高强连续螺旋箍筋装配柱受压静载试验的非线性数值模拟

Nonlinear numerical simulation of mechanical behaviors assembled connecting high-strength continuous spiral stirrup concrete columns

采用ABAQUS有限元分析软件对3根高强连续螺旋箍筋装配柱进行受压静载试验全过程的非线性数值模拟,分析外包钢板箍的厚度、长度以及柱的轴压比对装配整体柱的承载能力的影响。在分析中,选用约束混凝土的本构模型进行高强连续螺旋箍筋装配柱的静力非线性分析,并结合梁柱杆件单元,根据不同的材料属性对高强连续螺旋箍筋装配柱正截面进行精细划分,以实现高强连续螺旋箍筋装配柱的模拟技术。结果表明,ABAQUS有限元分析软件能够有效模拟高强连续螺旋箍筋装配柱正截面的力学和变形过程,具有较好的计算精度。

A nonlinear numerical simulation is conducted for three eccentric compression specimens assembled with connecting high-strength continuous spiral stirrup concrete columns using finite element software ABAQUS.The effects of the thickness,length of steel plate hoops and pressure ratio were considered on the bearing capacity of the eccentrically loaded specimens.The column section was fine-divided and different fibers were defined to simulate the appropriate material properties.A model of assembled connecting high-strength continuous spiral stirrup concrete columns was established based on the nonlinear beam-column element.The comparative analysis of the simulation results and the experimental results indicates that ABAQUS program can be used in simulating the loading process of assembled connecting high-strength continuous spiral stirrup concrete columns effectively.