圆CFRP-钢管混凝土(C-CFRP-CFST)压弯构件的静力性能  

STATIC PERFORMANCE OF THE CONCRETE FILLED CIRCULAR CFRP-STEEL TUBULAR (C-CFRP-CFST) BEAM-COLUMN

作　　者：王庆利[1] 周博[1] 谭鹏宇[2] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]沈阳新大陆建筑设计有限公司,辽宁沈阳110003

出　　处：《工程力学》2012年第A02期154-158,共5页Engineering Mechanics

基　　金：教育部新世纪优秀人才支持计划项目(NCET-08-0865);辽宁省高等学校优秀人才支持计划项目(2007R31)

摘　　要：以试验研究为基础,采用有限元法建立模型模拟了圆CFRP-钢管混凝土(C-CFRP-CFST)压弯构件的变形模态和轴力-中截面挠度曲线,计算结果与试验结果吻合良好。分析了受力全过程中混凝土、钢材和CFRP的应力、应变以及外管对混凝土作用力的发展过程。最后给出了试件承载力的计算表达式,应用该式的计算结果与试验结果吻合良好。On the basis of experimental study, a model was established by using FEM to simulate the deformed mode and axial load versus the mid-height deflection of a concrete filled circular CFRP-steel tubular （C-CFRP-CFST） beam-column, and the predicted results agree well with the tested ones. Developments of stress and strain of concrete, steel tube and CFRP, as well as the reaction force between the outer tube to the concrete during the whole loading process were analyzed. At last, a formula for calculating load bearing capacity of the C-CFRP-CFST beam-column were proposed, and the predicted results by using this expression agree well with those of tested.

关 键 词：圆CFRP 钢管 内填混凝土 压弯构件 静力性能 有限元模拟 理论分析 承载力 

分 类 号：TU398.9[建筑科学—结构工程]