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为研究预制混凝土空心模剪力墙上下层插筋连接的抗震性能,校验所取的搭接长度是否满足要求,对比不同的插筋形式,完成了4个预制混凝土空心模剪力墙试件的拟静力试验和2个试件的静力试验。试验结果表明:所有试件均为受弯破坏,承载力试验值与规范预测值的比值平均为1.31,试件极限位移角为1/85~1/55;试件根部水平滑移较小,对墙体整体抗震性能影响较小;由插筋及竖向分布筋的应变曲线、应变分布及试件整体抗震性能可知,采用的插筋连接及其搭接长度可以有效传递钢筋应力,满足抗震要求;采用双排插筋的试件抗震性能略好于采用单排插筋的试件。
In order to study the seismic performance of prestressed concrete hollow core shear walls, the length of lap joint was checked to see if they meet the requirements. Compared with different reinforcement patterns, four precast concrete hollow shear wall specimens Quasi-static test and two specimens static test. The test results show that all the specimens are subject to bending failure, the average ratio of the test value of bearing capacity to the predicted value is 1.31, and the ultimate displacement angle of the specimen is 1/85 to 1/55. The horizontal slip of specimen is small, The whole seismic performance of the wall has a little influence on the whole seismic performance of the wall. According to the strain curve, the strain distribution and the overall seismic performance of the test bars, the connection of the tendons and their lap length can effectively transfer the stress of the steel bar, Requirements; double row of tendons of specimens slightly better than the seismic performance of a single row of tendons with test pieces.