结构工程师2017，Vol.33Issue(4)：40-46,7.
基于梁式试验的CFRP布-混凝土界面剥离承载力计算模型研究
Study on Calculation Model of Interfacial Debonding Bearing Capacity of the CFRP-concrete Interface Based on Beam Tests
摘要
Abstract
Beam tests were applied to study bonding performance between carbon-fiber-reinforced polymer (CFRP) sheets and concrete.Monotonic loading tests on 8 beam specimens were carried out considering the factors including concrete strength,the width ratio of CFRP sheets to concrete surface,the length ratio of externally bonded CFRP sheets to concrete surface and the treatment of concrete surface.The test results showed that when concrete strength was low,although the concrete surface was not notched,debonding occurred in the concrete near the CFRP sheets-concrete interface,while debonding occurred in the concrete near interface when the notch treatment was done on the high-strength concrete surface.Based on test results,the influence law of concrete strength,the width ratio of CFRP sheets to concrete surface and the length ratio of externally bonded CFRP sheets to concrete surface on the debonding bearing capacity were analyzed.In addition,the calculation model of deboning bearing capacity of the CFRP-concrete interface was proposed,and the calculation formulas of model coefficients were derived by fitting test results.This model applies to the calculation of debonding failure load of the interface between CFRP sheets and high strength concrete.关键词
剥离承载力/计算模型/CFRP布加固/界面粘结性能/梁式试验Key words
debonding bearing capacity/calculation model/CFRP sheets reinforcement/interfacial bonding property/beam tests引用本文复制引用
李可,李思远,王新玲..基于梁式试验的CFRP布-混凝土界面剥离承载力计算模型研究[J].结构工程师,2017,33(4):40-46,7.基金项目
国家自然科学基金青年基金项目(51608489) （51608489）
河南省科技攻关项目(172102210496) （172102210496）
中国博士后基金(2017M610904) （2017M610904）
河南省高等学校重点科研项目(17A560010) （17A560010）
河南省科技攻关项目(172102310177) （172102310177）
