The Static Simulation And Design Parameters Impact Analysis Of Long-span Continuous Rigid Frame Bridge

Along with the rapid development of road transport, the requirements of matching with route index, cost and route environment and other requirements are rising, prestressed concrete continuous rigid-frame bridge as an economical and practical bridge type occupies an increasing proportion in the urban and rural built or building bridges. Continuous rigid-frame bridge construction technology has increasingly matured, but in actual conditions, to make the bridge meet the practical function, facilitate construction and be more technical and economic always been an examining issue. This paper analysis comprehensively and thorough on long-span continuous rigid-frame bridge simulation, taking Hechi Tian'e County Bridge as a project engineering background, and calculating compared the construction process of two different closures; Focus on sensitivity of the main beam designing parameters ,and analysis the main factors and key technologies affecting the construction and control. The main tasks are as follows:1,Take the space girder element to establish a reasonable finite element static analysis calculation model, calculate and analysis the bridge construction process deflection and stress in the continuous rigid-frame bridge simulation process, based on the forward calculation analysis. To guide the construction correctly, and ensure bridge deformations and forces meet the design requirements.2,Combined with the static analysis calculation model, analysis the sensitivity of designing parameters of Tian'e County Bridge ,by changing the main parameters to study the parameter error effection to deflection and stress of the prestressed concrete continuous rigid-frame bridge, recognize main parameters of construction control, and summarizes the law, make sure the result can be used for designing and construction of the same project.