Dissertations / Theses on the topic 'Earthquakes effects'
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Valle, Blandine C. "Effects of long duration earthquakes on bridge structures." Online access for everyone, 2005. http://www.dissertations.wsu.edu/Thesis/Fall2005/b%5Fvalle%5F110805.pdf.
Full textKoyama, Junji. "Effects of earthquakes on partially-filled water tanks." Thesis, Virginia Tech, 1994. http://hdl.handle.net/10919/43432.
Full textThis thesis is concerned with the effects of earthquakes on partially-filled water tanks. The analysis is applicable to rectangular water tanks, which have received little attention to date. The analysis is relatively involved and includes the derivation of the equations of motion for the vibration of the whole of tank by means of substructure synthesis, a stochastic analysis relating the random ground motion caused by earthquakes to the random vibration of the tank, a stochastic characterization of the fluid pressure and computation of the probability of failure of the tank.
Master of Science
Koyama, Jun. "Effects of earthquakes on partially-filled water tanks /." This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-06232009-063240/.
Full textParathiras, Achilleas N. "Displacement rate effects on the residual strength of soils." Thesis, Imperial College London, 1994. http://hdl.handle.net/10044/1/7444.
Full textRohanimanesh, Mohammad S. "Mutual pounding of structures during strong earthquakes." Diss., This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-06062008-144915/.
Full textWilkinson, Sean. "Simplified analysis of asymmetric buildings subjected to earthquakes." Thesis, Queensland University of Technology, 1997.
Find full textLiperovskaya, E. V., Claudia-Veronika Meister, M. Parrot, V. V. Bogdanov, and N. E. Vasil‘eva. "On Es-spread effects in the ionosphere connected to earthquakes." Universität Potsdam, 2006. http://opus.kobv.de/ubp/volltexte/2007/1500/.
Full textLee, F. H. "Centrifuge modelling of earthquake effects on sand embankments and islands." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372657.
Full textAl-Rawahy, Salim Y. S. "Effects of mining subsidence observed by time-lapse seismic reflection profiling." Thesis, Durham University, 1995. http://etheses.dur.ac.uk/5125/.
Full textLopez, Ibaceta Alvaro Francisco. "Seismic Performance of Substandard Reinforced Concrete Bridge Columns under Subduction-Zone Ground Motions." PDXScholar, 2019. https://pdxscholar.library.pdx.edu/open_access_etds/4977.
Full textFritsche, Stefan. "Large historical earthquakes in Switzerland : multidisciplinary studies on damage fields and site-effects /." Zürich : ETH, 2008. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17710.
Full textThompson, Theron James. "The effects of long-duration earthquakes on concrete bridges with poorly confined columns." Online access for everyone, 2004. http://www.dissertations.wsu.edu/Thesis/Fall2004/T%5FThompson%5F090304.pdf.
Full textWaggoner, Sarah Elizabeth. "Effects of repetitive, small magnitude earthquakes on groundwater chemistry in Faulkner County, Arkansas." OpenSIUC, 2011. https://opensiuc.lib.siu.edu/theses/586.
Full textPadgett, Jamie Ellen. "Seismic Vulnerability Assessment of Retrofitted Bridges Using Probabilistic Methods." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/14469.
Full textSeid-Karbasi, Mahmood. "Effects of void redistribution on liquefaction-induced ground deformations in earthquakes : a numerical investigation." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/12868.
Full textHaeri, Seyed Mohsen. "Response of earth and rockfill dams to strong earthquakes including dam-foundation interaction effects." Thesis, Imperial College London, 1988. http://hdl.handle.net/10044/1/47094.
Full textJoshi, Varun Anil. "Near-Fault Forward-Directivity Aspects of Strong Ground Motions in the 2010-11 Canterbury Earthquakes." Thesis, University of Canterbury. Department of Civil and Natural Resources Engineering, 2013. http://hdl.handle.net/10092/8987.
Full textFuchs, Florian [Verfasser]. "Dynamic triggering: The effects of remote earthquakes on volcanoes, hydrothermal systems and tectonics / Florian Fuchs." Bonn : Universitäts- und Landesbibliothek Bonn, 2015. http://d-nb.info/1077289243/34.
Full textHoel, Karin Harnæs, and Bjørn Thomas Svendsen. "The Effects of Near-fault Earthquakes On a High-rise Structure In The Oslo Area." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for konstruksjonsteknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18539.
Full textVitoontus, Soravit. "Risk assessment of building inventories exposed to large scale natural hazards." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/43676.
Full textMoore, Andrew. "The Effects of the Earthquakes on the Classical Musical Life of Christchurch, September 2010 - May 2013." Thesis, University of Canterbury. Music, 2013. http://hdl.handle.net/10092/9458.
Full textRyan, Megan Elizabeth. "The effects of the Christchurch earthquakes of 2010 and 2011 on the quality of life of children and adolescents with disabilities." Thesis, University of Canterbury. School of Health Sciences, 2015. http://hdl.handle.net/10092/10741.
Full textMcDaniel, Caleb Alan. "The effects of grain size on the strength of magnesite aggregates deforming by low temperature plasticity and diffusion creep." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1526571269872349.
Full textLillo, Bustos Nicolás A. "Essays on the effects of the Homestead Act on land inequality and human capital, the effects of land redistribution on crop choice, and the effects of earthquakes on birth outcomes." Thesis, University of Warwick, 2017. http://wrap.warwick.ac.uk/113453/.
Full textRenouf, Charlotte Alicia. "Do the Psychological Effects of Ongoing Adversity in a Natural Context Accumulate or Lessen over Time? The Case of the Canterbury Earthquakes." Thesis, University of Canterbury. Department of Psychology, 2012. http://hdl.handle.net/10092/7397.
Full textConnolly, Maria Josephine. "The impacts of the Canterbury earthquakes on educational inequalities and achievement in Christchurch secondary schools." Thesis, University of Canterbury. Geography, 2013. http://hdl.handle.net/10092/7903.
Full textAcar, Fikri. "Low Cycle Fatigue Effects In The Damage Caused By The Marmara Earthquake Of August 17, 1999." Phd thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/2/12605534/index.pdf.
Full texts hysteretic model have been calibrated using a search method. In the calibration process experimental data of a total of twenty-two beam and column specimens, tested under constant and variable amplitude displacement histories, has been used. Fine-tuning of deterioration parameters is essential for more realistic predictions about inelastic behavior and structural damage. In order to provide more realistic damage prediction, three ranges of parameters are proposed. Some damage controlling structural parameters have been assessed via a large number of two-dimensional section analyses, inelastic time history and damage analyses of SDOF systems and seismic vulnerability analyses of reinforced concrete buildings. Inelastic time history and damage analyses of numerous SDOF systems have been carried out to determine whether the loading history has an effect on damage and dissipated hysteretic energy. Then this emphasis is directed to the analyses of MDOF systems. In the analyses of the SDOF systems, various forms of constant and variable amplitude inelastic displacement reversals and synthetic ground motions composed of one of the four earthquake records preceded or followed by its modified records acted as a prior or successive earthquake, have been used. The analyses of two five-story R/C buildings have been caried out using synthetic accelerograms comprised of base input provided by the two recorded ground motions. It is shown that both damage progression and cumulative hysteretic energy dissipated along a path seem to depend on the number and amplitude of cycles constituting the path. However, final damage and accumulated hysteretic energy dissipated along a loading path are independent of the ordering of the same number and amplitude cycles along the path. There is a nonlinear relationship between the earthquake excitation intensity and final damage attained in the end. Increase in the acceleration amplitude leads to exponential increase in damage. As the prior earthquake intensity increases the damage from the succeding main earthquake decreases. A definite ground motion acting as prior and successive earthquake causes substantially different amount of damage. Prior earthquake damage does not substantially affect the maximum drift response in future larger earthquakes. A MDOF frame type structure with aprior damage suffers less overall damage in an earthquake in comparison with the one without a prior damage.
Rault, Claire. "Effets de site, endommagement et érosion des pentes dans les zones épicentrales des chaînes de montagnes actives." Thesis, Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLEE006/document.
Full textLandslides are a major natural hazard that cause significant damages and casualties to people. Earthquakes are one of their main triggers in active mountain belts. In epicentral area, the passage of seismic-waves that disrupt the stress-field, leads the slope stability threshold to be exceeded. Co-seismic slope failure probability thus depends on complex interactions between the ground-motion and the slope geology and geometry. A few seismic data are available on mountain slopes and the resolution of ground-motion models is generally low. Yet strong variation of ground-motion from one ridge to another can be felt due to site effects. We document site effects across topography and show the complexity of slope responses to earthquakes using a seismic network set across a Taiwanese ridge. Six broadband seismometers were set along the profile of this 3km wide ridge. From March 2015 to June 2016, more than 2200 earthquakes (magnitude Ml>3 and hypocentral distance<200km) were recorded. Although the sites are within a distance of hundreds of meters they all show different characteristic responses that are related to a complex combination of the geology and topography of the sites. At medium frequency corresponding to groundmotion wavelength that could affect slope stability, the ground-motion amplification is mostly related to the local geology and the topographic effect seems relatively negligible as attested by current indicators measured at the stations (PGA, PGV, Arias, SSR). However the duration of strong ground-motion at the ridge crests and slope toe seems to be related to possible resonance effects and surface wave generation due to the geometry of the topography. The strong contribution of the geology to co-seismic landslide trigger is demonstrated by the analysis of their position along hillslopes for the co-seismic landslides triggered by the Northridge earthquake (Mw 6.7, 1994, USA), the Chi-Chi earthquake (Mw 7.6, 1999, Taiwan), and the Wenchuan earthquake (Mw 7.9, 2008, China). Indeed, although co-seismic landslides are statistically located higher on hillslopes than the rainfall-induced landslides, we show that this tendency is strongly modulated by the geology. According to the “potential landslides attractiveness” of geological structures, such as faults or lithological contrasts, present in the watershed, the slope failure would occur more or less upslope, where the failure probability is the highest.Slope mechanical properties are not well constrained in mountain area. Their geotechnical parameters are usually estimated using information provided by geological maps, but even for the same lithology they can strongly differ for one basin to another. Considering one simple friction model for seismic slope stability, we propose to invert Coulomb related parameters using the slope distributions of the landslides triggered by the Northridge, Chi-Chi and Wenchuan earthquakes. The spatial variation of these parameters seems to be in agreement with the lithology and soil depth at the first order
Brax, Marleine. "Aléa et microzonage sismiques à Beyrouth." Thesis, Grenoble, 2013. http://www.theses.fr/2013GRENU050.
Full textLebanon is one of the countries that have not suffered from large destructive earthquakes foralmost two centuries. It is however lying on the 1000 km long, left lateral Levant fault thatseparates the Arabic plate in the east from the African plate in the west. Its main branches inLebanon are the Yammouneh fault that crosses the country from south to north, the Serghayaand Rachaya faults in its Eastern part, the Roum and Mount Lebanon Thrust faults in itsWestern part. These faults have generated destructive earthquakes in the long known historyof the area. The largest events are: The July 551 earthquake on the Mount Lebanon Thrustfault, the May 1202 earthquake on the Yammouneh fault, the October 1759 on the Rachayafault and the November 1759 on the Serghaya fault. From all above, one can conclude thatLebanon is exposed to a significant seismic hazard. Assessing the local seismic hazard andrisk is therefore of primary importance for the whole country.The objective of the work undergone in this PhD is to take advantage of the latest advancesachieved worldwide to promote rather inexpensive, though reliable, seismic hazardassessment tools, to try to apply them in Lebanon starting with the big cities and specificallythe capital Beirut. These studies will help to understand the Lebanese seismic risk andsubsequently to start to elaborate seismic policies and codes that may help reducing this risk.A temporary seismological network consisting of 10 stations has been installed in Beirut anda part of its suburbs. Several tens of local and regional earthquakes could be recorded, andallowed to estimate the site response at selected sites in Beirut through the standard site toreference spectral ratio method ("SSR") on earthquakes, compared to the horizontal tovertical ratio ("H/V") calculated on earthquakes and on ambient noise. The same recordingscould also be used via the empirical Green Function’s technique ("EGF") to predict theseismic ground motion corresponding to a Mw7.5 on the Yammouneh fault. However, due tolimitations in near-field applications of the EGF technique, this prediction exercise wasperformed in two steps and with two complementary techniques: a weak event recording wasfirst used to simulate a Mw6.5 earthquake on the Yammouneh fault, while several, carefullyselected ground motion prediction equations (GMPE) were used to perform a comparativeprediction for the same earthquake. This EGF/GMPE comparison then allowed tuning theGMPE prediction of ground motion at various sites within Beirut for the target Mw7.5 event.The results were then extended in view of proposing a framework for a future microzonationviimap. A comprehensive campaign of ambient noise measurements was achieved for 615 sitesof Beirut municipality and close suburbs, the H/V processing of which allowed to derive arobust map of resonance frequency for the whole area. In addition, active and passive seismicmeasurements were conducted on different geological units near the 10 formerlyinstrumented sites, which provided quantitative estimates of the shallow S-wave velocitythrough the Rayleigh wave dispersion curves. These geophysical measurements permitted toprovide direct estimates of the shear waves velocity, which prove much more reliable thanthe highly scattered estimates derived from the compilation of the availablegeological/geotechnical parameters and the use of existing correlations equations betweenSPT N-value and S-wave velocity Vs
Hill-Butler, C. "Evaluating the effect of large magnitude earthquakes on thermal volcanic activity : a comparative assessment of the parameters and mechanisms that trigger volcanic unrest and eruptions." Thesis, Coventry University, 2015. http://curve.coventry.ac.uk/open/items/5f612a7d-ebbf-4d38-90aa-89c4984a1c0f/1.
Full textMcCormack, Thomas C. "A Methodology for Regional Seismic Damage Assessment and Retrofit Planning for Existing Buildings." PDXScholar, 1996. https://pdxscholar.library.pdx.edu/open_access_etds/1239.
Full textCorbani, Silvia. "Análise dinâmica elasto-plástica de estruturas metálicas sujeitas a excitação aleatória de sismos." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/3/3144/tde-13032007-092337/.
Full textSeismic actions occur with low intensity and often in Brazil, however they occur in Latin-American countries on the Pacific Coast and in Portugal, arousing interest in this subject of the Brazilian engineering. In this work, a numerical model is presented for the analysis on the elastic-plastic behavior of steel planar framed structures under random seismic excitation. For random vibrations, a Monte Carlo type simulation is used. This simulation is based on the ?Synthetic Wind?, proposed by Prof. Mario Franco. In this simulation, combinations of series of harmonic loads are generated with their amplitude given by certain provided Power Spectrum Density Functions (PSDF) of ground acceleration and pseudorandomly set phase angles. The used PSDF is reduced model of the Kanai-Tajimi model that determine combinations of non-dimensional series whose results by the behavior elastic are adjusted by international codes Elastic Response Spectra. The step-by-step time integration is performed for each load function using the Newmark method. In order to model, the elastoplastic effect is used the plastic hinge concept. Therefore, at each step the hinge formation is verified. If a certain section reaches its full plastic bending moment, this value of moment is maintained and a hinge in that section is introduced in the model with null stiffness, allowing for free finite rotations. If the rotation in a certain hinged section is reversed, elastic behavior is restored by elimination of the hinge from the model. At the end of this process, a large quantity of response data is obtained. A statistic treatment of these results is performed, in the way that is possible conclude, from the engineering point of view, the probability of occurrence of these events. A statistic treatment based sound engineering conclusions is done for the happened probable events. In order to validate the proposed methodology, a five stories building is analyzed. Satisfactory agreement is obtained when compared to results from the literature, and the results are very stable with respect to the time integration.
Filiatrault, Andre. "Seismic design of friction damped braced steel plane frames by energy methods." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/28776.
Full textApplied Science, Faculty of
Civil Engineering, Department of
Graduate
Neurohr, Theresa. "The seismic vulnerability of art objects /." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=99782.
Full textThe seismic behaviour of three unrestrained display cases, storage shelves, and a 6m long dinosaur skeleton model structure was investigated according to the seismic hazard for Montreal and representative museum floor motions were simulated for that purpose. Particular attention was paid to the support conditions, the effects of modified floor surface conditions, the sliding and rocking response of unrestrained display cases, the location (floor elevation) of the display case and/or storage shelves, art object mass, and the dynamic properties of the display cases/storage shelves. The seismic vulnerability of art objects was evaluated based on the seismic response of the display cases/storage shelves at the level of art object display. The display cases were investigated experimentally using shake table testing. Computer analyses were used to simulate the seismic behaviour of storage shelves, and the seismic sensitivity of the dinosaur structure was determined via free vibration acceleration measurements. The floor contact conditions and floor elevation had a crucial effect on the unrestrained display cases, causing them to slide or rock vigorously. The distribution of content mass had a large impact on the response of the shelving system. As a result of experimental and analytical analyses, recommendations and/or simple mitigation techniques are provided to reduce the seismic vulnerability of objects of art.
Castro, Cruz David Alejandro. "Prédiction des mouvements sismiques forts : apport de l’analyse du comportement non-linéaire des sols et de l’approche des fonctions de Green empiriques." Thesis, Université Côte d'Azur (ComUE), 2018. http://www.theses.fr/2018AZUR4216/document.
Full textSeismic hazard assessments must consider different aspects that are involved in an earthquake process and affect the surface ground motion. Those aspects can be classified into three main kinds. 1) the source effects are related to the rupture process and the release of energy. 2) the path effects related to the propagation of energy inside Earth. 3) the influence of the shallow layers geotechnical characteristics; the so-called site-effects. The site effects are considered in risk mitigation through the evaluation of the seismic soil response. Under cyclic solicitations the soil shows a non-linear behavior, meaning that the response will not only depend on soil parameters but also on seismic motion input characteristics (amplitude, frequency content, duration, …). To estimate the non-linear site response, the usual practice is to use numerical simulations with equivalent linear analysis or truly non-linear time domain approach. In this document, we study the influence of the nonlinear soil behavior on the seismic site response by analyzing the earthquake recordings from borehole array configurations. We use the Kiban Kyoshin network (KiK-Net) data. All 688 sites are instrumented with two 3-components accelerometers, one located at the surface and the another at depth. From these data, we compute the ground motion amplifications from the surface to downhole recordings by the computing Fourier spectral ratios for the aim to compare between the spectral ratio for weak and strong ground motion. The main effect of the non-linear behavior of the soil on the site transfer function is a shift of the amplification towards lower frequencies. We propose a new methodology to quantify those changes and study the nonlinear effects. This work results in a site-dependent relationship between the changes in the site response and the intensity parameter of the ground motion. The method is tested analyzing the records of the earthquake of Kumamoto (Mw 7.1, 2016). Posteriorly, we propose to integrate a correlation between seismic moment and the duration of the fault (Courboulex et al., 2016) in the empirical Green’s function method. This methodology was applied to simulate one seduction event in Equator, and we compare the results with the records of the Pedernales earthquake (Mw 7.8, 2016) in the city of Quito. We attempt to take in account the nonlinear effects in the empirical Green’s function method. We use the methodologies of the first part of this document based on the frequency shift parameter. The procedure could be implemented in other methodologies that can predict an earthquake at a rock reference site, such as the stochastic methods. We test the procedure using the accelerometric records for one of the aftershocks o the Tôhoku earthquake (Mw 7.9)
Bugeja, Michael. "Inelastic earthquake response of asymmetric structures." Thesis, Queensland University of Technology, 1996. https://eprints.qut.edu.au/36027/1/36027_Bugeja_1996.pdf.
Full textMuthukumar, Susendar. "A Contact Element Approach with Hysteresis Damping for the Analysis and Design of Pounding in Bridges." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/5286.
Full textPaultre, Patrick. "Evaluation of seismic performance of concrete frame structures in Canada." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=75439.
Full textThree full scale reinforced concrete specimens representing an exterior beam-column-slab subassemblage of the Montreal structure were tested in order to determine the behaviour of these components. The role of the spandrel beam in limiting the effective slab width and its role in transferring shear to the joint region was investigated.
Analytical procedures were developed in order to predict the responses of main structural components to the combined loading effects of axial load, moment and shear. In addition a hysteretic behavioural model was developed in order to account for strength and stiffness degradation as well as pinching of the hysteretic response.
The analytical procedures were then used to model the responses of the components of these buildings. Non-linear dynamic analyses were carried out on each building for a series of artificially generated accelerograms. The results of the tests as well as the results of the non-linear dynamic analyses enabled an assessment of the performance of different building designs and an assessment of current code requirements.
Kallros, Mikael Kaj. "An experimental investigation of the behaviour of connections in thin precast concrete panels under earthquake loading." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26707.
Full textApplied Science, Faculty of
Civil Engineering, Department of
Graduate
Bou, Nassif Aline. "Mouvements sismiques forts dans les régions montagneuses et mouvements de terrain induits." Electronic Thesis or Diss., Université Grenoble Alpes, 2023. http://www.theses.fr/2023GRALU039.
Full textDuring an earthquake, a high degree of variability in damage distribution, encompassing both structural damage and co-seismic landslides, is commonly observed in mountainous regions near the seismic source. Among other factors, this spatial variability can be partly attributed to the amplification of seismic waves caused by surface topography. While this effect has long been documented, it remains poorly understood and is rarely incorporated into building specification codes. My thesis is dedicated to predicting the amplification of ground motion caused by surface topography in close distances to an earthquake, and studying its potential impact on co-seismic landslides distribution patterns.To achieve this goal, my work initially relies on neural network analysis of previously-available synthetic data obtained from 3D finite-differences simulations of seismic wave propagation. This analysis aims to derive a physics-based estimator of topographic site effects in close distances to the source. This proxy, which I refer to as the i-FSC proxy (illuminated Frequency Scaled Curvature), depends on the S-wavelength, the curvature of the topographic surface, and a new parameter called the “normalized seismic illumination angle” which quantifies the slope's exposure to the incoming wavefield. This user-friendly tool does not require high computational resources; it only uses a digital elevation map and the position of the seismic source to predict amplification factors at any point of the surface topography. The i-FSC allows exploring the variations in topographic amplification influenced by nearby seismic sources. This advancement is particularly significant as the areas closest to the fault are typically the ones most severely affected during earthquakes.Subsequently, the i-FSC proxy is employed to investigate the correlation between ground motion amplification and the spatial distribution of earthquake-induced landslides triggered by events such as the 2015 Gorkha earthquake (MW 7.8), the 2016 Kumamoto earthquake (MW 7.1), and the 2016 Kaikōura earthquake (MW 7.8). The results indicate that co-seismic landslides tend to be localized in amplified areas. Different controls on the landslide triggering at different frequencies have been identified. At lower frequencies, landslides tend to concentrate on slopes facing away from the seismic source (with higher seismic illumination angles). At smaller scales, the location of landslides mimics the amplification maps at higher frequencies, which are primarily influenced by surface topography curvature. Furthermore, landslides appear to also cluster at the interfaces between illuminated and non-illuminated slopes, which may indicate areas where slope deformation is the greatest. The results also highlight the crucial importance of considering the effect of topographic amplification, simply derived by the i-FSC proxy, together with other classic factors such as slope steepness, for a better understanding of the complex mechanisms governing the spatial distribution of earthquake-induced landslides at local and regional scales.The results of this study hold significant importance, as they could guide future research efforts aimed at developing more effective risk assessment and mitigation strategies in mountainous regions
Yung, Willy Chi Wai. "Innovative energy dissipating system for earthquake design and retrofit of timber structures." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/30128.
Full textApplied Science, Faculty of
Civil Engineering, Department of
Graduate
Malyszko, Thomas E. "The nonlinear response of reinforced concrete coupling slabs in earthquake-resisting shearwall structures /." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66183.
Full textSheikh, MD Neaz. "Seismic assessment of buildings in Hong Kong with special emphasis on displacement-based approaches." Thesis, Click to view the E-thesis via HKUTO, 2005. http://sunzi.lib.hku.hk/hkuto/record/B31456662.
Full textParmar, Surinder Singh. "2-D non-linear seismic analysis of one-storey eccentric precast concrete buildings." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26728.
Full textApplied Science, Faculty of
Civil Engineering, Department of
Graduate
Loots, Jurie. "Computational assessment of seismic resistance of RC framed buildings with masonry infill." Thesis, Stellenbosch : Stellenbosch University, 2005. http://hdl.handle.net/10019.1/50299.
Full textSome digitised pages may appear illegible due to the condition of the original hard copy.
ENGLISH ABSTRACT: Reinforced concrete (RC) frames with unreinforced masonry infill form the structural system of many buildings and this is also true for South Africa. It is common practice to consider the masonry infill as a non-structural component and therefore it does not contribute to the performance of the Re frame buildings under lateral loading such as earthquake loading. This is done by leaving a sufficient gap between the Re frame and the infill. This ensures that there is no contact between the frame and the infill during an earthquake event. However, it has been suggested that masonry infill can play a significant role in the performance of a Re frame building under lateral loading. The first part of the study focuses on the South African situation. The relevance of shear walls in these Re frame buildings as well as the size of the gap (between frame and infill) left in practice, are investigated. This is done by finite element analysis. The second part of the study focuses on the effects that the infill can have on the global performance of the structure when there is full contact between the Re frames and infill. The effect of openings in the infill to the response of the frame is also investigated. Finite element models of single span Re frames with infill is built and analyzed in order to investigate possible damage to the infill, frame infill interaction and to obtain the non linear stiffness of the frame with infill as a whole. This obtained non linear stiffness can be modelled in Diana as a non linear spring that will be used in the development of a simplified analysis method. The simplified method developed consists of a frame and two such non linear springs, placed diagonally, and which have the same force versus displacement behaviour as the original frame with infill. These single span frames can be added together to model a whole frame. In a first step to generalise the simplified method, various geometries of infills are considered, varying span and height, as well as opening percentage, representing windows and doors of varying total area and positioning. However, in this study a single masonry type, namely solid baked clay bricks set in a general mortar, is considered. To generalise the approach further, other masonry types can be considered in the same way. The use of these springs in a simplified model saves computational time and this means that larger structures can be modelled in Diana to investigate response of'Rf' frame buildings with infill. The work reported in this thesis considers only in-plane action. Out-of-plane-action of the masonry infill has been reported in the literature to be considerable, under the condition that it is sufficiently tied to the frame to prevent mere toppling over, causing life risking hazards in earthquake events. This matter should be studied in continuation of the current research to generalise the simple approach to three dimensions.
AFRIKAANSE OPSOMMING: Gewapende betonrame (GBR-e) met ongewapende messelwerk invulpanele (invul) vorm die strukturele ruggraat van vele geboue en dit geld ook vir geboue in Suid-Afrika. Dit is algemene praktyk om die invulpaneel in sulke geboue as 'n nie-strukturele komponent te beskou. Daarvolgens dra dit nie by tot die gedrag van 'n GBR gebou onderhewig aan 'n aarbewing nie. Dit word bereik deur 'n groot genoeg gaping tussen die betonraam en die invul te los. Die gevolg is dat daar geen kontak tussen die betonraam en die invul plaasvind indien daar 'n aardbewing sou voorkom nie. Dit is egter voorgestel dat invul 'n noemenswaardige rol kan speel in die gedrag van 'n GBR gebou onderwerp aan 'n horisontale las. Die eerste deel van die studie fokus op die Suid-Afrikaanse situasie. Die relavansie van skuifmure in GBR geboue asook die grootte van die gaping (tussen die raam en invul) wat in die praktyk gebruik word, word ondersoek. Dit word gedoen met behulp van eindige element analises. Die tweede deel van die studie fokus op die effek wat invul kan hê op die globale gedrag van 'n struktuur wanneer daar volle kontak tussen die GBR en die invul is. Die effek wat die teenwoordigheid van openinge in die invul kan hê op die gedrag van 'n GBR is ook ondersoek. Eindige element modelle van enkelspan GBR met invul is gemodelleer en geanaliseer om die moontlike skade aan die invul, die interaksie tussen die GBR en die invul asook die nie-lineêre styfheid van die raam en invul as 'n geheel, te ondersoek. Hierdie nielineêre styfheid kan in Diana as 'n nie-lineêre veer gemodelleer word en word gebruik in die ontwikkeling van 'n vereenvoudigde metode. Hierdie vereenvoudigde metode wat ontwikkel is, bestaan uit 'n raam en twee sulke nielineêre vere (diagonaal geplaas). Die raam met vere het dieselfde krag teenoor verplasingsgedrag as die van die oorspronklike raam met invul wat dit voorstel. Hierdie rame kan saamgevoeg word om 'n raam uit 'n gebou as 'n geheel te modelleer. Verskeie invul geometrieë word gebruik in die analises in 'n eerste stap om die vereenvoudigde metode te veralgemeen. Die span en hoogte asook opening persentasie van die invul word gevariëer om vensters en deure van veskeie grootte en posisie voor te stel. In die studie, 'n enkel messelwerk tipe, naamlik solied klei bakstene geset in algemene mortar, word gebruik. Ander messelwerk tipes kan gebruik word om die metode verder te veralgemeen. Die gebruik van die vere in die vereenvoudigde metode spaar berekenings tyd en dit beteken dat groter strukture in Diana gemodelleer kan word om die gedrag van GBR geboue met invul te ondersoek. Die werk gedoen in die tesis neem slegs in-vlak aksie in ag. Literatuurstudie dui daarop dat goeie uit-vlak-aksie van messelwerk invul bestaan, mits dit goed geanker is aan die raam om te verseker dat dit nie kan omval en 'n gevaar vir lewens in 'n aardbewing inhou nie. Dit behoort verder bestudeer te vord in die vervolging van die huidige ondersoek om die vereenvoudige metode na drie dimensies te veralgemeen.
Luettich, Scott M. "Subsidence approach to risk of damage in earthquake-induced liquefaction." Thesis, Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/20160.
Full textWong, Sze-man, and 黃思敏. "Seismic performance of reinforced concrete wall structures under high axial load with particular application to low-to moderate seismicregions." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B34739531.
Full textIssa, Camille Amine. "Nonlinear earthquake analysis of wall pier bridges." Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/54297.
Full textPh. D.
Lee, Jimin. "Earthquake site effect modeling in sedimentary basins using a 3-D indirect boundary element-fast multipole method." Diss., Online access via UMI:, 2007.
Find full textMalushte, Sanjeev R. "Prediction of seismic design response spectra using ground characteristics." Thesis, Virginia Tech, 1987. http://hdl.handle.net/10919/45802.
Full textThe available earthquake records are classified into five groups according to their site stiffness and epicentral distance as the grouping parameters. For the groups thus defined, normalized response spectra are obtained for single-degree-ofâ freedom and massless oscillators. The effectiveness of the grouping scheme is examined by studying the variance of response quantities within each group. The implicit parameters of average frequency and significant duration are obtained for each group and their effect on the response spectra is studied. Correlation analyses between various ground motion characteristics such as peak displacement, velocity, acceleration and root mean square acceleration are carried out for each group.
Smoothed design spectra for relative and pseudo velocities and relative acceleration responses of single degree of freedom oscillators and the velocity and acceleration responses of massless oscillators are proposed for each group. Methods to predict relative velocity and relative acceleration spectra directly from the pseudo velocity spectra are presented. It is shown that the relative spectra can be reliably estimated from the pseudo spectra. The site dependent design spectra are defined for a wide range of oscillator periods and damping ratios.
Master of Science