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Design Procedures Of Retrofitted Bridge Rail
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Book Synopsis Design Procedures of Retrofitted Bridge Rail by : Richard Lee Wood
Download or read book Design Procedures of Retrofitted Bridge Rail written by Richard Lee Wood and published by . This book was released on 2016 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The use of shallow embedment anchors in concrete is essential for retrofit applications; however, the combination of steel anchors, chemical adhesive, and concrete acting as a single tensile mechanism creates uncertainties in anchor strength and failure modes. Difference in concrete comprehensive strengths and in specifications of adhesives between manufacturers increases uncertainty further. In addition to these issues, prior research conducted by others examines the behavior of such anchors with respect to cracked versus uncracked concrete, partial bonding of the embedded length, and strength reductions due to anchor proximity to edges. White it is understood, anchors require a proper installation detail, the goal of this research is to understand the failure mechanisms and capacity when such conditions cannot be met" (page 15).
Book Synopsis Bridge Rail Design Procedure by : Emad Badiee
Download or read book Bridge Rail Design Procedure written by Emad Badiee and published by . This book was released on 2014 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: The AASHTO Bridge Specifications recommend a yield line theory analysis to determine the structural capacity of concrete bridge railing based on static strength of concrete. However, this analysis technique has been shown to significantly underestimate the capacity of concrete bridge rails to withstand high speed truck impacts. Traditionally this shortcoming has been mitigated by artificial reductions in bridge rail design loads implemented into the design specifications. Fear of litigation associated with failure of a bridge rail to contain and redirect an errant vehicle has made continuing this policy unacceptable for most state highway agencies. On the other hand, existing barrier design guidelines contained in the Bridge Specifications are based upon National Cooperative Highway Research Program (NCHRP) Report 350. This document has been superseded by the Manual for Assessing Safety Hardware (MASH). The updated performance guidelines incorporate heavier vehicles, higher impact angles, and in one case, higher impact speeds. Full-scale crash testing has shown that the new testing criteria will require stronger and taller barriers. One study has attempted to generate new height and design load requirements for inclusion in the updated Bridge Design Specifications. The load recommended for implementation proved to be extremely high and was not well received by AASHTO's T7 committee on Guardrails and Bridge Rails. Thus, there is a national need for a more thorough evaluation of bridge rail design loads and minimum barrier heights required to meet the MASH guidelines. This thesis presents an improved method based on modified Yield Line Theory and dynamic strength of concrete to estimate the design impact loads to realistic levels without adjustment of the underlying analysis technique. The net effect of applying the new method to the design would be large decreases in the size and cost of bridge railing necessary to withstand the elevated loads. The objective of the research proposed herein includes: (1) Developing improved methods for estimating the structural capacity of bridge rails and cantilevered deck systems based on dynamic strength of concrete, and including the contribution of deflection of deck overhang, moment of inertia of the barrier and deck overhang sections, and mass of the vehicle and barrier and (2) Identifying appropriate design loads for use in the new methods that are representative of MASH recommended crash test conditions TL-2 through TL-5.
Book Synopsis Innovative Bridge Design Handbook by : Alessio Pipinato
Download or read book Innovative Bridge Design Handbook written by Alessio Pipinato and published by Elsevier. This book was released on 2021-09-08 with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt: Innovative Bridge Design Handbook: Construction, Rehabilitation, and Maintenance, Second Edition, brings together the essentials of bridge engineering across design, assessment, research and construction. Written by an international group of experts, each chapter is divided into two parts: the first covers design issues, while the second presents current research into the innovative design approaches used across the world. This new edition includes new topics such as foot bridges, new materials in bridge engineering and soil-foundation structure interaction. All chapters have been updated to include the latest concepts in design, construction, and maintenance to reduce project cost, increase structural safety, and maximize durability. Code and standard references have been updated. Completely revised and updated with the latest in bridge engineering and design Provides detailed design procedures for specific bridges with solved examples Presents structural analysis including numerical methods (FEM), dynamics, risk and reliability, and innovative structural typologies
Book Synopsis Analysis and Design of Railway Bridges by : Mohiuddin Ali Khan
Download or read book Analysis and Design of Railway Bridges written by Mohiuddin Ali Khan and published by Butterworth-Heinemann. This book was released on 2029-08-18 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analysis and Design of Railway Bridges brings together the analytical tools and design methods necessary to accurately interpret the complex design requirements in the selection process and construction of robust railway bridges. When designing railway bridges, design engineers must face a number of unique structural challenges such as: dead load of the structure, live loads from the carried, frequency of traffic, and dynamic components of the traffic such as impact, centrifugal, lateral, and longitudinal forces. This means the use of complex modeling tools for the selection of proper design criteria. This reference provides a clear and rigorous exposition of the various codes which govern design including: American Association of State Highway and Transportation Officials, American Railroad Engineering and Maintenance-of-Way Association, Federal Highway Administration and the Eurocode for dynamic factor, dynamic loading and load combinations, bridge parameters, modelling of excitation and dynamic behaviour, and verification for fatigue. Explains codes including: American Association of State Highway and Transportation Officials, American Railroad Engineering and Maintenance-of-Way Association, Federal Highway Administration, and the Eurocode Addresses the unique aspects of railway bridge modeling such as: bridge and train modeling techniques, substructure details, structural steel details, prestressed concrete details, and bridge railing and approach rail details Includes design and analysis methods and calculations as well as applications and solved examples Provides the analytical tools and design methods necessary to interpret complex design requirements
Book Synopsis Abatement of Seismic Hazards to Lifelines: Proceedings of a Workshop on Development of an Action Plan by :
Download or read book Abatement of Seismic Hazards to Lifelines: Proceedings of a Workshop on Development of an Action Plan written by and published by . This book was released on 1987 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bridge Rail Designs and Performance Standards: Research report by :
Download or read book Bridge Rail Designs and Performance Standards: Research report written by and published by . This book was released on 1987 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This project evaluated bridge railings. State bridge rail designs submitted to the Federal Highway Administration (FHWA) were rated and the best of each type were selected for crash test evaluation. When necessary, the designs were improved and retested. Most of the crash tests were conducted with 4500-lb (2025-kg) cars at 60 mph (95 km/h) and a 25-degree angle and 1800-lb (800-kg) cars at 60 mph (95 km/h) and a 20-degree angle. Performance standards are proposed in 1986 are presented, along with bridge railing geometric design considerations to minimize vehicle snagging. Design drawings of the successfully tested bridge rails are included"--Technical report documentation page
Book Synopsis Design Guidelines for Assessment Retrofit and Repair of Bridges for Seismic Performance by : M. J. N Priestley
Download or read book Design Guidelines for Assessment Retrofit and Repair of Bridges for Seismic Performance written by M. J. N Priestley and published by . This book was released on 1992 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :American Association of State Highway and Transportation Officials. Task Force for Roadside Safety Publisher :AASHTO ISBN 13 :1560515090 Total Pages :345 pages Book Rating :4.5/5 (65 download)
Book Synopsis Roadside Design Guide by : American Association of State Highway and Transportation Officials. Task Force for Roadside Safety
Download or read book Roadside Design Guide written by American Association of State Highway and Transportation Officials. Task Force for Roadside Safety and published by AASHTO. This book was released on 2011 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Roadside Design Guide presents a synthesis of current information and operating practices related to roadside safety and is written in dual units-metric and U.S. Customary. This book is a guide. It is not a standard, nor is it a design policy. It is intended to use as a resource document from which individual highway agencies can develop standards and policies. Although much of the material in the guide can be considered universal in its application, several recommendations are subjective in nature and may need modification to fit local conditions. However, it is important that significant deviations from the guide be based on operational experience and objective analysis. The 2011 edition of the AASHTO Roadside Design Guide has been updated to include hardware that has met the evaluation criteria contained in the National Cooperative Highway Research Program (NCHRP) Report 350: Recommended Procedures for the Safety Performance Evaluation of Highway Features and begins to detail the most current evaluation criteria contained under the Manual for Assessing Safety Hardware, 2009 (MASH). For the most part, roadside hardware tested and accepted under older guidelines that are no longer applicable has not been excluded in this edition." -- AASHTO website.
Author :United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations Publisher : ISBN 13 : Total Pages :1198 pages Book Rating :4.0/5 (18 download)
Book Synopsis Department of Transportation and Related Agencies Appropriations for 1994 by : United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations
Download or read book Department of Transportation and Related Agencies Appropriations for 1994 written by United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations and published by . This book was released on 1993 with total page 1198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recent Developments In Bridge Engineering by : K.M. Mahmoud
Download or read book Recent Developments In Bridge Engineering written by K.M. Mahmoud and published by CRC Press. This book was released on 2003-01-01 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains a selected number of papers that were presented at the Second New York City Bridge Conference organized by the Bridge Engineering Association. It represents the state-of-the-art papers from different countries on a wide spectrum of topics in bridge engineering.
Book Synopsis FHWA Nationally Coordinated Program of Highway Research, Development, and Technology. Annual Progress Report. Fiscal Year 1991 by :
Download or read book FHWA Nationally Coordinated Program of Highway Research, Development, and Technology. Annual Progress Report. Fiscal Year 1991 written by and published by . This book was released on 1991 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Repair/retrofit Anchorage Designs for Bridge Rails by : William F. Williams
Download or read book Repair/retrofit Anchorage Designs for Bridge Rails written by William F. Williams and published by . This book was released on 2007 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project focused on developing alternative rail anchorage systems for the T501 and T203 bridge rail systems. The project considered only epoxy adhesive anchoring systems for each of these railings, for use in repair and retrofit situations. Strength data on the existing T501R "bolt-through" retrofit design is not well-defined. A tested retrofit design for the T203 did not exist at the time of starting this project. During this project, documented data on the strength characteristics of the conventionally anchored T501 and T203 bridge rail systems were obtained. These data were analyzed and used to develop alternate rail anchorage systems for both the T501 and T203 bridge rails. Long-term durability of epoxy anchoring systems was also considered based on information provided by the epoxy adhesive manufacturer
Book Synopsis Abatement of Seismic Hazards to Lifelines: Papers on transportation lifelines and special workshop presentations by :
Download or read book Abatement of Seismic Hazards to Lifelines: Papers on transportation lifelines and special workshop presentations written by and published by . This book was released on 1987 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Carquinez Bridge Project, Replace/retrofit the Westbound I-80 Between Cummings Skyway and CA-29, Contra Costa County, Solano County by :
Download or read book Carquinez Bridge Project, Replace/retrofit the Westbound I-80 Between Cummings Skyway and CA-29, Contra Costa County, Solano County written by and published by . This book was released on 1998 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Track Design Handbook for Light Rail Transit by :
Download or read book Track Design Handbook for Light Rail Transit written by and published by Transportation Research Board. This book was released on 2012 with total page 695 pages. Available in PDF, EPUB and Kindle. Book excerpt: TCRP report 155 provides guidelines and descriptions for the design of various common types of light rail transit (LRT) track. The track structure types include ballasted track, direct fixation ("ballastless") track, and embedded track. The report considers the characteristics and interfaces of vehicle wheels and rail, tracks and wheel gauges, rail sections, alignments, speeds, and track moduli. The report includes chapters on vehicles, alignment, track structures, track components, special track work, aerial structures/bridges, corrosion control, noise and vibration, signals, traction power, and the integration of LRT track into urban streets.
Book Synopsis Testing of new bridge rail and transition designs: Appendix I: 42-in (1.07-m) concrete parapet bridge railing by : Eugene Buth
Download or read book Testing of new bridge rail and transition designs: Appendix I: 42-in (1.07-m) concrete parapet bridge railing written by Eugene Buth and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this study were to develop safer bridge rail and transition designs and to improve design guidelines. Ten bridge railings and two transitions were designed, tested, and evaluated in accordance with American Association of State Highway and Transportation Officials (AASHTO) requirements. The railings were designed using ultimate strength procedures and collision forces from earlier research. Design procedures, railing designs, and test results are presented. All designs demonstrated acceptable collision performance.
Book Synopsis Bridge Engineering Handbook by : Wai-Fah Chen
Download or read book Bridge Engineering Handbook written by Wai-Fah Chen and published by CRC Press. This book was released on 2014-01-24 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over 140 experts, 14 countries, and 89 chapters are represented in the second edition of the Bridge Engineering Handbook. This extensive collection highlights bridge engineering specimens from around the world, contains detailed information on bridge engineering, and thoroughly explains the concepts and practical applications surrounding the subjec
