Novel prefabricated type steel-concrete composite beam bridge upper structure and manufacturing technology thereof

Abstract

The invention provides a novel prefabricated type steel-concrete composite beam bridge upper structure comprising main steel beams, transverse connecting steel beams, metal connecting pieces and prefabricated reinforced concrete bridge deck slabs. The main steel beams are arranged according the shape of a bridge. The webs of the adjacent main steel beams are connected through the transverse connecting steel beams. The upper flanges of the main steel beams are provided with the metal connecting pieces. The prefabricated reinforced concrete bridge deck slabs are laid on the upper flanges of the main steel beams and provided with preformed holes used for grouting of grouting materials after the bridge deck slabs are well installed. The metal connecting pieces are located in the preformed holes. The invention further provides a manufacturing technology of the novel prefabricated type steel-concrete composite beam bridge upper structure. By the adoption of the novel prefabricated type steel-concrete composite beam bridge upper structure and the manufacturing technology of the novel prefabricated type steel-concrete composite beam bridge upper structure, damaged medium and small span concrete beam bridges can be rapidly replaced, the structure safety is good, the construction period is short, the cost is low, and the durability is good.

Description

technical field [0001] The invention relates to an assembled composite beam structure by using steel beams, prefabricated reinforced concrete slabs, metal shear parts and on-site bonding materials, especially a novel prefabricated assembled steel-concrete composite beam bridge superstructure and its manufacturing process. Background technique [0002] Small and medium-span concrete structure bridges are economical and have played a huge role in bridge construction in our country. However, one out of every four small and medium-span bridges in my country is a bridge with varying degrees of disease. These diseased bridges need to be repaired or reconstructed. The cost of manpower, financial resources and time for bridge reconstruction is huge. After investigation, it is found that the substructure of these diseased bridges can often continue to bear the load, and only the superstructure of the diseased bridge needs to be replaced, which can greatly relieve the pressure of mode...

AI Technical Summary

Problems solved by technology

However, small-span pure steel bridges often have fatigue problems. Steel bridge decks are prone to fatigue cracks under the action of vehicle loads. Steel bridge decks are prone to corrosion under natural conditions and vehicle load stresses, which will greatly reduce steel Service life of bridge deck

Images