Welding-induced Residual Stresses in U-Ribs of a Steel Bridge Deck

Authors

  • Huili Wang
    Affiliation

    National & Local Joint Engineering Laboratory of Bridge and Tunnel Technology, Dalian University of Technology, Dalian, 116023, China

    State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian, 116023, China

  • Sifeng Qin
    Affiliation

    College of Civil Engineering and Architecture, Dalian University, Dalian 116022, China

  • Ben Wang
    Affiliation

    Beijing General Municipal Engineering Design and Research Institute, Beijing 100082, China

  • Shaobo Zhou
    Affiliation

    National & Local Joint Engineering Laboratory of Bridge and Tunnel Technology, Dalian University of Technology, Dalian, 116023, China

https://doi.org/10.3311/PPci.18112

Abstract

To calculate the welding-induced residual stresses in U-ribs of the steel deck plate and conduct quantitative analysis of influential factors, the U-ribs of steel deck plate of Xinghai Bay Bridge was taken as the research object. In the ABAQUS finite element software, the local models of U-ribs of steel deck plate were established. Nodal body force loads, i.e., heat generation rate, of the double ellipsoidal heat source models were applied via the compiled subsidiary Dflux program. The welding process of the v-groove welds was simulated, to obtain the residual stresses distribution in the top plate and U-rib plates. The influence of thickness of top plate and angle of welding groove on the residual stresses in the U-ribs were studied. The results show that the welding-induced residual stresses calculated by the numerical method proposed in this paper agree well with the experimental data. The maximum residual stresses in the top plates and the U-rib plates all occur near the welds, which exceeds the yielding limitation of the material. As the thickness of top plate increases, the maximum values of residual stresses in the top plates and U-ribs increase. However, with the increase of groove angle, the maximum values of residual stresses in the top plates and U-rib plates decrease.

Keywords:

steel bridge deck; U-rib; double-ellipsoid heat source; residual stress; numerical simulation

Published Online

2021-11-02

How to Cite

Wang, H., Qin, S., Wang, B., Zhou, S. “Welding-induced Residual Stresses in U-Ribs of a Steel Bridge Deck”, Periodica Polytechnica Civil Engineering, 65(4), pp. 1239–1246, 2021. https://doi.org/10.3311/PPci.18112

Issue

Section

Research Article