【摘要】 目的研究钢筋混凝土低剪力墙在低周期反复荷载作用下受力性能.方法将剪力墙的横截面和配筋保持不变,只改变剪力墙的轴向荷载(轴压比),对3片钢筋混凝土低剪力墙采用低周反复加载方式进行了试验,比较不同轴压比下剪力墙的破坏形态、破坏程度,以及对试验现象进行分析.结果 3个试件剪跨比较小,没有明显的屈服荷载和明显的下降段,滞回能力差,循环次数少,延性差,耗能能力差.结论在对钢筋混凝土低剪力墙恢复力曲线模型进行选取时,建议采用坡顶刚度退化二线型模型或坡顶刚度退化三线型模型.更多还原

【Abstract】 This paper aims to study the bearing capability of shear walls made of reinforced concrete under the circumstance of low cyclic lateral loading.Quasi-static test of three reinforced concrete shear walls are carried out under cyclic lateral loading,while keeping reinforced sections unchanged,changing axial load,so that the relationship between force and displacement could be obtained.By comparing the destructed behaviors and grades of the walls under different axial compression ratio,and shear span ratio based on the analysis of test and hysteretic curve,it can be concluded that there is not apparent yield point and decline stage for the short shear walls,with the poor hysteresis and ductility performance,low cycle frequency,inferiror extension ability,and bad energy consuming capability.Three-linear model of sloping stiffness degradation and two-linear model of sloping stiffness degradation are suggested for RC short shear walls.更多还原