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Experimental Evaluation on Shear Strength of High-Strength RC Deep Beams
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 Title & Authors
Experimental Evaluation on Shear Strength of High-Strength RC Deep Beams
Lee, Woo-Jin; Yoon, Seung-Joe; Kim, Seong-Soo;
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 Abstract
Recently, Appendix A of ACI 318∼02 Code introduced the Strut-and-Tie Model(STM) procedure in shear design of deep flexural members. The STM procedure is widely used in the design of concrete regions where the distribution of longitudinal strains is significantly nonlinear, such as deep beams, beams with large openings, corbels, and dapped-end beams. Experimental study included five high-strength reinforced concrete deep beams with different detailing schemes for the horizontal and vertical reinforcement. The specimens were designed as simply supported beams subjected to concentrated loads on the top face and supported on the bottom face. At failure, all specimen exhibited primary diagonal crack running from the support region to the point load. Specimens which had mechanical anchorages(terminators) gives better representation of the load-carrying mechanism than the specimen had standard 90-degree anchorage at failure in deep flexural members. Based on the test results, shear design procedures contained in the ACI 318-99 Code, Appendix A of the ACI 318-02 Code, CSA A23.3-94 Code and CIRIA Guide-2 were evaluated. The Shear design of ACI 318-99 Code, Appendix A of the ACI 318-02 Code and CIRIA Guide-2 shown to be conservative predictions from 10% to 36% in the shear strength of the single-span deep beam which was tested. ACI 318-99 Code was the lowest standard deviation.
 Keywords
high-strength concrete;deep beam;shear strength;strut-and-tie model;mechanical anchorage;
 Language
Korean
 Cited by
1.
프리스트레스트 콘크리트 깊은 보의 전단거동에 관한 해석적 연구,김태훈;김영진;신현목;

한국콘크리트학회논문집, 2010. vol.22. 4, pp.511-517 crossref(new window)
1.
Analytical Study on the Shear Behavior of Prestressed Concrete Deep Beams, Journal of the Korea Concrete Institute, 2010, 22, 4, 511  crossref(new windwow)
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