Reinforced concrete superposed mixed girder bridge construction method

Abstract

The invention discloses a reinforced concrete superposed mixed girder bridge construction method. The method includes the following steps that S1, concrete beam sections are constructed on adjacent piers at the same time, opposite front cantilever sections and opposite rear cantilever sections of the beam sections are formed, start number zero blocks are poured in place through a support, and other number blocks of the concrete beam sections are poured in a suspended mode through a hanging basket; S2, steel beams of reinforced concrete combination sections are hung and connected to the front cantilever sections of the beam sections and the rear cantilever sections of the beam sections; S3, the multiple small-section steel beams are hung section by section to the surfaces of the constructedconcrete beam sections and assembled into a large-section steel beam; S4, a front guide beam and a rear guide beam are installed at the two ends of the large-section steel beam to form a combined steel beam; S5, the large-section steel beam of the combined steel beam is hung; and S6, a bridge floor is paved. The method has the beneficial effects that the method is suitable for the construction conditions with the poor water transport environment and large stormy waves, construction is safe, construction efficiency is high, and the method can be widely applied to the technical field of bridgeconstruction methods.

Description

technical field [0001] The invention relates to the technical field of bridge construction methods. More specifically, the present invention relates to a construction method of a steel-concrete laminated hybrid girder bridge. Background technique [0002] Steel-concrete composite-hybrid girder bridges are characterized by the use of both hybrid and composite beam systems. A certain length from the zero block to the mid-span is a concrete beam, a certain range from the mid-span is a composite beam, and the steel-concrete joint section is between the concrete beam and the composite beam. [0003] Commonly used construction methods mainly include cantilever pouring method, mobile formwork method, segmental prefabricated assembly method, jacking method, swivel method, etc. The mobile formwork method is suitable for the construction of whole-span concrete beams; the cantilever pouring method is suitable for the construction of concrete beams, but not for composite beams; the se...

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Problems solved by technology

The mobile formwork method is suitable for the construction of whole-span concrete beams; the cantilever pouring method is suitable for the construction of concrete beams, but not for composite beams; the segmental prefabricated assembly method is mainly used for the prefabricated installation of concrete beams or steel beams, and is suitable for bridge erection. machine or bridge deck crane for construction, but it has not been applied to hybrid composite girder bridge system

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