Model Tests And Numerical Simulations Of Liquefaction And Lateral Spreading Ii

Author : Tetsuo Tobita
Publisher : Springer Nature
ISBN 13 : 3031488210
Total Pages : 448 pages
Book Rating : 4.14/5 ( download)

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Download or read book Model Tests and Numerical Simulations of Liquefaction and Lateral Spreading II written by Tetsuo Tobita and published by Springer Nature. This book was released on with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Bruce L. Kutter
Publisher : Springer Nature
ISBN 13 : 3030228185
Total Pages : 660 pages
Book Rating : 4.87/5 ( download)

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Download or read book Model Tests and Numerical Simulations of Liquefaction and Lateral Spreading written by Bruce L. Kutter and published by Springer Nature. This book was released on 2019-01-01 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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. .

Author : Mourad Zeghal
Publisher :
ISBN 13 : 9781013275005
Total Pages : 654 pages
Book Rating : 4.04/5 ( download)

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Download or read book Model Tests and Numerical Simulations of Liquefaction and Lateral Spreading written by Mourad Zeghal and published by . This book was released on 2020-10-09 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.

Author : Trevor James Carey
Publisher :
ISBN 13 : 9781658412421
Total Pages : pages
Book Rating : 4.27/5 ( download)

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Download or read book Experimental Modeling and Numerical Simulation of Lateral Spreading for Validation of Constitutive Models written by Trevor James Carey and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerical modeling is often relied on as the most advanced approach for predicting the effects of liquefaction for complex geosystems. While numerical methods are often used to model seismic performance, little is known about how accurately constitutive models capture the physics behind liquefaction. The Liquefaction Experiments and Analysis Projects (LEAP) is an international effort among numerical and physical modelers to validate numerical models used to predict the effects of liquefaction. LEAP is conducted over a series of phases, or projects, each addressing a specific component of the overall goal of validation. The research in this dissertation presents components of LEAP, considering both experimental and numerical modeling of liquefaction. The overall goals are to: 1) provide high quality experimental data for validation of numerical constitutive models and 2) demonstrate the behavior and sensitivity of commonly used numerical liquefaction models. The goal of the first major US phase of LEAP, LEAP-GWU-2015, was to repeat the same centrifuge experiment at different research facilities, to serve as a single point for validation. The experiment consisted of a submerged slope of uniform sand. The centrifuge experiment performed at UC Davis as a part of the LEAP-GWU-2015 phase is discussed, including the experiment results, novel testing procedures, modifications to the model container, and nonconformities with experiment specifications. Prior to the second major LEAP phase, new centrifuge testing equipment was developed to characterize the initial conditions of the experiment and model response during liquefaction. A low-cost cone penetrometer device was designed and distributed to the LEAP testing facilities for improved quality control. A linear regression is presented that uses measured cone tip stresses to correct reported initial densities from mass and volume measurements. A novel hardware configuration to measure liquefaction induced deformations of a submerged slope was developed. The new configuration records displacements using five GoPro cameras attached to a submerged clear acrylic window located above the slope, which acts as a glass-bottom boat to avoid distortion due to water surface waves. The highspeed videos recorded during shaking are converted to images and using GEO-PIV displacements time histories are calculated. Time series displacements measured with the new hardware configuration were shown to produce comparable results as hand measurements and sensor data. The second major LEAP phase, LEAP-UCD-2017, consisted of twenty-four centrifuge experiments performed at nine research facilitates using the same testing geometry as the LEAP-GWU-2015 exercise. The new strategy of the LEAP-UCD-2017 phase was to intentionally vary the key input variables of motion intensity and soil density to determine the sensitivity of residual displacements to these variables. The three centrifuge experiments performed at UC Davis for LEAP-UCD-2017 are presented, including the experiment results, new procedures to estimate model specimen density, and minor nonconformities with experimental specifications. Following the LEAP-UCD-2017 and LEAP-ASIA-2019 phases an experimental displacement response surface that relates soil density, input motion intensity, and slope displacement was developed using nonlinear regression analysis of the centrifuge test data. A numerical response surface was developed using the PDMY02 constitutive model using the OpenSees finite element framework. The PDMY02 model was calibrated for three relative densities using available cyclic element test laboratory data; after considerable effort the triggering curves (cyclic stress ratio vs number of cycles to liquefaction) for the PDMY02 model cross the triggering curves developed from laboratory data, but the shapes of the numerical curves do not match the laboratory curves. A finite element mesh of the LEAP-UCD-2017 centrifuge test geometry was developed and the displacement response surface for the PDMY02 model was developed by varying the intensity of the input motion for the three calibration densities. The resulting numerical response surface is shown to match the experimental surface well, despite the fact that the numerical liquefaction triggering curves are not a good fit with the laboratory liquefaction triggering curves. Together, the results presented in this dissertation contribute to our understanding of numerical model validation and help to reconcile the different inferences produced through numerical modeling and centrifuge experiments.

Author : National Academies of Sciences, Engineering, and Medicine
Publisher :
ISBN 13 : 9780309440271
Total Pages : 350 pages
Book Rating : 4.70/5 ( download)

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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.

Author : Pijush Samui
Publisher : Academic Press
ISBN 13 : 0128218525
Total Pages : 518 pages
Book Rating : 4.25/5 ( download)

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Download or read book Modeling in Geotechnical Engineering written by Pijush Samui and published by Academic Press. This book was released on 2020-12-01 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modeling in Geotechnical Engineering is a one stop reference for a range of computational models, the theory explaining how they work, and case studies describing how to apply them. Drawing on the expertise of contributors from a range of disciplines including geomechanics, optimization, and computational engineering, this book provides an interdisciplinary guide to this subject which is suitable for readers from a range of backgrounds. Before tackling the computational approaches, a theoretical understanding of the physical systems is provided that helps readers to fully grasp the significance of the numerical methods. The various models are presented in detail, and advice is provided on how to select the correct model for your application. Provides detailed descriptions of different computational modelling methods for geotechnical applications, including the finite element method, the finite difference method, and the boundary element method Gives readers the latest advice on the use of big data analytics and artificial intelligence in geotechnical engineering Includes case studies to help readers apply the methods described in their own work

Author : Xianhong Meng
Publisher :
ISBN 13 :
Total Pages : 474 pages
Book Rating : 4.24/5 ( download)

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Download or read book Estimation of Liquefaction-induced Lateral Spread from Numerical Modeling and Its Application written by Xianhong Meng and published by . This book was released on 2012 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Francesco Silvestri
Publisher : CRC Press
ISBN 13 : 0429632010
Total Pages : 8083 pages
Book Rating : 4.13/5 ( download)

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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.

Author : Lanmin Wang
Publisher : Springer Nature
ISBN 13 : 3031118987
Total Pages : 2417 pages
Book Rating : 4.82/5 ( download)

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Download or read book Proceedings of the 4th International Conference on Performance Based Design in Earthquake Geotechnical Engineering (Beijing 2022) written by Lanmin Wang and published by Springer Nature. This book was released on 2022-09-19 with total page 2417 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 4th International Conference on Performance-based Design in Earthquake Geotechnical Engineering (PBD-IV) is held in Beijing, China. The PBD-IV Conference is organized under the auspices of the International Society of Soil Mechanics and Geotechnical Engineering - Technical Committee TC203 on Earthquake Geotechnical Engineering and Associated Problems (ISSMGE-TC203). The PBD-I, PBD-II, and PBD-III events in Japan (2009), Italy (2012), and Canada (2017) respectively, were highly successful events for the international earthquake geotechnical engineering community. The PBD events have been excellent companions to the International Conference on Earthquake Geotechnical Engineering (ICEGE) series that TC203 has held in Japan (1995), Portugal (1999), USA (2004), Greece (2007), Chile (2011), New Zealand (2015), and Italy (2019). The goal of PBD-IV is to provide an open forum for delegates to interact with their international colleagues and advance performance-based design research and practices for earthquake geotechnical engineering.

Author : Marco Barla
Publisher : Springer Nature
ISBN 13 : 3030645142
Total Pages : 1029 pages
Book Rating : 4.44/5 ( download)

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Download or read book Challenges and Innovations in Geomechanics written by Marco Barla and published by Springer Nature. This book was released on 2021-01-14 with total page 1029 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers the latest advances, innovations, and applications in the field of computational geomechanics, as presented by international researchers and engineers at the 16th International Conference of the International Association for Computer Methods and Advances in Geomechanics (IACMAG 2020/21). Contributions include a wide range of topics in geomechanics such as: monitoring and remote sensing, multiphase modelling, reliability and risk analysis, surface structures, deep structures, dams and earth structures, coastal engineering, mining engineering, earthquake and dynamics, soil-atmosphere interaction, ice mechanics, landfills and waste disposal, gas and petroleum engineering, geothermal energy, offshore technology, energy geostructures, geomechanical numerical models and computational rail geotechnics.