CFRP布约束方形圆弧化柱应力应变关系的研究  

CFRP Cloth Constraint Square Arc Column Stress-strain Relationship of Research

作　　者：郑玉今[1] 

机构地区：[1]延边大学工学院,结构工程学科吉林延吉133002

出　　处：《山东工业技术》2013年第10期207-209,共3页Journal of Shandong Industrial Technology

摘　　要：CFRP布加固方形柱时不直接加固方形柱,而截面简单处理成圆弧化截面后约束柱能大大改善柱轴压性能。本文对CFRP布约束混凝土方形柱与约束圆弧化柱分别进行了轴压性能实验,分析了其破坏形态与破坏原因;展开了圆弧化柱优于方形柱的原因分析。作为圆弧化处理柱的理论补充,研究了应力-应变关系,其中给出了强、弱约束分界点的判断式以及转折点应力、应变的计算公式;借鉴已有文献典型的应力-应变关系模型,进行了理论数据与实验数据的对比,具有良好的精度。Carried on the axis after the CFRP cloth restraint concretes rectangle column and the circular arc processing concretes rectangle column to press the performance test, has studied the CFRP cloth restraint square cylinder and the circular arc processing column＇s axis compressed stress and axial, between the lateral strain change curve. Elaborated the CFRP cloth restraint concrete column stress principle and the destruction shape; Has discussed the CFRP cloth restraint concrete column sidewise restraint mechanism. And made a performance contrast between square cylinder and circular arc processing column , in the concretes rank different and under reinforcement quantity dissimilar condition; Analyzed the reason why the circular arc processing section to surpass the squarer bevel edge section; Put forward the future CFRP cloth restraint concretes square cylinder＇s circular arc processing proposal.

关 键 词：碳纤维布 方形截面柱 圆弧化处理截面柱 侧向约束 应力-应变 

分 类 号：TU375.3[建筑科学—结构工程]