GFRP套管钢筋-钢骨混凝土短柱轴压承载力研究  

Analysis on the axial ultimate bearing capacities of GFRP tubed short columns filled with steel-reinforced concrete

作　　者：王娟[1] 赵均海[1] 朱倩[1] 孙珊珊[1] 刘朝[1] 

机构地区：[1]长安大学建筑工程学院,西安710061

出　　处：《建筑结构》2012年第10期102-105,共4页Building Structure

基　　金：国家自然科学基金项目(50908015);陕西省自然科学基金项目(2011JM7002);高等学校博士学科点专项科研基金项目(20110205130001)

摘　　要：应用双剪统一强度理论分析轴心受压GFRP套管钢筋-钢骨混凝土短柱的核心混凝土及钢骨的强度,通过综合考虑GFRP套管及钢筋对核心混凝土强度的增强作用,推导出了GFRP套管钢筋-钢骨混凝土短柱轴压承载力公式,将该公式计算结果与相应文献试验结果及已有公式计算结果进行了对比,结果吻合良好。在此基础上分析了材料拉压比、配筋率、混凝土强度及套管厚度对极限承载力的影响。In order to investigate the axial ultimate bearing capacities of GFRP tubed short columns filled with steel-reinforced concrete,the twin shear unified strength theory was carried out to analyze the strength of core-concrete and steel.Considering the enhanced role of GFRP tube and reinforcement comprehensively,the formula on the axial ultimate bearing capacities of GFRP tubed short columns filled with steel-reinforced concrete was proposed.By the comparison with the results calculated by the formulas and the test results,it shows a good accordance.On the basis of these works,several factors which may have effects on the bearing capacities were analyzed,such as tension-compression strength ratio,ratio of reinforcement,strength of concrete and thickness of tube.

关 键 词：统一强度理论 GFRP套管 钢筋-钢骨混凝土 极限承载力 

分 类 号：TU398.9[建筑科学—结构工程]