Model Tests and Numerical Simulations of Liquefaction and Lateral Spreading
This open access book presents work collected through the Liquefaction Experiments and Analysis Projects (LEAP) in 2017. It addresses the repeatability, variability, and sensitivity of lateral spreading observed in twenty-four centrifuge model tests on mildly sloping liquefiable sand. The centrifuge tests were conducted at nine different centrifuge facilities around the world. For the first time, a sufficient number of experiments were conducted to enable assessment of variability of centrifuge test results. The experimental data provided a unique basis for assessing the capabilities of twelve different simulation platforms for numerical simulation of soil liquefaction. The results of the experiments and the numerical simulations are presented and discussed in papers submitted by the project participants. The work presented in this book was followed by LEAP-Asia that included assessment of a generalized scaling law and culminated in a workshop in Osaka, Japan in March 2019. LEAP-2020, ongoing at the time of printing, is addressing the validation of soil-structure interaction analyses of retaining walls involving a liquefiable soil. A workshop is planned at RPI, USA in 2020. This open access book presents work collected through the Liquefaction Experiments and Analysis Projects (LEAP) in 2017. It addresses the repeatability, variability, and sensitivity of lateral spreading observed in twenty-four centrifuge model tests on mildly sloping liquefiable sand. The centrifuge tests were conducted at nine different centrifuge facilities around the world. For the first time, a sufficient number of experiments were conducted to enable assessment of variability of centrifuge test results. The experimental data provided a unique basis for assessing the capabilities of twelve different simulation platforms for numerical simulation of soil liquefaction. The results of the experiments and the numerical simulations are presented and discussed in papers submitted by the project participants. The work presented in this book was followed by LEAP-Asia that included assessment of a generalized scaling law and culminated in a workshop in Osaka, Japan in March 2019. LEAP-2020, ongoing at the time of printing, is addressing the validation of soil-structure interaction analyses of retaining walls involving a liquefiable soil. A workshop is planned at RPI, USA in 2020.
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Description of Model Tests and Numerical Simulations of Liquefaction and Lateral Spreading
This open access book presents work collected through the Liquefaction Experiments and Analysis Projects (LEAP) in 2017. It addresses the repeatability, variability, and sensitivity of lateral spread
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Publication
Publish Date
2020 Jun 24
ISBN
978-3-030-22818-7
About the authors
Education Ph.D. Soil Mechanics, Cambridge University, UK, 1983 M.Phil. Soil Mechanics, Cambridge University, UK, 1979 M.S. Geotechnical Engineering, University of California, Davis, CA, 1978 B.S. Civil Engineering, University of California, Davis, 1977 Academic Appointments 1995-present: Professor, Department of Civil and Environmental Engineering 1996-2009: Director, Center for Geotechnical Modeling
Bruce L. Kutter (Editor)
Professor Majid Manzari's Earthquake Engineering and Structures Lab conducts advanced experimental and computational research in earthquake engineering, fatigue and fracture of engineering materials, geomechanics, and geotechnical engineering. Current projects include: multiscale meshfree modeling of geostructures containing liquefiable soils, seismic response of nuclear fuel assemblies, fatigue of aluminum weldments, and development of efficient and robust techniques for implementation of elastoplastic models of engineering materials. Education B.S., Tehran University, 1984 M.S., Tehran University, 1986 Ph.D., University of California, Davis, 1994
Majid T. Manzari (Editor)
Dr. Zeghal research interests include: Computational Soil Micro-Mechanics, Geotechnical-System Identification, Seismic Response Monitoring, and Information Technology Applications in Geomechnics. He is active with the Center for Network for Earthquake Engineering Simulation (CEES), Scientific Computation Research Center (SCOREC) and the Inverse Problems Center (IPRPI). Failure of geosystems due to natural or man-made hazards such as hurricanes, floods, earthquakes, or terrorist attacks may have monumental repercussions, sometimes with dramatic and unanticipated consequences on human life and the country’s economy. Dr. Zeghal’s research focuses on three areas that are central to the national effort to reduce the impact of these hazards: (1) multiscale modeling of geosystems, (2) model validation and calibration, and (3) development of improved optimal design tools. The methodology of evaluating and predicting the performance of geosystems is undergoing a significant paradigm shift. Computational simulations are destined to become more prominent than empirical approaches and will ultimately become the main tool for analysis and design of civil systems. A hierarchy of adaptive and cost-effective computational models capable of accurately predicting the multiscale and multiphysics response of geosystems is being developed. This hierarchy enables a seamless handling of the initiation and evolution of the various response and failure mechanisms of soils under extreme loading conditions. The hierarchical models range from homogenized continuum to discontinuous coarse-particle formulations. A class of innovative system identification and inverse problem tools are being developed to calibrate these models using experimental data ranging from soil sample and centrifuge tests to full-scale and field tests. This new generation of computational procedures is being translated to practice through careful interactions with practitioners (from industry and government laboratories) and the introduction of changes in the educational curricula of our students. Education Ph.D., Princeton University Civil Engineering M.A., Princeton University Civil Engineering
Mourad Zeghal (Editor)
Tags
Liquefaction Experiments and Analysis ProjectsSoil liquefactioncentrifuge experimental resultsSoil ModelEarthquake ExcitationGround FailureNumerical SimulationUniversity of California at DavisRensselaerPolytechnic InstituteCambridge University (UK)Kyoto University (Japan)NCU (Taiwan)Zhejiang University (China)IFSTTAR (France)KAIST and KWater (South Korea)open access
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