Modeling of Fatigue Life of FRP-concrete Interface

摘要：

　　The long-term performance of fiber reinforced polymer (FRP) strengthened structures subjected to cy clic loading depend directly on the fatigue behaviour of the steel reinforcement, FRP, as well as the FRP-to concrete interface.This study focuses on the behavior of the interface between FRP and concrete of various bonding systems under fatigue conditions.The different models used for evaluating shear stress along the en tire bond length of FRP-concrete interfaces due to cyclic loading were first reviewed.Experimental results of 118 specimens collected from previous publications were analyzed to propose a new model and verify the ac curacy of the existing models.The results show that the mean values, the corresponding coefficients of varia tion and the coefficients of correlation by the suggested model are O.99, 10.16% and O.891 respectively,which indicates the proposed model of fatigue life of FRP-concrete interface under cyclic load achieves higher accuracy compared to previous models, The resuhs also indicate that the externally bonded specimens did not fail after 106 cycles with the maximum shear stress limited to 0.57.

作者: Ahmed M.Sayed Xin Wang Zhishen Wu

作者单位: Southeast University, Nanjing , Jiangsu , China

会议类型: 国际会议

会议名称: The 5th International Symposium on Innovation & Sustainability of Structures in Civil Engineering (ISISS2013)(第五届创新和可持续发展土木工程结构国际学术研讨会)

会议地点: 哈尔滨

会议语种:英文

页码: 245-254

在线出版日期: 2013-07-06（万方平台首次上网日期，不代表论文的发表时间）