The Test Analysis of the Structure Bearing Capacity of a Box Arch Bridge

With the increase of bridge operation time, the bearing capacity of the bridge will decline under the influence of various factors. So, bearing capacity analysis and safety assessment are a very important problem in the period of using. This paper is based on a reinforced concrete box arch bridge to establish the finite element model of the bridge by using the finite element analysis software MIDAS-civil, and checked the bearing capacity of main arch ring. The results show that the ultimate bearing capacity of bending moment and axial force of the main arch ring box section meet the requirements of load grade of car-20 and trailer-100 under the limit state of carrying capacity of bridge.