Shear Buckling Test and Prediction of Shear Load-carrying Capacity for Steel Girder Bonded CFRP on Its Web

摘要

Loss of cross section due to corrosion is a main factor in deterioration of steel bridges. Therefore,rncarbon fiber reinforced plastic (CFRP) is paid to attentions for repairing and reinforcing the steelrnbridges since CFRP is light weight, high strength and high durability. Although many researchesrnrelating to this topic have been reported so far, previous researches mainly focused on thernapplication of CFRP to axial or bending members. On the other hand, most of the corrosion is foundrnon web at the end of main girders. Investigations on repairing and reinforcing corroded web usingrnCFRP have been reported few. In this research, shear buckling test for steel girder bonded by CFRPrnsheets on web is carried out. Low elastic putty layers are inserted between steel and CFRP sheets inrnorder to improve the performance of out-of-plane deformation. An evaluation method of shearrnstrength of the girder is also proposed.