CFRP加固高温后圆钢管混凝土结构轴压力学性能分析  

Mechanical Properties of Concrete-Filled Steel Tube Columns Strengthened with CFRP Under Axle Load After High Temperature

作　　者：王茂龙[1] 刘明[2] 朱浮声[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]沈阳建筑大学土木工程学院,辽宁沈阳110168

出　　处：《东北大学学报（自然科学版）》2006年第12期1381-1384,共4页Journal of Northeastern University(Natural Science)

基　　金：辽宁省自然科学基金资助项目(20022005)

摘　　要：在恒定高温作用后,对12个圆钢管混凝土短柱试件进行CFRP加固后的轴压力学性能分析.通过轴压承载力试验,研究了不同恒温及不同约束效应系数时CFRP-圆钢管-混凝土结构的轴压力学性能和变化规律.试验数据对比分析表明,高温作用后的圆钢管混凝土承载力和弹性模量随温度升高而降低,采用CFRP加固的高温受损构件力学性能明显得到改善.在综合分析基础上,利用简化公式计算的结果与试验分析结果吻合较好.The mechanic properties and behavior of 12 concrete-filled short steel tube columns strengthened with carbon-fiber-reinforced polymer(CFRP) sheets wrapped externally as specimens after the effects of different constant high temperatures were investigated experimentally under axial loads with different restriction coefficients.The temperature,concrete compressive strength and number of CFRP layers are the main parameters to investigate.Comparisons were made for the standard section and equivalent sections wi...

关 键 词：CFRP-圆钢管-混凝土 高温 承载力 弹性模量 约束系数 

分 类 号：TU398.9[建筑科学—结构工程]