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CONSTRUCTION METHOD FOR CONTINUOUS BEAM HAVING ASYMMETRICAL CROSS SECTION STIFFENED BY LARGE-SPAN ARCH
CONSTRUCTION METHOD FOR CONTINUOUS BEAM HAVING ASYMMETRICAL CROSS SECTION STIFFENED BY LARGE-SPAN ARCH
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机译：大跨度拱肋非对称截面连续梁施工方法
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摘要
A construction method for a continuous beam having an asymmetrical cross section stiffened by a large-span arch, comprising the following steps: S1: designing a counterweight balance load by using a preset method to balance the bending moment of an arch-stiffened continuous beam; and S2: using a preset scheme to complete unbalanced counterweight construction on the large-span arch-stiffened continuous beam. The beneficial effects comprise: under large-span asymmetric cross section load and mobile protection construction conditions, a large unbalanced moment generated at one end is prevented by means of balancing counterweights in sections and moving the counterweights, so as to prevent a large deviation in main beam linearity from occurring during the construction process, ensure the smooth closing of an entire bridge, and achieve the expected linearity of the main beam formed into the bridge; and the tensile stress of a cross section roof caused by the counterweights may be effectively reduced, thereby preventing the generation of cracks.
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