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Author : Karthik Ram Narayanan
Publisher :
ISBN 13 :
Total Pages : 304 pages
Book Rating : 4.:/5 (6 download)
Download or read book Modeling the Seismic Response of Stratified Soil written by Karthik Ram Narayanan and published by . This book was released on 1999 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Philip Robins
Publisher :
ISBN 13 :
Total Pages : 330 pages
Book Rating : 4.:/5 (62 download)
Download or read book Centrifuge Modeling of the Seismic Performance of Stratified Soils written by Philip Robins and published by . This book was released on 2000 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : José Ramón Arroyo Caraballo
Publisher :
ISBN 13 :
Total Pages : 296 pages
Book Rating : 4.:/5 (428 download)
Download or read book Nonlinear Seismic Response of Stratified Soil Deposits Using Higher Order Frequency Response Functions in the Frequency Domain written by José Ramón Arroyo Caraballo and published by . This book was released on 1999 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Rui Wang
Publisher : Springer
ISBN 13 : 3662496631
Total Pages : 131 pages
Book Rating : 4.6/5 (624 download)
Download or read book Single Piles in Liquefiable Ground written by Rui Wang and published by Springer. This book was released on 2016-03-17 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis focuses on the seismic response of piles in liquefiable ground. It describes the design of a three-dimensional, unified plasticity model for large post-liquefaction shear deformation of sand, formulated and implemented for parallel computing. It also presents a three-dimensional, dynamic finite element analysis method for piles in liquefiable ground, developed on the basis of this model,. Employing a combination of case analysis, centrifuge shaking table experiments and numerical simulations using the proposed methods, it demonstrates the seismic response patterns of single piles in liquefiable ground. These include basic force-resistance mode, kinematic and inertial interaction coupling mechanism and major influence factors. It also discusses a beam on the nonlinear Winkler foundation (BNWF) solution and a modified neutral plane solution developed and validated using centrifuge experiments for piles in consolidating and reconsolidating ground. Lastly, it studies axial pile force and settlement during post-earthquake reconsolidation, showing pile axial force to be irrelevant in the reconsolidation process, while settlement is process dependent.
Author : Nozomu Yoshida
Publisher : Springer
ISBN 13 : 940179460X
Total Pages : 370 pages
Book Rating : 4.4/5 (17 download)
Download or read book Seismic Ground Response Analysis written by Nozomu Yoshida and published by Springer. This book was released on 2014-11-17 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents state-of-the-art information on seismic ground response analysis, and is not only very valuable and useful for practitioners but also for researchers. The topics covered are related to the stages of analysis: 1. Input parameter selection, by reviewing the in-situ and laboratory tests used to determine dynamic soil properties as well as the methods to compile and model the dynamic soil properties from literature;2. Input ground motion; 3. Theoretical background on the equations of motion and methods for solving them; 4. The mechanism of damping and how this is modeled in the equations of motions; 5. Detailed analysis and discussion of results of selected case studies which provide valuable information on the problem of seismic ground response analysis from both a theoretical and practical point of view.
Author : Sangwoo Kim
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (14 download)
Download or read book Stochastic Modeling for the Seismic Response of Inhomogeneous Soil Media written by Sangwoo Kim and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A method is developed for generating synthetic seismic ground motion records. The records are solutions of stochastic wave equations with deterministic inputs, which correspond to specified fault ruptures, and random coefficients, which capture spatial random fluctuations of soil properties. Matrix-valued homogeneous non-Gaussian random fields are constructed to characterize soil properties. The numerical solution of stochastic wave equations involves two steps. First, the unbounded domain of definition is replaced with a bounded subdomain with appropriate boundary conditions to limit wave reflection. Second, the resulting spatial domain is discretized. The solution of the wave equation is approximated by a state vector whose components are the values of this solution at the nodes of the spatial discretization. The state vector satisfies a linear ordinary differential equation with random coefficients, which is solved by random vibration method and Monte Carlo simulation. Statistical results of seismic ground motions are presented for various types of soil layers.
Author : Shannon & Wilson
Publisher :
ISBN 13 :
Total Pages : 398 pages
Book Rating : 4.E/5 ( download)
Download or read book Soil Behavior Under Earthquake Loading Conditions written by Shannon & Wilson and published by . This book was released on 1972 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : C. Zhang
Publisher : Elsevier
ISBN 13 : 0080530583
Total Pages : 335 pages
Book Rating : 4.0/5 (85 download)
Download or read book Dynamic Soil-Structure Interaction written by C. Zhang and published by Elsevier. This book was released on 1998-09-22 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamic Soil-structure interaction is one of the major topics in earthquake engineering and soil dynamics since it is closely related to the safety evaluation of many important engineering projects, such as nuclear power plants, to resist earthquakes. In dealing with the analysis of dynamic soil-structure interactions, one of the most difficult tasks is the modeling of unbounded media. To solve this problem, many numerical methods and techniques have been developed. This book summarizes the most recent developments and applications in the field of dynamic soil-structure interaction, both in China and Switzerland. An excellent book for scientists and engineers in civil engineering, structural engineering, geotechnical engineering and earthquake engineering.
Author : Brian Carlton
Publisher :
ISBN 13 :
Total Pages : 845 pages
Book Rating : 4.:/5 (94 download)
Download or read book An Improved Description of the Seismic Response of Sites with High Plasticity Soils, Organic Clays, and Deep Soft Soil Deposits written by Brian Carlton and published by . This book was released on 2014 with total page 845 pages. Available in PDF, EPUB and Kindle. Book excerpt: Near surface soils can greatly influence the amplitude, duration, and frequency content of ground motions. The amount of their influence depends on many factors, such as the geometry and engineering properties of the soils and underlying bedrock, as well as the earthquake source mechanism and travel path. Building codes such as the 2012 International Building Code (IBC) define six site categories for seismic design of structures, which are based on the sites defined by the National Earthquake Hazards Reduction Program (NEHRP). Site categories A, B, C, D, and E are defined by the time averaged shear wave velocity over the top 30 meters of the soil deposit. Site category F is defined as sites that include liquefiable or sensitive soils, as well as sites with more than 3 meters (10 ft) of peat or highly organic clays, more than 7.5 meters (25 ft) of soil with PI> 75, and more than 37 meters (120 ft) of soft to medium stiff clays. The IBC specifies simplified procedures to calculate design spectra for NEHRP sites A through E, and requires a site specific investigation for NEHRP F sites. However, established procedures for performing the required site specific investigations for NEHRP F sites are limited. The objective of this research is to develop a simplified procedure to estimate design spectra for non-liquefiable NEHRP F sites, specifically sites with organic soils, highly plastic soils, and deep soft soil deposits. The results from this research will directly affect US practice by developing much needed guidelines in this area. There is little empirical data on the seismic response of non-liquefiable NEHRP F sites. As a result, this study focused on generating data from site response analyses. To capture the variability of ground motions, this study selected five base case scenarios according to tectonic environments and representative cases encountered in common US practice. Suites of ground motions for each scenario were created by collecting ground motions from online databases. Some of the ground motions were scaled and others were spectrally matched to their respective target response spectra. Fifteen different NEHRP E and F sites were created for the site response analyses. Seven of the sites are based on actual sites from the San Francisco Bay Area, New York City, Ottawa, Canada, Guayaquil, Ecuador, and Hokkaido, Japan. The other eight sites are variations of the seven base case sites. This study conducted a total of 14,541 site response analyses using a well documented site response analysis program. This study then developed a simplified model to estimate response spectra for non-liquefiable NEHRP F sites. The simplified model was developed in two stages. In the first stage, the results for each site were regressed separately against the ground motion intensity to estimate the effect of the ground motion scenario. In the second stage, the site specific coefficients calculated from the first stage were regressed against site properties to determine their site dependence. These two parts were then combined to form the final model. The simplified model was validated against a separate database than the one used to develop it. This validation database consisted of 24 effective stress nonlinear site response analyses for three sites and eight ground motion scenarios. The simplified model developed in this study does not replace a site response analysis, but rather augments it. It is hoped that the results of this dissertation will help practicing engineers gain a better understanding of their site before conducting site response analyses.
Author : S. Syngellakis
Publisher : WIT Press
ISBN 13 : 1845649788
Total Pages : 265 pages
Book Rating : 4.8/5 (456 download)
Download or read book Earthquake-Soil Interaction written by S. Syngellakis and published by WIT Press. This book was released on 2014-09-29 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprises a selection of articles on interactions between earthquakes and the soil in which they propagate. The book is concerned with soil composition and geomechanical features, which affect earthquake propagation and intensity; it also addresses detrimental effects of seismic shaking on soil properties and stability. Modelling is applied to investigate the effects of cracks and various types of soil damping on seismic waves. Elastic, poroelastic, elasto-plastic, constitutive models are adopted in conjunction with rigorous mathematical techniques or approximate methods such as boundary elements or finite differences. A substantial part of this volume is dedicated to soil liquefaction, an important consequent of seismic shaking that results in substantial loss of soil strength and stiffness. Criteria are proposed for assessing the liquefaction potential of a site. Data collected from soil samples, either in the laboratory or in-situ, are analysed to provide values for the critical parameters on which liquefaction depends. The occurrence of landslides is addressed by assessing slope stability through a systematic geophysical and geotechnical characterisation of the soil mass followed by finite element modelling. The bearing capacity of the soil is directly obtained by laboratory testing of soil samples, as well as from reliable empirical relations generated by combining such test data with in-situ measurements of soil dynamic properties.
Author : Mohammad H. T. Rayhani
Publisher :
ISBN 13 :
Total Pages : 368 pages
Book Rating : 4.:/5 (16 download)
Download or read book Centrifuge Modeling of Seismic Response and Soil-structure Interaction written by Mohammad H. T. Rayhani and published by . This book was released on 2007 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael D. Knoll
Publisher :
ISBN 13 :
Total Pages : 1550 pages
Book Rating : 4.:/5 (123 download)
Download or read book Modeling the Seismic Response of Complex Near-surface Layers written by Michael D. Knoll and published by . This book was released on 1988 with total page 1550 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yefei Ren
Publisher : Frontiers Media SA
ISBN 13 : 2832540090
Total Pages : 297 pages
Book Rating : 4.8/5 (325 download)
Download or read book Measuring, Modeling and Predicting the Seismic Site Effect written by Yefei Ren and published by Frontiers Media SA. This book was released on 2024-01-25 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: As recognized universally by both seismology and earthquake engineering communities, the amplitude and frequency content of ground motions are influenced by local site effects, including the effects of near-surface geologic materials, surface topographic and basin effects, and so on. Strong linkage between seismic site effect and earthquake damage has been commonly demonstrated from many past earthquakes. Therefore, quantitative and reliable evaluation of the seismic site effect is one of the crucial aspects in seismic hazard assessment and risk mitigation. With the significant advancement of modern seismic monitoring networks and arrays, huge amounts of high-quality seismic records are now being accumulated. This encourages us to measure the site responses and its associated uncertainty for selected seismic stations by some record-dependent approaches, such as horizontal-to-vertical spectral ratio (HVSR) measurements, generalized spectral inversion (GIT) methods, etc. Machine learning techniques also show significant promise in characterization of the near-surface geologic properties and prediction of site response. These data-driven approaches help us to better understand the physics of spatial and temporal variabilities of ground motions. Due to more and more site-specific data being captured, invoking non-ergodic assumptions in seismic response analysis has recently been a topic of great interest in the community. For specific site response analysis, numerical simulations are carried out to model the dynamic process of seismic waves propagating and scattering in the subsurface strata. With development of modeling capacity, great efforts have been taken to evaluate quantitatively the complex 2D and 3D effects on seismic site response.
Author :
Publisher : UNAM
ISBN 13 : 9789703213948
Total Pages : 68 pages
Book Rating : 4.2/5 (139 download)
Download or read book A Semi-empiral Model for the Influence of Soft Soil Conditions on Realistic Acceleration Time Histories written by and published by UNAM. This book was released on with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Alexander Tyapin
Publisher : ASV Construction
ISBN 13 : 919822235X
Total Pages : 200 pages
Book Rating : 4.1/5 (982 download)
Download or read book Soil-structure interaction in seismic analysis written by Alexander Tyapin and published by ASV Construction. This book was released on 2019-06-11 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil-structure interaction (SSI) is an important phenomenon in the seismic response analysis. As seismologists describe seismic excitation in terms of the seismic motion of certain control point at the free surface of the initial site, the question is whether the same point of the structure (after structure appears) will have the same seismic response motion in case of the same seismic event. If yes, then seismic motion from seismologists is directly applied to the base of the structure (it is called “fixed-base analysis”), and they say that “no SSI occurs”’ (though literally speaking soil is forcing structure to move, so interaction is always present). This is a conventional approach in the field of civil engineering. However, if heavy and rigid structure (sometimes embedded) is erected on medium or soft soil site, this structure changes the seismic response motion of the soil as compared to the initial free-field picture. Such a situation is typical for Nuclear Power Plants (NPPs), deeply embedded structures, etc. The book describes different approaches to SSI analysis and different SSI effects. Special attention is paid to the Combined Asymptotic Method (CAM) developed by the author and used for the design of NPPs in seismic regions. Nowadays, some civil structures have parameters comparable to those of NPPs (e.g., masses and embedment), so these approaches become useful for the civil structural engineers as well.
Author : Irshad Ahmad
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783659646836
Total Pages : 220 pages
Book Rating : 4.6/5 (468 download)
Download or read book Neural Network Modeling of Seismic Events and Soil-Pile Interaction written by Irshad Ahmad and published by LAP Lambert Academic Publishing. This book was released on 2014-12-23 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work aims at predicting the seismic response of soil and pile using artificial neural network (ANN) as a tool of function approximation.The seismic response of soil is a function of characteristics of earthquake source, the distance traversed by seismic waves through the earth body, and the local site geology below the ground surface. In addition, the presence of pile in soil alters the seismic waves and the pile in turn is stressed. Two important phenomena are modeled in this research: (i) the prediction of seismic response of ground surface in terms of peak ground acceleration (PGA), peak ground velocity(PGV), and peak ground displacement(PGD), and (ii) the kinematic response of piles which includes pile bending moments and the foundation input motion to the superstructure.
Author : Aspasia Zerva
Publisher : CRC Press
ISBN 13 : 1420009915
Total Pages : 488 pages
Book Rating : 4.4/5 (2 download)
Download or read book Spatial Variation of Seismic Ground Motions written by Aspasia Zerva and published by CRC Press. This book was released on 2016-04-19 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: The spatial variation of seismic ground motions denotes the differences in the seismic time histories at various locations on the ground surface. This text focuses on the spatial variability of the motions that is caused by the propagation of the waveforms from the earthquake source through the earth strata to the ground surface, and it brings toge
