建筑结构学报2013，Vol.34Issue(8)：126-134,157,10.
钢筋混凝土Z形截面双向受剪柱抗震性能试验研究
Experimental study on seismic behavior of Z-shaped reinforced concrete columns subjected to biaxial shearing
摘要
Abstract
In order to study the seismic performance of Z-shaped reinforced concrete columns subjected to biaxial shearing,quasi-static tests were carried out on four 1/2 scale specimens.The effects of the horizontal loading directions (α =0°,45°,90°,135°) were studied.And the failure characteristics,mechanical behaviors of Z-shaped columns were researched.The loading-displacement hysteretic loops and skeleton curves,load bearing capacity,displacement ductility,rigidity degradation and energy dissipation capacity were analyzed.Test results indicate four types of failure patterns can be seen from the test specimens,including shear-bending failure,bending failure,shearbond failure,shear compression failure,and the shear failure ductility is very poor.It shows that the influences of the lateral bevel loads on the shear strength of Z-shaped RC frame columns can be approximately described by ellipse law.The capacity of energy dissipation is maximized in the case of 45° loading angle,and the variation is small when the loading angles are 0°and 135°.A calculation method of Z-shaped reinforced concrete columns subjected to biaxial shear beating capacity was proposed.According to the proposed method,totally 22 sets of test data from the tests presented in this paper and other previous tests were used for the calculation.The calculation results are in good agreement with test values.关键词
钢筋混凝土Z形截面柱/双向受剪/拟静力试验/抗震性能Key words
Z-shaped section RC column/ biaxial shearing/ quasi-static test/ seismic behavior分类
建筑与水利引用本文复制引用
崔钦淑,杨俊杰,康谷贻..钢筋混凝土Z形截面双向受剪柱抗震性能试验研究[J].建筑结构学报,2013,34(8):126-134,157,10.基金项目
国家自然科学基金项目(50879079). （50879079）
