Simplified Shear Design of Structural Concrete Members

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Simplified Shear Design of Structural Concrete Members

Author: Hawkins, Neil M | Size: 3.16 MB | Format: PDF | Quality: Original preprint | Publisher: Transportation Research Board | Year: 2005 | pages: 62 | ISBN: 0309088445

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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