Steel-concrete combined beam prefabricated concrete bridge deck slab and steel beam high-precision overlapping method

Abstract

The invention discloses a steel-concrete combined beam prefabricated concrete bridge deck slab and steel beam high-precision overlapping method. The steel-concrete combined beam prefabricated concretebridge deck slab and steel beam high-precision overlapping method comprises the following steps that a prefabricated concrete bridge deck slab is prepared; an overlapping positioning basis is set; the prefabricated concrete bridge deck slab and a steel beam are overlapped; before a prefabricated concrete bridge deck slab embedded part and the steel beam are welded and factory wet joints are poured, powerful confinement connection is carried out on the wet joints; and butt weld of the prefabricated concrete bridge deck slab and a steel beam partition and butt weld of peripheral embedded steelplates are welded, the factory wet joint concrete is poured, and overlapping construction of the concrete bridge deck slab is completed. According to the prefabricated concrete bridge deck slab and steel beam high-precision overlapping manufacturing technology that the steel bars between the wet joints of the steel-concrete combined bridge adopts mechanical connection joints, by means of the setting of the base line positioning basis, the connecting precision of the prefabricated concrete bridge deck slab and the steel beam and the steel bars is controlled, and the alignment precision of the prefabricated concrete bridge deck slab and the steel beam is effectively achieved.

Description

Technical field [0001] The invention relates to the field of bridge manufacturing, in particular to a method for high-precision superposition of steel-concrete composite beam precast concrete bridge decks and steel beams in the field of bridge manufacturing. Background technique [0002] The concrete bridge deck is an important part of the laminated beam. It not only bears the overall load of the whole bridge together with the steel main girder, but also directly bears the live load on the bridge deck. The concrete bridge deck is made of precast concrete decks and traditional steel bars. Lap welded, this method eliminates the problem of deterioration of mechanical properties caused by heating of steel bars, especially the problem of brittle fracture, which is conducive to improving the construction quality of wet joints, but it improves the prefabrication accuracy of the bridge deck and the overlap accuracy of the steel beam Control has brought great difficulties. High-precision ...

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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