Study on Dynamic Shear Resistance of RC Beams

Amornthep Somraj; Kazunori Fujikake; Bing Li

doi:10.4028/www.scientific.net/AMM.566.211

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Study on Dynamic Shear Resistance of RC Beams
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 566Study on Dynamic Shear Resistance of RC Beams

Study on Dynamic Shear Resistance of RC Beams

Abstract:

The aim of this study was to investigate the dynamic shear failure behavior of RC beams under rapid loading through an experimental study and also to set up a strut-and-tie model with loading rate effect to predict the dynamic shear resistance of RC beams. Thus, rapid loading test with 24 RC beams with a shear span-to-deep ratio of 1.9 was performed, in which shear reinforcement ratio and loading rate were variable. All of the RC beams exhibited shear compression failure. Although the shear resistance increases with increasing loading rate, the influence of loading rate on the shear resistance clearly depends on shear reinforcement ratio. The strut-and-tie model with loading rate effect was finally developed, in which the thickness of the compression strut was formulated to be increased with an increase in loading rate. The developed strut-and-tie model was good agreement with the experimental results.