【摘要】 以建立基于抗剪抵抗机构和破坏模式的钢筋混凝土(RC)开洞剪力墙的极限承载力分析模型为目的,将开洞剪力墙的抗剪机构简化为:剪力墙洞口左侧倾角为θ2的斜向混凝土压杆a2、洞口右侧倾角为θ1的斜向混凝土压杆a1、混凝土压杆a1和a2范围内的纵横向分布钢筋四部分组成。基于剪力墙的压杆抵抗机构,推导了RC开洞剪力墙的极限承载力计算公式,并编制了计算程序,对20片不同配筋、不同几何尺寸和受力状态的RC开洞剪力墙进行了极限承载力分析,理论计算和试验结果吻合较好,可以得出该分析模型能够较好地反映RC开洞剪力墙的极限承载力特性,可供RC开洞剪力墙抗剪承载力验算参考。更多还原

【Abstract】 The purpose is to develop,based on the failure modes and shear resistant mechanism,an analysis model to evaluate the ultimate bearing capacity of RC shear walls with an opening.According to the failure mode and shear resistant mechanism,a RC shear wall with an opening can be simplified as a composition of four components:the concrete struts a2 and a1 with inclination angles θ2 and θ1 on the left and right of the opening,and the longitudinal and lateral steels within the range of concrete struts a1 and a2,respectively.The calculation equations for ultimate bearing capacity are provided from shear mechanism analysis,and a computer program is developed to evaluate the bearing capacity of RC shear walls with an opening.The ultimate bearing capacity of 20 RC shear walls with an opening is analyzed,and the calculation results are in good agreement with test data.Therefore,it can be concluded that the analysis model verified in this study can be used to evaluate the ultimate bearing capacity of RC shear walls with an opening.更多还原