Download or read book Drilled Shaft Design for Sound Barrier Walls Signs and Signals written by and published by . This book was released on 2004 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Drilled Shaft Design for Sound Barrier Walls Signs and Signals written by and published by . This book was released on 2004 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design of Rock Socketed Drilled Shafts written by Jamal Nusairat and published by . This book was released on 2006 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Drilled Shaft Manual Structural analysis and design for lateral loading by written by Lymon C. Reese and published by . This book was released on 1977 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Drilled Shaft Manual Construction procedures and design for axial loading written by Lymon C. Reese and published by . This book was released on 1977 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Drilled Shaft Design and Construction Guidelines Manual written by Lymon C. Reese and published by . This book was released on 1977 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Drilled Shaft Design and Construction Guidelines Manual Construction procedures and design for axial loading written by Lymon C. Reese and published by . This book was released on 1977 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Drilled Shafts written by National Highway Institute (U.S.) and published by . This book was released on 1988 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Deflections and Bending Moments in Drilled Shaft Sound Wall Foundations Under Working Load Conditions written by Robert L. Mokwa and published by . This book was released on 1997 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Drilled Shaft Design and Construction Guidelines Manual Reese L C and Allen J D Structural analysis and design for lateral loading written by Lymon C. Reese and published by . This book was released on 1977 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Drilled Shafts written by Michael W. O'Neill and published by . This book was released on 1999 with total page 758 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Overview for Design and Construction of Drilled Shafts in Cohesive Soils written by Lawrence D. Johnson and published by . This book was released on 1981 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Download or read book Design Optimization of Drilled Shafts written by Charles C. Armour and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the early twentieth century, the implementation of drilled shafts has transformed the face of foundation design of bridges and buildings (Grader 2012). These major components of foundations began in the 1920’s near the Great Lakes area of Chicago and have been competing with driven pile technique since the 1960’s (Coduto 2001). Currently, drilled shafts are more implemented with major bridge constructions and building projects (Brown 2007). With the popularity of both drilled shafts and driven piles, each come with a set of advantages for each. Drilled shafts appear to be the most cost effective option to operate the equipment necessary for completion, and they give the ability to change the diameter or shaft length to address the unforeseen changes in soil conditions which are be monitored during the drilling process. Drilled shaft processes have demonstrated the ability to penetrate through soils containing cobbles and boulders and thus give the ability to be socketed into bedrock. During the construction process, drilled shafts reduce the high noise level and vibration compared to that with driven piles. Driven piles, however, have some advantages; for example, driven piles allow for consolidation of soils laterally along the pile length and the tip together. This consolidation allows for the increase in the effective stress of the soil, that can increase skin friction and end bearing factors. The driven piles also give redundancy to the foundation system; where drilled shafts may have one massive pile, a driven pile system will have many piles (Coduto 2001). While using the considerations and ideas mentioned previously, the purpose of this study is to use a soil-pile interaction with a non-linear finite element model in connection with an advanced optimization method with which to develop the most economical drilled shaft design. The application of a non-linear finite element model in consideration with an advanced optimization method and various FORTRAN coded soil characterizations has not been determined to be the best economical drilled shaft design. Therefore, this study required a different direction and consideration than was used before. Also, this report does not reflect long-term analysis of drilled shafts. However, a short-term analysis is considered to be the controlling condition. A long-term analysis of the drilled must be completed to determine the critical condition.
Download or read book Drilled Shaft Design and Construction Guidelines Manual written by Lymon C. Reese and published by . This book was released on 1979 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ADSC Drilled Shaft Foundation Symposium written by Association of Drilled Shaft Contractors (U.S.) and published by . This book was released on 1998 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Torsional Load Transfer for Drilled Shaft Foundations written by Armin Wilhelm Stuedlein and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite the prevalence of the use of drilled shafts for the support of traffic signal and signs along state highways, relatively little is known about the torsional load transfer between the structure and soil providing its support. A review of literature indicated that just three full-scale torsional loading test series have been conducted, and these did not report the observation of the torsional load transfer. To help address this gap in knowledge, two instrumented test shafts, which were designed to support signal pole type SM3 based on ODOT Standard Drawing TM653, were constructed to evaluate the torsional capacity and load transfer of these shafts at full-scale at the Oregon State University (OSU) Geotechnical Engineering Field Research Site (GEFRS). Two shafts were constructed: one shaft designated as the torsion test drilled shaft with production base (TDS) was constructed using the dry method, whereas another shaft designated as the torsional drilled shaft with frictionless base (TDSFB) was constructed by placing bentonite chips the bottom of the cavity to create near-zero base shear condition. Monotonic, quasi-static and cyclic loading tests were performed using two hydraulic actuators and a displacement couple. The imposed rotation and corresponding torque was monitored using stringpotentiometers and load cells, respectively. Embedded strain gages were installed on both test shafts over five depths to measure shear strains and reveal the load transfer of the drilled shafts in torsion. The torsional load transfer is back-calculated from the instrumentation data and described in detail. Existing design procedures for predicting torsional capacity of drilled shafts were investigated. The CDOT Design Method and the Florida District 7 Method, both of which can treat layered cohesive and cohesionless soils, were selected to estimate the torsional capacities of the test shafts and compared with the test results. However, these design methods appeared to over- and under-predict the torsional capacity, respectively, indicating the need for the development of improved methods for assessing torsional capacity.
