| The Dongping Bridge is a new arcuated built-up system bridges. Half through steel box tied arch and prestressed concrete continuous beam were connected directly, and then the bridge becomes the Cooperation System Bridge with vice-arch. This paper takes Dongping Bridge as engineering background and the behavior of static and dynamic is analyzed by the finite element program. Some helpful conclusions and suggestions are provided for similar complicated structures. Some helpful conclusions and suggestions are provided for similar complicated structures. The main contents and final conclusions of this thesis are as follows:(1) In view of characteristic of Dongping Bridge, we made an inquiry into the major parameters, such as ration of height and span ( 1/4.55 ), equation of arch axis( y = 642.38(ch0.00302x-1) )and so on. Through emulating the whole construction process the inner force ,deformation and stress under dead load and live load are known. The resolute indicates that the entire bridge is reasonable.(2) By establishing another two commeasurable model, the influence of vice-arch and beam-arch cooperation on dead load,live load and tension force of tie-bar was analyzed. The results indicated that this kind of cooperation system arch bridge is the economical, aesthetic and suitable project for the large-span situation.(3) Through the three dimension simulation dynamical properties calculation, we get the frequency and vibration mode of this bridge and determine the effects of arch-beam cooperation and vice-arch on dynamic characteristics.(4) To prevent the local failure of structure and offer reference for optimums structural design, and the distribution of Local stress were get through simulating node with complex stress and Steel-concrete composite deck with PBL.
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