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型钢再生混凝土结构可以将建筑垃圾重新利用,并提高构件的强度和耗能能力。采用开源的地震工程模拟系统OpenSees对7个型钢再生混凝土长柱试件进行全过程非线性数值模拟,分析了在不同再生混凝土取代率、轴压比和体积配箍率下型钢再生混凝土长柱的承载力、延性和耗能能力。在建模过程中,采用纤维模型对型钢再生混凝土柱截面进行细致划分,并对不同截面赋予相应的材料属性,同时结合非线性梁柱单元来完成型钢再生混凝土柱的数值模拟。与试验的对比分析表明,OpenSees能够有效地模拟型钢再生混凝土长柱的受力和变形全过程。
Recycled steel structure can reuse construction waste, and improve the strength and energy consumption of components. The open-ended seismic engineering simulation system OpenSees was used to simulate the entire process of seven columns of recycled concrete long columns specimens. The effects of different recycled concrete replacement ratio, axial compression ratio and volumetric ratio on the long columns of SRC columns Bearing capacity, ductility and energy consumption. In the process of modeling, the fiber model was used to finely divide the cross-section of SRC columns, and to give corresponding material properties to different cross-sections. At the same time, the nonlinear beam-column units were used to complete the numerical simulation of SRC columns. The comparison with the test shows that OpenSees can effectively simulate the whole process of stress and deformation of long steel reinforced concrete columns.