The Influence of Specimen Separation on Residual Stress Distribution of Bridge Steel Butt Weld Joints
In order to study the effect of specimen separation on the residual stress distribution of bridge steel butt weld joint,a finite element model of Q345qDNH bridge steel butt welding was established,and the residual stress distribution under the influence of specimen separation was analyzed.The results showed that compared with the welded steel plate,the Mises stress values at the base material,weld toe and weld center were significantly reduced after welding,and the Mises stress difference at the weld was the most obvious,followed by the weld toe and the base material with the smallest Mises stress difference,and the stress in the longitudinal,transverse and thickness directions after separation was more evenly distributed along the weld direction.
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