The Alignment Control of Large-Span Continuous Beam Bridge Cantilever Construction Method

Xiao Tao Peng; Yi Xiong; Yong Wu; Dan Meng

doi:10.4028/www.scientific.net/AMM.351-352.1226

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The Alignment Control of Large-Span Continuous Beam Bridge Cantilever Construction Method
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 351-352The Alignment Control of Large-Span Continuous...

The Alignment Control of Large-Span Continuous Beam Bridge Cantilever Construction Method

Abstract:

One long-span bridge adopted the cantilever casting method, which is pre-stressed concrete variable cross-section continuous box girder structure. In the construction process, due to the concrete pouring, hanging basket moving, construction loads, pre-stressed tension, concrete shrinkage and creep, temperature, humidity and many other factors. There will be such problems of cantilever beam segment closed error and the bridge line-type do not coincide in design goals. In this paper, we use the bridge dedicated finite element program MIDAS / Civil procedural for modeling and structural analysis. Analyze the problems of deflection control and pre-camber adjustment of cantilever construction, in order to ensure that the bridge closure smoothly in accordance with the design standards.