Abstract
Recently, the construction number of steel girder bridge using thick plates has been increasing. It is afraid that residual stress in the thick plates affects the load carrying capacity of the girder. Therefore, this study aims to measure the distribution of residual stresses in the thick plates by mechanical cutting method. Herein, simplified measurement method is proposed for the measurement in the thickness direction. As a result, it was found that the slope of stress distribution in the thickness direction becomes large as the thickness of the plate increases. Then, after considering the equilibriums of residual stress three-dimensionally, the residual stress was introduced into a finite element analysis model, which is the modeling of an existing bridge at the intermediate support. It was confirmed that residual stress in the thick plate does not affect the load carrying capacity of steel girder in bending.
