Prestressed Concrete Continuous Beam Bridge Construction Control

With the development of the cantilever construction technology, prestressedconcrete continuous girder bridge has got unprecedented development. In the process ofcantilever construction, prestressed concrete continuous girder bridge was under theinfluence of all kinds of uncertain factors so that to lead to changes of internal force anddeformation of the structure. So in order to ensure the precision of bridge structure foldand bridge can reach the requirements of the design of the linear elevation, constructionmonitoring work is quite important.In this paper, in the engineering background of ZiGang Bridge, On the basis of theinvestigation about prestressed concrete continuous girder bridge construction control indomestic and international, and then analyze the purpose, significance, developmentsituation and trends of the construction control technology, the influence of internalforce and deformation of all kinds of factors was researched. The finite elementsoftware BSAS was used to establish beam element model, based on the constructioncontrol scheme to carry on simulation analysis of the whole bridge construction process.At the same time, according to the construction monitoring programme, elevation andstress should be measured and controlled actually of each construction section.Construction control results of ZiGang Bridge had provided the favorable data basis forconstruction control, and ensured the smooth construction of the bridge. Theconstruction of monitoring method adopted in this paper has certain reference value tothe similar bridge.