装配式混凝土框架-冷弯薄壁型钢复合墙板结构抗震性能试验研究  

Experimental study on seismic performance of prefabricated concrete frame-cold-formed thin-walled steel composite wall structures

作　　者：王静峰[1,2] 胡培芳 汪皖黔 潘广东 仇多宏 WANG Jingfeng;HU Peifang;WANG Wanqian;PAN Guangdong;QIU Duohong(School of Civil Engineering,Hefei University of Technology,Hefei 230009,China;Anhui Collaborative Innovation Center of Advanced Steel Structure Technology and Industrialization,Hefei University of Technology,Hefei 230009,China;Hefei Guorui Integrated Construction Technology Limited Company,Hefei 230009,China)

机构地区：[1]合肥工业大学土木与水利学院,安徽合肥230009 [2]合肥工业大学安徽省先进钢结构技术与产业化协同创新中心,安徽合肥230009 [3]合肥国瑞集成建筑科技有限公司,安徽合肥230009

出　　处：《建筑结构学报》2023年第4期247-256,共10页Journal of Building Structures

基　　金：国家自然科学基金项目(51478158);教育部新世纪人才支持计划(NCET-12-0838)。

摘　　要：为研究装配式混凝土框架-冷弯薄壁型钢复合墙板(CTSC墙板)结构的抗震性能和破坏机理,对1榀装配式混凝土纯框架和2榀装配式混凝土框架-CTSC墙板结构进行了低周反复荷载试验。通过分析结构破坏模式、荷载-位移曲线、刚度退化特征、延性、耗能机理以及关键部位应变变化规律,探究了CTSC墙板内嵌式连接和外挂式连接对装配式混凝土框架抗震性能的影响。结果表明:CTSC墙板内嵌或外挂连接均安全可靠,可有效地保证地震作用下装配式混凝土框架与CTSC墙板的协同工作;与纯框架相比,采用内嵌和外挂连接形式时结构的水平承载力分别提高28.3%和15.0%,初始刚度分别提高38.4%和16.8%。基于等效拉压杆原理,提出了装配式混凝土框架内嵌CTSC墙板结构的抗侧刚度简化计算式,并验证了计算结果的准确性。One prefabricated concrete pure frame and two prefabricated concrete frames-cold-formed thin-walled steel composite(CTSC)walls were designed and tested under cyclic loadings to study their seismic behaviors and failure mechanism.The failure modes and load-displacement relationships,stiffness degradation,ductility performance,energy dissipation mechanism and strain variation characteristics of key positions were analyzed comprehensively.In the analysis above,the seismic performance of prefabricated concrete frames was studied in terms of the effect of embedded or external connections of CTSC walls.The results indicate that both the embedded and external connections between prefabricated concrete frame and CTSC wall panels can effectively guarantee the cooperative work of the prefabricated frame and the CTSC panels under earthquakes.Compared with the concrete pure frame,the bearing capacity of frame embedded CTSC wall panels and external CTSC wall panels is respectively increased by 28.3%and 15.0%,and the initial stiffness is improved by 38.4%and 16.8%,respectively.Based on the principle of equivalent tension-compression bar,a simplified formula of the prefabricated concrete frame embedded CTSC walls was proposed,which could calculate the lateral stiffness.And the accuracy of the calculation results was verified.

关 键 词：装配式混凝土框架 CTSC墙板 墙-框连接方式 低周荷载试验 抗震性能 抗侧刚度 

分 类 号：TU398[建筑科学—结构工程] TU317.1