轴向循环荷载下FRP-混凝土-钢管组合方柱性能研究  

Behavior of FRP-concrete-steel Tube Composite Square Columns Subjected to Cyclic Axial Compression

作　　者：王代[1,2] 高丹盈[1] 王勇智[2] 

机构地区：[1]郑州大学新型建材与结构研究中心,河南郑州450002 [2]中州大学工程技术学院,河南郑州450044

出　　处：《郑州大学学报（工学版）》2014年第4期1-4,13,共5页Journal of Zhengzhou University（Engineering Science）

基　　金：国家自然科学基金资助项目(50579068);郑州市科技攻关资助项目(112PPTGY251-6)

摘　　要：通过8根方柱的循环轴压试验,重点研究了加载方式、钢管空心率、径厚比对FRP-混凝土-钢管组合方柱轴压性能的影响.结果表明,加载方式对组合方柱的峰值荷载及轴向应力-应变曲线外包络线影响不显著,循环荷载下柱试件与相应单调轴压下试件的极限状态类似.相较空心率,内钢管径厚比对组合方柱在轴向循环荷载下的峰值荷载有显著影响.Through the experiments of eight FRP-concrete-steel tube composite square columns subjected to cyclic axial compression, the effects of the loading scheme, the void ratio and the diameter-to-thickness ratio of the inner steel tube on the axial compression behavior were investigated. The test results show that the effect of loading scheme on the axial stress-strain envelope and peak load is insignificant, and ultimate state of FRP- concrete-steel tube composite square columns subjected to cyclic axial compression is very similar to that of composite square columns subjected to monotonous axial compression. Compared with the void ratio, the diam- eter-to-thickness ratio of the inner steel tube has apparent influence on the peak load of FRP-concrete-steel tube composite square columns subjected to cyclic axial compression.

关 键 词：FRP 循环荷载 轴压试验 组合柱 方形截面 

分 类 号：TU398.9[建筑科学—结构工程]