Project Design And Analysis Research Of Large-span Prestressed Concrete Bridges With Continuous Rigid Frame Structure In Deep Water Condition

At the present day, prestressed concrete bridges with continuous rigid frame structure is adopted more and more in highway or railway bridgework. because of frame in reason and clear stress.On the basis of the Xiaojingsan Bridge in Zhejiang province, the author designed and analyzed a typical large-span prestressed concrete bridge with continuous rigid frame structure, including defining the main bridge's length, choosing the style of foundation in deep water, optimizing the size of section and the arranging of prestressed steel rods, etc. In addition, the author analyzed the thermal stress of trunk section by means of building the 3D finite element model to analyze. The substructure member strength of bridge in nonlinearity state is calculated and the static character is analyzed. It is scientific assumptions for the design of the bridges.