槽口-无粘结接缝与平界面接缝预制剪力墙抗震性能对比

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摘要为研究槽口-无粘结接缝在预制剪力墙抗震性能方面的优越性，对槽口-无粘结接缝预制剪力墙进行了低周反复荷载试验，并与平界面接缝预制剪力墙及现浇剪力墙进行抗震性能对比，结果表明：三构件的开裂荷载、屈服荷载及峰值荷载接近，骨架曲线走势基本一致，最终破坏形态均为边缘构件钢筋屈服，根部混凝土压碎。槽口-无粘结接缝预制剪力墙的接缝无滑移，滞回曲线相对饱满，延性比平界面接缝预制剪力墙及现浇剪力墙的延性提高30%，耗能能力比平界面接缝预制剪力墙及现浇剪力墙的耗能能力提高57%，槽口-无粘结接缝预制剪力墙、平界面接缝预制剪力墙的前期刚度略小于现浇剪力墙，后期刚度三构件接近。研究证明，槽口-无粘结接缝能够明显提高预制剪力墙的抗震性能，具有广阔的应用前景。

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	孙崇芳1
	2
	梁书亭3
	朱筱俊4
	郭正兴3
	刘家彬3
	李虎2
	郭建民2
	李罡2
	吴东岳5

关键词 ：预制剪力墙, 槽口-无粘结接缝, 滞回特性, 延性, 耗能能力

Abstract：In order to study superiority of rabbet-unbound connection on seismic performance, precast shear wall with rabbet-unbound connection was tested under low cyclic loading, and its seismic performance was compared with precast shear wall with flat interface connection and cast-in-place shear wall. The results showed that the crack load, yield load and peak load of three specimens were similar, and skeleton curve trends of three specimens were basically identical. Final failure mode of three specimens was that edge longitudinal reinforcements yielded firstly, and then the wall root concrete was crushed. No horizontal slide appeared at rabbet-unbound connection. Compared with precast shear wall with flat interface connection and cast-in-place shear wall, precast shear wall with rabbet-unbound connection’s hysteresis curve was relatively fuller, ductility increased by 30% and energy dissipation capacity increased by 57%. What’s more, for the stiffness at early stage, precast shear wall with rabbet-unbound connection and precast shear wall with flat interface connection was slightly smaller than that of cast-in-situ shear wall, and for the stiffness at late stage, the stiffness degradations of three specimens were similar. The research proved that rabbet-unbounded connectioncan obviously improve the seismic performance of precast shear wall, which has broad application prospect.

Key words： Precast shear wall Rabbet-unbound connection Hysteresis characteristic Ductility Energy dissipation

收稿日期: 2019-04-16 出版日期: 2020-09-15

引用本文:

孙崇芳1,2，梁书亭3，朱筱俊4，郭正兴3，刘家彬3，李虎2，郭建民2，李罡2，吴东岳5. 槽口-无粘结接缝与平界面接缝预制剪力墙抗震性能对比[J]. 振动与冲击, 2020, 39(18): 188-194.
SUN Chongfang1,2,LIANG Shuting3,ZHU Xiaojun4,GUO Zhengxing3,LIU Jiabin3,LI Hu2,GUO Jianmin2,LI Gang2,WU Dongyue5. Comparison of seismic performances of precast shear walls with rabbet-unboundconnection and with flat interface connection. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(18): 188-194.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2020/V39/I18/188

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