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Bolting-welding mixed-connection segmented prefabricated assembly type composite beam and construction method thereof

A segmented prefabrication and assembly technology, which is applied in the direction of erecting/assembling bridges, bridges, bridge parts, etc., can solve the problems of small spans of bridges, improve bridge spans, avoid welding quality problems, and reduce pressure area Increased effect

Pending Publication Date: 2021-03-09
GUANGZHOU MUNICIPAL ENG DESIGN & RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the construction speed of this method is fast, due to the limited transportation and hoisting in the city, the bridge span length is relatively small

Method used

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  • Bolting-welding mixed-connection segmented prefabricated assembly type composite beam and construction method thereof
  • Bolting-welding mixed-connection segmented prefabricated assembly type composite beam and construction method thereof
  • Bolting-welding mixed-connection segmented prefabricated assembly type composite beam and construction method thereof

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Embodiment Construction

[0032] refer to Figure 1 to Figure 5 , the present invention is a segmented prefabricated composite beam with bolted and welded joints, including several prefabricated main beam sections, longitudinal connecting sections and transverse connecting sections, and adjacent prefabricated main beam sections are connected by longitudinal connecting sections to form a target span The main girder structure, adjacent main girder structures are connected by transverse connecting sections to form a bridge span structure.

[0033] Specifically, the prefabricated main girder segment includes a steel beam 10, a concrete slab 20, and several shear connectors 30, the steel beam 10 includes a top plate 11, a bottom slab 13, and a web 12 connected between the top slab 11 and the bottom slab 13, and the concrete slab 20 is located above the top plate 11, one end of several shear connectors 30 is poured and fixed in the concrete slab 20, and the other end is welded and fixed on the top plate 11. ...

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Abstract

The invention discloses a bolting-welding mixed-connection segmented prefabricated assembly type composite beam and a construction method thereof. The composite beam comprises prefabricated main beamsegments, the adjacent prefabricated main beam segments are connected through longitudinal connecting segments to form main beam structures, and the adjacent main beam structures are connected throughtransverse connecting segments to form a bridge span structure; each prefabricated main beam segment comprises a steel beam, a concrete slab and a shear connector, and each steel beam comprises a topplate, a bottom plate and a web; and adjacent top plates are welded in a butt joint mode, adjacent bottom plates and webs are connected in a fastened mode through bolts after being welded in a butt joint mode, longitudinal connecting steel components are arranged on the top plates, and adjacent longitudinal connecting steel components are welded in a butt joint mode. The longitudinal connecting steel components are provided with round holes, first reinforcing steel bars penetrate into the round holes, second reinforcing steel bars extend out of the periphery of the concrete slabs, and longitudinal connecting segment wet joints are cast in situ between the first reinforcing steel bars and the second reinforcing steel bars; and transverse connecting segment wet joints are cast in place between the adjacent concrete slabs; the segmental prefabricated reinforced concrete composite beam is convenient to transport and hoist; and bolt welding mixed connection is adopted, overhead welding ofthe bottom plate is avoided, and construction is convenient.

Description

technical field [0001] The invention relates to the technical field of bridges, in particular to a segmented prefabricated composite beam connected by bolting and welding and a construction method thereof. Background technique [0002] With the acceleration of urbanization, the construction of transportation and municipal infrastructure in various provinces and cities in my country has gradually reached a climax, and a large number of projects with large quantities and long construction periods have emerged. [0003] For municipal bridge projects, because most of them cross urban areas, traditional cast-in-place construction can easily lead to a sudden drop in traffic capacity in the construction area, affecting the smooth flow and safety of road traffic, and even frequent traffic interruptions, which greatly affect the work and life of residents. In addition, the traditional cast-in-place site has a large workload, low construction efficiency, high overall energy consumptio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/00E01D19/06E01D21/00E01D101/26E01D101/30
CPCE01D19/00E01D19/06E01D21/00E01D2101/26E01D2101/30
Inventor 宁平华乐小刚王晟熊洪波何则干胡会勇刘兵周昱罗永乐
Owner GUANGZHOU MUNICIPAL ENG DESIGN & RES INST CO LTD
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