装配式抗侧力格构柱抗震性能有限元分析

FINITE ELEMENT ANALYSIS OF SEISMIC BEHAVIOR OF PREFABRICATED LATERAL RESISTANT LATTICE COLUMN

提出一种具有新型装配式梁柱节点的格构柱。基于ABAQUS分析装配式抗侧力格构柱的抗震性能,通过前期研究中模拟结果与试验结果的对比,验证了ABAQUS模拟分析装配式抗侧力格构柱的可行性。通过数值模拟分析,研究装配式抗侧力格构柱的滞回曲线、骨架曲线、刚度退化、延性性能、耗能能力。结果表明:在水平低周往复荷载作用下,新型装配式梁柱节点并未破坏;装配式抗侧力格构柱的滞回曲线较为饱满;刚度近似呈线性减小,未出现突变;延性性能较好;破坏时等效黏滞阻尼比为0.308,耗能能力较好。

A new type of lattice column with prefabricated beam-column joint was proposed.The joint is connected with beam and column by four high-strength bolts,which has a simple structure and convenient construction.The seismic behavior of prefabricated lateral resistant lattice column can be analyzed based on the finite element analysis software ABAQUS.The feasibility of simulation analysis based on ABAQUS of prefabricated lateral resistant lattice column was verified by comparing the experimental results with the simulation results in the previous research.The hysteresis curve,skeleton curve,stiffness degradation,ductility and energy dissipation of the specimen were studied by numerical simulation.The results indicated that under quasi-static load,the new type of prefabricated beamcolumn joint was not damaged;the hysteresis curve of the specimen was full;the stiffness decreased approximately linearly and there was no mutation;the ductility was well;and the equivalent viscous damping coefficient was 0.308, which means it had a good energy consumption.