新型型钢混凝土柱抗震性能

Seismic Behavior of New Type Steel Reinforced Concrete Column

为了研究2种新型截面型钢混凝土柱的抗震性能,利用数值模拟与理论分析相结合的方法,采取有限元软件ABAQUS建立型钢混凝土柱模型,分析SRC柱在低周反复载荷作用下的抗震性能,并与已有试验结果进行对比,验证了所建有限元模型的适用性与正确性.在此基础上,通过大量的数值模拟,研究了配钢形式、腹板厚度、轴压比、加载方向等参数对新型SRC柱抗震性能的影响,并与普通型钢混凝土柱进行了对比,得出2种新型SRC柱抗震性能均明显优于普通SRC柱,尤其是对角布置十字型钢可使型钢充分发挥作用,在很大程度上改善了SRC柱的抗震性能.

In order to study the seismic performance of two new cross-section steel concrete columns,a combination of numerical simulation and theoretical analysis was used,and the finite element software ABAQUS was used to establish a steel concrete column model to analyze the seismic performance of SRC columns under low-cycle repeated loads.Compared with the existing test results,the applicability and correctness of the built finite element model were verified.On this basis,through a large number of numerical simulations,the influence of the steel configuration,web thickness,axial compression ratio,loading direction and other parameters on the seismic performance of the new SRC column was studied,and the comparison with ordinary steel concrete columns was carried out.It is concluded that the seismic performance of the two new SRC columns is significantly better than that of ordinary SRC columns.In particular,the diagonally arranged cross section steel can make full use of the section steel,which greatly improves the seismic performance of the SRC column.