摘要
已有研究表明,RC分体柱相对于整体柱具有更优的抗震延性,但关于轴压比对其抗侧刚度及耗能性能的影响研究甚少。本文通过弹塑性数值模拟,对比研究整体柱与分体柱的抗侧移刚度、耗能系数、延性系数,分析轴压比对上述指标的影响规律。结果表明:在不同轴压比下,分体柱的抗侧刚度均小于整体柱,延性系数和耗能系数均大于整体柱,整体上可以看出分体柱比整体柱具有更好的抗震性能。本文研究表明,当轴压比控制在0.5~0.7时,分体柱相对于整体柱的延性和耗能性能的提升达到最大值。
Studies have shown that RC split columns have better seismic ductility than monolithic columns, but there are few studies on the effect of axial compression ratio on their lateral stiffness and energy dissipation performance. In this paper, through elastoplastic numerical simulation, the lateral stiffness, energy dissipation coefficient, and ductility coefficient of the integral housing and the split column are compared and analyzed, and the influence of the axial compression ratio on the above indicators is analyzed. The results show that under different axial compression ratios, the lateral stiffness of the split column is smaller than that of the integral column, and the ductility coefficient and energy dissipation coefficient are both larger than that of the integral column. As a whole, it can be seen that the split column has better seismic resistance than the integral column performance. The study in this paper shows that when the axial compression ratio is controlled between 0.5 and 0.7, the ductility and energy consumption performance of the split column relative to the monolithic column can be increased to the maximum.
作者
刘方成
胡杰
王松山
LIU Fangcheng;HU Jie;WANG Songshan(School of Civil Engineering,Hunan University of Technology,Zhuzhou 412007,China)
出处
《建筑结构》
CSCD
北大核心
2021年第S02期968-973,共6页
Building Structure
基金
中国地震局工程力学研究所基本科研业务费专项项目(2019D25)
湖南省自然科学基金项目(2020JJ6073)
关键词
钢筋混凝土(RC)
分体柱
延性
耗能能力
抗侧刚度
Reinforced Concrete(RC)
split column
ductility
energy dissipation capacity
lateral stiffness
