可恢复功能装配式剪力墙抗震性能试验研究  

Experimental study on seismic performance of recoverable precast shear wall

作　　者：叶建峰 刘宪成 颜桂云 余勇胜 陈亚辉 刘如月 YE Jianfeng;LIU Xiancheng;YAN Guiyun;YU Yongsheng;CHEN Yahui;LIU Ruyue(College of Civil Engineering,Fujian University of Technology,Fuzhou 350118,China;Fujian-Taiwan Cooperative Institute of Civil Engineering Technology in Universities of Fujian Province,Fuzhou 350118,China)

机构地区：[1]福建理工大学土木工程学院,福建福州350118 [2]闽台合作土木工程技术福建省高校工程研究中心,福建福州350118

出　　处：《地震工程与工程振动》2024年第1期61-72,共12页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金面上项目(51878174);福建省自然科学基金面上项目(2020J01940);福建省财政厅科技项目(GY-Z21005)。

摘　　要：提出一种由预制混凝土剪力墙和钢制耗能连接组成的可恢复功能装配式剪力墙结构(Recoverable precast shear wall with steel energy-dissipator,RPSW-SE),对其进行低周往复荷载试验,对比该装配式剪力墙与现浇混凝土剪力墙的破坏过程、抗剪承载力、滞回性能和性能退化特征等。在第一次试验的基础上仅更换钢制耗能连接区中受损的钢制连接件进行受损试件的修复,再次进行低周往复加载试验,研究修复前后试件的滞回性能、抗剪承载力和耗能能力等抗震性能,分析该装配式剪力墙抗震性能的可恢复能力。研究结果表明:装配式剪力墙具有较好的整体性和抗剪性能,试件滞回曲线较为饱满,钢制耗能连接区先于混凝土墙体发生屈服并进行耗能,提高了结构的变形能力和耗能能力;改善了剪力墙的应力分布和损伤演变,试件的失效破坏由剪切连接板开缝处的小钢柱断裂引起,混凝土墙体中无明显塑性损伤;剪力墙中90.7%以上的耗能集中在钢制耗能连接区中,实现了损伤和耗能可控;受损试件修复后各项性能指标与原试件相近,说明钢制耗能连接装配式剪力墙具有较好的可恢复功能。A recoverable precast shear wall composed of precast RC wall and steel energy-dissipator(RPSW-SE)was proposed and tested under reversed cyclic load.The failure process,shear capacity,hysteretic behavior and degradation characteristics were compared with that for cast-in-place concrete shear wall.Moreover,the damaged specimens were repaired by replacing damage steel member and tested again to investigate the seismic performance including hysteretic behavior,shear resistance as well as energy dissipation capacity,and to discuss the recoverable of RPSW-SE.The results showed that the RPSW-SE had good integrity and shear resistance,and the hysteretic curves were relatively full.The steel-energy connection area yielded prior to RC wall and dissipated a large amount of energy,enhancing the deformation capacity and energy dissipation capacity.The stress distribution and damage evolution of the shear wall was improved,and the failure of the RPSW-SE was caused by the fracture of the short steel-column at the slits of the shear-plate,without obvious plastic damage in the concrete wall.It was analyzed that more than 90%of the energy-dissipation in the shear wall was concentrated in the steel-energy connection area,achieving the controllable damage and energy dissipation.The performance indexes of the repaired RPSW-SE were close to those of original ones,indicating that the RPSW-SE had good recoverability.

关 键 词：装配式剪力墙 可恢复功能 钢制耗能连接 抗剪性能 损伤与耗能可控 拟静力试验 

分 类 号：TU398.9[建筑科学—结构工程]