摘要
装配式钢混凝土组合结构因其良好的力学性能,已经得到越来越多的关注和研究。在前期试验研究的基础上,设计了4个考虑楼板组合效应的装配式钢混组合节点试件。借助ABAQUS有限元软件,对新型组合节点进行了精细化有限元建模并进行有效性验证。在此基础上,进一步分析轴压比对新型节点抗震性能的影响规律。研究结果表明,考虑楼板组合效应的装配式钢混组合节点的滞回曲线均较为饱满,刚度的退化性能稳定,具有良好的耗能能力和延性性能,其平均延性系数在3.08~3.52之间,等效黏滞阻尼系数在0.318~0.323之间。轴压比小于0.3时,随着轴压比的增大可有效改善节点的承载能和变形能力,但其刚度和耗能性能有所降低。
Prefabricated steel-concrete composite structure has received more and more attention and research due to its good mechanical properties.Based on the previous experimental research,four prefabricated steel-concrete composite joints are designed.With the help of ABAQUS,the refined finite element model of the new composite joint is built and its validity is verified.On this basis,the influence of axial compression ratio on the seismic performance of new joints is further analyzed.The results show that the hysteretic curves of new joints are full,the stiffness degradation performance is stable,and they have good energy dissipation capacity and ductility performance.The average ductility coefficient is between 3.08~3.52,and the equivalent viscous damping coefficient is between 0.318~0.323.When the axial compression ratio is less than 0.3,with the increase of the axial compression ratio,the bearing capacity and deformation capacity of the joint can be effectively improved,but its stiffness and energy consumption performance are reduced.
作者
于素健
陈珊珊
周飞
刘继明
吴成龙
王鹏飞
YU Sujian;CHEN Shanshan;ZHOU Fei;LIU Jiming;WU Chenglong;WANG Pengfei(.College of Civil Engineering,Qingdao University of Technology,Qingdao 266033,China;Engineering Quality Test and Appraisal Center,Qingdao University of Technology,Qingdao 266033,China;College of Architecture and Urban Planning,Qingdao University of Technology,Qingdao 266033,China;Qingdao Tengyuan Design Office Co.,Ltd.,Qingdao 266033,China)
出处
《混凝土》
CAS
北大核心
2021年第9期116-122,共7页
Concrete
基金
国家自然科学基金项目(51078195)
山东省高校科研计划项目(A2018-065)。
关键词
装配式
钢混组合节点
轴压比
抗震性能
有限元分析
assembled
steel-concrete composite joint
axial compression ratio
seismic performance
finite element analysis
