Experimental Research Into The Behavior Of Piles And Pile Groups Subjected To Cyclic Lateral Loading
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Experimental Research Into The Behavior Of Piles And Pile Groups Subjected To Cyclic Lateral Loading
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Author : Lymon C. Reese
language : en
Publisher:
Release Date : 1988
Experimental Research Into The Behavior Of Piles And Pile Groups Subjected To Cyclic Lateral Loading written by Lymon C. Reese and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Materials categories.
A research program to study the behavior of piles and pile groups subjected to cyclic lateral loading was conducted at a Houston, Texas site. A single pile and a nine-pile group situated in the natural clay were tested and then the upper several feet of clay were removed and replaced with sand and the tests were repeated. Following these tests, another study was undertaken to measure experimentally pile-head flexibility reduction (interaction) factors for the pile group in sand. Tests were made cyclically at varying magnitudes of applied groundline shear on single piles and two-pile and three-pile subgroups, and the response of unloaded piles in the group was measured. Concurrent with these studies, pressuremeter (PMT) and cone penetrometer (CPT) tests were performed in both the clay and the sand from which capacity predictions were made. Each of these studies generated a report with voluminous data. This report summarizes the major findings into one volume. Keywords: Cyclic lateral loading, Interaction factors, Piles, Pile groups, Scour, Pile structures. (SDW).
Behavior Of A Large Scale Pile Group Subjected To Cyclic Lateral Loading
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Author : Dan Allen Brown
language : en
Publisher:
Release Date : 1988
Behavior Of A Large Scale Pile Group Subjected To Cyclic Lateral Loading written by Dan Allen Brown and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Materials categories.
A large-scale group of nine steel pipe piles in a closely spaced arrangement was subjected to cyclic lateral loading with water above the ground surface. The piles were 10.75 in. in diameter and 40 ft long and were installed at a center-to-center spacing of 3-pile diameters. The soils at the Houston, Texas site consisted of a stiff, overconsolidated clay. In an attempt to model storm loading of offshore structures, the loading was electronically controlled to follow a sinusoidal curve of deflection versus time with a 30-sec period. All of the piles in the group were extensively instrumented to obtain measurements of shear in the individual piles and bending moment as a function of depth. Results were compared with the results of a similar load test on a single pile that was about 30 ft away. Keywords: Cohesive soils, Cyclic lateral loading, Pile groups.
Pile Groups Under Cyclic Lateral Loading
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Author : Christoph Niemann
language : en
Publisher: BoD – Books on Demand
Release Date : 2020-01-01
Pile Groups Under Cyclic Lateral Loading written by Christoph Niemann and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-01-01 with Science categories.
It is the aim of this research work is to investigate and to assess quatitatively as well as quantitatively the bearing behaviour of pile groups subjected to cyclic lateral loading. In this context, the influences of different boundary conditions, in particular the soil properties and the pile group geometry are to be analysed experimentally and numerically. Based on a brief literature review in chapter 2, model tests (centrifuge and small-scale at 1g) and numerical investigations have been carried out to contribute to a better understanding of the cyclic behaviour of pile groups. Chapter 3 describes the test procedure and summarises the results of centrifuge tests, which have been carried out at the Centre for Offshore Foundation Systems (COFS) in Perth, Australia. Further investigations have been carried out by means of smallscale model tests at 1g in the testing facilities at the University of Kassel, Germany, with the results as summarised in chapter 4. A comparison of individual results of both test series is provided in chapter 5. The numerical studies in chapter 6 have been carried out in order to analyse the general ability of numerical simulations to calculate the response of pile groups to cyclic lateral loading. Based on the previously derived results, chapter 7 provides equations that can be applied to estimate the cyclic accumulation of lateral displacements of pile groups as well as the cyclic changes of the load distribution within pile groups.
Single Piles And Pile Groups Under Lateral Loading
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Author : Lymon C. Reese
language : en
Publisher: CRC Press
Release Date : 2010-12-15
Single Piles And Pile Groups Under Lateral Loading written by Lymon C. Reese and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-12-15 with Technology & Engineering categories.
The complexities of designing piles for lateral loads are manifold as there are many forces that are critical to the design of big structures such as bridges, offshore and waterfront structures and retaining walls. The loads on structures should be supported either horizontally or laterally or in both directions and most structures have in common t
Response Of Pile Foundations Due To Lateral Force And Soil Movements
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Author : Hongyu Qin
language : en
Publisher:
Release Date : 2010
Response Of Pile Foundations Due To Lateral Force And Soil Movements written by Hongyu Qin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Electronic dissertations categories.
Abstract : This research has investigated the response of pile foundations subjected to lateral force applied directly to pile head and loadings arising from lateral soil movements of the surrounding ground. The behaviour of pile foundations subjected to lateral soil movements was studied through physical modelling with a specially designed testing apparatus. Laboratory experiments have been undertaken on a single pile embedded in progressive moving sand. A triangular loading block was used in the model tests to induce a progressive soil movement profile. Apart from eight general tests, sixteen tests were conducted on a single pile to examine the effects of the distance between the source where soil movements were induced and the pile location, the magnitude of axial load applied at pile head, the variation of loading block angle, varying combination of sliding and stable layer depths, and pile diameter on the responses of piles. The results of previously conducted pile tests with a uniform soil movement profile were compared with those of the current tests to examine the effect of soil movement profiles on the pile behaviour. Simple solutions were proposed for predicting the pile responses. They provided good estimate of the development of maximum bending moment and maximum shear force in the piles with soil movement. Importantly, the maximum bending moments induced by the soil movements were found to be linearly related to the maximum shear forces (sliding thrust), independent of the magnitude and depth of soil movement and soil movement profiles. Experiments have also been conducted on pile groups in progressive moving sand, including various pile group configurations and spacing. Both free-head and cappedhead fixity conditions have been considered. The findings show that the resistances of the piles to lateral soil movements significantly rely on their locations in a group, especially for piles arranged in a line parallel to the soil movement direction. The results of the pile group tests were compared with those of the single pile tests. Group factors were defined in terms of maximum bending moment and modulus of subgrade reaction to quantify the impact of group effect. The simple solutions developed were extended for predicting the response of individual piles in a group with soil movement. The static and cyclic responses of laterally loaded piles in cohesionless soils have been investigated as well. Guideline for estimating the design parameters for laterally loaded rigid piles in cohesionless soils were provided from extensive back calculation of measured responses of fifty-one pile tests. The elastic-plastic solutions presented by Guo (2008) were used in the back calculation. Simple expressions were presented for estimating the parameters used in the solutions. The reliability of the back calculation, the effects of the ratio of loading eccentricity to pile embedded length on the nonlinear pile response and lateral load capacity were investigated. Additionally, the apparatus was modified to apply cyclic lateral loading, with which a series of model tests were conducted on piles in dry sand under static and cyclic loadings. Analyses of the test results show that the cyclic load level has a greater impact on the pile behaviour than the number of cycles. It is noted that the gradient of the limiting force profile will decrease and the modulus of subgrade reaction will increase, after a number of unloading and reloading cycles. The induced maximum bending moment can be estimated from the applied lateral load, eccentricity of the load, and the depth at which the maximum bending moment occurs.
An Experimental Study Of The Behavior Of Drilled Shaft Foundations Subjected To Static And Repeated Lateral And Moment Loading Under Drained Conditions
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Author : Sherif W. Agaiby
language : en
Publisher:
Release Date : 1991
An Experimental Study Of The Behavior Of Drilled Shaft Foundations Subjected To Static And Repeated Lateral And Moment Loading Under Drained Conditions written by Sherif W. Agaiby and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.
Pile Foundations In Engineering Practice
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Author : Shamsher Prakash
language : en
Publisher: John Wiley & Sons
Release Date : 1991-01-16
Pile Foundations In Engineering Practice written by Shamsher Prakash and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991-01-16 with Technology & Engineering categories.
This is a concise, systematic and complete treatment of the design and construction of pile foundations. Discusses pile behavior under various loadings and types of piles and their installation, including consideration of soil parameters. It provides step-by-step design procedures for piles subject to vertical loading and pullout, lateral, inclined and eccentric loads, or dynamic loads, and for piles in permafrost. Also describes load test procedures and their interpretation and buckling of long, slender piles with and without supported length. The closing chapter presents case histories of prediction and performance of piles and pile groups. Includes numerous solved problems.
Technology Assessment And Research Program For Offshore Minerals Operations
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Author : John B. Gregory
language : en
Publisher:
Release Date : 1988
Technology Assessment And Research Program For Offshore Minerals Operations written by John B. Gregory and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Marine mineral resources categories.
Report Of Sixteenth Interagency Research Coordination Conference
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Author :
language : en
Publisher:
Release Date : 1989
Report Of Sixteenth Interagency Research Coordination Conference written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Civil engineering categories.
An Experimental Study Of The Behavior Of Drilled Shaft Foundations In Clay Under Static And Repeated Lateral And Moment Loading
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Author : Paul Wesley Mayne
language : en
Publisher:
Release Date : 1991
An Experimental Study Of The Behavior Of Drilled Shaft Foundations In Clay Under Static And Repeated Lateral And Moment Loading written by Paul Wesley Mayne and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.