CFRP条带加固对混凝土受扭构件开裂的影响  

THE EFFECTS OF CFRP STRAPS STRENGTHENING ON THE CRACKING OF RC TORSION MEMBERS

作　　者：朱虹[1] 张继文[1] 

机构地区：[1]东南大学RCPC结构教育部重点实验室,南京210096

出　　处：《工业建筑》2003年第10期72-74,共3页Industrial Construction

基　　金：国家自然科学基金重点项目 ( 5 0 2 3 80 3 0 );江苏省自然科学基金重点项目 (BK2 0 0 0 0 3 6-1);国家 863计划项目 ( 2 0 0 1AA3 3 60 10 )资助

摘　　要：试验研究表明 ,用CFRP条带加固钢筋混凝土受扭构件 ,对构件承载能力的提高有非常显著的作用。针对试验中的现象 ,从条带和结构胶两方面研究了CFRP条带加固对开裂的影响。弹性阶段有限元计算结果表明 ,CFRP条带本身对开裂扭矩的影响不大。通过对试验中条带加固的施工过程的分析得知 。The experiment done by the authors shows that the RC torsion members strengthened by CFRP straps have significant strength gain.This paper,focusing on the phenomenon occurred in the experiment course,studies the effects of CFRP straps strengthening on the cracking of RC torsion members at two aspects—CFRP straps,structural glue.The FEA result illuminates that the effect of CFRP straps themselves on the cracking torque is very small.Then by analyzing the construction progress of strengthening,it is concluded that the main factor influencing the cracking torque is the increase in concrete strength because of the glue′s infiltration.

关 键 词：钢筋混凝土 受扭构件 CFRP条带 受扭 有限元分析 渗透 抗拉强度 开裂扭矩 

分 类 号：TU375[建筑科学—结构工程]