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J. Hefei Univ. Tech. (Nat. Sci.)

合肥工业大学学报(自然科学版)

JOURNAL OF HEFEI UNIVERSITY OF TECHNOLOGY (NATURAL SCIENCE)

Competent Authorities: Ministry of Education of the People's Republic of China

Sponsor by: Hefei University of Technology

ISSN 1000-1646, CN 34-1001/N

Analysis of welding stress and deformation of old steel bridge reinforcement based on inherent strain

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基于固有应变的旧钢桥加固焊接应力和变形分析

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), Jul.2024, Vol.47 No.7: 1003-1008

DOI: 10.3969/j.issn.1003-5060.2024.07.022

Authors

DU Yanghua, LUO Yu, ZHAO Sheng, OHSAAWA Naoki

(School of Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China)

Abstract and Keywords

Abstract: In this paper, for the actual reinforcement and repair of a large-scale bridge, the self-developed welding deformation analysis system software was used to analyze the welding stress and deformation of the bridge under different processes and working conditions. The distribution rule of the deformation and stress of the bridge under different conditions is obtained, and the safety of the large-scale bridge reinforcement welding construction plan is confirmed. At the same time, this paper also provides technical solutions for the optimization of the actual welding process.

Keywords: bridge welding reinforcement; welding stress and deformation; inherent strain; numerical simulation; welding process

作者信息

杜洋华，罗宇，赵晟，大沢直樹

（上海交通大学船舶海洋与建筑工程学院，上海200240）

摘要和关键词

摘要: 文章针对某大型桥梁实际加固修复焊接,利用独自开发的焊接变形分析系统软件,预测不同工艺和工况条件下大桥的应力和变形,获得不同条件下桥梁变形和应力的分布规律,确认该大型桥梁加固焊接施工方案的安全性。同时,该文为实际焊接工艺的优化提供了技术解决方案。

关键词: 桥梁焊接加固；焊接应力变形；固有应变；数值模拟；焊接工艺

Funding

上海交通大学和大阪大学合作种子基金资助项目（2019-07）

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