方CFRP-钢管混凝土(S-CFRP-CFST)受弯性能分析  

ANALYSIS ON FLEXURAL PERFORMANCE OF THE CONCRETE FILLED SQUARE CFRP-STEEL TUBE (S-CFRP-CFST)

作　　者：李佳[1] 王庆利[1] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168

出　　处：《工程力学》2013年第B06期142-148,共7页Engineering Mechanics

基　　金：教育部新世纪优秀人才支持计划项目(NCET-08-0865)

摘　　要：应用ABAQUS软件建立有限元模型并模拟了方CFRP-钢管混凝土(S-CFRP-CFST)受弯构件的挠度曲线和钢管应变,验证了该模型的有效性。分析了此类受弯构件的受力全过程,研究了各组成材料的应力、应变和变形等的发展规律,探讨了钢管与混凝土的相互作用力,得到的相应结论与试验现象吻合良好。给出了S-CFRP-CFST抗弯承载力指标及其表达式,应用该式可以合理计算其承载力。The FE model is established by using ABAQUS software and the deflection curve and steel tube stress of concrete filled square CFRP-steel tubular （S-CFRP-CFST） beams are simulated, and it shows that this model is effective. The whole loading process of these kinds of flexural specimens is analyzed, the development of stress, strain and deformation of the materials are studied, and also, the interaction forces between the steel tube and the concrete are discussed. Corresponding conclusions coincide with the test results very well. The index of flexural strength and the equation for calculating the index of the composite members are proposed, which can predict the strength reasonably.

关 键 词：方CFRP-钢管 内填混凝土 受弯性能 有限元模拟 机理分析 承载力 

分 类 号：TU398.9[建筑科学—结构工程]