Experimental study on shear behavior of reinforced concrete beams with web horizontal reinforcement

Abstract

In determining the shear capacity of reinforced concrete beams, current codes do not provide any calculation method to evaluate the influence of web horizontal reinforcement, although they exist as structural reinforcements (or skin reinforcement). The present paper comprises results of 11 reinforced concrete beams in an effort to investigate the influence of web horizontal reinforcement on the shear behavior of reinforced concrete beams. The primary design variables are the shear-span-depth ratio, different reinforcement ratio of stirrups and web horizontal reinforcement. Influence of web horizontal reinforcement on crack patterns and failure mode was studied. It was found that web horizontal reinforcement can increase the shear capacity of the beams and restrain growth of inclined cracks effectively. Test results are very valuable, as very few references of shear tests can be found focusing on the effect of web horizontal reinforcement on the shear capacity of the beams.

Keywords

reinforced concrete beam / shear strength / web horizontal reinforcement / experiments

References

[1] Joint ACI-ASCE Committee 445. Recent approaches to shear design of structural concrete. Journal of Structural Engineering, 1998, 124(12): 1375-1417

[2] ACI Committee 318. Building Code requirements for Structural Concrete (ACI 318-05) and Commentary (318R-05). American Concrete Institute, Farmington Hills, Mich, 2005

[3] European Committee for StandardizationUNE-ENV 1992-1-1:2004 Eurocode 2. Deisgn of concrete structures. Part 1-1: General Rules and Rules for Buildings. Brussels, 2004

[4] Collins M P, Mitchell D. Prestressed concrete Structures. Prentice Hall, Englewood Cliffs, N J, 1991

[5] Committee C S A. A23.3. Design of concrete structures (CSA A23.3-04). Canadian Standards Association, Mississauga, 2004

[6] AASHTO LRFD. Bridge Design Specification and Commentary, 3rd Edition, American Association of State Highway and Transportation Officials, Washington D C, 2004

[7] Choi K K, Sherif A G, Reda-Taha M M, Chung L. Shear Strength of Slender Reinforced Concrete Beams without Web Reinforcement: A Model using Fuzzy Set Theory. Engineering Structures, 2009, 31(3): 768-777

[8] Jung S, Kim K S. Knowledge-based prediction of shear strength of concrete beams without shear reinforcement. Engineering Structures, 2008, 30(6): 1515-1525

[9] Reineck K H, Kuchma D A, Kim K S, Marx S. Shear database for reinforced concrete members without shear reinforcement. ACI Structural Journal, 2003, 100(2): 240-249

[10] El-Chabib H, Nehdi M, Said A. Predicting shear capacity of NSC and HSC slender beams without stirrups using artificial intelligence. Computers and Concrete, 2005, 2(1): 79-96

[11] Cladera A, Mari A R. Experimental Study on High-strength Concrete Beams Failing in Shear. Engineering Structures, 2005, 27(10): 1519-1527

[12] Teoh B K, Mansur M A, Wee T H. Behaviour of high-strength concrete I-beams with low shear reinforcement. ACI Structural Journal, 2002, 99(3): 299-307

[13] Fournier B, Razaqpur A G, Abbas A, Fathifazl G, Foo S, Isgor O B. Shear Strength of Reinforced Recycled Concrete Beams with Stirrups. Magazine of Concrete Research, 2010, 62(10): 685-699

[14] Ritter W. Die Bauweise Hennebique. Switzerland: Schweizerische Bauzeitung, Switzerland1899

[15] Mörsch E. Concrete-Steel Construction (Der Eisenbetonbau). English translation of the 3rd German edition, McGraw-Hill Book Co., New work. 1909.

[16] JTG D62-2004 Code for Design Highway Reinforced Concrete and Prestressed Concrete Bridges and Culverts. Beijing: China Communications Press, Beijing, 2004 (in Chinese)

[17] Bentz E C. Sectional analysis of reinforced concrete members. Dissertation for the Doctoral Degree. Toronto: University of Toronto, 2000

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Higher Education Press and Springer-Verlag Berlin Heidelberg