A high-precision lamination method of steel-concrete composite beam prefabricated concrete bridge deck and steel beam

Abstract

The invention discloses a high-precision lamination method of a steel-concrete composite girder prefabricated concrete bridge deck and a steel girder, comprising the following steps: preparing a prefabricated concrete bridge deck; setting a lamination positioning reference; and laminating the prefabricated concrete bridge deck and steel girder; Before the precast concrete bridge deck embedded parts and steel girders are welded and before the wet joints of the factory are poured, the wet joints are connected by strong constraints; the butt welds between the precast concrete bridge deck and the steel beam diaphragm and the surrounding pre-embedded steel plates are welded The butt welds of the factory were poured, and the wet joint concrete was poured to complete the composite construction of the concrete bridge deck. The steel bar between the wet joints of the steel-concrete composite bridge adopts the high-precision lamination manufacturing technology of the precast concrete bridge deck and the steel beam of the mechanical connection joint, and controls the connection accuracy of the precast concrete bridge deck, the steel beam and the steel bar through the setting of the baseline positioning reference, Quickly and effectively realize the alignment accuracy of precast concrete bridge deck and steel girder.

Description

technical field [0001] The invention relates to the field of bridge manufacturing, in particular to a high-precision lamination method of a steel-concrete composite girder prefabricated concrete bridge deck and a steel girder in the bridge manufacturing field. Background technique [0002] The concrete bridge deck is an extremely important part of the composite beam. It not only bears the overall load of the whole bridge with the steel girder, but also directly bears the live load on the bridge deck. The concrete bridge deck is composed of prefabricated concrete bridge deck and traditional steel bars. It is made of lap joint welding. This method eliminates the problem of mechanical property degradation caused by the heating of steel bars, especially the problem of brittle fracture, which is conducive to improving the construction quality of wet joints, but it does not affect the prefabrication accuracy of the bridge deck and the superposition accuracy of the steel girder. Co...

AI Technical Summary

Problems solved by technology

[0002] The concrete bridge deck is an extremely important part of the composite beam. It not only bears the overall load of the whole bridge with the steel girder, but also directly bears the live load on the bridge deck. The concrete bridge deck is composed of prefabricated concrete bridge deck and traditional steel bars. It is made of lap joint welding. This method eliminates the problem of mechanical property degradation caused by the heating of steel bars, especially the problem of brittle fracture, which is conducive to improving the construction quality of wet joints, but it does not affect the prefabrication accuracy of the bridge deck and the superposition accuracy of the steel girder. Control has brought great difficulties. High-precision bridge deck prefabrication and high-precision superposition with steel beams are a major construction technical challenge for construction companies.

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