CFRP-PCPs复合筋嵌贴加固钢筋混凝土梁的延性分析  

Ductility analysis of concrete beam strengthened with near surface mounted CFRP-PCPs

作　　者：张鹏[1] 牟晓辉[1] 邓宇[1] 钟卿瑜 刘闻冰 郭加加[1] 

机构地区：[1]广西科技大学土木建筑工程学院,广西柳州545006

出　　处：《混凝土》2014年第10期48-51,共4页Concrete

基　　金：国家自然科学基金项目(51168006)

摘　　要：基于现行混凝土结构设计规范中抗弯设计计算的基本原理,提出了嵌贴CFRP-PCPs复合筋加固混凝土梁截面延性的计算方法,并结合已做试验对其延性进行分析讨论。结果表明,CFRP筋有效预拉应变越大,其加固梁的延性系数逐渐减小;CFRP筋滞后应变越大,其加固梁的延性系数逐渐增大。Based on the fundamental theory of flexural design calculation of concrete structure,a calculation method of cross section ductility of concrete beam strengthened with near surface mounted CFRP-PCPs was presented,and analysis and discussion the ductility of concrete beams have been tested.The results showed that CFRP tendons effective pre-tensile strain greater,the ductility factor of strengthened beam decreased;CFRP tendons lagged strain greater,the ductility factor of strengthened beam increased.

关 键 词：CFRP-PCPs复合筋 嵌贴加固 延性 预应力 滞后应变 

分 类 号：TU528.01[建筑科学—建筑技术科学]