Stability analysis of H-section steel arch considering effect of welding residual stress

Abstract

The steel arches with weld H-shaped sections are frequently used in various engineering structures. The welding procedure will produce residual stress, which affects the stability of the arches. This paper presented a numerical model to explore the influence of welding residual stress on the stability behavior of the steel arch. Then, the buckling load and structural deformation of the steel arch under uniform load were obtained through the static analysis, and the stability performance of entire structure was discussed. Furthermore, in order to compare the mechanical properties of the arch simulated by different elements, the shell element and beam element were used respectively in the finite element modal to obtain ultimate bulking load of the structure with the same section. It is concluded that the existence of welding residual stress reduced the ultimate bearing capacity of steel arch under uniform load.