考虑楼板组合效应的装配式SRC柱-钢梁中节点非线性分析  

Nonlinear analysis of prefabricated SRC column-steel beam joint considering slab combination effect

作　　者：谭文娅 刘继明[1] 时伟[1] 吴成龙[1] TAN Wenya;LIU Jiming;SHI Wei;WU Chenglong(School of Civil Engineering,Qingdao University of Technology,Qingdao 266525,China)

机构地区：[1]青岛理工大学土木工程学院,青岛266525

出　　处：《青岛理工大学学报》2023年第5期37-45,共9页Journal of Qingdao University of Technology

基　　金：国家自然科学基金资助项目(51078195);山东省高校科研计划项目(A2018-065)。

摘　　要：为研究考虑楼板组合效应时装配式SRC柱-钢梁中节点的抗震性能,基于拟静力试验结果,运用ABAQUS软件对装配式SRC柱-钢梁节点进行有限元分析,通过对比有限元与试验的滞回曲线和骨架曲线,验证模型可靠性。在该模型基础上,分析轴压比分别为0.15,0.25,0.40和0.60时,对考虑楼板组合效应的装配式SRC柱-钢梁节点抗震性能的影响,结果表明:增大轴压比可使考虑楼板组合效应的节点试件承载力提高,但由于柱端钢板变形和螺栓滑移,考虑楼板组合效应的节点试件的破坏形态为柱端破坏,在地震作用下的耗能能力降低;轴压比越大,前期节点刚度退化越大,但后期退化平缓,表明节点具有较强的抗侧移能力。In order to further study the seismic performance of the prefabricated SRC columnsteel beam composite mid-joint when considering the slab combination effect,and based on the results of the quasi-static test of the joint,the prefabricated SRC column-steel beam composite mid-joint was modeled in this study by using ABAQUS software.The reliability of the model is verified by comparing the hysteretic curve and skeleton curve of the finite element and the experimental results.On the basis of the model,the seismic performance of the prefabricated SRC column-steel beam joints under different axial compression ratios(0.15,0.25,0.40 and 0.60)is analyzed,considering the slab combination effect.The results show that increasing the axial compression ratio can increase the bearing capacity of the joint considering the slab combination effect.However,due to the deformation of column end steel plate and bolt slip,the failure mode of joint considering the slab combination effect is column end failure.And the energy dissipation capacity of the joints is reduced under earthquake.The larger the axial compression ratio is,the greater the stiffness degradation of the joint is in the early stage,but the degradation is slower in the later stage,which indicates that the joint has strong lateral displacement resistance.

关 键 词：装配式 组合节点 数值模拟 楼板组合效应 

分 类 号：TU375.4[建筑科学—结构工程]