EBR FRP-STRENGTHENED BEAMS:A FEA STUDY ON END-PLATE EFFECTS

摘要：

　　This paper investigates numerically the effectiveness of externally bonded reinforcement fibre reinforced polymers(EBR FRP)plates bonded on reinforced concrete(RC)beams.Finite elment analysis(FEA)was conducted on a case study beam to investigate stress concentrations in the concrete,steel and FRP,as well as at the FRP-RC bonded interface.The FEA is then used to carry out a parametric study that shows that increasing the thickness or the elastic modulus of the FRP plate affects the efficiency of the FRP plate bonding,thus making it susceptible to earlier debonding.The influence of the FRP plate stiffness on the interfacial normal and shear stresses is also examined analytically.Based on the FEA results,a “tapering technique is suggested to prevent bond failures,which in turn increases the capacity of FRP plate bonded RC beams.This technique is extremely sucecsful in reducing the stresses by up to 15%which responsible for concrete rip-off and peel-off failures.

关键词： EBR Externally bonded FRP Plate boding Tapering technique FEA

作者: Thanongsak Imjai Jirawat Phumkesorn Withit Pansuk Reyes Garcia

作者单位: Dept.of Civil Engineering,Rajamangala University of Technology Tawan-Ok,Bangkok,Thailand Dept.of Civil Engineering,Chulalongkorn University,Bangkok,Thailand Dept.of Civil Engineering,The University of Sheffield,Sheffield,UK

会议类型: 国际会议

会议名称: the Sixth Asia-Pacific Conference on FRP in Structures (APFIS2017)(第六届亚太纤维增强复合材料结构工程国际会议暨第十届全国建设工程FRP应用学术交流会)

会议地点: 新加坡

会议语种:英文

页码: 1-5

在线出版日期: 2017-07-19（万方平台首次上网日期，不代表论文的发表时间）