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 19 of 19 for “"Earthquake Ground Motion"”.
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Evaluation of Structural Response and Damage Resulting From Earthquake Ground Motion
… or preclude strong response and damage from earthquake ground motion is a complex problem and is the subject of this thesis. The factors leading to strong response are not well understood and clearly involve more than peak acceleration and yield level. Present methods for evaluation of damage …
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Enhancements in earthquake ground motion assessment through regional Vₛ₃₀ characterization and Vₛ₃₀ scaling
… can have significant effects on the intensity of ground shaking caused by earthquakes. Vₛ₃₀, the time-averaged shear wave velocity in the upper 30m, is a prevalently utilized parameter in numerous predictive ground motion models (GMMs) and building codes to account for site effects. Although the …
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Modeling of nonstationary earthquake ground motion and biaxial and torsional response of inelastic structures
… of the structure, and nonstationary behavior of ground excitation. A new stochastic ground motion model is proposed in which both intensity and frequency content are functions of time. Corresponding methods for estimating the model parameters based on actual earthquake records are also given. The …
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Application of mass/stiffness eccentricity to control response of structures subjected to earthquake ground motion
… eccentricity to control the translational motion of structures subjected to earthquake ground motion. Different discrete and continuous mathematical models of structures were used for this study. Discrete models are single story building and multi story building, and continuous models are …
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An Investigation of the Behavior of Structural Systems with Modeling Uncertainties
Recent advancements in earthquake engineering have caused a movement toward a probabilistic quantification of the behavior of structural systems. Analysis characteristics, such as ground motion records, material properties, and structural component behavior are defined by probabilistic …
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Seismic Damage Analysis and Design of Unreinforced Masonry Buildings
… damage to masonry buildings subjected to earthquake ground motion is proposed. Damage is expressed as a combination of the effects of excessive deformation and repeated loadings. Model parameters for unreinforced brick masonry were obtained from cyclic load tests of masonry wall specimens. …
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Damping and flexural properties of prestressed concrete members subjected to reversed cyclic loading
… the problem of using prestressed concrete for earthquake resistant structures, and examines the "equivalent viscous damping" approach to the measurement of structural damping. Part two describes the reversed cyclic testing of prestressed concrete members: end moments were applied to the members …
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ANALYSIS AND MODELING OF NONSTATIONARY GROUND MOTION COHERENCY
… do not consider the nonstationary character of ground motions. Accurate understanding for nonstationary coherency can motivate accurate modeling and simulation of spatially incoherent ground motions. In this work, a nonstationary ground motion coherency analysis and modeling are performed using …
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Nonlinear earthquake analysis of wall pier bridges
… response of complex bridge structures to strong earthquake ground motion requires the use of sophisticated nonlinear dynamic analysis computer programs not generally available to the bridge design engineer. The analytical tools that have been developed are generally applicable to bridges whose …
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Active tectonics and earthquake hazards in continental mountain ranges and foreland basins
… active mountain belts are exposed to significant earthquake hazard, since the range-bounding faults produce large earthquakes, and the underlying geological structure amplifies the resulting ground shaking. The aim of this dissertation is to investigate the regional-scale controls on earthquake …
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Dynamic Analysis Of Turbine-generator-foundation Systems
… seismic excitation is represented as the control motion on the ground surface, which is generated as an artificial earthquake. Both inertial and kinematic interactions are included.;Several computer programs, including a general purpose finite element program, a program to formulate soil stiffness …
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Bayesian Methods for Intensity Measure and Ground Motion Selection in Performance-Based Earthquake Engineering
The objective of quantitative Performance-Based Earthquake Engineering (PBEE) is designing buildings that meet the specified performance objectives when subjected to an earthquake. One challenge to completely relying upon a PBEE approach in design practice is the open-ended nature of characterizing …
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On the Seismic Performance of Skewed Special Moment Frame Reduced Beam Section Connections
… details developed following the Northridge earthquake to limit brittle fractures within connection welds. Current American Institute of Steel Construction (ASIC) provisions (i.e. AISC 341-16) provide prequalified SMF RBS connection details (including welding requirements); however, all …
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Seismic studies of 3-D elastic and anelastic structure of crust and upper mantle in Western China
… of the region and provide constraint for earthquake hazards. There are two important properties of Earth’s media: elastic and anelastic. Elastic properties, mainly seismic velocities, are studied by travel times of seismic waves. Anelastic properties are generally studied by attenuation of …
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Uncertainty Quantification in Earth System Models Using Polynomial Chaos Expansions
… for Hurricane Earl (2010) modeling; and the earthquake seismology model for Bayesian inference of fault plane configurations. </p><p>In the OGCM study, we aim at analyzing the combined impact of uncertainties in initial conditions and wind forcing fields on ocean circulation using PC …
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New Model And Simulation Algorithm Of Nonstationary Non-gaussian Ground Motions Based On S-transform
The seismic ground motions are nonstationary stochastic processes and vary from site to site. The time histories of synthetic ground motions are used for nonlinear inelastic structural dynamic analysis since the historical records are limit or unavailable for a particular scenario seismic event. …
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Seismic reliability of 3D isolated bridges accounting for spatial variability of earthquake ground motions
L'abstract è presente nell'allegato / the abstract is in the attachment
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Improving Reno Earthquake Hazard Assessment Through a Ground-Motion Model Analysis and Paleoseismic Study
… results of two complimentary methods to assess earthquake hazards around Reno, Nevada. First, we evaluate the performance of the four NGA-West2 (2014) Active Crustal models, which are trained on a global dataset of ground motion recordings, in the context of the Reno area. We compare the …