型钢活性粉末混凝土柱偏心受压性能有限元分析

Finite element analysis on eccentric compression behavior of section steel reactive powder concrete column

为研究型钢活性粉末混凝土(reactive powder concrete, RPC)偏压柱的承载性能,考虑偏心距和加载角2个因素的影响,对6根型钢RPC柱试件进行偏压试验,并利用Abaqus软件进行模拟,将模拟结果与试验结果进行对比分析。结果表明:随着偏心距和加载角的增大,试件极限载荷逐渐降低,偏心距对试件极限承载力的影响较明显;试件的极限位移随偏心距的增大而增大,随加载角的增大而减小;偏心受压试件的刚度随偏心距的增大而减小。有限元模拟分析结果与试验结果基本一致,可为型钢RPC偏压柱的承载性能设计提供参考。

To study the bearing capacity of section steel reactive powder concrete(RPC) eccentric compression columns, the eccentric compression tests are carried out on 6 section steel RPC column specimens by considering the influence of eccentricity and loading angle. The tests are simulated using Abaqus software, and the simulation results are compared with the test results. The results show that the ultimate load of the specimen decreases gradually with the increase of eccentricity and loading angle, and the influence of eccentricity on ultimate bearing capacity of the specimen is obvious;the ultimate displacement of the specimen increases with the increase of eccentricity and decreases with the increase of loading angle;the stiffness of eccentric compression specimen decreases with the increase of eccentricity. The results of finite element simulation analysis are basically consistent with the test results, which can provide a reference for the bearing capacity design of section steel RPC eccentric compression columns.