Shear strength model of shearcritical reinforced concrete columns
YU Bo,WU Ranli,CHEN Bing,TAO Boxiong
1. Key Laboratory of Engineering Disaster Prevention and Structural Safety of China Ministry of Education, Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, School of Civil Engineering and Architecture, Guangxi University, Guangxi Nanning, 530004, China
Abstract：In order to overcome the disadvantages of traditional modes which cannot take into account the influence of axial load ratio and need to introduce empirical corrected factor of displacement ductility, an improved shear strength model for shearcritical reinforced concrete (RC) column was proposed. Firstly, an improved shear strength model for RC columns which takes into consideration the influences of axial load ratio as well as the deformation compatibility condition of variable angle truss-arch model was established based on the critical crack angle model that takes into account influence of axial load ratio as well as the deformation compatibility condition of the variable angle truss-arch model. Then the influence of axial load ratio on the shear strength of shearcritical RC columns was discussed. The proposed model overcomes the disadvantages of traditional models. Finally, the applicability and accuracy of the proposed model were validated by comparing with the experimental data and existed models.
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