Download or read book Evaluation of Ocean Wave induced Liquefaction in a Large Scale Wave Flume written by David Leo Thielen and published by . This book was released on 1984 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ocean waves propagating over cohesionless seabed deposits produce cyclic shear stresses within the deposit. Under certain conditions these stresses may cause a progressive build-up of pore pressure. Pore pressure accumulation can result in liquefaction or a substantial decrease in the effective stress with attendant large deformations of the seabed deposit. In recognition of the need to study ocean wave-induced liquefaction, a series of large scale wave flume tests were conducted. The test program consisted of generating a series of uniform waves over a sand deposit and measuring the pore pressure response. The pore pressure response was studied for a variety of soil and wave conditions. Specific variables addressed in the study included drainage conditions near the surface of the deposit, relative density of the deposit, magnitude of wave loading, and previous wave loading history. Both the cyclic and mean pore pressure responses in the deposit were determined. Cyclic shear stresses within the deposit are generated by wave-induced cyclic pressure fluctuations at the mudline. For a given wave length, the cyclic shear stresses increase with increasing wave height. Wave-induced liquefaction of a fine sand was observed. A decrease in effective stress and liquefaction resulted from an increase in the mean pore pressure during undrained wave loading. The mean pore pressure increased owing to a transfer of intergranular stress to the pore fluid. Pore pressures cycled about the shifting mean pressure at the same frequency as the wave loading. Mudline pressure fluctuations were not affected by pore pressure changes occurring below the mudline. Liquefaction resulted in gross disturbance of the deposit. Pore pressure accumulation was not observed during drained loading. Several drained tests were conducted for a range of initial relative density and wave conditions. During the drained tests, the relative density of the sand layer increased and settlement of the sand was observed. The increased density of the sand layer was accompanied by attenuation of the cyclic pore pressure fluctuations during the initial wave loading cycles of the test. Following attenuation, the cyclic pore pressure fluctuations remained constant to the end of the test. The effect of previous wave loading was evaluated by comparing the response of tests subjected to previous wave loading with those not subjected to previous wave loading. Previous wave loading resulted in increased stability of the sand with respect to liquefaction potential. The increased stability was the result of an increase in relative density as well as changes in the structure of the deposit. Measured mean pore pressure responses for all the tests were compared to the response predicted by a theoretical model. Theoretical predictions agreed with the measured response except for the case where the deposit was subjected to a previous wave loading history. The potential for pore pressure accumulation and liquefaction of a seabed deposit decreases with: 1) increased drainage at the surface of the deposit, 2) increased relative density, 3) decreased magnitude of wave loading, and 4) previous wave loading.

Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, SIld disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna and broader dissemination. tional publishing house to assure improved service Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 30 (thesis year 1985) a total of 12,400 theses titles from 26 Canadian and 186 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work.

Download or read book Comptes Rendus written by International Association for Hydraulic Research. Congress and published by . This book was released on 1989 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings Offshore Technology Conference written by and published by . This book was released on 1989 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis for Wave induced Liquefaction in Relation to Ocean Floor Stability written by Harry Bolton Seed and published by . This book was released on 1977 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

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.

Download or read book Porous Models for Wave seabed Interactions written by Dong-Sheng Jeng and published by Springer Science & Business Media. This book was released on 2012-10-18 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Porous Models for Wave-seabed Interactions" discusses the Phenomenon of wave-seabed interactions, which is a vital issue for coastal and geotechnical engineers involved in the design of foundations for marine structures such as pipelines, breakwaters, platforms, etc. The most important sections of this book will be the fully detailed theoretical models of wave-seabed interaction problem, which are particularly useful for postgraduate students and junior researchers entering the discipline of marine geotechnics and offshore engineering. This book also converts the research outcomes of theoretical studies to engineering applications that will provide front-line engineers with practical and effective tools in the assessment of seabed instability in engineering design. Prof. Dong-Sheng Jeng works at Shanghai Jiao Tong University, China.

Download or read book Analyses for Wave induced Liquefaction in Relation to Off shore Construction written by M. Shamimur Rahman and published by . This book was released on 1977 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Liquefaction Around Marine Structures With Cd rom written by B Mutlu Sumer and published by World Scientific. This book was released on 2014-03-27 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, whose primary aim is to describe liquefaction processes and their implications for marine structures such as pipelines, sea outfalls, quay walls and caisson breakwaters, discusses the subject of soil liqeufaction in the marine environment.In addition, the physics of liquefaction (including examples illustrating the catastrophic consequences of soil liquefaction with regard to marine structures) are described, and the mathematical modelling of liqeufaction is treated in detail. Also, carefully selected numerical examples support the discussion of assessing liquefaction potential, and benchmark cases such as buried gas pipelines and their floatation, caisson breakwaters, cover stones and their interaction with liquefied soil along with counter measures are investigated.

Download or read book Water Waves Generated by Underwater Explosion written by Bernard LeMéhauté and published by World Scientific Publishing Company Incorporated. This book was released on 1996 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book on explosion-generated water waves. It presents the theoretical foundations and experimental results of the generation and propagation of impulsively generated waves resulting from underwater explosions. Many of the theories and concepts presented herein are applicable to other types of water waves, in particular, tsunamis and waves generated by the fall of a meteorite. Linear and nonlinear theories, as well as experimental calibrations, are presented for cases of deep and shallow water explosions. Propagation of transient waves on dissipative, nonuniform bathymetries together with laboratory simulations are analyzed and discussed.

Download or read book Journal of the Geotechnical Engineering Division written by American Society of Civil Engineers. Geotechnical Engineering Division and published by . This book was released on 1978 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanics of Wave Seabed Structure Interactions written by Dong-Sheng Jeng and published by Cambridge University Press. This book was released on 2018-04-26 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: An in-depth look at the mechanics of combined stresses imposed on the seabed from wave action and marine infrastructure.

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1982 with total page 916 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Mechanics of Scour in the Marine Environment written by B. Mutlu Sumer and published by World Scientific. This book was released on 2002 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt: Treats the subject of local sour around different kinds of marine structures, exposed to waves and/or currents.

Download or read book Physical Modelling in Geotechnics Volume 1 written by Andrew McNamara and published by CRC Press. This book was released on 2018-07-11 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physical Modelling in Geotechnics collects more than 1500 pages of peer-reviewed papers written by researchers from over 30 countries, and presented at the 9th International Conference on Physical Modelling in Geotechnics 2018 (City, University of London, UK 17-20 July 2018). The ICPMG series has grown such that two volumes of proceedings were required to publish all contributions. The books represent a substantial body of work in four years. Physical Modelling in Geotechnics contains 230 papers, including eight keynote and themed lectures representing the state-of-the-art in physical modelling research in aspects as diverse as fundamental modelling including sensors, imaging, modelling techniques and scaling, onshore and offshore foundations, dams and embankments, retaining walls and deep excavations, ground improvement and environmental engineering, tunnels and geohazards including significant contributions in the area of seismic engineering. ISSMGE TC104 have identified areas for special attention including education in physical modelling and the promotion of physical modelling to industry. With this in mind there is a special themed paper on education, focusing on both undergraduate and postgraduate teaching as well as practicing geotechnical engineers. Physical modelling has entered a new era with the advent of exciting work on real time interfaces between physical and numerical modelling and the growth of facilities and expertise that enable development of so called ‘megafuges’ of 1000gtonne capacity or more; capable of modelling the largest and most complex of geotechnical challenges. Physical Modelling in Geotechnics will be of interest to professionals, engineers and academics interested or involved in geotechnics, geotechnical engineering and related areas. The 9th International Conference on Physical Modelling in Geotechnics was organised by the Multi Scale Geotechnical Engineering Research Centre at City, University of London under the auspices of Technical Committee 104 of the International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE). City, University of London, are pleased to host the prestigious international conference for the first time having initiated and hosted the first regional conference, Eurofuge, ten years ago in 2008. Quadrennial regional conferences in both Europe and Asia are now well established events giving doctoral researchers, in particular, the opportunity to attend an international conference in this rapidly evolving specialist area. This is volume 1 of a 2-volume set.

Download or read book Proceedings First Indian Conference in Ocean Engineering written by and published by . This book was released on 1981 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: