Welding Process Influence on Welding Deformation of Orthotropic Steel Bridge Slab

2018 International Conference on Civil and Hydraulic Engineering

土木建筑工程;水利工程

Cong, Gao^1 ; Libao, Xie^2 ; Jiansong, Wang^3 ; Duo, Liu^1 ; Jiandong, Zhang^1

JSTI GROUP, Nanjing, JIANGSU

211102, China^1

Jiangsu Provincial Department of Transportation Engineering Quality Supervision Bureau, Nanjing, JIANGSU

210001, China^2

Jiangsu Henglei Construction Co.LTD, Changzhou, JIANGSU

213000, China^3

关键词: Optimal combination;    Orthotropic bridge decks;    Residual deformation;    Sensitive parameter;    Thermoelastic analysis;    Trial-and-error method;    Welding deformations;    Welding parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/189/3/032070/pdf
DOI  :  10.1088/1755-1315/189/3/032070

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

Orthotropic bridge deck is the main structural form of steel box girder bridge deck. Due to the dense U-rib weld and complex structure, it is easy to produce large deformation during welding. At present, the determination of the amount of deformation is mainly based on the empirical value and the trial and error method. It is of great significance for welding deformation control to study the influence of welding process on welding deformation of orthotropic bridge deck and clarify the influence of welding parameters and welding sequence. Based on Marc software, the finite element thermoelastic analysis method is used to simulate the post-weld residual deformation of orthotropic bridge deck. The influence of welding parameters and welding sequence on welding deformation is analyzed, and the sensitive parameters affecting welding deformation are determined. The optimal combination of welding parameters was developed, and the reasonable sequence of U-rib welding was established, which laid a foundation for welding deformation control of orthotropic bridge deck.