Research On Scheme Of Steel-prestressed Concrete Continuous Beam Bridge Crossing A Channel

Choosing a appropriate type of bridge in Zhejiang province which the area is flat and exits a lot of waterways to speed up the construction schedule and reduce the project cost is a important question which the bridge designers should consider. The new type of bridge Steel-prestressed concrete composite continuous beam bridge take full advantage of the high compressive strength of concrete and steel light weight and high strength characteristics and improve the capacity of the concrete bridge crossing the waterways, and reduce the whole project cost. It shows a great prospects.Based on the latest research, learn from the research and technical information, on the basis of the G318National Highway Longbridge Bridge engineering background, steel-prestressed concrete mixed continuous box girder bridges in the plain areas of design and construction and other technologies related research, its main contents are as follows:First, based on the actual works of domestic and foreign steel hybrid girder bridge, for example, related summary analysis of this new type of steel-concrete beam bridge design and construction of the bridge type experience。Secondly, design engineering examples at home and abroad based on the steel-concrete beam bridge in the design of the bridge type selection, detail design of steel box girder and the Ministry of Steel Mixed-related research. Also a key part of the construction of steel-concrete girder bridge analysis, including the production of transportation of steel box girder, steel box girder lifting and steel mixed with a combination of segments of the construction technology.At last, according to the band of the steel from components bridge of complex loading characteristics, using the spatial finite element analysis method to build the bridge section of the local steel combined with finite element model, analysis the load condition and calculate of the length of the steel box girder of choice test, also analysis the effect of the shrinkage and creep on the deformation and stress of steel girder bridge on the distribution of the Stress.