Investigation of welding temperature field and residual stresses of corrugated steel web girders

Abstract

This paper proposes a new approach for obtaining the welding temperature field and stress distribution in a corrugated steel web girder. This approach was validated by comparing the control temperatures (obtained from finite element modelling of CO2 gas shielded welding) of a corrugated steel web girder with experimental findings. Moreover, the effects of different welding speeds on welding residual stress were analysed. The control point temperatures obtained using modelling corresponded closely with those of the observed data. The welding residual stress was primarily affected by the longitudinal residual tensile stress and increased as the distance to the weld decreased. The welding speed had an insignificant effect on the residual stress distribution but a significant effect on the residual stress peak. The findings of this study can serve as a reference for the analysis of the welding temperature and stress fields of corrugated steel web girders.