圆钢管混凝土短柱力学性能三维数值模拟分析

Three-dimensional numerical simulation of mechanical propreties for short concrete-filled circular steel tubes

用材料破坏过程分析系统RFPA3D(Realistic Failure Process Analysis)三维数值模拟方法对轴心受压的圆钢管混凝土短柱进行了数值模拟分析,研究了钢管混凝土短柱的力学性能及破坏模式。着重探讨了套箍系数对试件的承载能力、延性和破坏模式的影响。数值模拟结果证明了RFPA3D数值试验方法模拟钢管混凝土结构的有效性,可为工程设计提供参考。

Realistic Failure Process Analysis （RFPA^3D） code was used to simulate the short concrete-filled circular steel tube columns which have subjected to axial loads and investigate the mechanical behavior and failure modes of the columns.In particular, the effect of parameter of confining index on the ultimate load-carrying capacity, ductility and failure modes were studied.The simulation results prove that RFPA^3D method is a useful and effective tool to simulate the concrete-filled steel tube and significant to engineering design.