植筋法加固梁新旧混凝土界面破坏形态研究初探  

Preliminary study for failure pattern of interface between existing and new concrete of beams in planting bar strengthening

作　　者：鄢飞[1] 

机构地区：[1]福建省抗震防灾技术中心,350001

出　　处：《福建建筑》2008年第12期24-26,共3页Fujian Architecture & Construction

基　　金：福建省青年科技人才创新基金项目(2006F3020)

摘　　要：采用界面剪跨比来反映植筋法加固梁新旧混凝土界面弯矩和剪力的关系。通过试验,研究同时存在弯矩和剪力的植筋法加固梁新旧混凝土界面的破坏形态。研究表明,当界面剪跨比为1.51时,即使植筋法加固梁新旧混凝土界面没有进行任何处理,新旧混凝土界面抗剪承载力大于梁斜截面抗剪承载力,其破坏形态为梁斜截面破坏。Interface shear-span ratio was proposed to reflect the moments-shears relationship of the interface between existing and new concrete in planting bar strengthening beams.The failure pattern of the interface between existing and new concrete in planting bar strengthening beams,in which moments and shear forces are simultaneously available,was investigated by test.The research results reveal that,when the interface shear-span ratio is 1.51,even that any treatment of the interface between existing and new conc...

关 键 词：植筋法 新旧混凝土界面 破坏形态 界面剪跨比 

分 类 号：TU375.1[建筑科学—结构工程]