预制装配式部分钢骨混凝土框架梁柱节点有限元分析  

Finite element analysis for prefabricated parts of SRC frame beam-column joints

作　　者：缪俊[1] 程万鹏[1] 宋玉普[1] 

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024

出　　处：《大连理工大学学报》2014年第5期568-574,共7页Journal of Dalian University of Technology

基　　金：国家自然科学基金资助项目(重点项目90815026)

摘　　要：为了研究预制装配式部分钢骨混凝土框架梁柱节点的力学性能,以满足工程设计中的抗震要求,采用非线性有限元软件ABAQUS建立实体模型对其进行数值分析,并从破坏形态、滞回曲线、骨架曲线、延性系数及耗能能力、强度退化和刚度退化等多方面与试验结果进行比较.结果表明,采用规范的损伤塑性模型与所采用的参数能较好地模拟混凝土的力学性能;有限元模拟的塑性变形主要发生在梁与加载垫板接触部分和梁的钢骨连接部分,与试验结果非常一致;有限元与试验的延性系数分别为3.60、3.15,等效黏滞阻尼系数分别为0.25、0.29,且模拟的结果与试验结果非常接近,说明所采用的有限元模拟方法是可行的.A physical model to study the mechanical properties of prefabricated parts of SRC frame beam-column joints is set up in ABAQUS to assess its seismic performance,and the simulation results,such as the failure pattern,hysteresis curves,skeleton curves,ductility factor and energy dissipation capacity,strength degradation and stiffness degradation are compared with experimental results.The results show that the standard damage plasticity model and the parameters here for finite element analysis can simulate the mechanical properties of concrete well.Plastic deformation obtained by finite element simulation occurs mainly in the beam and loading steel plate contact position and the connecting portion of the beam,and it is very consistent with the experimental results.The finite element and experimental ductility factors are 3.60,3.15,the equivalent viscous damping coefficients are 0.25,0.29,respectively.The simulation and experimental results are very close,indicating that the finite element simulation method used is feasible.

关 键 词：部分钢骨混凝土 装配结构 节点 有限元模拟 抗震性能 

分 类 号：TU375.4[建筑科学—结构工程]