Connector with prefabricated steel pipe concrete beam segment and connecting method thereof

Abstract

The invention relates to a prefabricated steel pipe concrete beam field connecting method, the method is suitable for a large span bridge decking, can realize a steel pipe concrete structure prefabricated assembling construction mode, and belongs to the structure engineering technical field; the method comprises the following steps: one end of an outer steel pipe in the prefabricated steel pipe concrete is welded with a segment of cone lining steel pipe; pouring concrete in the steel pipe in a vertical state; two segments in the construction field are centered and spliced, and the outer steel pipe is connected through a butt joint welding slit; high-strength mortar or high-strength grouting material are poured into a grouting port until the mortar overflows from a stock outlet, then the grouting port and the stock outlet are welded and sealed; a proper gap between the inner and outer steel pipes is used for correcting structure axis misalignment; a mud jacking process can ensure tight contact of the filled concrete of the two segments; the method is simple in structure, less in steel bar consumption, convenient in construction, fast in filed mounting speed, small in moisture wet working amount, excellent in force bearing performance, reliable in force transmission, and can less affect surrounding environment.

Description

technical field [0001] The invention relates to a connector of a prefabricated steel pipe concrete beam segment and a connecting method thereof, belonging to the technical field of structural engineering. Background technique [0002] With the increasing scale of engineering construction, the development of structural prefabrication assembly technology makes prefabricated steel tube concrete suitable for industrial construction, reduces the amount of wet work on site, improves construction efficiency and economy, and can also promote the application of steel tube concrete as a longitudinal beam in the bridge field. The prefabricated concrete-filled steel tube joint is a key position, which bears large axial pressure and bending moment, and it is especially necessary to ensure that the concrete is in close contact with the axial direction. The common prefabricated assembly method directly splices the steel pipes and then pours the internal concrete, which cannot ensure the co...

AI Technical Summary

Problems solved by technology

The common prefabricated assembly method directly splices the steel pipes and then pours the internal concrete, which cannot ensure the compactness of the internal concrete. The force transmission in the splicing area is not direct, the integrity is poor, or the complex splicing area structure is used, which increases the difficulty of construction, prolongs the construction period, and poor economy.

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