Resistance Analysis Of Axially Loaded Drilled Shafts Socketed In Shale
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Resistance Analysis Of Axially Loaded Drilled Shafts Socketed In Shale
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Author : Terry Bryce Burkett
language : en
Publisher:
Release Date : 2013
Resistance Analysis Of Axially Loaded Drilled Shafts Socketed In Shale written by Terry Bryce Burkett and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
An investigation into the load-settlement behavior of two drilled shafts, founded in shale, is presented. The motivation for this research is to advance the understanding on how drilled shafts react under loading in stiff clays and shales. The objectives of the study are to measure the strengths within the subsurface material at the test site, estimate the unit side shear and unit end bearing of the shale-shaft interaction by running two axial load tests, and compare the results to the current design methods that are used to predict the axial capacity of drilled shafts. A comprehensive field investigation, performed by Fugro Consultants, provided strength profiles of the subsurface material at the test site. Through the cooperation of the Texas Department of Transportation (TxDOT), the Association of Drilled Shaft Contractors, and McKinney Drilling Company, two drilled shafts were installed at a highway construction site in Austin, Texas. The load tests were performed by Loadtest, Inc.; using the patented Osterberg-CellTM loading technique to axially displace the shafts. Ensoft, Inc. installed strain gauges at multiple levels within the shafts, making it possible to analyze the shaft mobilization during loading. Ultimate end bearing values of about 100- and 120-ksf were measured for Test Shafts #1 and #2, respectively. The current methods for estimating unit end bearing, developed by TxDOT and the Federal Highway Administration, provide fairly accurate predictions when compared to the measured information. The ultimate side resistance obtained near the O-CellTM in each test was about 20-ksf, however, the measured ultimate side resistance steadily decreased nearing the tip of the shaft. For the zones where the side resistance was believed to be fully mobilized, the TxDOT design method accurately predicts the side resistance. A limited amount of information is currently available for load tests performed in soils with TCP values harder than 2-in per 100 blows. Additional load test information should allow for a stronger correlation between TCP tests and unit resistances for very hard clay-shales, as well as, allowing for further evaluation of the shale-shaft interaction near the shaft tip. The results presented herein demonstrate the effectiveness of the current design methods for drilled shafts and the non-uniformity of side resistance within one- to two-diameters of the shaft tip.
Behavior Of Axially Loaded Drilled Shafts In Clay Shales
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Author : Ravi P. Aurora
language : en
Publisher:
Release Date : 1976
Behavior Of Axially Loaded Drilled Shafts In Clay Shales written by Ravi P. Aurora and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1976 with Clay categories.
Drilled Shafts In Rock
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Author : Lianyang Zhang
language : en
Publisher: CRC Press
Release Date : 2004-05-15
Drilled Shafts In Rock written by Lianyang Zhang and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-05-15 with Technology & Engineering categories.
Drilled shafts in rock are widely used as foundations of heavy structures such as highway bridges and tall buildings. Although much has been learned about the analysis and design of drilled shafts in rock, all the major findings are published in the form of reports and articles in technical journals and conference proceedings. This book i
Drilled Shaft Manual Construction Procedures And Design For Axial Loading
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Author : Lymon C. Reese
language : en
Publisher:
Release Date : 1977
Drilled Shaft Manual Construction Procedures And Design For Axial 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 1977 with Shafts (Excavations) categories.
Drilled shafts have been used on a limited scale for many years as an alternative to driven piles in a variety of foundation problems. However, uncertainty about the behavior of the drilled shaft has forestalled widespread adoption. The subject package, by Dr. Lymon C. Reese of the University of Texas, is intended for use by bridge engineers, geotechnical engineers, and builders of pile foundations. The manual contains rational procedures and practical guidelines for the design and construction of drilled shaft foundations. Volume I presents a rational design procedure for drilled shafts under axial loading and includes guidelines on construction methods, inspection, load testing, specifications, and cost estimates. Volume II presents alternative methods for computing the response of the shaft to lateral loading and presents the structural design of the shaft for axial and/or lateral loading.
Drilled Shaft Design And Construction Guidelines Manual Construction Procedures And Design For Axial Loading
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Author : Lymon C. Reese
language : en
Publisher:
Release Date : 1977
Drilled Shaft Design And Construction Guidelines Manual Construction Procedures And Design For Axial 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 1977 with Boring categories.
Drilled Shaft Manual Structural Analysis And Design For Lateral Loading By
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Author : Lymon C. Reese
language : en
Publisher:
Release Date : 1977
Drilled Shaft Manual Structural Analysis And Design For Lateral Loading By 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 1977 with Shafts (Excavations) categories.
Drilled shafts have been used on a limited scale for many years as an alternative to driven piles in a variety of foundation problems. However, uncertainty about the behavior of the drilled shaft has forestalled widespread adoption. The subject package, by Dr. Lymon C. Reese of the University of Texas, is intended for use by bridge engineers, geotechnical engineers, and builders of pile foundations. The manual contains rational procedures and practical guidelines for the design and construction of drilled shaft foundations. Volume I presents a rational design procedure for drilled shafts under axial loading and includes guidelines on construction methods, inspection, load testing, specifications, and cost estimates. Volume II presents alternative methods for computing the response of the shaft to lateral loading and presents the structural design of the shaft for axial and/or lateral loading.
Analysis And Design Of Axially Loaded Drilled Shafts Socketed Into Rock
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Author : Lianyang Zhang
language : en
Publisher:
Release Date : 1997
Analysis And Design Of Axially Loaded Drilled Shafts Socketed Into Rock written by Lianyang Zhang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.
Drilled Shaft Design And Construction Guidelines Manual
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Author : Lymon C. Reese
language : en
Publisher:
Release Date : 1977
Drilled Shaft Design And Construction Guidelines Manual 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 1977 with categories.
Analysis Of Axially And Laterally Loaded Rock Socketed Drilled Shafts With Steel Casings
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Author : Thomas G. Lewis
language : en
Publisher:
Release Date : 1991
Analysis Of Axially And Laterally Loaded Rock Socketed Drilled Shafts With Steel Casings written by Thomas G. Lewis 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.
Analy S Is And Design Of Drilled Shafts In Rock
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Author : Lianyang Zhang
language : en
Publisher:
Release Date : 1999
Analy S Is And Design Of Drilled Shafts In Rock written by Lianyang Zhang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.