Simplified Shear Design of Structural Concrete Members
This report contains the findings of research performed to develop practical equations for design of shear reinforcement in reinforced and prestressed concrete bridge girders. Recommended specifications, commentary, and examples illustrating application of the specifications were also developed. The material in this report will be of immediate interest to bridge designers. The objective of this research was to supplement the Load and Resistance Factor Design (LRFD) methods for shear design with procedures providing a direct solution for transverse and longitudinal reinforcement of concrete structures of common proportions. This work focused on development of resistance equations that yield unique solutions with defined limits of applicability. The recommended equations are similar in format and application to the resistance equations currently found in the AASHTO Standard Specifications. The equations apply to conventional structure types such as reinforced concrete T-beams, prestressed concrete I girders continuous for live load, prestressed concrete box beams, cast-in-place post-tensioned box girders, hammerhead piers and footings, and multi-post reinforced concrete bents and footings. The recommendations for additions to the LRFD specifications apply to precast concrete strengths up to 18 ksi and cast-in-place concrete strengths up to 10 ksi.
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Availability:
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Supplemental Notes:
- Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
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Authors:
- Hawkins, Neil M
- Kuchma, Daniel A
- Mast, Robert F
- Marsh, M Lee
- Reineck, Karl-Heinz
- Publication Date: 2005
Language
- English
Media Info
- Media Type: Print
- Features: Figures; References; Tables;
- Pagination: 62p
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Serial:
- NCHRP Report
- Issue Number: 549
- Publisher: Transportation Research Board
- ISSN: 0077-5614
Subject/Index Terms
- TRT Terms: Bents; Box beams; Box girders; Bridge design; Cast in place concrete; Equations; Footings; Girders; Load and resistance factor design; Longitudinal reinforcement; Piers (Supports); Precast concrete; Prestressed concrete bridges; Reinforced concrete bridges; Shear reinforcement; Specifications; T beams; Transverse reinforcement
- Uncontrolled Terms: I girders; Shear design
- Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;
Filing Info
- Accession Number: 01015634
- Record Type: Publication
- ISBN: 0309088445
- Report/Paper Numbers: Project 12-61
- Files: TRIS, TRB, ATRI
- Created Date: Mar 29 2006 2:23PM