FRP片材与砼粘结界面剥离破坏过程的数值分析  

Numerical analysis of debonding failure process in concrete layer adjacent to FRP

作　　者：杨菊英[1] 黄志强[2] 祝兴虎 

机构地区：[1]大连大学材料破坏力学数值试验研究中心,辽宁大连116622 [2]沈阳工业大学建筑工程学院,沈阳110178 [3]大连力软科技有限公司,辽宁大连116600

出　　处：《沈阳工业大学学报》2008年第6期705-711,共7页Journal of Shenyang University of Technology

基　　金：国家自然科学基金资助项目(10672028)

摘　　要：针对FRP-砼界面粘结性能和抗拉裂能力问题进行了研究.基于FRP与砼界面面内剪切试验的结果,采用材料真实破裂过程分析〔RFPA〕系统,对FRP-砼界面粘结性能进行了数值试验.为了真实地模拟砼材料的力学性能,该数值模型考虑了由颗粒、砂浆和界面三相组成的复杂砼结构、FRP单元和砼单元直接连接等问题.结果表明,通过砼单元的破坏来模拟FRP和砼界面的宏观剥离破坏过程,其数值试验结果再现了FRP-砼界面的剥离破坏全过程.The interracial behavior between FRP and concrete is the key problem for the application of FRP in strengthening concrete structures. The numerical analysis on the interfacial behavior between FRP and concrete was performed with the RFPA （real fracture process analysis） system. In the numerical model, it is considered that the complex concrete consists of granule, mortar and interface in order to simulate mechanical performance of concrete. Concrete elements are connected with FRP elements directly. The debonding failure process in the concrete layer adjacent to FRP was simulated with the fracture of concrete elements. The numerical experimental results can recur the debonding failure process in the concrete layer adjacent to FRP.

关 键 词：纤维增强复合材料 砼 界面 剥离 真实破裂过程分析 

分 类 号：TU352[建筑科学—结构工程] TU37