滑移螺杆连接的BRB-RC框架节点抗震性能试验研究  

Experimental study on seismic performance of BRB-RC frame subassemblage with sliding bolt connection

作　　者：赵俊贤[1] 张家广[2] 王柏顺 ZHAO Junxian;ZHANG Jiaguang;WANG Baishun(School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510641,China;College of Civil Engineering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]华南理工大学土木与交通学院,广州510641 [2]太原理工大学土木工程学院,太原030024

出　　处：《东南大学学报(自然科学版)》2025年第1期98-108,共11页Journal of Southeast University:Natural Science Edition

基　　金：国家自然科学基金资助项目(51708386,51778244);中国地震局工程力学研究所基本科研业务费专项资助项目(2021D25)。

摘　　要：为减小大震下防屈曲支撑(BRB)钢筋混凝土(RC)框架节点开合效应对子结构抗震性能的不利影响,提出一种滑移螺杆连接方法,通过对预埋螺杆和锚板表面进行无黏结处理,减小节点板对RC子结构梁柱变形的切向约束,从而将BRB轴力以抗拉不抗剪的方式有效传递至RC子结构。对2个滑移节点板连接和1个传统节点板连接的BRB-RC梁柱组合件进行拟静力试验,以验证滑移螺杆连接的有效性。试验结果表明,与传统焊接节点连接相比,滑移螺杆连接性能更加稳定,简化了子结构梁柱的受力状态。当层间位移角为2%时,子结构梁剪力和累积耗能降低幅度分别可达37.6%和29%,有效减轻了子结构损伤。To reduce the adverse impact of the significant frame action in the buckling-restrained braced rein-forced concrete(BRB-RC)frame substructure under severe earthquake on the seismic performance of the sub-structure,a sliding bolt connection was proposed.The unbonded surfaces of the embedded bolts and the an-chor plate were adopted to significantly release the tangential constraint of the gusset plate on the deformation of the RC substructure beam and column,so that the BRB axial force effectively transfers to the RC substruc-ture in a tensile and non-shear manner.To verify the effectiveness of the sliding bolt connection,cyclic tests were conducted on two full-scale BRB-RC beam-column subassemblages based on sliding bolt connection and one using traditional gusset plate connection.The experimental results show that compared with the traditional gusset plate,the connection performance of the sliding bolts is more stable,which effectively simplifies the stress state of the substructure beam and column.With the inter-story drift ratio of 2%,the shear force and cu-mulative energy dissipation of the substructure beams are reduced by 37.6%and 29%,respectively,which can significantly decrease the substructure damage.

关 键 词：防屈曲支撑(BRB) 钢筋混凝土(RC)框架 开合效应 滑移螺杆连接 大震作用 

分 类 号：TU313.3[建筑科学—结构工程] TU375.4