圆CFRP-钢管约束混凝土轴压力作用下的本构关系  

Constitutive Relationship of Concrete Confined by Circular CFRP-Steel Composite Tube Under Concentrical Load

作　　者：王庆利[1] 朱贺飞[1] 高轶夫[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：《沈阳建筑大学学报（自然科学版）》2007年第2期199-203,共5页Journal of Shenyang Jianzhu University：Natural Science

基　　金：沈阳建筑大学省级重点实验室开放基金(JG-200608);国家自然科学基金(50408032);辽宁省自然科学基金(20031001);辽宁省教育厅青年基金(2004F107)

摘　　要：目的进行圆CFRP-钢管混凝土轴压短柱的受力全过程分析以及圆CFRP-钢管混凝土构件的承载力简化计算,研究圆CFRP-钢复合管约束混凝土在轴压力作用下的本构关系.方法以试验研究为依据,对已有的圆钢管约束混凝土在轴压力作用下的本构关系进行修正,给出回归表达式以及简化式.结果得到了圆CFRP-钢复合管约束混凝土在轴压力作用下的本构关系表达式以及简化式.结论圆CFRP-钢复合管约束混凝土在轴压力作用下的本构关系可以划分为三阶段:弹性阶段,弹塑性阶段和下降段.The constitutive relationship of concrete confined by circular CFRP-steel composite tube under concentrical load is researched in order to fulfill whole loading procedure analysis and simplify the calculation of concrete confined by circular CFRP-steel tubular structures. Based on the experimental study, current constitutive relationship of concrete confined by circular steel tube under concentrical load is modified, and the curve fitting expression and simplified expression are proposed. The constitutive relationship of concrete confined by circular CFRP-steel composite tube under concentrical load could be defined as elastic, elastoplastic and softening stages.

关 键 词：圆CFRP-钢复合管 约束混凝土 本构关系 简化表达式 

分 类 号：TU393[建筑科学—结构工程]