Steel structure bridge with steel bridge main body isolated from bridge deck and construction method thereof

Abstract

The invention discloses a steel-structure bridge with a steel bridge body isolated from a bridge floor and a construction method of the steel-structure bridge. The steel-structure bridge with the steel bridge body isolated from the bridge floor comprises a steel cross beam, a plurality of simply-supported ballast bed bridge floor plates, water retaining protruding blocks, steel cover plates, chafing plates, support lower steel plates, transverse ballast plate stop blocks and anti-collision walls. The construction method of the steel-structure bridge with the steel bridge body isolated from the bridge floor comprises the steps that the standardized and modularized simply-supported ballast bed bridge floor plates obtained through factory prefabrication are adopted, the chafing plates are pre-buried into the simply-supported ballast bed bridge floor plates, cross limiting cards are adopted at intersection points of the simply-supported ballast bed bridge floor plates for limiting the sliding of the simply-supported ballast bed bridge floor plates on any plane, and meanwhile waterproof protecting layers are fabricated on the upper surfaces of the simply-supported ballast bed bridge floor plates. By means of the steel-structure bridge with the steel bridge body isolated from the bridge floor, the stress of a bridge floor system is simple and accurate; meanwhile, the maintenance and replacement are quite convenient, and the technical mode of the steel-structure bridge is different from an existing technical mode which relies on improving road surface materials.

Description

technical field [0001] The invention relates to the field of bridges with steel structure main girders or stiffened girders in traffic engineering, in particular to a steel structure bridge in which the main body of the steel bridge is isolated from the bridge deck and a construction method thereof. Background technique [0002] At present, the deck structures of large steel structure bridges mainly include orthotropic deck decks and steel-concrete deck decks. Participate in the overall stress of the whole bridge structure, or these bridge deck structures are part of the bridge load-bearing system, and their damage will affect the overall safety of the bridge structure, and the disease or potential disease status of the bridge pavement structure is a major safety hazard , and engineers are most worried about important "details". At present, foreign countries solve this problem by improving pavement materials and structures, and the technical route of protection has not been...

AI Technical Summary

Problems solved by technology

At present, foreign countries solve this problem by improving pavement materials and structures, and the technical route of protection has not been verified for a long enough time so far. Moreover, some orthotropic bridge decks are different to varying degrees. Damage occurs

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