碳纤维布约束混凝土单轴受压时的应力-应变关系  

Compressive Stress-Strain Relationship of Concrete Confined by Carbon Fiber Composite Sheets

作　　者：顾祥林[1] 李玉鹏[1] 张伟平[1] 欧阳煜[2] 

机构地区：[1]同济大学,上海200020 [2]上海大学,上海200072

出　　处：《结构工程师》2006年第2期50-56,共7页Structural Engineers

基　　金：上海市科学技术委员会科研攻关项目(编号:032112060)

摘　　要：通过32个混凝土圆形试块的轴压试验,研究了碳纤维布约束混凝土的受压性能。分别讨论了混凝土强度等级、碳纤维布加固率、截面尺寸对碳纤维约束混凝土性能的影响。建立了力学意义明确且精度满足应用要求的碳纤维约束混凝土单轴受压时的应力-应变关系。Through axially compressed tests of 32 cylinder concrete columns, the performance of concrete confined by carbon fiber composite sheets is studied. The different effects of the concrete strength, carbon fiber strengthening ratio and the sectional dimensions on the behavior of the concrete are discussed respectively. Finally, a constitutive model of concrete confined by carbon fiber composite sheets is proposed, which has clear mechanical meaning and satisfied accuracy.

关 键 词：碳纤维布 约束混凝土 加固率 尺寸效应 应力-应变关系 

分 类 号：TU375[建筑科学—结构工程]