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进行了8个方CFRP-钢管混凝土压弯构件的滞回性能试验。试验结果表明,纵向CFRP对方钢管混凝土有很好的增强作用,可以提高试件的承载力。对试验结果的分析表明,轴压比可以提高试件的抗弯承载力,钢管和CFRP管的变形协调一致。计算表明:试件强度均有一定退化;轴压比和纵向CFRP增强系数的增大可以提高试件的刚度,同时减缓刚度退化;轴压比在一定范围内有利于试件的抗震。
The hysteretic performance tests of 8 CFRP-CFST members were carried out. The test results show that the longitudinal CFRP steel tube concrete has a good enhancement, can increase the bearing capacity of the specimen. The analysis of the test results shows that the axial compression ratio can improve the flexural capacity of the specimen, and the deformation of the steel tube and the CFRP tube is consistent. The calculated results show that the strength of the specimens decreases to a certain degree. The increase of the axial compression ratio and the longitudinal CFRP increase the stiffness of the specimens and slow down the stiffness degradation. The axial compression ratio is in favor of the specimens in a certain range.