seismic analysis complying with the seismic resistance requirements, we will also do the wind analysis to compare both effects. In the fourth chapter, the structural design will be carried out using the reinforced concrete standards. In chapter five the performance analysis will be done using the pushover method to finally get the results of this project and the conclusions of this development.
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5

Estrella, Chavez Juan Jacob y Zamalloa Ángel Jair Ochoa. "Determinación de la vulnerabilidad sísmica del Mercado Municipal del Balneario de Pucusana mediante el análisis estático no lineal “pushover”". Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2021. http://hdl.handle.net/10757/657564.

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Debido al alto peligro de ocurrencia de sismo, al que está expuesto el balneario de Pucusana y el crecimiento poblacional que ha tenido en los últimos años, hace necesario conocer los efectos que producirían un sismo de gran magnitud en esta localidad, según (Silgado, 1978), en el año 1746 ocurrió un sismo de magnitud estimada de 9.0 MW, seguido de un maremoto que destruyó el puerto del callao y según (Tavera, 2008), el área de estudio ocupa una zona de peligro estimado, se espera un sismo de magnitud 8.8 MW, producto de estos estudios se consideró escoger esta localidad como representativa para elaborar un escenario de riesgo sísmico. Ante esta realidad, se hace necesario elaborar escenarios de Riesgo para el balneario de Pucusana. Este trabajo de investigación pretende realizar una mejora a la propuesta realizada por el CENEPRED, en su manual de estimación del riesgo, utilizando el Análisis “PUSHOVER”, mediante la metodología ATC-40, el ASCE41-13 y SEAOC VISION 2000, que permitirá determinar la calidad de la estructura a detalle y compararla con el nivel de peligro de sismo que se tiene producto de los trabajos del proyecto SIRAD 2012. Se ha escogido para realizar este estudio el Mercado Municipal, debido a que es una de las estructuras más importantes del Balneario. Finalmente, el aporte de esta tesis es determinar el nivel de desempeño del mercado municipal de Pucusana, para la determinación del nivel de vulnerabilidad del mismo.
Due to the high danger of earthquake occurrence, to which the Pucusana city is exposed and the population growth that it has had in recent years, it is necessary to know the effects that a large earthquake would produce in this locality, according to (Silgado, 1978 ), in the year 1746 an earthquake of estimated magnitude of 9.0 MW occurred, followed by a tsunami that destroyed the port of Callao and according to (Tavera, 2008), the study area occupies an estimated danger zone, an earthquake of magnitude 8.8 MW, as a result of these studies, it is considered to choose this locality as representative to elaborate a seismic risk scenario. Given this reality, it is necessary to develop Risk scenarios for the Pucusana spa. This research work aims to make an improvement to the proposal made by CENEPRED, in its risk estimation manual, using the “PUSHOVER” Analysis, using the ATC-40 methodology, ASCE41-13 and SEAOC VISION 2000, which will determine the quality of the structure in detail and compare it with the level of earthquake danger that exists as a result of the work of the SIRAD 2012 project. The Municipal Market has been chosen to carry out this study, because it is one of the most important structures in the Spa. Finally, the contribution of this thesis is to determine the level of performance of the municipal market of Pucusana, to determine its level of vulnerability.
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6

Oguz, Sermin. "Evaluation Of Pushover Analysis Procedures For Frame Structures". Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606047/index.pdf.

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Pushover analysis involves certain approximations and simplifications that some amount of variation is always expected to exist in seismic demand prediction of pushover analysis. In literature, some improved pushover procedures have been proposed to overcome the certain limitations of traditional pushover procedures. The effects and the accuracy of invariant lateral load patterns utilised in pushover analysis to predict the behavior imposed on the structure due to randomly selected individual ground motions causing elastic and various levels of nonlinear response were evaluated in this study. For this purpose, pushover analyses using various invariant lateral load patterns and Modal Pushover Analysis were performed on reinforced concrete and steel moment resisting frames covering a broad range of fundamental periods. Certain response parameters predicted by each pushover procedure were compared with the '
exact'
results obtained from nonlinear dynamic analysis. The primary observations from the study showed that the accuracy of the pushover results depends strongly on the load path, properties of the structure and the characteristics of the ground motion. Pushover analyses were performed by both DRAIN-2DX and SAP2000. Similar pushover results were obtained from the two different softwares employed in the study provided that similar approach is used in modeling the nonlinear properties of members as well as their structural features. The accuracy of approximate procedures utilised to estimate target displacement was also studied on frame structures. The accuracy of the predictions was observed to depend on the approximations involved in the theory of the procedures, structural properties and ground motion characteristics.

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Obst, Andreas W. "Nonlinear static and transient analysis of generally laminated beams". Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-10102009-020113/.

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Shafiei-Tehrany, Reza. "Nonlinear dynamic and static analysis of I-5 Ravenna Bridge". Pullman, Wash. : Washington State University, 2008. http://www.dissertations.wsu.edu/Thesis/Fall2008/R_Shafiei-Tehrany_112608.pdf.

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Thesis (M.S. in civil engineering)--Washington State University, December 2008.
Title from PDF title page (viewed on Apr. 10, 2009). "Department of Civil and Environmental Engineering." Includes bibliographical references (p. 127-133).

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9

Sotoudeh, Zahra. "Nonlinear static and dynamic analysis of beam structures using fully intrinsic equations". Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41179.

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Beams are structural members with one dimension much larger than the other two. Examples of beams include propeller blades, helicopter rotor blades, and high aspect-ratio aircraft wings in aerospace engineering; shafts and wind turbine blades in mechanical engineering; towers, highways and bridges in civil engineering; and DNA modeling in biomedical engineering. Beam analysis includes two sets of equations: a generally linear two-dimensional problem over the cross-sectional plane and a nonlinear, global one-dimensional analysis. This research work deals with a relatively new set of equations for one-dimensional beam analysis, namely the so-called fully intrinsic equations. Fully intrinsic equations comprise a set of geometrically exact, nonlinear, first-order partial differential equations that is suitable for analyzing initially curved and twisted anisotropic beams. A fully intrinsic formulation is devoid of displacement and rotation variables, making it especially attractive because of the absence of singularities, infinite-degree nonlinearities, and other undesirable features associated with finite rotation variables. In spite of the advantages of these equations, using them with certain boundary conditions presents significant challenges. This research work will take a broad look at these challenges of modeling various boundary conditions when using the fully intrinsic equations. Hopefully it will clear the path for wider and easier use of the fully intrinsic equations in future research. This work also includes application of fully intrinsic equations in structural analysis of joined-wing aircraft, different rotor blade configuration and LCO analysis of HALE aircraft.

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Sakamoto, Takashi. "Nonlinear static and dynamic analysis of flexible risers subjected to vortex excitation". Thesis, Imperial College London, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309379.

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Libros sobre el tema "Nonlinear static (pushover) analysis"

1

Council, Applied Technology. Improvement of nonlinear static seismic analysis procedures. Washington, D.C: Applied Technology Council, 2005.

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2

Y, Cheng Franklin, ed. Seismic design aids for nonlinear pushover analysis of reinforced concrete and steel bridges. Boca Raton, FL: CRC Press, 2012.

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3

D, Bibel G., United States. National Aeronautics and Space Administration. y U.S. Army Research Laboratory., eds. Contact stress analysis of spiral bevel gears using nonlinear finite element static analysis. [Washington, DC: National Aeronautics and Space Administration, 1993.

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4

Reanalysis of structures: A unified approach for linear, nonlinear, static, and dynamic systems. Dordrecht, The Netherlands: Springer, 2008.

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G, Wilson David y SpringerLink (Online service), eds. Nonlinear Power Flow Control Design: Utilizing Exergy, Entropy, Static and Dynamic Stability, and Lyapunov Analysis. London: Springer-Verlag London Limited, 2011.

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Sharma, Akanshu. Experimental investigations and evaluation of strength and deflections of reinforced concrete beam-column joints using nonlinear static analysis. Mumbai: Bhabha Atomic Research Centre, 2009.

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Hayden, Griffin O., Johnson Eric R y United States. National Aeronautics and Space Administration., eds. Static and dynamic large deflection flexural response of graphite-epoxy beams. Blacksburg, Va: Virginia Tech Center for Composite Materials and Structures, Virginia Polytechnic Institute and State University, 1987.

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Hayden, Griffin O., Johnson Eric R y United States. National Aeronautics and Space Administration. Scientific and Technical Information Division., eds. Static and dynamic large deflection flexural response of graphite-epoxy beams. [Washington, DC]: National Aeronautics and Space Administration, Scientific and Technical Information Division, 1988.

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9

Cheng, Franklin Y. y Jeffrey Ger. Seismic Design Aids for Nonlinear Pushover Analysis of Reinforced Concrete and Steel Bridges. Taylor & Francis Group, 2017.

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Cheng, Franklin Y. y Jeffrey Ger. Seismic Design Aids for Nonlinear Pushover Analysis of Reinforced Concrete and Steel Bridges. Taylor & Francis Group, 2016.

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Capítulos de libros sobre el tema "Nonlinear static (pushover) analysis"

1

Aschheim, Mark, Enrique Hernández y Dimitrios Vamvatsikos. "Equivalent SDOF systems and nonlinear static (pushover) analysis". En Design of Reinforced Concrete Buildings for Seismic Performance, 143–64. Boca Raton : Taylor & Francis, a CRC title, part of the Taylor & Francis imprint, a member of the Taylor & Francis Group, the academic division of T& F Informa, plc, [2019] |: CRC Press, 2019. http://dx.doi.org/10.1201/b19964-7.

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Doyle, James F. "Nonlinear Static Analysis". En Mechanical Engineering Series, 169–240. New York, NY: Springer New York, 2001. http://dx.doi.org/10.1007/978-1-4757-3546-8_4.

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Kojima, Kensuke, Minoru Kinoshita y Kohei Suenaga. "Generalized Homogeneous Polynomials for Efficient Template-Based Nonlinear Invariant Synthesis". En Static Analysis, 278–99. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-53413-7_14.

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Hejazi, Farzad y Keyhan Karimzadeh. "Dynamic and Nonlinear Static Analysis". En Analysis Procedure for Earthquake Resistant Structures, 449–536. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8839-1_4.

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Izycheva, Anastasiia, Eva Darulova y Helmut Seidl. "Counterexample- and Simulation-Guided Floating-Point Loop Invariant Synthesis". En Static Analysis, 156–77. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-65474-0_8.

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AbstractWe present an automated procedure for synthesizing sound inductive invariants for floating-point numerical loops. Our procedure generates invariants of the form of a convex polynomial inequality that tightly bounds the values of loop variables. Such invariants are a prerequisite for reasoning about the safety and roundoff errors of floating-point programs. Unlike previous approaches that rely on policy iteration, linear algebra or semi-definite programming, we propose a heuristic procedure based on simulation and counterexample-guided refinement. We observe that this combination is remarkably effective and general and can handle both linear and nonlinear loop bodies, nondeterministic values as well as conditional statements. Our evaluation shows that our approach can efficiently synthesize loop invariants for existing benchmarks from literature, but that it is also able to find invariants for nonlinear loops that today’s tools cannot handle.

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Ghorashi, Mehrdaad. "Nonlinear Static Analysis of Composite Beams". En Statics and Rotational Dynamics of Composite Beams, 67–93. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-14959-2_4.

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Tortorelli, Daniel A. "Sensitivity Analysis: Nonlinear Static Spring Systems". En Advanced Design of Mechanical Systems: From Analysis to Optimization, 195–217. Vienna: Springer Vienna, 2009. http://dx.doi.org/10.1007/978-3-211-99461-0_9.

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De Luca, Flavia, Dimitrios Vamvatsikos y Iunio Iervolino. "Improving Static Pushover Analysis by Optimal Bilinear Fitting of Capacity Curves". En Computational Methods in Applied Sciences, 273–95. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6573-3_14.

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Skočajić, Aljoša y Naida Ademović. "Nonlinear Static Analysis of a Railway Bridge". En Advanced Technologies, Systems, and Applications V, 171–84. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-54765-3_11.

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Wall, Mitchell, Matthew S. Allen y Iman Zare. "Predicting S4 Beam Joint Nonlinearity Using Quasi-Static Modal Analysis". En Nonlinear Structures and Systems, Volume 1, 39–51. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-12391-8_5.

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Actas de conferencias sobre el tema "Nonlinear static (pushover) analysis"

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Briseghella, Bruno, Valeria Colasanti, Luigi Fenu, Camillo Nuti, Enrico Spacone y Humberto Varum. "Nonlinear Static Analysis by Finite Elements of a Fujian Hakka Tulou". En IABSE Symposium, Guimarães 2019: Towards a Resilient Built Environment Risk and Asset Management. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/guimaraes.2019.1140.

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<p>Hakka Tulous are massive circular earth constructions of the Fujian Province, China, included in the UNESCO World Heritage list. They are subjected to earthquakes of medium magnitude, but their response to the seismic action is not yet investigated in depth. The seismic response of Fujian Tulous was herein investigated through pushover analysis modelling the Tulou structure by finite elements. Although the Tulou is a big construction with a circular earth wall of about fifty meters in diameter, a micromechanical approach was used to model the earth nonlinear behaviour. Even if no binder is added to the earthen material, the Concrete Damaged Plasticity model can be adopted and has shown to be effective in modelling its nonlinear behaviour, as well as the nonlinear response of the Tulou earth wall. Performing pushover analysis of a big earth structure using a micromechanical approach seems to give reliable results, that must be proved by future research.</p>

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Asgarian, B. y A. Raziei. "Comparison of Incremental Dynamic and Pushover Analysis of Jacket Type Offshore Platforms". En ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2007. http://dx.doi.org/10.1115/omae2007-29469.

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Jacket Type Offshore Platforms show nonlinear behaviors under strong ground motions result from nonlinear behaviors of soil, pile and jacket members. Nonlinear behavior study isn’t carried out accurately unless an accurate and suitable analytical method is selected. The main focus of this paper is the soil-pile-structure interaction analysis of the jacket type offshore platforms subjected to strong ground motion. A nonlinear dynamic analysis shows a true response if a logical model and an accurate theory are selected. In addition to nonlinear dynamic analysis, nonlinear static analysis is also carried out in this paper and results of the static nonlinear and dynamic nonlinear analyses have been compared. It was concluded that nonlinear static analysis can be used under some conditions instead of nonlinear dynamic analysis.

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Perdomo, Camilo, Ricardo Monteiro y Halûk Sucuoğlu. "Development of Fragility Curves for Multi-Span RC Bridges using Generalized Pushover Analysis". En IABSE Symposium, Guimarães 2019: Towards a Resilient Built Environment Risk and Asset Management. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/guimaraes.2019.0548.

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<p>Over the past few decades, fragility curves became a powerful tool for the seismic vulnerability assessment of structures. There are several available analytical procedures for calculating fragility curves, using both static and dynamic nonlinear analyses. In this study, a nonlinear static method, based on Generalized Pushover Analysis (GPA), is implemented for the development of analytical fragility curves of reinforced concrete (RC) bridges. The relative accuracy of the GPA algorithm, when applied to a large number of existing bridges, is evaluated through the comparison with the results from Nonlinear Time History Analysis (NTHA). Results indicate that GPA provides a good estimation of the fragility curves with respect to NTHA. The added computational demand of the GPA algorithm in terms of the number of analyses pays off in terms of accuracy while keeping the simplicity of a non-adaptive conventional pushover algorithm, which is desirable in engineering practice.</p>

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Kulkarni, Saurabh, S. S. Kadam y P. B. Zambare. "Analytical Investigation of Response Reduction Factor (R) for R.C. Elevated Water Tank with Non-linear Static (Pushover) Analysis". En National Conference on Relevance of Engineering and Science for Environment and Society. AIJR Publisher, 2021. http://dx.doi.org/10.21467/proceedings.118.61.

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In the present work, an attempt is made to investigate response reduction factor (R) values of different soil types by using nonlinear static (Pushover) analysis for R.C. elevated rectangular water tank structure. All the parameters were investigated by varying properties of soft, medium and hard soils to cover a method of nonlinear static (Pushover) analysis. The zone factor (Z) kept constant Z – III for pandharpur site location and capacity of 150 m3 tank full in condition. This has resulted into SAP 2000 finite element software. The analysis of response reduction factor (R) value was done under three different soil conditions i.e. soft soil properties, medium soil properties, and hard soil properties. Response reduction factor (R) values indicate that R.C. elevated rectangular water tank structure without soil properties behaves quite the one value as per codal provisions.

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Zhang, Q. W., Kusnowidjaja Megawati, L. P. Huang y T. C. Pan. "Evaluating the Efficiency of Current Nonlinear Static Pushover Procedures on Estimating Torsion Effect for Asymmetric High-Rise Buildings". En First International Symposium on Uncertainty Modeling and Analysis and Management (ICVRAM 2011); and Fifth International Symposium on Uncertainty Modeling and Anaylsis (ISUMA). Reston, VA: American Society of Civil Engineers, 2011. http://dx.doi.org/10.1061/41170(400)107.

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Phan, Hoang Nam, Fabrizio Paolacci, Silvia Alessandri y Phuong Hoa Hoang. "Enhanced Seismic Fragility Analysis of Unanchored Above-Ground Steel Liquid Storage Tanks". En ASME 2018 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/pvp2018-84367.

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Earthquake damage in recent decades has revealed that storage tanks are one of the most vulnerable components in petrochemical and oil processing plants. Damage to tanks commonly associated with losses of containment, and thus results in the overall damage to nearby areas. Many of existing steel storage tanks were designed with outdated analysis methods and with underestimated seismic loads; therefore, various types of failure may occur during a strong ground shaking. This paper aims to present an appropriate methodology for the component fragility evaluation of existing storage tanks in a process plant, which will support for the determination of the loss of containment in terms of the ground motion intensity measure and finally the quantitative risk analysis of the plant and its nearby areas. In this respect, an unanchored oil storage tank, which is ideally located in Sicily (Italy), is selected as a case study. The significance of modeling parameters of the tank is first investigated with a screening study, which is based on nonlinear static pushover analyses of the tank using the ABAQUS software. The study aims to enhance the understanding of which modeling parameters significantly affect the seismic response of the tank and to reduce the number of analyses in the fragility evaluation. The fragility curves are then developed based on a lumped-mass model that is calibrated from the static pushover analysis results. Sources of uncertainty, related to significant parameters previously identified, are considered in the fragility analysis using a sampling procedure to generate statistically significant samples of the model.

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Beconcini, Maria Luisa, Paolo Cioni, Pietro Croce, Paolo Formichi, Filippo Landi y Caterina Mochi. "Influence of shear modulus and drift capacity on non-linear static analysis of masonry buildings". En IABSE Symposium, Guimarães 2019: Towards a Resilient Built Environment Risk and Asset Management. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/guimaraes.2019.0876.

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<p>In nonlinear static analysis of masonry buildings, the hysteric behaviour of masonry walls is commonly idealized through a bi-linear resistance envelope defined by the lateral stiffness of the wall, the ultimate shear resistance and the ultimate inter-storey drift. Therefore, it becomes fundamental to properly set the modulus of elasticity and shear modulus for masonry as well as to properly evaluate the drift capacity of the walls.</p><p>In the paper, the combined influence of shear modulus and drift capacity definition on the assessment of seismic performance of masonry buildings is investigated in details by means of a simplified non-linear pushover type algorithm developed by the authors. In particular, two different definitions are considered for the drift capacity, in terms of ductility and in terms of percentage of the inter-storey height, while for the shear modulus a reasonable set of values is investigated according a database collected combining masonry test results available in the relevant scientific literature with an in situ experimental campaign carried out by the authors.</p><p>The results show how the variation in shear modulus can lead to conflicting outcomes for the evaluation of seismic performance of masonry buildings depending on the assumed definition of drift capacity.</p>

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Chakrabarti, Partha y Manoj K. Maiti. "A Simple Time Domain Structural Redundancy Analysis Procedure for Semi-Submersibles". En ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2007. http://dx.doi.org/10.1115/omae2007-29084.

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Offshore design codes like ABS and IMO require some level of redundancy in semi-submersible drilling vessels to withstand the loss of a slender bracing member without overall collapse of the structure, similar to fixed structures. Wave induced dynamic forces on semi-submersibles include hydrodynamic forces on ‘large body’, and inertia forces due to rigid body motions in six degrees of freedom. The amplitudes and phases of each component of the motion are important in defining the total force. Therefore, unlike static ‘pushover’ type analysis used in a relatively dynamically insensitive fixed jacket structure, semi-submersibles require nonlinear dynamic redundancy analysis in the time domain to determine the safety against collapse due to environmental loading. A simple time domain nonlinear analysis procedure is suggested in this study to capture the realistic behavior of the structure under wave loading. Dynamic loads are generated from hydrodynamic analysis of the floating body using a diffraction-radiation analysis program which assumes that the wave excitation is harmonic and so is the response. These loads are transferred to the structural analysis model. Each wave frequency is analyzed to produce a pair of loading conditions — ‘in-phase’ and ‘out of phase’. Combining these two components, a time history of the wave loading is created. In nonlinear structural analysis, first static loads are applied. Then wave load time history is applied for a few wave cycles in small increments. Results show that nonlinear analysis for one single cycle or two can usually predict the safety against collapse. If the analysis continues for a cycle or two, the structure passes the redundancy test. If it does not, the structure has a deficiency that needs to be addressed.

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Wang, Xiaolei, Dagang Lu y Gangling Hou. "Shaking Table Tests and Numerical Simulation Analysis of a 1:15 Scale Model Reinforced Concrete Containment Vessel". En 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-16668.

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In order to verify the seismic capacity of reinforced concrete containment vessel (RCCV) under the design earthquake level of SL-2 (peak acceleration 0.25g), shaking table tests of a 1:15 model RCCV are carried out. The El Centro earthquake motion record, the Taft earthquake motion record as well as an artificial earthquake acceleration are employed as the input excitations. There are three load cases for each test stage, with the peak ground acceleration (PGA) being 0.1g, 0.2g and 0.3g, respectively, corresponding to 0.088g, 0.175g and 0.263g for the prototype RCCV structure because of the acceleration ratio of 1.14. The test results indicate that under the earthquake excitation of the acceleration peak 0.1g, 0.2g and 0.3g, the tensile strains at monitoring points on the cylinder don’t reach the cracking level. Using the general-purpose nonlinear finite element analysis program ANSYS, a three-dimensional (3D) model of the scaled model reinforced concrete containment vessel is modeled. The numerical simulation analysis results could match the results of the tests very well. It is shown by the results of the shaking table tests that the model RCCV is still within the elastic range as a whole. In order to analyze the yield displacement of the RCCV, a static nonlinear pushover analysis of the RCCV is carried out. The result shows that the RCCV had sufficient seismic safety margin.

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Jafari, Azadeh, Behrouz Asgarian y Mohammad Daghigh. "Effect of Foundation Modeling on Extreme Response of Offshore Jack-up Unit". En ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/omae2010-20717.

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The demand for operation of mobile jack-up drilling rigs in offshore industry is increasing. Extreme response of jack-up platforms in sea environment requires improving the understanding of their nonlinear behavior. A sample jack-up platform located in Persian Gulf is modeled using three dimensional capabilities of USFOS considering both geometric and material nonlinearity. USFOS is a numerical tool for ultimate strength and progressive collapse analysis at frame structures such as jack-up platforms. Results of the analysis for the sample jack-up subjected to storm load pattern are compared for three different foundation modeling cases (pinned, fixed and spudcan modeling of foundation). Static pushover analysis is performed to determined jack-up behavior assuming different cases for fixity of foundation. It is observed that modeling of exact foundation by a simplified pinned model underestimates ultimate lateral strength of jack-up. A fixed based modeling overestimates lateral ultimate strength of the platform.

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Informes sobre el tema "Nonlinear static (pushover) analysis"

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Schiller, Brandon, Tara Hutchinson y Kelly Cobeen. Cripple Wall Small-Component Test Program: Dry Specimens (PEER-CEA Project). Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, noviembre de 2020. http://dx.doi.org/10.55461/vsjs5869.

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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 measures and documents seismic performance of wood-frame houses with cripple wall and sill anchorage deficiencies as well as retrofitted conditions that address those deficiencies. Three primary tasks support the earthquake loss-modeling effort. They are: (1) the development of ground motions and loading protocols that accurately represent the diversity of seismic hazard in California; (2) the execution of a suite of quasi-static cyclic experiments to measure and document the performance of cripple wall and sill anchorage deficiencies to develop and populate loss models; and (3) nonlinear response history analysis on cripple wall-supported buildings and their components. This report is a product of Working Group 4: Testing, whose central focus was to experimentally investigate the seismic performance of retrofitted and existing cripple walls. This present report focuses on non-stucco or “dry” exterior finishes. Paralleled by a large-component test program conducted at the University of California, Berkeley (UC Berkeley) [Cobeen et al. 2020], the present report involves two of multiple phases of small-component tests conducted at University of California San Diego (UC San Diego). Details representative of era-specific construction–specifically the most vulnerable pre-1960s construction–are of predominant focus in the present effort. Parameters examined are cripple wall height, finish style, gravity load, boundary conditions, anchorage, and deterioration. This report addresses all eight specimens in the second phase of testing and three of the six specimens in the fourth phase of testing. Although conducted in different testing phases, their results are combined here to co-locate observations regarding the behavior of all dry finished specimens. Experiments involved imposition of combined vertical loading and quasi-static reversed cyclic lateral load onto eleven cripple walls. Each specimen was 12 ft in length and 2-ft or 6-ft in height. All specimens in this report were constructed with the same boundary conditions on the top, bottom, and corners of the walls. Parameters addressed in this report include: dry exterior finish type (shiplap horizontal lumber siding, shiplap horizontal lumber siding over diagonal lumber sheathing, and T1-11 wood structural panels), cripple wall height, vertical load, and the retrofitted condition. Details of the test specimens, testing protocol (including instrumentation), and measured as well as physical observations are summarized. Results from these experiments are intended to support advancement of numerical modeling tools, which ultimately will inform seismic loss models capable of quantifying the reduction of loss achieved by applying state-of-practice retrofit methods as identified in FEMA P-1100 Vulnerability-Base Seismic Assessment and Retrofit of One- and Two-Family Dwellings.

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Zareian, Farzin y Joel Lanning. Development of Testing Protocol for Cripple Wall Components (PEER-CEA Project). Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, noviembre de 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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ANALYSIS OF TRANSIENT STRUCTURAL RESPONSES OF STEEL FRAMES WITH NONSYMMETRIC SECTIONS UNDER EARTHQUAKE MOTION. The Hong Kong Institute of Steel Construction, agosto de 2022. http://dx.doi.org/10.18057/icass2020.p.347.

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An accurate structural analysis is a fundamental requirement for modern design. Nevertheless, this is often difficult for systems comprised of nonsymmetric members, primarily because of their complicated cross-section shapes with non-coincidence of shear center and centroid and complex buckling modes. Recent research using efficient line-finite-element formulations has made significant progress in simulating the buckling behavior of arbitrary open-section members for static loads. This paper extends this method by providing for second-order dynamic analysis of nonsymmetric sectional members. The numerical algorithms, including mathematical derivations, are provided and thoroughly validated via their implementation within the nonlinear analysis program MASTAN2-v5.

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