Analysis of the Local Stress at the Most Unfavorable Position of Beam-arch Combination Bridge with V-shaped Rigid-frame

Beam-arch combination bridge with V-shaped rigid-frame is complicated.The bridge equivalent to the beam structure or the truss structure is widely used in engineering based on the small deformation and material linear elastic assumptions when analyzed with the finite element method.In order to get accurate local stress distribution of the V-shaped rigid-frame and bracket,a 3D finite model of Yong-an bridge was built with Abaqus and discretized with solid elements,in which solid elements were adopted for discrete analysis of concrete,link elements for rebar,spring elements for pile foundation.The most unfavorable position and the corresponding stress distribution under different work conditions were investigated.All the investigations will provide guidance for design and construction.The results indicate that the whole bridge is safe except for the bracket contact positions where stress levels were lower.