Steel-concrete partially-prefabricated composite beam structure using layered perforated plate connecting piece and manufacturing process thereof

Abstract

The invention relates to a steel-concrete partially-prefabricated composite beam structure using layered perforated plate connecting pieces. The steel-concrete partially-prefabricated composite beam structure using the layered perforated plate connecting pieces comprises steel main beams, transverse connecting steel plates, perforated plate connecting pieces, prefabricated portion slabs and cast-in-situ portion slabs, wherein the perforated plate connecting pieces are arranged on upper flanges of the steel main beams, an upper row of openings and a lower row of openings are formed in the perforated plate connecting pieces, the transverse connecting steel plates are connected between webs of adjacent steel main beams, the prefabricated portion slabs are located on the upper flanges of the steel main beams, the perforated plate connecting pieces are exposed out of the prefabricated portion slabs, the lower row of openings are located in the prefabricated portion slab, the upper row of openings are located above the prefabricated portion slabs, the cast-in-situ portion slabs are located on the prefabricated portion slabs, and the upper row of openings are located in the cast-in-situ portion slabs. The invention further provides a manufacturing process of a steel-concrete partially-prefabricated composite beam structure using layered perforated plate connecting pieces. The steel-concrete partially-prefabricated composite beam structure using the layered perforated plate connecting pieces and the manufacturing process have the advantages that the replacement time of a bridge superstructure can be greatly reduced, the construction period is shortened and the urban traffic pressure is greatly relieved; and the mass of the bridge superstructure is reduced.

Description

technical field [0001] The invention relates to a simple-supported composite beam structure for small-span bridges, in particular to a combined steel-concrete composite beam that is jointly stressed by a layered hole plate and a bridge deck, and in particular to a composite beam structure using layered holes Steel-concrete partial prefabricated composite beam structure with slab connectors and its manufacturing process. Background technique [0002] For a long time, my country has abundant labor resources and sand and gravel resources, and the small and medium-span concrete structure bridges are economical and have played a huge role in bridge construction. Among them, the number of small and medium bridges accounts for more than 90% of the total number of bridges. The construction of small and medium-span bridges is the basic breakthrough point for the sustainable development of highway bridge construction and the construction of resource-saving highway traffic. According...

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Problems solved by technology

[0003] In order to overcome the problems existing in the replacement of the superstructure of existing concrete bridges with small and medium spans, the present invention provides a steel-concrete partially prefabricated composite beam structure using layered perforated plate connectors and its manufacturing process Most of the technology and structure are prefabricated in the factory when the original bridge is demolished or in between, which can greatly reduce the replacement time of the bridge superstructure, shorten the construction period, and greatly reduce the urban traffic pressure; reduce the quality of the bridge superstructure, so that the original pier can meet the requirements of the new bridge. Specification requirements; concrete bridge deck can effectively alleviate the fatigue problem of pure steel bridges, without the need for large-scale anti-corrosion work

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