Construction Controlling Technology Of Multi-span Continuous Reinforced Concrete Cast-in-situ Slab Arch Bridge

Long span reinforced concrete slab arch bridge has the advantages of excellent force structure, crossing ability, vision, sleek, etc. It has been one of the most common arch structure. During the construction of a bridge with variety of factors,cast-in-situ concrete construction technology and full space support construction technology could lead the final status and quality to a wrong direction. For this reason,the bridge construction control is so necessary that it can guarantee the project is successfully completed with the expected state of overall force and linear.This dissertation takes the main bridge of New City Avenue across the Hutuo River in Shijiazhuang City as a case. It studies on construction controlling technology of multi-span continuous reinforced concrete cast-in-situ slab arch bridge.Firstly, the characteristics of arch bridge is analyzed. The development of the domestic and foreign arch bridge, the purpose and significance of the bridge construction control, the status and development of bridge construction control are analyzed too.Secondly, the theory and method of bridge construction control, the reason why there could cause errors are discussed.Thirdly, the overall project summary of the bridge and the theory of computation for continuous arch structure are expounded. The Midas Civil is used to build a calculation model. Then to calculate the bridge during construction, comes out with the change of force and linear.Finally, a construction control scheme is designed, the results and key processes are analyzed. The results show the bridge has a good agreement in terms of force and linear with the calculated value, the final bridge state meets the design requirements.