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

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Acknowledgements

This experimental work was carried out at the Structural Laboratory of Department of Bridge Engineering of Tongji University in Shanghai, with financial support from the Ministry of Communications of the People’s Republic of China for Science & Technology Project of West China Communications Building through research project Grant No. 2004 318 822 14 (Design and Construction of Externally Prestressed Bridges).

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2014 Higher Education Press and Springer-Verlag Berlin Heidelberg