短肢剪力墙抗扭性能的试验研究

采用1∶2缩尺模型,设计了2个T形、2个L形短肢剪力墙试件。通过扭转加载试验,研究钢筋混凝土短肢剪力墙试件的变形—损伤—裂缝—屈服—破坏的全过程,分析压扭状态下短肢剪力墙的T-θ曲线。比较了短肢剪力墙受扭状态下开裂扭矩与极限扭矩的理论计算值和试验值。研究表明,短肢剪力墙压扭构件破坏形态为扭转破坏,延性较差,规范公式不能满足短肢剪力墙开裂扭矩与极限扭矩的计算。

Experimental Research on Torsional Performance of Reinforced Concrete Short-leg Shear Wall

This paper uses 1 ： 2 reduced scale model,2 T - shaped, 2 L - shaped short - leg shear wall specimens. Through the torsional test, the performance of concrete short - leg shear wall components was studied. The whole process of deforming - damaging - cracking - yielding - failure was observed during the test. T - 0curve was dis- cussed and torsion of specimen was calculated by theory, and experiment was compared. Test result shows that un- der the axial force, the short -leg shear wall on torsional performance is torsional failure pattern, and the ductility is not good. The theory of torsion is not fit to the experiment.