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Author : Toru Higuchi
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (277 download)
Download or read book Liquefaction and Cyclic Failure of Low Plasticity Silt written by Toru Higuchi and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Shuying Wang
Publisher : Springer
ISBN 13 : 9811070830
Total Pages : 167 pages
Book Rating : 4.8/5 (11 download)
Download or read book Monotonic, Cyclic and Postcyclic Shear Behavior of Low-plasticity Silt written by Shuying Wang and published by Springer. This book was released on 2018-01-24 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers the main research findings on monotonic, cyclic and postcyclic shear behavior of low-plasticity. Drawing on the low-plasticity silt from the Mississippi River Valley, it determines that the silt’s critical state line can be changed due to liquefaction, and thus offers valuable insights and reference data for further investigations on soil mechanics and engineering applications to verify the above research findings. Low-plasticity silt with a plasticity index of less than 10, though commonly found around the world, nonetheless differs greatly from sand and clay in terms of its shear behavior. Failure to take into account the differences in shear characteristics between silt, clay and sand will lead to overconservative designs of offshore structures. In particular, dynamic loading from earthquakes, trains and ocean waves can set off the liquefaction of low-plasticity silt, and with it, major disasters and losses of properties. Additionally, some civil infrastructures have failed not only due to cyclic loading during an earthquake, but also due to reduction of shear strength or stiffness after that.
Author : Th. Triantafyllidis
Publisher : CRC Press
ISBN 13 : 9781439833452
Total Pages : 716 pages
Book Rating : 4.8/5 (334 download)
Download or read book Cyclic Behaviour of Soils and Liquefaction Phenomena written by Th. Triantafyllidis and published by CRC Press. This book was released on 2004-07-01 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt: This conference brought together specialists in cyclic soil behaviour in order to discuss important results and new ideas in the field, and to share expertise in design of various problems involving cyclic or dynamic behaviour of soils. This book covers a variety of topics: * Theory and analysis, including constitutive relations of soil under cyclic loading, post-seismic stability analysis of soil/structure, dynamic stability of structures, liquefaction analysis of marine structures due to cyclic loading, and more * Cyclic and dynamic laboratory and model testing, centrifuge testing and in-situ testing. * Numerical analysis, including computer methods * Design of industrial applications and marine structures, installation methods of piles, vibrocompaction, densification of ballast in railway structures, case studies of earthquakes and post-liquefaction observations.
Author : John Arthur Sandoval-Shannon
Publisher :
ISBN 13 :
Total Pages : 534 pages
Book Rating : 4.:/5 (189 download)
Download or read book Liquefaction and Settlement Characteristics of Silt Soils written by John Arthur Sandoval-Shannon and published by . This book was released on 1989 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Abdulaziz Osman Abdelkadr
Publisher : BoD – Books on Demand
ISBN 13 : 3737610185
Total Pages : 274 pages
Book Rating : 4.7/5 (376 download)
Download or read book Cyclic behaviour and liquefaction potential of silty sand: Experimental and numerical investigations written by Abdulaziz Osman Abdelkadr and published by BoD – Books on Demand. This book was released on 2023-01-01 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study experimental and numerical investigations have been carried out with the emphasis on studying the behaviour and liquefaction state of typical silty sand sampled from the Mekelle area in Ethiopia under monotonic and cyclic undrained loadings. Experiments have been carried out to measure the pore pressure accumulation, deformation characteristics and related effective stress paths. A numerical model was then used to simulate the behaviour and liquefaction state associated with the changes in the stress-strain-pore pressure levels by means of the finite element method (FEM) using the FE code Tochnog (Tochnog Professional Company 2021).
Author : Ali Mohammad Izadi
Publisher :
ISBN 13 :
Total Pages : 612 pages
Book Rating : 4.:/5 (261 download)
Download or read book Liquefaction and Postliquefaction Behavior of Low Plasticity Silts Using Cyclic Triaxial Tests written by Ali Mohammad Izadi and published by . This book was released on 2008 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A considerable amount of research has been conducted on the strength of both clays and sands, while research on low plasticity silt has been limited. the objective of this experimental study is to evaluate the cyclic behavior and liquefaction potential of low plasticity silts. The cyclic behavior of sand-like and clay-like soils have been compared to the cyclic behavior of low plasticity silts"--Abstract, leaf iii.
Author : Mohammad Eslami
Publisher :
ISBN 13 :
Total Pages : 266 pages
Book Rating : 4.:/5 (17 download)
Download or read book Experimental Mapping of Elastoplastic Surfaces for Sand and Cyclic Failure of Low-Plasticity Fine-Grained Soils written by Mohammad Eslami and published by . This book was released on 2017 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part I of this dissertation describes a simple experimental technique that can be used to obtain the slopes of the plastic potential and yield functions during shear based on the deformation theory of plasticity. The method imposes small perturbations in the direction of the stress increment by closing the drainage valve, thereby abruptly switching from drained to undrained loading conditions during plastic loading. Elastoplastic moduli are obtained immediately before and after the perturbation from the measured deviatoric stress, mean effective stress, deviatoric strains, and volumetric strains for the stress paths immediately before and after closing the drain valve. During drained shear, samples were sheared while the mean effective stress was maintained constant. Combining tests performed at several confining stresses, the proposed method can map yield and plastic potential surfaces and predict their evolution for a wide range of stresses. Part II of the dissertation focuses on providing insights into the effects of changes in clay mineralogy and pore-fluid chemistry on cyclic behavior of low-plasticity fine-grained soils. A series of cyclic and monotonic direct simple shear experiments was conducted on three low-plasticity fine-grained mixtures of non-plastic silt with either bentonite or kaolinite clay minerals blended with fresh deionized water or saline water. The clay fractions were adjusted to achieve a plasticity index of PI = 9 for all three mixtures to study differences or similarities in their behavior and to examine the effectiveness of index properties in identifying the observed differences in lab results. Even though all three blends have the same plasticity index, significant differences in their cyclic response were observed. Results indicate that plasticity index is an insufficient indicator of the cyclic behavior of low-plasticity fine-grained soils, and corrections for pore fluid chemistry and clay minerology may be needed for future liquefaction susceptibility and cyclic softening assessment procedures. Site-specific cyclic and monotonic testing for important projects remains to be the recommended approach for properly characterizing the seismic behavior of such soils with the current level of understating of their complex behavior. The collected experimental data, visualization and post-processing tools, as well as documented experimental procedures of Part I are curated and published for public access on http:www.DesignSafe-ci.org. The data from Part II is being curated and will be published online in the near future.
Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (139 download)
Download or read book Cyclic Behavior of Transitional Fine-Grained Soils in Northern Willamette Valley written by and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: As discussed within studies from Idriss and Boulanger (2008) and Bray and Sancio (2006), the undrained cyclic shear behavior of low-plasticity fine-grained soils will transition between liquefaction (sand-like behavior) to cyclic softening (clay-like behavior) over a narrow range of plasticity index (PI). Despite not being sufficiently understood, the cyclic behavior of low plasticity silts has become an increasingly important field of study due to the significant impact it has on ground deformations and infrastructure failure in areas that are seismically active. Laboratory tests were performed on soils by third party consultants on a site located in the northern Willamette Valley, and the results were provided to Portland State University for further analysis. The soils in this study had PI values ranging from 4 to 15, and were classified as low plasticity silts and clays (ML, CL) using USCS classification. The cyclic behavior of these soils was analyzed and compared to the behavior of other Pacific Northwestern silt soils. The relationship between cyclic resistance ratio (CRR) and stress history (overconsolidation ratio) were explored in this study, as well as the relationship between post-cyclic strength degradation and excess porewater pressure during cyclic loading. The results of this study will improve our understanding of cyclic behavior of low plasticity silts in seismic evaluations of infrastructure in the Pacific Northwest.
Author : Shuying Wang
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (775 download)
Download or read book Postcyclic Behavior of Low-plasticity Silt written by Shuying Wang and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Liquefaction of low-plasticity silt has been reported during earthquakes in the recent past. Excess pore pressure builds up due to the dynamic loading and then dissipates. The postcyclic behavior of low-plasticity silt was investigated in this research for materials obtained from the Mississippi River Valley. The experimental program involved specimen preparation using a slurry consolidation approach. A special technique was developed for specimen movement, reducing the testing program time by half. Both static and cyclic triaxial tests were conducted to confirm the ability to prepare replica specimens. In order to characterize the monotonic behavior, triaxial tests were conducted to determine the effective friction angle, critical state line, and normalized behavior. Then specimens were subjected to cyclic loading to develop the liquefaction curve. After full liquefaction, excess pore pressure was dissipated until various reconsolidation levels. The effect of full liquefaction on the permeability and compressibility was studied. The variation in postcyclic shear strength and stiffness with reconsolidation level and the effect of apparent consolidation on shear behavior were also discussed. The critical state lines for the pre- and postliquefaction conditions were compared and found to be not parallel. After limited liquefaction, two unique conditions were tested, at no reconsolidation and at full reconsolidation. The shear strength and stiffness changed significantly at an excess pore pressure ratio greater than 0.70. The experimental program culminated with the study of the effect of plasticity on the pre- and postcyclic shear behavior. Silt-bentonite mixtures resulted in modified plasticity and the transformation from a dilative to a plastic behavior were captured at relatively low plasticity (PI> 6)--Abstract, leaf iii
Author : National Academies of Sciences, Engineering, and Medicine
Publisher :
ISBN 13 : 9780309440271
Total Pages : 350 pages
Book Rating : 4.4/5 (42 download)
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 : Hemanta Hazarika
Publisher : CRC Press
ISBN 13 : 1134044623
Total Pages : 776 pages
Book Rating : 4.1/5 (34 download)
Download or read book Scrap Tire Derived Geomaterials - Opportunities and Challenges written by Hemanta Hazarika and published by CRC Press. This book was released on 2007-11-08 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt: SCRAP TIRE DERIVED GEOMATERIALS is a compilation of peer-reviewed papers presented at the International Workshop on Scrap Tire Derived Geomaterials (IW-TDGM 2007) in Yokosuka, Japan in March 2007.The workshop was the first ever international forum on scrap tire derived geomaterials (TDGM), bringing together people from various disciplines working i
Author : Ross W. Boulanger
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (641 download)
Download or read book Evaluating the Potential for Liquefaction Or Cyclic Failure of Silts and Clays written by Ross W. Boulanger and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Harry Bolton Seed
Publisher :
ISBN 13 :
Total Pages : 146 pages
Book Rating : 4.3/5 (91 download)
Download or read book Ground Motions and Soil Liquefaction During Earthquakes written by Harry Bolton Seed and published by . This book was released on 1982 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael Jefferies
Publisher : CRC Press
ISBN 13 : 020330196X
Total Pages : 625 pages
Book Rating : 4.2/5 (33 download)
Download or read book Soil Liquefaction written by Michael Jefferies and published by CRC Press. This book was released on 2006-09-04 with total page 625 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil liquefaction is a major concern in areas of the world subject to seismic activity or other repeated vibration loads. This book brings together a large body of information on the topic, and presents it within a unified and simple framework. The result is a book which will provide the practising civil engineer with a very sound understanding of
Author : Ceryan, Nurcihan
Publisher : IGI Global
ISBN 13 : 1522527109
Total Pages : 788 pages
Book Rating : 4.5/5 (225 download)
Download or read book Handbook of Research on Trends and Digital Advances in Engineering Geology written by Ceryan, Nurcihan and published by IGI Global. This book was released on 2017-07-12 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt: Engineering geologists face the task of addressing geological factors that can affect planning with little time and with few resources. A solution is using the right tools to save time searching for answers and devote attention to making critical engineering decisions. The Handbook of Research on Trends and Digital Advances in Engineering Geology is an essential reference source for the latest research on new trends, technology, and computational methods that can model engineering phenomena automatically. Featuring exhaustive coverage on a broad range of topics and perspectives such as acoustic energy, landslide mapping, and natural hazards, this publication is ideally designed for academic scientists, industry and applied researchers, and policy and decision makers seeking current research on new tools to aid in timely decision-making of critical engineering situations.
Author : Rolando P. Orense
Publisher : CRC Press
ISBN 13 : 1138026433
Total Pages : 282 pages
Book Rating : 4.1/5 (38 download)
Download or read book Soil Liquefaction during Recent Large-Scale Earthquakes written by Rolando P. Orense and published by CRC Press. This book was released on 2014-04-15 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil Liquefaction during Recent Large-Scale Earthquakes contains selected papers presented at the New Zealand – Japan Workshop on Soil Liquefaction during Recent Large-Scale Earthquakes (Auckland, New Zealand, 2-3 December 2013). The 2010-2011 Canterbury earthquakes in New Zealand and the 2011 off the Pacific Coast of Tohoku Earthquake in Japan have caused significant damage to many residential houses due to varying degrees of soil liquefaction over a very wide extent of urban areas unseen in past destructive earthquakes. While soil liquefaction occurred in naturally-sedimented soil formations in Christchurch, most of the areas which liquefied in Tokyo Bay area were reclaimed soil and artificial fill deposits, thus providing researchers with a wide range of soil deposits to characterize soil and site response to large-scale earthquake shaking. Although these earthquakes in New Zealand and Japan caused extensive damage to life and property, they also serve as an opportunity to understand better the response of soil and building foundations to such large-scale earthquake shaking. With the wealth of information obtained in the aftermath of both earthquakes, information-sharing and knowledge-exchange are vital in arriving at liquefaction-proof urban areas in both countries. Data regarding the observed damage to residential houses as well as the lessons learnt are essential for the rebuilding efforts in the coming years and in mitigating buildings located in regions with high liquefaction potential. As part of the MBIE-JSPS collaborative research programme, the Geomechanics Group of the University of Auckland and the Geotechnical Engineering Laboratory of the University of Tokyo co-hosted the workshop to bring together researchers to review the findings and observations from recent large-scale earthquakes related to soil liquefaction and discuss possible measures to mitigate future damage. Soil Liquefaction during Recent Large-Scale Earthquakes will be of great interest to researchers, academics, industry practitioners and other professionals involved in Earthquake Geotechnical Engineering, Foundation Engineering, Earthquake Engineering and Structural Dynamics.
Author : Desmond Charles Arthur Andrews
Publisher :
ISBN 13 :
Total Pages : 406 pages
Book Rating : 4.:/5 (318 download)
Download or read book Liquefaction of Silty Soils written by Desmond Charles Arthur Andrews and published by . This book was released on 1997 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:
