Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"Ground motion characteristics"”.
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Effect of Ground Motion Characteristics on the Seismic Response of Torsionally Coupled Elastic Systems
… a systematic investigation of the effects of ground motion characteristics, especially its multi-directional character, on the response of torsionally coupled elastic structural systems. The ground motion model is probabilistic and is founded on the assumption of the existence of ground motion …
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One-dimensional site response analyses in potentially liquefiable soil profiles
… understanding of the soil properties and ground motion characteristics. The limitations of simplified liquefaction assessment methods have prompted an increase in the use of non-linear dynamic analysis methods. Focusing on onedimensional site response of a soil column, this thesis …
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Prediction of seismic design response spectra using ground characteristics
… 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 …
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Application of Wavelet Transform to Endurance Time Analysis Method for Performance-based Seismic Design
… the world, but the number of reliable recorded ground motion data for a given site is often limited. In addition, the use of present methodologies to modify existing earthquake records to match site conditions could change the relationship between the recorded earthquake characteristics and …
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Innovative techniques for seismic-resistant bridge columns under ground motion excitations
… developed using LS-DYNA software. The effects of ground motion characteristics including far-field motions, near-fault motions without forward-directivity, near-fault motions with forward-directivity, and near-fault motions with fling-step on full-scale column models were investigated. An …
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Analyzing the Effect of Moving Resonance on Seismic Response of Structures using Wavelet Transforms
Nonlinear structures, when subjected to multiple ground motion records that are scaled to consistent ground motion intensity show significant variation in their response. This effect of ground motion randomness on the variation of structural response is defined as Record-to-Record (RTR) …
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Implications from a geotechnical investigation of liquefaction phenomena associated with seismic events in the Charleston, SC area
… region, little hard data exists in terms of ground motion characteristics or levels of seismic loading. A two-year field investigation was undertaken by Virginia Tech to study the liquefaction findings associated with the 1886 event from the perspective of geotechnical engineering. This …
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Torsional Ground Motion Effects on the Seismic Response of Continuous Box-girder Highway Bridges
… and forces due to their complex dynamic characteristics. Therefore, many studies have been conducted to provide insight into their seismic response characteristics under various types of ground motions. Undoubtedly, investigations relating to both structural components as well as the …
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Evaluating Liquefaction Triggering Potential from Induced Seismicity in Oklahoma, Texas, and Kansas
… California). Consequently, due to differences in ground motion characteristics and regional geology, the depth-stress reduction factor (rd) and Magnitude Scaling Factor (MSF) relationships used in these variants may be unsuitable for use with induced earthquakes in OTK. This is because both rd, …
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Seismic Response of Structures on Shallow Foundations over Soft Clay Reinforced by Soil-Cement Grids
… resulting in stronger accelerations at the ground surface for the input motions used in this study. The response of soil-cement grid reinforced soft soil depends on the area replacement ratio, depth of improvement and ground motion characteristics. The recorded responses of the structures …
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Seismic Performance Assessment of Wood-Frame Shear Wall Structures
… of damping, hysteresis model shape variations, ground motion characteristics, level of gravity loads, and floor acceleration variations. A subset of building model designs that were originally designed for the development of FEMA P-695 methodology is adapted for the numerical evaluations and a …
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Seismic Performance and Damage Risk of Modular CLT Housing Using Nonlinear Time History Analysis
… earthquake engineering framework. Ground motion data sets were established for three seismic regions: (1) Western U.S. with forward-directivity pulses, (2) Western U.S. without forward-directivity pulses, and (3) Central and Eastern U.S. Numerical models for each house were …
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Seismic Response and Analytical Fragility Functions for Curved Concrete Box-Girder Bridges
… bridge models are subjected to four sets of ground motions representing different site soil conditions and spectral characteristics. A total of 800 response history analyses are performed and the results are used to develop analytical component and system fragility functions for a range of …
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Bayesian Methods for Intensity Measure and Ground Motion Selection in Performance-Based Earthquake Engineering
… nature of characterizing the earthquake ground motion by selecting appropriate ground motions and Intensity Measures (IM) for seismic analysis. This open-ended nature changes the quantified building performance depending upon the ground motions and IMs selected. So, improper ground motion …
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Multiple earthquake effects on degrading reinforced concrete structures
… pinching of load-displacement loops. Moreover ground motion sequences used in previous studies were randomized and hence the characteristics of ground motions effects on the response were not accurately accounted for. Findings from previous research indicated that repeated shaking has a minimal …
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Contributions to the analysis and mitigation of liquefaction in loose sand slopes
… the water table. The numerical predictions of ground response have been evaluated using results from a well-instrumented centrifuge model test (SSK01) performed by colleagues at the University of California at Davis (Kamai et al., 2008). The model includes a full array of PV drains installed …