FRP管高强混凝土轴压力学性能研究  

Mechanical Behaviors Study of FRP Tube Filled with High-Strength Concrete Subjected to Axial Loading

作　　者：周乐[1,2] 王连广[1] 秦国鹏[1] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110004 [2]沈阳大学建筑工程学院,辽宁沈阳110044

出　　处：《沈阳建筑大学学报（自然科学版）》2009年第1期121-124,共4页Journal of Shenyang Jianzhu University：Natural Science

基　　金：教育部博士点基金项目(20050145012);辽宁省教育厅科技攻关项目(20060708)

摘　　要：目的研究FRP管高强混凝土轴压柱的受力性能,以利于实际工程的设计.方法通过4根FRP管高强混凝土组合柱轴压试验,探讨组合柱的破坏特征及受力特点,研究FRP管纤维缠绕角度、FRP管厚度等参数对组合柱受力性能的影响.基于叠加法,分析混凝土和FRP管对承载力的贡献.结果组合柱承载力随着FRP管壁纤维缠绕角度的减小而增加,随着FRP管壁厚度增加而增加,采用叠加法研究并推导出了一组更为合理的FRP管高强混凝土组合柱轴心受压承载力计算公式.结论理论计算结果与试验结果吻合良好.To investigate the mechanical behaviors of FRP tube filled with high-strength concrete subjected to axial loading is convenient for use. This paper presents the experimental research of 4 FRP tube columns filled with high-strength concrete subjected to axial loading. The damage and the mechanical characteristics of composite members are studied. The effects of the FRP tube fiber tangle angle, and the influence of FRP tube thickness on the mechanical behaviors of FRP tube columns filled with high-strength concrete are studied. The contribution of concrete and FRP tube to bearing compressive capacity is analyzed on the basis of superposition method. The experimental results have showed that the bearing compressive capacity of composite columns obviously increases with the decrease of the fiber tangle angle, and the bearing compressive capacity of composite columns increases with the thickness increase of FRP tube. A set of reasonable formulas for FRP tube columns filled with high-strength concrete subjected to axial load are proposed. The theoret- ically calculated results agree well with the experimental results.

关 键 词：FRP管 高强混凝土 轴心受压 力学性能 

分 类 号：TU528.59[建筑科学—建筑技术科学]