A strengthening method of corrugated steel plate-concrete composite arch bridge covered with soil

Abstract

The invention discloses a reinforcement method of an earthed corrugated steel plate-concrete combined arch bridge. According to the method, an earthed corrugated steel plate-concrete combined arch ring has greatly enhanced strength and rigidity; concretes at the top of an upper steel plate can be used for improving the durability, shock resistance and flame resistance of the arch ring; a reinforced concrete ring beam can be used for protecting a road foundation protective slop and improving the whole transverse stiffness of a composite structure; a reinforced concrete unloading plate can be used for enlarging the stress region of the structure and reducing stress and deformation of the arch ring due to automobile mobile load; a galvanized corrugated steel tube can be used for alleviating the dead load of the combined arch ring, reducing the stress and deformation of the combined arch ring and improving the span and aesthetic feeling of the structure. The reinforcement method has the characteristics of low construction cost, high construction speed, good durability, low maintenance cost, environmental friendliness, and the like, and has favorable application prospect in middle-span or small-span bridges and culverts.

Description

technical field [0001] The invention belongs to the field of reinforcement of soil-covered corrugated steel plate bridges, and in particular relates to a strengthening method suitable for soil-covered corrugated steel plate-concrete composite arch bridges. Background technique [0002] Medium and small bridges and culverts play an important role in highway and railway engineering. And now, the vast majority of medium and small bridges and culverts are reinforced concrete and masonry structures. Masonry and reinforced concrete structures have a long design and construction period, and are prone to cracking, spalling, water seepage, steel corrosion and other diseases during the operation stage, which seriously affect the safety, applicability and durability of medium and small bridge and culvert structures. At the same time, in the later maintenance and reinforcement, it will even cost more funds and manpower than building new bridges and culverts. Compared with masonry and ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to address the shortcomings of existing small and medium-sized bridges and culverts such as poor durability, long construction period, high cost, and existing soil-covered corrugated steel plate bridges and culverts with small spans, weak buckling resistance, weak seismic performance, and insufficient vault filling height. Provides a strengthening method for a soil-covered corrugated steel plate-concrete composite arch bridge, which overcomes the defects of the above-mentioned small and medium-sized bridges and culverts and general soil-covered corrugated steel plate bridges by strengthening the structure and reducing the load

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