Download or read book Development of a Procedure to Determine Internal Stresses in Concrete Bridge Members written by Steven F. Hammerschmidt and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: With aging and deterioration of bridges, evaluation of existing conditions of their structural elements becomes vital to engineers and public officials when deciding how to repair or replace the structures. The ability to obtain necessary information on these conditions is often expensive and time consuming, especially for concrete bridges where the reinforcement is not available for inspection. Employing the surface-strain relief method could allow for accurate evaluation of aged or damaged prestressed members. The surface-strain relief method was developed to measure initial or pre-existing strains in a concrete member. It involves relieving the strain in the member and measuring the change in strain. Two methods were tested-one used a linear electrical-resistance strain gage and a three-inch-diameter diamond concrete core bit to cut around the gage, and the second method used a laser-speckle imaging device and a diamond cutting wheel to create notches perpendicular to the axis of maximum strain. Both methods measured the change in strain and related it to within 10 percent of the actual fse. The method of cutting notches and the laser-speckle imaging device provided a simpler method to be implemented in the field, while the coring method achieved a higher level of accuracy and precision.
Download or read book Techniques for Measuring Existing Long term Stresses in Prestressed Concrete Bridges written by and published by . This book was released on 1990 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Various stress measurement techniques were evaluated in this study. The evaluation included a state-of-the-art review of existing techniques and analytical studies of these techniques. Based on analytical results, the flat-jack direct stress measurement technique was evaluated in laboratory and field tests. Based on these tests, a manual of instruction was written to describe the equipment and procedures required to obtain reliable direct stress measurement. This is the Executive Summary which summarizes the findings of this research project.
Download or read book Development of Design Specifications and Commentary for Horizontally Curved Concrete Box girder Bridges written by Nutt, Redfield, and Valentine and published by Transportation Research Board. This book was released on 2008 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides specifications, commentary, and examples for the design of horizontally curved concrete box-girder highway bridges. The report details the development of the design procedures. Recommended Load and Resistance Factor Design (LRFD) specifications and design examples illustrating the application of the design methods and specifications are included in appendixes (available on the TRB website at http://trb.org/news/blurb_detail.asp?id=9596).
Download or read book Concrete Bridge Engineering written by R J Cope and published by CRC Press. This book was released on 1987-12-07 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nine chapters by a group of authors run from site investigation to assessment, repair, thermal response, structural types, and joints and substructures.
Download or read book Engineering for Structural Stability in Bridge Construction written by Federal Highway Federal Highway Administration and published by . This book was released on 2020-07-19 with total page 669 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual is intended to serve as a reference. It will provide technical information which will enable Manual users to perform the following activities:Describe typical erection practices for girder bridge superstructures and recognize critical construction stagesDiscuss typical practices for evaluating structural stability of girder bridge superstructures during early stages of erection and throughout bridge constructionExplain the basic concepts of stability and why it is important in bridge erection* Explain common techniques for performing advanced stability analysis along with their advantages and limitationsDescribe how differing construction sequences effect superstructure stabilityBe able to select appropriate loads, load combinations, and load factors for use in analyzing superstructure components during constructionBe able to analyze bridge members at various stages of erection* Develop erection plans that are safe and economical, and know what information is required and should be a part of those plansDescribe the differences between local, member and global (system) stability
Download or read book Advances and Developments in NDE Techniques for Concrete Structures written by John S. Popovics and published by ASCE Publications. This book was released on 2003-01-01 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Special issue of the Journal of Materials in Civil Engineering, May/June 2003, Volume 15, Issue 3. This special issue contains 11 papers presentingØØthe latest developments in the practical application of nondestructive evaluation (NDE) techniques to civil engineering materials and structures. Modern civil engineering structures incorporate complicated multimaterial components that require special monitoring through sophisticated NDE, which must be drawn from a range of physical phenomena. With a focus on cutting-edge techniques, several papers deal with nondestructive void and corrosion detection of embedded post-tensioned cables on concrete elements. Other papers present research findings on NDE techniques for steel cables, early-age and mature reinforced-concrete elements, and fiber-composite sheets, where ultrasound, magnetism, infrared thermography, acoustic emission, and radar phenomena are applied.
Download or read book Public Works for Water and Power Resources Development and Atomic Energy Commission Appropriations for Fiscal Year 1969 written by United States. Congress. Senate. Committee on Appropriations and published by . This book was released on 1968 with total page 1850 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Developments in Structural Form written by Rowland Mainstone and published by Routledge. This book was released on 2013-04-03 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the critically acclaimed first edition of this book, Mainstone offered a brilliant and highly original account of the structural developments that have made possible the achievements of architects and bridge builders throughout history. In this extensively revised and expanded new edition, now available in paperback, new insights and a full coverage of recent developments in both design and construction are incorporated. The book identifies features that distinguish the forms built by man from those shaped by nature and discusses the physical and other constraints on the choices that can be made. It then looks in turn at all the elementary forms - arches, domes, beams, slabs and the like - which combine into the more complex forms of complete structures, and at the different classes of the complete forms themselves. The development of each form is traced chronologically, but with an emphasis less on the chronology than on the problems that designers have continually faced in trying to serve new ends with limited means or to serve old ones in new ways. The book concludes with a chapter on the processes of design, showing how the designer's freedom of choice has been widened by a growing understanding of structural behaviour.
Download or read book AASHTO Maintenance Manual for Roadways and Bridges written by Kenneth A. Brewer and published by AASHTO. This book was released on 2007 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Highway Research Development Studies written by United States. Bureau of Public Roads. Office of Research and Development and published by . This book was released on 1968 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Examples for the Design of Structural Concrete with Strut and tie Models written by American Concrete Institute. Convention and published by . This book was released on 2002 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Prepared by members of ACI Subcommittee 445-1, Strut and Tie Models, for sessions at the Fall Convention in Phoenix, October 27 to November 1, 2002, and sponsored by Joint ACI-ASCE Committee 445, Shear and Torsion and ACI Committee 318-E, Shear and Torsion."
Download or read book Highway Research and Development Studies in Progress as of July 1 1969 Using Federal aid Research and Planning Funds written by and published by . This book was released on 1969 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reinforced Concrete Construction for Small Projects written by Ron Dean and published by Dog Ear Publishing. This book was released on 2017-11-30 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: By using the Working Stress Design system described in the text combined with other information in this book, a builder with a good knowledge of basic arithmetic and a pocket calculator can determine the sizing and placement of steel rebar within small concrete buildings, such as earth-sheltered homes. The book covers the design, assembly, and formwork required by concrete beams, elevated slabs, walls, footings, short columns, mat foundations, and soffits. Many of these components are impossible to build using plain (unreinforced) concrete.
Download or read book Nationally Coordinated Program of Highway Research Development and Technology Annual Progress Report Fiscal Year 1994 written by and published by . This book was released on 1995 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bridge Safety Maintenance Management Life Cycle Resilience and Sustainability written by Joan Ramon Casas and published by CRC Press. This book was released on 2022-06-27 with total page 2646 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridge Safety, Maintenance, Management, Life-Cycle, Resilience and Sustainability contains lectures and papers presented at the Eleventh International Conference on Bridge Maintenance, Safety and Management (IABMAS 2022, Barcelona, Spain, 11–15 July, 2022). This e-book contains the full papers of 322 contributions presented at IABMAS 2022, including the T.Y. Lin Lecture, 4 Keynote Lectures, and 317 technical papers from 36 countries all around the world. The contributions deal with the state-of-the-art as well as emerging concepts and innovative applications related to the main aspects of safety, maintenance, management, life-cycle, resilience, sustainability and technological innovations of bridges. Major topics include: advanced bridge design, construction and maintenance approaches, safety, reliability and risk evaluation, life-cycle management, life-cycle, resilience, sustainability, standardization, analytical models, bridge management systems, service life prediction, structural health monitoring, non-destructive testing and field testing, robustness and redundancy, durability enhancement, repair and rehabilitation, fatigue and corrosion, extreme loads, needs of bridge owners, whole life costing and investment for the future, financial planning and application of information and computer technology, big data analysis and artificial intelligence for bridges, among others. This volume provides both an up-to-date overview of the field of bridge engineering and significant contributions to the process of making more rational decisions on bridge safety, maintenance, management, life-cycle, resilience and sustainability of bridges for the purpose of enhancing the welfare of society. The volume serves as a valuable reference to all concerned with and/or involved in bridge structure and infrastructure systems, including students, researchers and practitioners from all areas of bridge engineering.
Download or read book Creep Shrinkage and Durability Mechanics of Concrete and Concrete Structures Two Volume Set written by Tada-aki Tanabe and published by CRC Press. This book was released on 2008-09-01 with total page 1552 pages. Available in PDF, EPUB and Kindle. Book excerpt: CREEP, SHRINKAGE AND DURABILITY MECHANICS OF CONCRETE AND CONCRETE STRUCTURES contains the keynote lectures, technical reports and contributed papers presented at the Eighth International Conference on Creep, Shrinkage and Durability of Concrete and Concrete Structures (CONCREEP8, Ise-shima, Japan, 30 September - 2 October 2008). The topics covered
