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Author : Scott A. Ashford
Publisher :
ISBN 13 :
Total Pages : 286 pages
Book Rating : 4.:/5 (318 download)
Download or read book Full-scale Behavior of Laterally Loaded Deep Foundations in Liquefied Sand written by Scott A. Ashford and published by . This book was released on 2000 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Thomas Jay Weaver
Publisher :
ISBN 13 :
Total Pages : 506 pages
Book Rating : 4.:/5 (318 download)
Download or read book Behavior of Liquefying Sand and CISS Piles During Full-scale Lateral Load Tests written by Thomas Jay Weaver and published by . This book was released on 2001 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Dipanjan Basu
Publisher : Purdue University Press
ISBN 13 : 9781622601264
Total Pages : 152 pages
Book Rating : 4.6/5 (12 download)
Download or read book Analysis of Laterally Loaded Piles in Multilayered Soil Deposits written by Dipanjan Basu and published by Purdue University Press. This book was released on 2007-10-01 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report focuses on the development of a new method of analysis of laterally loaded piles embedded in a multi-layered soil deposit treated as a three-dimensional continuum. Assuming that soil behaves as a linear elastic material, the governing differential equations for the deflection of laterally loaded piles were obtained using energy principles and calculus of variations. The differential equations were solved using both the method of initial parameters and numerical techniques. Soil resistance, pile deflection, slope of the deflected pile, bending moment and shear force can be easily obtained at any depth along the entire pile length. The results of the analysis were in very good agreement with three-dimensional finite element analysis results. The analysis was further extended to account for soil nonlinearity. A few simple constitutive relationships that allow for modulus degradation with increasing strain were incorporated into the analysis. The interaction of piles in groups was also studied.
Author : Scott A. Ashford
Publisher :
ISBN 13 :
Total Pages : 568 pages
Book Rating : 4.:/5 (318 download)
Download or read book TILT written by Scott A. Ashford and published by . This book was released on 1999 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the results of the Treasure Island Liquefaction Test (TILT), a joint project carried out by the University of California, San Diego, and Brigham Young University. To improve our understanding of the lateral load behavior of deep foundations in liquefied soil, a series of full-scale lateral load tests were performed at the National Geotechnical Experimentation Site (NGES) at Treasure Island in San Francisco, California. The ultimate goal of the TILT project was to develop lateral load-displacement relationships for a variety of individual piles and pile groups in liquefied sand under full-scale conditions. The tests were carried out using a high-speed hydraulic loading system after the sand surrounding the piles was liquefied using blasting techniques. This report presents backcalculated p-y curves for single pipe piles, pile groups, and cast-in-steel shell piles before and during liquefaction, as well as through dissipation of excess pore water pressures. In addition, recommendations with regard to design of deep foundations in liquefied soil are presented.
Author : Ross W. Boulanger
Publisher :
ISBN 13 :
Total Pages : 344 pages
Book Rating : 4.3/5 (91 download)
Download or read book Seismic Performance and Simulation of Pile Foundations in Liquefied and Laterally Spreading Ground written by Ross W. Boulanger and published by . This book was released on 2006 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of a workshop on Seismic Performance and Simulation of Pile Foundations in Liquefied and Laterally Spreading Ground, held in Davis, California, March 16-18, 2005. Sponsored by the Pacific Earthquake Engineering Research Center; University of California at Berkeley; Center for Urban Earthquake Engineering; Tokyo Institute of Technology; Geo-Institute of ASCE. This collection contains 25 papers that discuss physical measurements and observations from earthquake case histories, field tests in blast-liquefied ground, dynamic centrifuge model studies, and large-scale shaking table studies. Papers contain recent findings on fundamental soil-pile interaction mechanisms, numerical analysis methods, and reviews and evaluations of existing and emerging design methodologies. This proceeding provides comprehensive coverage of a major issue in earthquake engineering practice and hazard mitigation efforts.
Author : Murad Abu-Farsakh
Publisher : Springer
ISBN 13 : 3319616420
Total Pages : 314 pages
Book Rating : 4.3/5 (196 download)
Download or read book Advances in Analysis and Design of Deep Foundations written by Murad Abu-Farsakh and published by Springer. This book was released on 2017-07-11 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume on “Advances in Analysis and Design of Deep Foundations” contains 22 technical papers which cover various aspects of analysis and design of deep foundations based on full-scale field testing, numerical modeling, and analytical solutions. The technical papers are 8-10 pages long that present the results and findings from research as well as practical-oriented studies on deep foundations that are of interest to civil/geotechnical engineering community. The topics cover a wide spectrum of applications that include evaluation of the axial and lateral capacity of piles, pile group effects, evaluation of the increase in pile capacity with time (or pile setup), influence of excavation on pile capacity, study the behavior of pile raft caisson foundations, evaluate the bearing capacity and settlement of piles from cone penetration tests, etc. This volume is part of the proceedings of the 1st GeoMEast International Congress and Exhibition on Sustainable Civil Infrastructures, Egypt 2017.
Author : Raymond Lundgren
Publisher : ASTM International
ISBN 13 : 9780803102910
Total Pages : 621 pages
Book Rating : 4.1/5 (29 download)
Download or read book Behavior of Deep Foundations written by Raymond Lundgren and published by ASTM International. This book was released on 1979 with total page 621 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Elvis Ishimwe
Publisher :
ISBN 13 :
Total Pages : 440 pages
Book Rating : 4.:/5 (19 download)
Download or read book Liquefaction-induced Dragload And/or Downdrag on Deep Foundations Within the New Madrid Seismic Zone written by Elvis Ishimwe and published by . This book was released on 2018 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deep foundation elements are typically used to transfer structural loads for multi-story buildings and large-span bridges to a competent soil layer when 1) the soil close to the ground surface has no sufficient bearing capacity, and when 2) liquefiable soils are encountered. The majority of the bridges constructed within seismic zones rely upon the stability of earthen embankments and deep foundation that are installed above or within liquefiable soil deposits. Despite large factor of safety values or different load and resistance factors being used to adequately design deep foundations within seismic areas, soil liquefaction may cause extensive damage to the structure by 1) reducing the axial geotechnical resistances, 2) reducing the lateral load capacity, 3) adding additional loads to the foundation (dragload), 4) inducing excessive foundation settlements (downdrag), and 5) causing lateral spreading on the soil surrounding the foundation. The compressive movement of the soil caused by liquefaction affects the distribution of the load along a deep foundation. Dragloads are developed when the amount of the soil settlement is larger than the amount of foundation settlement. According to Muhunthan et al. (2017), the developed dragload may exceed the structural axial strength of the deep foundation in the extreme events. This additional load can significantly impact the axial behavior of a deep foundation. In addition, the liquefaction-induced settlements may affect serviceability of the structure by causing downdrag on the installed deep foundation element. Many of the existing design methods to address dragload and downdrag are based on the consolidation phenomenon. Therefore, there is an immediate need for research to evaluate the impact of liquefaction-induced dragload and dragload on the performance of deep foundation elements constructed in earthquake prone areas. Full-scale axial load tests and full-scale blast-induced liquefaction tests were performed around three drilled shaft foundations and three driven pile foundations to 1) evaluate the existing design methods, and 2) investigate the effects of liquefaction-induced dragload and downdrag on deep foundations. The tested foundations were constructed at the Turrell Arkansas Test Site (TATS), located within the New Madrid Seismic Zone (NMSZ), and Mississippi Embayment.
Author : Ronald Y. S. Pak
Publisher :
ISBN 13 :
Total Pages : 224 pages
Book Rating : 4.3/5 (91 download)
Download or read book Soil Dynamics and Liquefaction 2000 written by Ronald Y. S. Pak and published by . This book was released on 2000 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: GSP 107 contains 13 papers on soil dynamics and liquefaction presented at sessions of Geo-Denver 2000, held in Denver, Colorado, August 5-8, 2000.
Author : Osman Amr El Menchawi
Publisher :
ISBN 13 :
Total Pages : 650 pages
Book Rating : 4.:/5 (318 download)
Download or read book Development of Generalized Pseudostatic P-y Curves for Liquefied Sands written by Osman Amr El Menchawi and published by . This book was released on 2006 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Roland Nimis
Publisher :
ISBN 13 :
Total Pages : 626 pages
Book Rating : 4.E/5 ( download)
Download or read book Proceedings of the Third National Seismic Conference and Workshop on Bridges and Highways written by Roland Nimis and published by . This book was released on 2002 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael W. O'Neill
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (44 download)
Download or read book Drilled Shafts written by Michael W. O'Neill and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jonas Fabian Bauer
Publisher :
ISBN 13 :
Total Pages : 240 pages
Book Rating : 4.:/5 (15 download)
Download or read book Laboratory Model Tests to Assess the Effects of Scale and Stress on the Stiffness of Laterally Loaded Foundations in Sand written by Jonas Fabian Bauer and published by . This book was released on 2018 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offshore wind farms have the ability to meet the energy demands of the USA four times over, and are located offshore where less turbulent, high-speed winds can generate electricity efficiently. The most popular option for offshore foundations are monopiles, which are characterized as large diameter steel pipe pile suited for relatively shallow depth (20 – 30m) so they have a large aspect ratio (length divided by diameter or L/D) of between 3 and 8. The most common design methods for laterally loaded monopiles rely on p-y curves, which were developed for relatively small-diameter and slender piles and might not be suited to predict the behavior of larger diameter and smaller L/D ratios. In order to evaluate the suitability of p-y curves to predict the load – displacement behavior of laterally loaded monopiles a consistent laboratory testing methodology to perform 1-g lateral load tests in sand was developed. The aim of this research is to compare the results from the 1- g lateral load tests to compared to the predictions of a newly developed 3D Finite Element Method (FEM) analysis as well predictions from the American Petroleum Institute (API), which utilizes the p-y method. A repeatable and consistent methodology to conduct a large number of 1-g lateral load tests in sand using spheres to model the state of stresses around a monopile for varying sphere diameters and embedment depths was developed. The sand was characterized by its dynamic properties, which were used as input parameters for the 3D FEM analysis. A total of 50 1-g model tests were conducted and analyzed. The results indicate that the 3D FEM is able the non-linearity in initial stiffness if accurate dynamic properties are used. Additionally, p-y were not able to capture the initial non-linearity in the load – displacement behavior and underestimated the initial stiffness for all tests.
Author : Scott J. Brandenberg
Publisher :
ISBN 13 :
Total Pages : 712 pages
Book Rating : 4.:/5 (72 download)
Download or read book Behavior of Pile Foundations in Liquefied and Laterally Spreading Ground written by Scott J. Brandenberg and published by . This book was released on 2005 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 512 pages
Book Rating : 4.3/5 (91 download)
Download or read book Transportation Research Record written by and published by . This book was released on 2000 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Keith Turner
Publisher : Springer
ISBN 13 : 3540480196
Total Pages : 418 pages
Book Rating : 4.5/5 (44 download)
Download or read book Subsurface Conditions written by Keith Turner and published by Springer. This book was released on 2008-01-26 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: Characterisation of the shallow subsurface has gained in importance as civil and geotechnical engineering and environmental applications have become more dependent on a precise definition of geomechanical and geohydrological properties. A better understanding of the subsurface conditions offers wide-ranging benefits to governments, industry and individual citizens. Subsurface geological modelling became an economic and technologic reality in the late 1980's, when competing 3-D geoscientific information systems were the subject of considerable research and evaluation, especially by the petroleum exploration industry. Investigations in the shallow subsurface impose additional requirements that have only recently become technically and economically achievable. The very shallow urban underground environment, where many infrastructure and utilities elements are located, presents the most difficult characterisation problems. Subsurface modelling techniques have matured, along with modern data base concepts. The evolution of the Internet and Web-browser technologies has expanded information transmission and dissemination capabilities. Subsurface models are being integrated with decision-support systems to provide predictions of technical and economic performance. Yet even the most sophisticated of these models leave some uncertainty in geologic interpretation. A variety of techniques for assessing uncertainty have been developed and are being evaluated.
Author : Gopal Madabhushi
Publisher : Imperial College Press
ISBN 13 : 1848163630
Total Pages : 232 pages
Book Rating : 4.8/5 (481 download)
Download or read book Design of Pile Foundations in Liquefiable Soils written by Gopal Madabhushi and published by Imperial College Press. This book was released on 2010 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pile foundations are the most common form of deep foundations that are used both onshore and offshore to transfer large superstructural loads into competent soil strata. This book provides many case histories of failure of pile foundations due to earthquake loading and soil liquefaction. Based on the observed case histories, the possible mechanisms of failure of the pile foundations are postulated. The book also deals with the additional loading attracted by piles in liquefiable soils due to lateral spreading of sloping ground. Recent research at Cambridge forms the backbone of this book with the design methodologies being developed directly based on quantified centrifuge test results and numerical analysis. The book provides designers and practicing civil engineers with a sound knowledge of pile behaviour in liquefiable soils and easy-to-use methods to design pile foundations in seismic regions. For graduate students and researchers, it brings together the latest research findings on pile foundations in a way that is relevant to geotechnical practice. Sample Chapter(s). Foreword (85 KB). Chapter 1: Performance of Pile Foundations (4,832 KB). Contents: Performance of Pile Foundations; Inertial and Kinematic Loading; Accounting for Axial Loading in Level Ground; Lateral Spreading of Sloping Ground; Axial Loading on Piles in Laterally Spreading Ground; Design Examples. Readership: Researchers, academics, designers and graduate students in earthquake engineering, civil engineering and ocean/coastal engineering.
