Application of stress-strength interference theory in butt welds

Abstract

Abstract: In order to solve the problem of whether the bearing capacity of steel bridge meets the actual demand, a method of applying stress-strength interference theory to the numerical analysis of butt weld of steel bridge is proposed in this paper. First of all, through static analysis of whole structure of the steel bridge, the stress states at different positions of main girder of the steel bridge can be obtained. Secondly, the reliability of butt weld under static loading is analyzed by the stress-strength interference theory. Finally, taking the butt welding of Q345 steel as an example, the feasibility of the proposed method is verified. The reliability of the butt weld with residual stress is predicted numerically as well.

Key words: butt weld, residual stress, numerical analysis, reliability

CLC Number:

O346

WEI Yao-bing, ZHANG Ru-peng, LIU Jian-hui, WANG You-liang. Application of stress-strength interference theory in butt welds[J]. Journal of Lanzhou University of Technology, 2020, 46(6): 168-172.

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