TRC薄板加固RC梁受弯破坏特征试验研究  

Experimental research on flexural failure characteristics of reinforced concrete beams strengthened with textile reinforced concrete shefts

作　　者：支正东[1] 陈贺[1] 荀勇[1] 杨建明[1] 杜玉兵[1] 柏蕾[1] 

机构地区：[1]盐城工学院土木工程学院,江苏盐城224051

出　　处：《混凝土》2016年第8期23-26,共4页Concrete

基　　金：国家自然科学基金项目资助(51478408);住房和城乡建设部科技项目(2013-K4-42;2013-K4-41;2013-K7-4);江苏省产学研联合创新项目(BY2013057-05)

摘　　要：进行了跨中植筋与未植筋两种不同处理方案的共4根织物增强混凝土加固梁的抗弯试验,分析比较两种加固梁的破坏形态、荷载-挠度及荷载-应变特性、承载力特性,同时对加固梁黏结界面应力状态进行了理论分析,研究表明:黏结界面上存在剪应力,并且与截面上弯矩成正比;跨中植筋可以有效改善加固梁的破坏形态,提高极限承载力。Four strengthened beams with textile reinforced concrete sheets were experimentally investigated.The strengthened beams were were divided into two groups according to the planting bar or not in mid span, The failure pattern, relationship of load-deflection, relationship of load-strain, flexural capacity were analyzed.While reinforced beam bonding interface stress theoretical analysisl.The results show that exists on the shear stress in the bonding interface, and is proportional to the section on bending moment.Planting bar in mid span can improve failure pattern, increase the ultimate bearing capacity.

关 键 词：织物增强混凝土 加固 受弯特性 钢筋混凝土梁 植筋 

分 类 号：TU375.1[建筑科学—结构工程]