暗竖缝RC墙板的抗侧刚度分析

Analysis on lateral stiffness of RC walls with concealed vertical slits

为研究暗竖缝RC墙板(Concealed Vertical Slit Reinforced Concrete Walls,CVSW)的抗侧刚度,本文设计了9个系列24个CVSW墙板算例,通过ABAQUS有限元软件对其进行了参数化有限元分析,重点考察了墙板厚度、混凝土强度、暗竖缝厚度、缝间墙高宽比等设计参数对CVSW墙板初始抗侧刚度及刚度退化的影响。基于参数有限元分析结果,给出了CVSW墙板初始抗侧刚度的简化计算公式,并与算例结果进行对比,验证了公式的有效性。

In order to investigate the lateral stiffness of concealed vertical slit reinforced concrete infill walls(CVSW),twenty-four CVSW specimens with nine series were designed,and the parametric finite element(FE)analyses were conducted using ABAQUS software.The paper focuses the influence of relative design factors including the thickness of infill panel,concrete grade,thickness of concealed vertical slits,height-to-width ratio of slit wall on the lateral stiffness and stiffness degradation of CVSW specimens.According to the FE analytical results,the equations for calculating the lateral stiffness of CVSW specimens were proposed and compared with the results of FE results,and the accuracy of the equations was also verified.