Large-span double-layer Bailey truss structure and construction method thereof

Abstract

The invention discloses a large-span double-layer Bailey truss structure, which comprises bridge pile foundations, bridge piers, support system pile foundations, bearing platforms, double-layer Bailey trusses, full framings and box girders, wherein the bridge pile foundations and the support system pile foundations are constructed on both sides; the bridge piers are constructed on the bridge pile foundations; the two bearing platforms are constructed on the support system pile foundations on two sides; the double-layer Bailey trusses are hoisted and bridged between the two bearing platforms in a across manner; the full framings are erected between the double-layer Bailey trusses and the bridge piers and above the double-layer Bailey trusses; and the box girders are placed on the full framings. The invention further discloses a construction method for the large-span double-layer Bailey truss structure. Due to the adoption of the method, the cast-in-place box girders can be performed for bridge construction on old pavements and bridge decks, and the vehicle traffic requirements or old building protection under the constructed bridge is not influenced.

Description

technical field [0001] The invention relates to bridge construction technology, in particular to a large-span double-layer Bailey truss structure and a construction method thereof. Background technique [0002] With the rapid development of a large number of overpass bridges and overpass bridge projects in our country, the form of cast-in-place bridge supports for overpass bridges and overpass bridges mostly adopts the form of full-height brackets. However, due to the influence of the geographical natural environment and on-site construction environment, more and more The support form of the Bailey truss is adopted, and it is widely used in many projects of long-span flyover bridges where full support cannot be erected due to environmental influences. [0003] However, there is currently no solution for the situation that there is a bridge deck and pavement under the bridge under construction, and it is impossible to set up Bailey trusses and full roof supports on the bridge...

AI Technical Summary

Problems solved by technology

[0003] However, there is no solution for the situation that there is a bridge deck under the bridge under construction, and it is impossible to set up Bailey trusses and full roof supports on the bridge deck to ensure vehicle traffic requirements or protect old buildings.

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