首页|Numerical Simulation Analysis of Welded Joints in Arch Ribs of Large Span Steel Pipe Arch Bridges

Numerical Simulation Analysis of Welded Joints in Arch Ribs of Large Span Steel Pipe Arch Bridges

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In order to study the residual stress distribution law of welded joints of arch ribs of large-span steel pipe concrete arch bridges,numerical simulation of temperature,stress and strain fields based on ABAQUS for welded joints of arch-ribbed steel tubes using 7-,8-and 9-layer welds is carried out and its accuracy is demonstrated.The steel pipe welding temperature changes,residual stress distribution,different processes residual stress changes in the law,the prediction of post-weld residual stress distribution and deformation are studied in this paper.The results show that the temperature field values and test results are more consistent with the accuracy of numerical simulation of welding,the welding process is mainly in the form of heat transfer;Residual high stresses are predominantly distributed in the Fusion zone(FZ)and Heat-affected zone(HAZ),with residual stress levels tending to decrease from the center of the weld along the axial path,the maximum stress appears in the FZ and HAZ junction;The number of welding layers has an effect on the residual stress distribution,the number of welding layers increases,the residual stress tends to decrease,while the FZ and HAZ high stress area range shrinks;Increasing the number of plies will increase the amount of residual distortion.

steel pipe and concrete arch bridgearch ribmulti-pass weldingresidual stressnumerical simulation

Deer He、Nianchun Deng、Xiuning Peng

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School of Civil Engineering and Architecture,Guangxi University,Nanning 530004,China

Guangxi Key Laboratory of Disaster Prevention and Reduction and Engineering Safety,Nanning 530004,China

National Natural Science Foundation of ChinaGuangxi Key Technology Research and Development ProgramGuangxi Science and Technology Major Special Project

52268048GUI-KEAB23026101GUI-KEAA22068066

2024

10.11916/j.issn.1005-9113.23038

哈尔滨工业大学学报(英文版)
哈尔滨工业大学

哈尔滨工业大学学报(英文版)

影响因子：0.238
ISSN：1005-9113
年,卷(期)：2024.31(3)
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