Mechanics Characteristics And Construction Control Of Prestressed Concrete Oblique-pulling Through Truss Bridge

The Prestressed concrete oblique-pulling through truss bridge is a relatively novel structure, which have the good structure characteristics of the cable-stayed bridge, the truss bridge and the rigid-framed structure bridge. The structure of the bridge is briefness, the approach of the force passing is clear, and the period of the construction is short. This type brige have more advantages than other middle span ones and big ones.Based on the Kaziwan Bridge, in order to know more about this type of bidge in detail, many correlation analysis were made on the mechanics characteristics and the control measures during the construction in this paper. Three models were establed for analysing the static characteristic by large-scale finite element analysis software. By the comparison between the diferent calculation results, the effect rules and the sensitivity of all the parameters are obtained. Different three-dimensioned models setted by the different parts of the structure were presented to the dynamic analyse. From the results of the dynamic analysis, the influence rule of the dynamic characteristic were getted, which variety with the change of the rigidity of piers, the landscape connection between the trusses and so on. The stability analysis of the bridge were carried out by some large-scale finite element analysis software. At last, many related construction technics were concluded, and the monitor and control project of the bridge was made for this type of bridge correspond to the fact.In conclusion, in order to popularize this type of bridge, some studyings about the mechanics characteristics, the stability and the construction technics were made. Many results and experiences are made and concluded for the design, construction, monitor and control of the similar type of bridges in future.