荷载作用下钢管再生混凝土柱的受力分析及数值模拟研究

Mechanical Analysis and Numerical Simulation of Recycled Concrete Filled Steel Tubular Columns Under Load

针对钢管再生混凝土柱在实际工程中出现的顶部脱空现象,基于弹性力学圆筒受均布压力的拉梅解答,分析了钢管、核心再生混凝土分别承受的荷载大小和由于变形不协调造成的轴力传递长度,并基于已有的钢管再生混凝土试验研究,得到了两者的理论分析值。此外,运用ANSYS有限元分析软件模拟了不同条件下钢管和再生混凝土的应力分布情况,并将模拟得到的压力分配情况和轴力传递长度与理论值进行了对比,结果表明吻合程度较好。

For the top void phenomenon of recycled concrete filled steel tubular column in the practical application,based on the Lame solution of elastic mechanics cylinder under uniform pressure,the load borne by steel tube and core recycled concrete respectively,and the length of axial transfer were analyzed.Based on the existing test of recycled concrete filled steel tubular,the theoretical solution was obtained.In addition,ANSYS finite element analysis software was used to simulate the load under different conditions.The pressure distribution and axial transfer length were compared with the theoretical analysis value.The simulation results were in good agreement with the theoretical results analysis.