摘要
为研究设置混合连接件的双钢板混凝土组合剪力墙的抗震性能,对4片设计轴压比为0.5的剪力墙进行了拟静力试验,研究其破坏过程、承载力、延性、刚度和耗能能力,并分析不同连接件(栓钉、T形加劲肋、缀板)提高组合剪力墙抗震性能的作用。采用ABAQUS有限元软件建立设置混合连接件的双钢板混凝土组合剪力墙模型,在经试验验证的基础上开展了连接件布置形式分析。研究结果表明:剪力墙破坏模式均为压弯破坏,布置于组合剪力墙两端的缀板有效抑制了早期腹侧钢板的局部屈曲,同时缀板和T形加劲肋相互作用可以扩大塑性铰区域,更利于抗震;双钢板混凝土组合剪力墙两端缀板和T形加劲肋不进行通长设置时,对墙体承载力影响较小,但可提高其延性;采用栓钉、T形加劲肋、缀板三种连接件布置形式的组合剪力墙较全栓钉组合剪力墙的位移延性系数增加22.73%,且耗能能力好;通过对比发现两端设置T形加劲肋、其他部位设置缀板、中间连接件为栓钉的组合墙体性能最优。
To investigate the seismic performance of double steel plate concrete composite shear walls with hybrid connectors,quasi-static tests were carried out on four shear walls with an axial compression ratio of 0.5.The failure process,bearing capacity,ductility,stiffness and energy dissipation capacity of each specimen were studied,and the effects of different connectors(studs,T-stiffeners,battens)on improving the seismic performance of composite shear walls were analyzed.Based on the ABAQUS finite element software,the models of double steel plate concrete composite shear walls were established,and the layout of shear connectors was analyzed.The results show that all four specimens exhibit compression-bending failure modes.The batten plates arranged at both ends of the composite shear wall effectively prevent the local buckling of the early web steel plate.At the same time,the interaction between the batten plates and T-shaped stiffeners expands the plastic hinge region,which is more conducive to seismic resistance.When the battens and T-shaped stiffeners at both ends of the composite shear wall are not set at full length,the bearing capacity of the wall is less affected,but the ductility can be improved.The displacement ductility factor of composite shear wall with studs,T-shaped stiffeners and batten plates is 22.73%higher than that of full stud composite shear wall,and its energy dissipation capacity is good.By comparison,it is found that the composite walls with T-shaped stiffeners at both ends,batten plates at other parts,and studs in the middle have the best performance.
作者
张壮南
李姗珊
王春刚
陈勇
郎崎
刘晟恺
ZHANG Zhuangnan;LI Shanshan;WANG Chungang;CHEN Yong;LANG Qi;LIU Shengkai(School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,China;China Northeast Architectural Design&Research Institute,Shenyang 110006,China;Jilin Sub-bureau of Northeast Regional Air Traffic Management Bureau,CAAC,Changchun 130022,China)
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2023年第S01期92-100,共9页
Journal of Building Structures
基金
中建股份科技研发课题(CSCEC-2010-Z-01-02,CSCEC-2010-C-05)
关键词
双钢板混凝土组合剪力墙
混合连接
拟静力试验
有限元分析
抗震性能
double steel plate concrete composite shear wall
hybrid connection
quasi-static test
finite element analysis
seismic performance
