Design Of Rock Socketed Drilled Shafts
DOWNLOAD
Download Design Of Rock Socketed Drilled Shafts PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Design Of Rock Socketed Drilled Shafts book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Rock Socketed Shafts For Highway Structure Foundations
DOWNLOAD
Author : John P. Turner
language : en
Publisher: Transportation Research Board
Release Date : 2006
Rock Socketed Shafts For Highway Structure Foundations written by John P. Turner and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Bridges categories.
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 360: Rock-Socketed Shafts for Highway Structure Foundations explores current practices pertaining to each step of the design process, along with the limitations; identifies emerging and promising technologies; examines the principal challenges in advancing the state of the practice; and investigates future developments and potential improvements in the use and design of rock-socketed shafts.
Analysis Of Laterally Loaded Drilled Shafts In Rock
DOWNLOAD
Author : Ke Yang
language : en
Publisher:
Release Date : 2006
Analysis Of Laterally Loaded Drilled Shafts In Rock written by Ke Yang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Lateral loads categories.
Drilled shafts socketed into rock are widely used as foundations for bridges and other important structures. Rock-socketed drilled shafts are also used to stabilize a landslide. The main loads applied on the drilled shafts are axial compressive or uplift loads as well as lateral loads with accompanying moments. Although there exist several analysis and design methods especially for rock-socketed drilled shafts under lateral loading, these methods were developed with assumptions without actual validations with field load test results. Some of the methods have been found to provide unsafe designs when compared to recently available field test data. Therefore, there is a need to develop a more rational design approach for laterally loaded drilled shafts socketed in rock. A hyperbolic non-linear p-y criterion for rock is developed in this study that can be used in conjunction with existing computer programs, such as COM624P, LPILE, and FBPIER, to predict the deflection, moment, and shear responses of a shaft under the applied lateral loads. Considerations for the effects of joints and discontinuities on the rock mass modulus and strength are included in the p-y criterion. Evaluations based on comparisons between the predicted and measured responses of full-scale lateral load tests on fully instrumented drilled shafts have shown the applicability of the proposed p-y criterion and the associated methods for determining the required input of rock parameters. In addition to the development of a hyperbolic p-y criterion for rock, a method for predicting lateral capacities of drilled shafts in rock and/or soils is developed for assessing the safety margin of the designed shafts against the design loads. A computer program LCPILE is developed using VC++ to facilitate computations. An elastic solution based on a variational approach is also developed for determining drilled shaft elastic deflection due to applied lateral loads in a two-layer soil layer system. The computational algorithm was coded in a Mathematical file for easy application. Finally, Briaud's method for deriving p-y curves of rock from pressuremeter or dilatometer test results is evaluated using available field test data. A modification to the Briaud's method is recommended for applications in rocks.
Landslide Stabilization Using A Single Row Of Rock Socketed Drilled Shafts And Analysis Of Laterally Loaded Drilled Shafts Using Shaft Deflection Data
DOWNLOAD
Author : Mohammad M. Yamin
language : en
Publisher:
Release Date : 2007
Landslide Stabilization Using A Single Row Of Rock Socketed Drilled Shafts And Analysis Of Laterally Loaded Drilled Shafts Using Shaft Deflection Data written by Mohammad M. Yamin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Landslides categories.
"An accurate and practical methodology for stability analysis and design of drilled shafts reinforced slopes was developed utilizing limiting equilibrium method of slices. Complex soil stratifications and general failure slip surfases can be handled in the developed method. The effect of soil arching due to the presence of the drilled shafts was accounted for by using a load transfer factor. The numerical values of the load transfer factor were developed based on 3-D FEM parametric study results. Many of the design variables controlling the slope/shaft systems, such: drilled shafts size, shafts location, shaft fixity (the necessary rock-socket length), and the required spacing between the drilled shafts to prevent soil from flowing around the shafts can be successfully determined from the developed method. The optimum location where the drilled shafts could be placed within the sliding soil mass so that the cost associated with the landslide repair using the drilled shafts is minimized can be searched for and determined from the developed methodology. From geotechnical point of view, the global factor of safety for slope/shaft systems can be determined. From structural point of view, the forces acting on the stabilizing drilled shafts due to the moving ground can be successfully estimated. In addition to the developed design methodology, Real-time instrumentation and monitoring were carried out for three landslide sites in the Southern part of Ohio. Various types of instruments were extensively installed inside the stabilizing shafts and the surrounding soils to monitor and better understand the behavior of slope/shaft systems. The UA Slope program developed by Dr. Robert Liang in cooperation with ODOT and FHWA has been used in designing these landslides. The field instrumentation and monitoring processes have provided excellent and unique information on the lateral responses of shafts undergoing slope movements. Also, the results of the instrumented cases have provided that the structural design (moments, shear, lateral deflection, and shaft tip fixity) of the shafts are overestimated (i.e., estimated forces acting on the shafts are high), and the geotechnical design (FS of slope/shaft system: movement and rate of movement) is achieved in two case studies but not fully achieved for the third case. On the other hand, in an effort to develop an efficient analytical method for analysis of laterally loaded drilled shafts using only lateral shaft deflection data, numerical procedures were proposed based on the principle of superposition. The lateral shaft deflections along the shaft length due to superposition of the lateral applied load to the drilled shaft were added together to establish the compatibility equations that govern the lateral behavior of the drilled shaft system. The compatibility equations allow for the determination of the net applied loads to the drilled shaft responsible for specific amount of shaft deflections. Once the loads were determined, basic equilibrium equations were applied to calculate shear forces and bending moments along the shaft length. A computer program was developed implementing the proposed numerical procedures to facilitate numerical computations. Many laterally loaded drilled shaft examples were described and used to verify the validity of the developed method. Included in the cases for validation were two actual full-scale drilled shafts at Jefferson County: (1) landslide repair using drilled shafts; and (2) lateral load test, were demonstrated."--Abstract.
Drilled Shafts In Rock
DOWNLOAD
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
Analysis And Design Of Drilled Shaft Foundations Socketed Into Rock
DOWNLOAD
Author : J. P. Carter
language : en
Publisher:
Release Date : 1988
Analysis And Design Of Drilled Shaft Foundations Socketed Into Rock written by J. P. Carter and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Electric lines categories.
Analysis And Design Of Drilled Shafts Socketed Into Soft Rock
DOWNLOAD
Author : Khaled M. Hassan
language : en
Publisher:
Release Date : 1994
Analysis And Design Of Drilled Shafts Socketed Into Soft Rock written by Khaled M. Hassan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Boring categories.
Design Of Rock Socketed Drilled Shafts
DOWNLOAD
Author : Jamal Nusairat
language : en
Publisher:
Release Date : 2006
Design Of Rock Socketed Drilled Shafts written by Jamal Nusairat and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Bridges categories.
This project was aimed at evaluating and developing design methods for laterally loaded drilled shafts socketed in rock. Five lateral load tests on rock socketed drilled shafts with full range of instrumentation were conducted in Ohio. Detailed instrumentation included the use of vibrating wire strain gages, inclinometers, dial gages, and load cells. P-y curves representing site-specific lateral shaft-rock interaction were deduced from strain data. Field testing included the use of a borehole pressuremeter/dilatometer to obtain measurements that were correlated with rock mass strength and deformation parameters as well as with p-y curves. A comparison was made between the baseline p-y curves deduced from strain data of lateral load tests, the p-y curves predicted by using Reese's interim criterion, and the p-y curves from the pressuremeter tests in rock. A new hyperbolic p-y criterion for rock is proposed based on the field test data and extensive theoretical work. Validation of the proposed p-y criterion of rock was carried out by comparing the predictions of shaft deflections and bending moments using the hyperbolic p-y criterion against actual lateral load tests results. Based on the findings of this study, a complete solution for the design of drilled shafts socketed in rock or intermediate geomaterials under lateral loads is provided.
Drilled Shaft Design And Construction Guidelines Manual
DOWNLOAD
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.
Drilled Shaft Design And Construction Guidelines Manual Construction Procedures And Design For Axial Loading
DOWNLOAD
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 Shafts
DOWNLOAD
Author : National Highway Institute (U.S.)
language : en
Publisher:
Release Date : 1988
Drilled Shafts written by National Highway Institute (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Earthwork categories.
This document was written as a resource for participants in a short course covering the topic of construction and design of drilled shaft foundations for bridges and other structures. It is the second edition of a Federal Highway Administration workbook on construction and design of drilled shafts. The first edition was written in 1988 (FHWA-SA-HI-88-042). While introductory material from the 1988 edition was retained, the emphasis in this document is on providing relatively comprehensive information for engineers who already have some experience with drilled shaft construction and/or design. The initial chapters cover an overview of the characteristics of drilled shafts, site investigations for drilled shafts (to collect information for both construction and design), and details of drilled shaft construction. These chapters are followed by several chapters on the design of drilled shafts in soil and rock for both axial and lateral loading, with examples. Both allowable stress design and load and resistance factor design principles are addressed. Details of design calculations procedures are provided in the appendices.