期刊论文

Finite element analysis of energy dissipation capacity of four-tube concrete filled steel tubular lattice columns

中文

建筑结构

1002-848X

2018

48

24

85-90,96

10.19701/j.jzjg.2018.24.016

国家自然科技基金项目(E080501).

本校为其他机构

为了优化四肢钢管混凝土格构柱的设计,更好地掌握格构柱的抗震性能,完成了2根四肢钢管混凝土格构柱的低周反复加载试验,并通过试验校核修正了有限元模型。利用ANSYS有限元软件对四肢钢管混凝土格构柱进行了三维非线性数值模拟,重点研究了轴压比、等效长细比及材料比例系数对试件耗能能力的影响。研究结果表明:材料比例系数ζ越大,试件延性越好,当ζ= 1.5~ 2.5时,四肢钢管混凝土格构柱的耗能性能较好,且当 ζ≈2时,试件材料比例系数设计最佳;一般轴压比n越大,试件水平承载力越大,但延性变差,当n= 0.2~ 0.5时,四肢钢管混凝土格构柱的耗能性能较好,且当n≈0.5时,试件轴压比设计最佳;一般随着等效长...

In order to optimize the design and to better grasp the seismic performance of four-tube CFST (concrete filled steel tubular) lattice columns,2 four-tube CFST lattice columns were tested under low cyclic reversed loading,and finite element models were checked and corrected by the experiment. Three dimensional nonlinear numerical simulation of four-tube CFST lattice columns were built by ANSYS software,and the influence of axial compression ratio,equivalent slenderness ratio and material proportion coefficient on the energy dissipation capacity ...