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Evaluation Of Shear Wave Velocity Based Soil Liquefaction Resistance Criteria By Centrifuge Tests
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Book Synopsis Evaluation of Shear Wave Velocity Based Soil Liquefaction Resistance Criteria by Centrifuge Tests by : Lei Fu
Download or read book Evaluation of Shear Wave Velocity Based Soil Liquefaction Resistance Criteria by Centrifuge Tests written by Lei Fu and published by . This book was released on 2009 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new technique has been developed for the evaluation of shear wave velocity based soil liquefaction resistance criteria by centrifuge tests. It involves the application of bender elements in centrifuge tests to measure shear wave velocity while investigating the liquefaction features of a saturated model. A total of six models were tested. Shear wave velocity and shear modulus profiles of the models were obtained. Currently used case history based soil liquefaction criteria were examined. The results show that there is an obvious difference in soil liquefaction resistance before and after the application of an earthquake. It is concluded that currently used case history based soil liquefaction resistance criteria developed from the mixed parameters measured before and after earthquakes need to be modified to take into account this difference.
Book Synopsis Draft Guidelines for Evaluating Liquefaction Resistance Using Shear Wave Velocity Measurements and Simplified Procedures by : Ronald D. Andrus
Download or read book Draft Guidelines for Evaluating Liquefaction Resistance Using Shear Wave Velocity Measurements and Simplified Procedures written by Ronald D. Andrus and published by . This book was released on 1999 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents draft guidelines for evaluating liquefaction resistance using shear wave velocity measurements. These guidelines outline the development of a recommended procedure, which follows the general format of the penetration-based simplified procedure. The proposed procedure has been validated through case history data from more than 20 earthquakes and 70 measurement sites in soils ranging from clean fine sand to sandy gravel with cobbles to profiles including silty clay layers.
Book Synopsis Verification of Shear Wave Velocity Based Liquefaction Criteria Using Centrifuge Model by : Gang Liu (Ph. D.)
Download or read book Verification of Shear Wave Velocity Based Liquefaction Criteria Using Centrifuge Model written by Gang Liu (Ph. D.) and published by . This book was released on 2009 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guidelines for Evaluating Liquefaction Resistance Using Shear Wave Velocity Measurement and Simplified Procedures by :
Download or read book Guidelines for Evaluating Liquefaction Resistance Using Shear Wave Velocity Measurement and Simplified Procedures written by and published by . This book was released on 2003 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Academies of Sciences, Engineering, and Medicine Publisher : ISBN 13 :9780309440271 Total Pages :350 pages Book Rating :4.4/5 (42 download)
Book Synopsis State of the Art and Practice in the Assessment of Earthquake-Induced Soil Liquefaction and Its Consequences by : National Academies of Sciences, Engineering, and Medicine
Download or read book State of the Art and Practice in the Assessment of Earthquake-Induced Soil Liquefaction and Its Consequences written by National Academies of Sciences, Engineering, and Medicine and published by . This book was released on 2019-01-30 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthquake-induced soil liquefaction (liquefaction) is a leading cause of earthquake damage worldwide. Liquefaction is often described in the literature as the phenomena of seismic generation of excess porewater pressures and consequent softening of granular soils. Many regions in the United States have been witness to liquefaction and its consequences, not just those in the west that people associate with earthquake hazards. Past damage and destruction caused by liquefaction underline the importance of accurate assessments of where liquefaction is likely and of what the consequences of liquefaction may be. Such assessments are needed to protect life and safety and to mitigate economic, environmental, and societal impacts of liquefaction in a cost-effective manner. Assessment methods exist, but methods to assess the potential for liquefaction triggering are more mature than are those to predict liquefaction consequences, and the earthquake engineering community wrestles with the differences among the various assessment methods for both liquefaction triggering and consequences. State of the Art and Practice in the Assessment of Earthquake-Induced Soil Liquefaction and Its Consequences evaluates these various methods, focusing on those developed within the past 20 years, and recommends strategies to minimize uncertainties in the short term and to develop improved methods to assess liquefaction and its consequences in the long term. This report represents a first attempt within the geotechnical earthquake engineering community to consider, in such a manner, the various methods to assess liquefaction consequences.
Book Synopsis Study of in Situ Testing for Evaluation of Liquefaction Resistance by : Jeffrey A. Farrar
Download or read book Study of in Situ Testing for Evaluation of Liquefaction Resistance written by Jeffrey A. Farrar and published by . This book was released on 1990 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :NCEER Workshop on Evaluation of Liquefaction Resistance of Soils Publisher : ISBN 13 : Total Pages :276 pages Book Rating :4.:/5 (439 download)
Book Synopsis Proceedings of the NCCER Workshop on Evaluation of Liquefaction Resistance of Soils by : NCEER Workshop on Evaluation of Liquefaction Resistance of Soils
Download or read book Proceedings of the NCCER Workshop on Evaluation of Liquefaction Resistance of Soils written by NCEER Workshop on Evaluation of Liquefaction Resistance of Soils and published by . This book was released on 1997 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Liquefaction Evaluation Procedure Based on Shear Wave Velocity by : R. D. Andrus
Download or read book Liquefaction Evaluation Procedure Based on Shear Wave Velocity written by R. D. Andrus and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions by : Francesco Silvestri
Download or read book Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions written by Francesco Silvestri and published by CRC Press. This book was released on 2019-07-19 with total page 8083 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions contains invited, keynote and theme lectures and regular papers presented at the 7th International Conference on Earthquake Geotechnical Engineering (Rome, Italy, 17-20 June 2019. The contributions deal with recent developments and advancements as well as case histories, field monitoring, experimental characterization, physical and analytical modelling, and applications related to the variety of environmental phenomena induced by earthquakes in soils and their effects on engineered systems interacting with them. The book is divided in the sections below: Invited papers Keynote papers Theme lectures Special Session on Large Scale Testing Special Session on Liquefact Projects Special Session on Lessons learned from recent earthquakes Special Session on the Central Italy earthquake Regular papers Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions provides a significant up-to-date collection of recent experiences and developments, and aims at engineers, geologists and seismologists, consultants, public and private contractors, local national and international authorities, and to all those involved in research and practice related to Earthquake Geotechnical Engineering.
Book Synopsis Soil Liquefaction During Earthquakes by : I. M. Idriss
Download or read book Soil Liquefaction During Earthquakes written by I. M. Idriss and published by . This book was released on 2008 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Liquefaction Resistance of Granular Mixes Based on Contact Density and Energy Considerations by :
Download or read book Liquefaction Resistance of Granular Mixes Based on Contact Density and Energy Considerations written by and published by . This book was released on 2006 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil liquefaction is a process involving gradual loss of granular contact-stress in cohesionless non-plastic soils, leading to the loss of strength of the soil structure during undrained loading. During this process, energy is continuously lost mainly along frictional contacts. This thesis focuses on (i) examining the role of intergrain contact density and confining stress on steady state strength and cyclic resistance of clean sands and non-plastic silty soils, (ii) formulating an expression for frictional energy loss in soils, and (iii) development of a simple liquefaction evaluation approach based on energy considerations. Intergrain contact density indices in terms of global void ratio and silt content have been proposed. An extensive experimental study was conducted involving undrained monotonic and cyclic triaxial tests on three different sands and their sand-silt mixes to acquire valuable data for evaluations. The applicability of proposed contact indices to characterize steady state strength and cyclic resistance of granular mixes is analyzed experimentally. The results show that at the same initial confinement, the steady state strength of sands and silty soils is a function of contact density. The steady state strength of silty soils depends on both contact density and initial effective confinement. For all the tested soils, cyclic resistance, which is measured in terms of both number of equal stress cycles required to cause liquefaction (N L) and dissipated energy up to liquefaction (E L) increases log-linearly with intergrain contact density. E L depends on initial confinement, and increases linearly with increasing initial effective stress. Theoretical expressions are developed for frictional energy loss (W) during cyclic loading. The mobilization of contact friction and the occurrence of slip along the contact surfaces in a soil medium are studied and incorporated into the theoretical development. The cyclic triaxial test data are used to evaluate the developed expression for W. For each cyclic test, the dissipated energy (E) is calculated and compared with corresponding computed W.E and W shows 1:1 relationship ensuring the validity of the expression. Based on above developments and understanding, a numerical simulation model using finite difference method is developed to simulate energy dissipation, pore pressure generation, pore pressure dissipation, and densification in a given soil profile for a given earthquake motion. Utilizing the above simulation model, a simple energy based liquefaction evaluation procedure is developed. The procedure is verified using a centrifuge model test data.
Book Synopsis Preliminary Guidelines for Liquefaction Assessment Using Shear Wave Velocity by : R. D. Andrus
Download or read book Preliminary Guidelines for Liquefaction Assessment Using Shear Wave Velocity written by R. D. Andrus and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Soil Dynamics and Earthquake Geotechnical Engineering by : Boominathan Adimoolam
Download or read book Soil Dynamics and Earthquake Geotechnical Engineering written by Boominathan Adimoolam and published by Springer. This book was released on 2018-06-09 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers selected proceedings of the annual conference of the Indian Geotechnical Society, and covers various aspects of soil dynamics and earthquake geotechnical engineering. The book includes a wide range of studies on seismic response of dams, foundation-soil systems, natural and man-made slopes, reinforced-earth walls, base isolation systems and so on, especially focusing on the soil dynamics and case studies from the Indian subcontinent. The book also includes chapters addressing related issues such as landslide risk assessments, liquefaction mitigation, dynamic analysis of mechanized tunneling, and advanced seismic soil-structure-interaction analysis. Given its breadth of coverage, the book offers a useful guide for researchers and practicing civil engineers alike.
Book Synopsis Physics and Mechanics of Soil Liquefaction by : PoulV. Lade
Download or read book Physics and Mechanics of Soil Liquefaction written by PoulV. Lade and published by Routledge. This book was released on 2018-04-27 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: The workshop aims to provide a fundamental understanding of the liquefaction process, necessary to the enhancement of liquefaction prediction. The contributions are divided into eight sections, which include: factors affecting liquefaction susceptibility and field studies of liquefaction.
Book Synopsis Geotechnical Earthquake Engineering by : Steven Lawrence Kramer
Download or read book Geotechnical Earthquake Engineering written by Steven Lawrence Kramer and published by CRC Press. This book was released on 2024-10 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This fully-updated new edition provides an introduction to geotechnical earthquake engineering to first-time readers (typically first-year graduate students) with a level of detail that will be useful to more advanced students, as well as researchers and practitioners. It covers the topic of geotechnical earthquake engineering beginning with an introduction to seismology and earthquake ground motions. It also includes hazard analysis and performance-based earthquake engineering design and dynamic soil properties. These topics are followed by site response and its analysis and soil-structure interaction"--
Book Synopsis Probabilistic Evaluation of Soil Liquefaction Resistance by : Steven Kim Noble
Download or read book Probabilistic Evaluation of Soil Liquefaction Resistance written by Steven Kim Noble and published by . This book was released on 1998 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An In Situ Test Method for Evaluating the Coupled Pore Pressure Generation and Nonlinear Shear Modulus Behavior of Liquefiable Soils by : Brady R. Cox
Download or read book An In Situ Test Method for Evaluating the Coupled Pore Pressure Generation and Nonlinear Shear Modulus Behavior of Liquefiable Soils written by Brady R. Cox and published by . This book was released on 2008 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: An in situ test method for evaluating the coupled response between excess pore water pressure generation and nonlinear shear modulus behavior has been developed. This technique is an active, strain-based method that may be used to directly evaluate the liquefaction resistance of soils in place. The test is based on the premise of dynamically loading a native soil deposit in a manner similar to an earthquake while simultaneously measuring its response with push-in sensors. Dynamic loading is performed via a large, buggy-mounted hydraulic shaker (vibroseis) that is used to generate vertically propagating (downward), horizontally polarized shear waves (Svh-waves) of varying amplitude within an instrumented portion of a liquefiable soil deposit. The newly-developed, push-in sensors consist of a three-component (3D) MEMS accelerometer and a miniature pore water pressure transducer. The new test method has been used to conduct field experiments in liquefiable soil deposits approximately 3 to 4 m below the ground surface. These tests were successful at measuring: (1) excess pore water pressure generation, and (2) nonlinear shear modulus behavior in native silty-sand deposits as a function of induced cyclic shear strain and number of loading cycles. These accomplishments represent a large step forward in the ability to accurately evaluate the susceptibility of a soil deposit to earthquake-induced liquefaction. While typical test results are presented herein, this paper primarily focuses on the equipment, field testing practices, and data analysis procedures for the new test method.
