新型SRC柱-H型钢梁组合节点有限元分析  

Finite element analysis of new SRC column to H beam composite joint

作　　者：乔光德 刘继明[1] 吴成龙[1] 谭文娅 王传贻 张祥威 QIAO Guangde;LIU Jiming;WU Chenglong;TAN Wenya;WANG Chuanyi;ZHANG Xiangwei(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》2022年第4期17-25,共9页Journal of Qingdao University of Technology

基　　金：山东省高校科研计划项目(A2018-065)。

摘　　要：为研究新型SRC柱-H型钢梁组合边节点的抗震性能,在拟静力试验基础上,通过有限元软件ABAQUS对该节点进行数值模拟,模拟所得滞回曲线、骨架曲线和破坏形态与试验结果基本吻合,验证了模型的可行性。在此基础上,设计了4种节点盖板长度和3种柱轴压比,进一步探究2个参数对该节点抗震性能的影响规律。结果表明:各模型的最终破坏形态均是在翼缘连接板处形成塑性铰;当节点盖板长度增加时,模型承载能力得到显著提高,但延性和耗能能力均有所下降;柱轴压比的增大能够大幅提高节点的耗能能力,轴压比为0.5模型的等效黏滞阻尼系数比BASE模型提升12.4%,但高轴压比时模型的强度和刚度在加载后期退化速率较快。该新型SRC柱-H型钢梁组合边节点符合“强柱弱梁,强节点弱构件”抗震设计思想,可为后续的深入研究提供一定的理论基础。To study the seismic performance of the new SRC column to H beam combination joint,on the basis of the proposed static test,the finite element software ABAQUS is used to simulate the joint.The hysteresis curves,skeleton curves and failure patterns obtained from the simulation basically agree with the test results,which verifies the feasibility of the model.On this basis,four joint cover lengths and three column axial compression ratios are designed to further investigate the law of influence of the two parameters on the seismic performance of this joint.Results indicate that the final failure pattern of each model is the formation of plastic hinges at the flange connecting plate.When the length of the joint cover increases,the model’s load-bearing capacity is significantly increased,but both ductility and energy consumption are reduced.The increase in the axial compression ratio can significantly increase the energy consumption of the joint.The equivalent viscous damping coefficient of the model with an axial compression ratio of 0.5 is 12.4%higher than that of the BASE model,but the strength and stiffness of the model at high axial compression ratios are degraded at a faster rate in the late loading period.The new SRC column to H beam combination joint conform to the seismic design concept of“strong columns and weak beams,strong joints and weak members”,which can provide a theoretical basis for further in-depth research.

关 键 词：预制装配式 抗震性能 ABAQUS 梁柱节点 轴压比 

分 类 号：TU398[建筑科学—结构工程]