Paper Title:

A Research on Prediction and Control of Welding Distortion and Residual Stress for an All-Welded Steel Bridge

Periodical Advanced Materials Research (Volumes 446 - 449)
Main Theme Trends in Civil Engineering
Chapter Chapter 2: Bridge Engineering
Edited by Xiuli Du, Jianjun Zheng, Weiming Yan, Yue Li and Jianwei Zhang
Pages 1076-1084
DOI 10.4028/www.scientific.net/AMR.446-449.1076
Citation Xing Fei Yan et al., 2012, Advanced Materials Research, 446-449, 1076
Online since January, 2012
Authors Xing Fei Yan, Lei Shi, Liang Zhou
Keywords Distribution of Residual Stress, Steel Bridge, Thermal Elasto Finite Element Analysis, Welding Distortion
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A typical case of integral all-welded panel joints on Shanghai Minpu Second Bridge is discussed in this paper. The prediction of welding residual stresses at joints is achieved by thermal elasto finite element analysis, and the research reveals that a proper scheme of multi-layer welding craft will reduce welding distortions and residual stresses through mutual offset. The welding distortions at upper and lower chord joints (Type I) and those of the overall structural model are predicted with the distribution of residual stresses obtained. The research aims to provide a theoretical basis for the control of welding distortion, the optimization of welding craft and the constitution of optimal assembly welding craft.

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