The Simulation In Construction State Of The Long-span Cable-stayed Bridge With Concrete Girder

There are a large number of prestressed concrete cable-stayed bridges in present China which have been completed or are being constructed, the building of the modern large-span cable-stayed bridge makes progress in the design theory of the bridges, structural analysis and the construction technology, meanwhile, it makes the construction control of the large-span cable stayed bridge become an important research topic.The construction supervision is making the cable-stayed bridge achieve the expectation just after construction through controlling the inner force and the line forms of the structure in constructing and constructed state and guarantees the security of constructing structures.The construction control simulation analysis of cable-stayed bridge is the foundation of the construction control, and it includes two parts: the determination of the finished bridge state and the determination of the construction state. The finished bridge state is one of the cable-stayed bridge research focuses.and in the course of constructing bridge, because the construction state directly concerns the construction techniques and the construction control, it shows out its much important practicality values. And because the finished bridge state associates directly with its construction state, so, it is very important to study how to obtain the proper bridge construction state.Making reference to the ZhongXian ChangJiang River Bridge construction, firstly, this paper studies the philosophy of the cable-stayed bridge construction control simulation analysis systematically, and pays much attention to the theory of simulating the construction process. Then on the basis of introducing the construction process of the ZhongXian ChangJiang River Bridge, a plane finite element analysis model for the construction process is established analyze the construction process simulation and make sure the rational finished bridge state and the rational constriction state. According to the construction analysis result, analyze structure stress and distortion of every construction stage. In this paper, I have established a three dimension finite element model for the bridge, to analyze dynamic characteristics and study the anti-seismic and anti-wind capacity of ZhongXian ChangJiang River Bridge.