The Alignment And Elevation Control Of Long Span Continuous Rigid Frame Bridge

In recent years, as construction of rapid development and traffic in engineering science and technology, the wide application of long span continuous rigid frame bridge in highway construction occupies a very important position. It is generally believed that bridge construction control links in the large span rigidity connected-beam bridge construction process is very important, in order to ensure continuous rigid-frame bridge stress condition in the construction process according to the ideal state deformation, Bridges, 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 firstly expounds the construction control of long span continuous rigid frame Bridges, then the cause and development of large span systematically introduces the bridge construction control method and process, the main bridge construction control factors, adjust error method, then rely on often home river super major bridge construction process for background analysis bridge some problems need to be solved in, of which mainly introduced in the process of cantilever cast-in-place constructing.research elevation and linear control in construction control need pay attention to in the details, through using already built and building long-span continuous rigid frame Bridges in some of the construction control of experience that the stress of long span continuous rigid frame appeared in the process of observation data, the study used to cantilever construction of large span prestressed concrete continuous rigid the feasibility of construction process.