Behavioral Analysis Of Reinforced Concrete Tied Arch Bridge

Tied arch bridge is a bridge that has the outline of concinnity and is fit for building in the city or on the soft clay ground, which possesses the important status in the domestic and foreign history of bridge building. Its construction method and design theory are already comparatively mature and perfect. But, with the quick development of the modern society, new materials and construction method are more and more, the traffic of flux and vehicle's load constantly go up. These new situations challenge the tied arch bridge's more development. Moreover, the tied arch bridge's structural analysis of internal force is more difficult than normal bridge system because it is a over-stable structural system that is composed of arch and beam. Specially, the combination of arch and beam receives many forces from many directions and is more difficultly analyzed. So, it is necessary and exigent to more study the tied arch bridge's structural analysis of internal force. This paper is based upon the crewel railway reinforced concrete tied arch bridge which is the most span in China now. It spans the third loop road in Chengdu. Through the plane and special finite element program, this thesis take some particular theory analysis about the structural mechanics capability of the arch bridge in the construction and business phase and the local mechanics of the combination of arch and beam. Then, it demonstrates these analysis according to the present criterion. At last, it is expected to offer some necessary theory data for the bridge's construction control and the design of node model experimentation.