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对一栋3层足尺的新型装配整体式混凝土剪力墙子结构进行拟静力试验。该结构中包含4种连接构造,即同层同跨内预制墙的竖缝采用干式连接,同层相互垂直墙体间采用现浇转角墙连接,上、下预制墙间采用型钢抗剪键和后浇型钢边缘构件2种连接构造进行连接。试验结果表明:该类型装配整体式型钢剪力墙结构具有良好的抗震性能;连梁在整个抗侧力体系中起到第一道防线的作用,加载结束时,连梁发生明显剪切破坏,具有较强的耗能能力;干式连接在试验中陆续进入屈服,可作为结构的第二道耗能防线;试验后期,部分干式连接的焊缝出现断裂,无法继续限制墙肢对楼板的冲切作用。型钢边缘构件和后浇RC转角墙中的纵筋分别在层间位移角达到1/150和1/100时发生屈服;整体模型在层间位移角达到1/75后,未出现承载力失效或楼板构件脱落现象,可认为该结构体系的抗震性能等同于现浇剪力墙结构。
A quasi-static test was carried out on a 3-layer full-scale, new-type, monolithic concrete shear wall sub-structure. The structure includes four kinds of connection structure, namely the same level with the precast vertical cross-stitching using dry connection, the same floor perpendicular to each other with the use of cast-in-situ corner wall connection, the upper and lower precast walls with steel shear-resistant keys And after-pouring steel edge member 2 kinds of connection structure to connect. The test results show that this type of integral steel shear wall structure has good anti-seismic performance. The continuous beam plays the role of the first line of defense in the entire anti-lateral force system. At the end of loading, Has a strong energy-consuming ability; dry connection in the test one after another into the yield, can be used as the structure of the second energy-saving line; late in the experiment, part of the dry connection of the weld fracture, unable to continue to limit the wall limbs on the floor Die-cutting effect. The longitudinal reinforcement in the edge members and the RC corner walls of the steel sections yield when the displacement angle between layers reaches 1/150 and 1/100, respectively. No failure of bearing capacity occurs when the displacement angle between layers reaches 1/75 Floor element shedding phenomenon, the seismic behavior of the structural system can be considered equivalent to cast-in-situ shear wall structure.