Download or read book Numerical Modeling of Liquefaction and Comparison with Centrifuge Tests written by and published by . This book was released on 2004 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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. .
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.
Download or read book Numerical Models in Geomechanics written by G.N. Pande and published by CRC Press. This book was released on 2004-08-15 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reflecting the current research and advances made in the application of numerical methods in geotechnical engineering, this volume details proceedings of the Ninth International Symposium on 'Numerical Models in Geomechanics - NUMOG IX' held in Ottawa, Canada, 25-27 August 2004. Highlighting a number of new developments in the area, papers concentrate upon the following four main areas: * constitutive relations for geomaterials * numerical algorithms: formulation and performance * modelling of transient, coupled and dynamic problems * application of numerical techniques to practical problems. Representing the most advanced, modern findings in the field, Numerical Models in Geomechanics is a comprehensive and impeccably-researched text, ideal for students and researchers as well as practising engineers.
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:
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.
Download or read book Numerical Methods in Geotechnical Engineering IX written by António S. Cardoso and published by CRC Press. This book was released on 2018-06-19 with total page 2430 pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerical Methods in Geotechnical Engineering IX contains 204 technical and scientific papers presented at the 9th European Conference on Numerical Methods in Geotechnical Engineering (NUMGE2018, Porto, Portugal, 25—27 June 2018). The papers cover a wide range of topics in the field of computational geotechnics, providing an overview of recent developments on scientific achievements, innovations and engineering applications related to or employing numerical methods. They deal with subjects from emerging research to engineering practice, and are grouped under the following themes: Constitutive modelling and numerical implementation Finite element, discrete element and other numerical methods. Coupling of diverse methods Reliability and probability analysis Large deformation – large strain analysis Artificial intelligence and neural networks Ground flow, thermal and coupled analysis Earthquake engineering, soil dynamics and soil-structure interactions Rock mechanics Application of numerical methods in the context of the Eurocodes Shallow and deep foundations Slopes and cuts Supported excavations and retaining walls Embankments and dams Tunnels and caverns (and pipelines) Ground improvement and reinforcement Offshore geotechnical engineering Propagation of vibrations Following the objectives of previous eight thematic conferences, (1986 Stuttgart, Germany; 1990 Santander, Spain; 1994 Manchester, United Kingdom; 1998 Udine, Italy; 2002 Paris, France; 2006 Graz, Austria; 2010 Trondheim, Norway; 2014 Delft, The Netherlands), Numerical Methods in Geotechnical Engineering IX updates the state-of-the-art regarding the application of numerical methods in geotechnics, both in a scientific perspective and in what concerns its application for solving practical boundary value problems. The book will be much of interest to engineers, academics and professionals involved or interested in Geotechnical Engineering.
Download or read book Centrifuge Modeling of Liquefaction and Soil structure Interaction written by Tom M. Farrell and published by . This book was released on 1996 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Numerical Modeling of Earthquake Site Response Including Dilation and Liquefaction written by Zhaohui Yang and published by . This book was released on 2000 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Centrifuge Modeling of Soil Liquefaction written by Abbas Abghari and published by . This book was released on 1982 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Numerical and Dynamic Centrifuge Modeling of Initiation of Flow Failure and Interface Behavior written by Chelvarajah Yogachandran and published by . This book was released on 1990 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Download or read book Geohazard Mitigation written by Basanta Raj Adhikari and published by Springer Nature. This book was released on 2021-11-26 with total page 485 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the select proceedings of the Virtual Conference on Disaster Risk Reduction (VCDRR 2021). It emphasizes on the role of civil engineering for a disaster resilient society. It presents latest research in geohazards and their mitigation. Various topics covered in this book are land use, ground response, liquefaction, and disaster mitigation techniques. This book is a comprehensive volume on disaster risk reduction (DRR) and its management for a sustainable built environment. This book will be useful for the students, researchers, policy makers and professionals working in the area of civil engineering, especially disaster management.
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.
Download or read book Geotechnical Modelling written by David Muir Wood and published by CRC Press. This book was released on 2017-12-21 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modelling forms an implicit part of all engineering design but many engineers engage in modelling without consciously considering the nature, validity and consequences of the supporting assumptions. Derived from courses given to postgraduate and final year undergraduate MEng students, this book presents some of the models that form a part of the typical undergraduate geotechnical curriculum and describes some of the aspects of soil behaviour which contribute to the challenge of geotechnical modelling. Assuming a familiarity with basic soil mechanics and traditional methods of geotechnical design, this book is a valuable tool for students of geotechnical and structural and civil engineering as well as also being useful to practising engineers involved in the specification of numerical or physical geotechnical modelling.
Download or read book Hazard Analysis of Seismic Soil Liquefaction written by Yu Huang and published by Springer. This book was released on 2017-04-11 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents comprehensive hazard analysis methods for seismic soil liquefaction, providing an update on soil liquefaction by systematically reviewing the phenomenon’s occurrence since the beginning of this century. It also puts forward a range of advanced research methods including in-situ tests, laboratory studies, physical model tests, numerical simulation, and performance-based assessment. Recent seismic liquefaction-related damage to soils and foundations demonstrate the increasing need for the comprehensive hazard analysis of seismic soil liquefaction in order to mitigate this damage and protect human lives. As such the book addresses the comprehensive hazard analysis of seismic soil liquefaction, including factors such as macroscopic characteristics, evaluating the liquefaction potential, dynamic characteristics and deformation processes, providing reliable evaluation results for liquefaction potential and deformation in the context of risk assessment. “p>
Download or read book Physical Modelling in Geotechnics Two Volume Set written by Sarah Springman and published by CRC Press. This book was released on 2010-06-17 with total page 1530 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book results from the 7th ICPMG meeting in Zurich 2010 and covers a broad range of aspects of physical modelling in geotechnics, linking across to other modelling techniques to consider the entire spectrum required in providing innovative geotechnical engineering solutions. Topics presented at the conference: Soil – Structure – Interaction; Natural Hazards; Earthquake Engineering: Soft Soil Engineering; New Geotechnical Physical; Modelling Facilities; Advanced Experimental Techniques; Comparisons between Physical and Numerical Modelling Specific Topics: Offshore Engineering; Ground Improvement and Foundations; Tunnelling, Excavations and Retaining Structures; Dams and slopes; Process Modelling; Goenvironmental Modelling; Education
