Abstract
Taking the construction of a prestressed concrete continuous beam bridge of an expressway in Shandong province as the background, the construction process and the geometric deformation of the main beam are analyzed based on the finite element software Midas/Civil. The monitoring and research results show that during the cantilever construction stage, the overall structure of the cantilever is compressive stress, with no tensile stress. The compression stress of block 0 increases gradually; the main beam occurs during the whole bridge closure stage, producing the maximum compression stress near the bridge span. The internal force state and linear state of the bridge formation stage meet the design and specification requirements, and the effect of construction monitoring meets the requirements of the target.
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