装配式复式钢管混凝土框架-梁端螺栓连接钢筋混凝土剪力墙抗震性能试验研究  

Experimental study on seismic performance of assembly concrete-filled double-skin steel tube frame with beam-bolt-connected RC shear walls

作　　者：赵均海[1] 胡壹[1,2] 张冬芳 ZHAO Junhai;HU Yi;ZHANG Dongfang(School of Civil Engineering,Chang'an University,Xi*an 710061,China;School of Civil Engineering,Central South University of Forestry and Technology,Changsha 410004,China)

机构地区：[1]长安大学建筑工程学院,陕西西安710061 [2]中南林业科技大学土木工程学院,湖南长沙410004

出　　处：《建筑结构学报》2021年第7期109-118,共10页Journal of Building Structures

基　　金：国家自然科学基金项目(51878056);陕西省科技计划(2019SF-256);中央高校基本科研业务费专项资金(300102288703)。

摘　　要：为促进复式钢管混凝土框架剪力墙结构的建筑工业化,提出一种可完全装配式建造的复式钢管混凝土框架-梁端螺栓连接钢筋混凝土剪力墙结构体系,体系中梁-柱节点、柱-柱拼接节点和框架与剪力墙连接均采用全螺栓装配式连接。为研究该体系的抗震性能,开展了三榀1∶2缩尺模型的低周往复荷载试验,研究了各模型的破坏特征、滞回性能、延性、抗侧刚度和承载力退化。结果表明:梁端螺栓连接钢筋混凝土剪力墙(BRW)破坏形态与钢筋混凝土梁"剪压"型破坏特征相似;BRW先于框架发生破坏,可作为复式钢管混凝土框架的第一道抗震防线,框架则为第二道防线;BRW与框架的装配式连接可靠,在整个加载过程中可有效提高框架的承载力和抗侧刚度,可保证BRW与框架在地震作用下的协同工作能力,进而保障BRW的性能得以充分发挥。To promote the building industrialization of concrete-filled double-skin steel tube(CFDST) frame shear wall structures, a fully-assembled constructed CFDST frame with beam-bolt-connected reinforced concrete(RC) shear wall system was proposed, only high-strength bolts were used in the beam-to-column joints, column-to-column joints and frame-to-wall connections. To investigate the seismic performance of the novel system, low cyclic loading tests on three 1/2-scaled models were conducted. The failure characteristics, hysteretic performance, ductility, lateral stiffness and strength degradation of these specimens were studied. The results show that the failure mode of beam-only-connected RC shear wall(BRW) is similar with shear-compression failure characteristic of RC beam. The BRW fails prior to the CFDST frame, thus the BRW could be acted as the first defense line of CFDST structures, and the frame is the second one. The connection between BRW and CFDST frame is reliable, the BRW could enhance the ultimate strength and lateral stiffness of the CFDST frame effectively in the whole loading process, thus the interoperability of them could be ensured under earthquake loads, and then the performance of the BRW could be fully demonstrated.

关 键 词：复式钢管混凝土框架 装配式结构 钢筋混凝土剪力墙 梁端螺栓连接 拟静力试验 抗震性能 

分 类 号：TU398.9[建筑科学—结构工程] TU317.1