Study And Practice On Construction Monitoring Technology Of Cantilever Construction For Hutuohe Grand Bridge

Hutuohe grand Bridge on the cantilever construction method is adopted. Each construction section to adjust template elevation, pouring concrete, the process of tensioning prestressed in construction process there are a lot of certain and uncertain factors, There was a problem in any one link, are bound to the structure of the security, stability, the structure of the bridge, the linear and stress caused great impact. So the linear control and stress in the process of cantilever is very improtant.Based on the construction of Hutuohe grand Bridge, the control technologies during the cantilever construction of the prestressed concrete continuous rigid frame bridge are studied. The finite element model of the bridge is established by the MIDAS and Dr.Bridges software to analyze the deformation and force of bridge during the construction of the various stages, and the calculated date is taken as the theoretical foundation of the bridge prosecution. The deviation appearing in construction is analyzed and identified, the problem is adjusted in timely and at the same time the structure of the followed stage can be correctly predicted. The ultimate goal is to make the finished bridge state meeting the design requirements.Finally, monitoring results of the project of Hutuohe grand Bridge are introduced in this article, the real deflection; displacement and stress of segments are accordance with comparing. Then, the Hutuohe Extra Large Bridge on the geographical location of the cold areas Bridge structure temperature field and temperature effects are monitor and tested. Look forward to provide some reference information with the cold area building of bridge and construction monitoring. Eventually monitoring results showed that the bridge closure smoothly, all comply with the design requirements.