The Study And Practice Of Construction Monitor And Control For Large Span Railway Concrete Continuous Beam Bridge

In recent years, as construction of rapid development and traffic in engineering science and technology, the wide highway construction occupies application of long span continuous girder bridge in a very important position. It is bridge construction control links in the large span rigidity generally believed that connected-beam bridge construction process is very important. In order to ensure continuous girder bridge stress condition in the construction process according to the ideal state deformation, and bridges closed to be able smoothly, we must ensure smooth linear can do in the construction process of the bridge construction control work, while the cantilever construction process elevation and linear control becomes the important link of the construction control of one.This paper based on Xiangpu railway Jingshan bridge(40+64+40m), according to the characteristics of cantilever construction of continuous beam bridge, studied control linear construction process. Combined with the theory of construction control calculation method, using Midas/Civil software to do the simulation, control point to check the elevation of the bridge in different construction stages, finally realizes the precise folding bridge, as well as provide the basis for the construction process of the bridge related.