Elevation Study Of Continuous Rigid Frame Bridge In Construction Control

Along with the augment of bridge span,construction control became more vitaland attention. The paper takes the Ban Shao Wei large Bridge as an object of the study and focuses on the ratio control of PC continuous rigid frame bridge in construction with the cast-in-place cantilever method. The research mainly includes such contents as below:Firstly, thoroughly investigating into present analysis methods of bridge structures, assembling analysis method and disassembling analysis method are theoretically analyzed and compared. By discussing the two calculation methods, a simply available method meeting the precision is established.Secondly, a bridge structure analysis software, MIDAS/Civil was used to erect the mode of the bridge. Through calculating and analysis, this paper gave out the displacement, internal force and stress results of the continuous rigid-frame bridge, and contrasted the analysis results and the measuring results. An explanatory about the article based on the theoretical analysis reflect the actual situation,It can be applied to construction control on large-span prestressing force concrete rigid frame for the bridge .Thirdly, construct line-type control of box beam for PC continuous rigid frame bridge in cantilever construction process is very important. Joining precision of the bridge is mostly dependent on vertical deformation control, which is crucial for guaranteeing geometric control within the range of the permission of design. By analyzing factors relative to construct line-type control, such as made the height of the template, adjust the height of the template, Segments of deflection.