Single-arch-rib framing swivel construction steel box arch bridge and construction method thereof

Abstract

The invention belongs to the technical field of arch bridge construction, and relates to a single-arch-rib framing swivel construction steel box arch bridge and a construction method thereof. The archbridge comprises a lower rotating disc located on a foundation, a horizontal rotating system fixedly installed on the lower rotating disc, an upper rotating disc installed on the horizontal rotatingsystem in a rotating mode, two sets of bridge deck longitudinal beams fixed to the upper rotating disc, and a vertical rotating hinge installed on the inner side of the upper rotating disc and used for fixing an arch rib to be constructed. The upper rotating disc, the lower rotating disc and arch ribs are arranged in a left-right framing manner, transverse supports and inter-rib cross beams are arranged between the left framing arch rib and the right framing arch rib, a suspender cross beam is fixedly mounted between the bridge deck longitudinal beams, suspenders are arranged at equal intervals along the longitudinal direction of each arch rib, the upper ends of the suspenders are anchored to the arch ribs, the lower ends of the suspenders are anchored to the suspender cross beams, a plurality of secondary cross beams are arranged between the suspender cross beams, and the suspenders, the suspender cross beams, the secondary cross beams and the bridge deck longitudinal beams are connected to form a lattice system in order to construct a bridge deck framework. The construction method guarantees the construction quality of the arch bridge, reduces safety risks and construction cost,and achieves convenient construction.

Description

technical field

[0001] The invention belongs to the technical field of arch bridge construction, and relates to a steel box arch bridge with single arch rib frame-framing construction and a construction method thereof. Background technique

[0002] With the application of steel structures on various bridges, the spanning capacity of the bridge is greatly improved, and the stability of the bridge load-bearing structure is increased. The steel box arch is favored by bridge designers for its super strong spanning capacity. However, the terrain in mountainous areas is complex and restricted by various factors such as terrain, climate, geology and hydrology, the construction of arch bridges faces many difficulties. The common construction methods of arch bridges include cable hoisting, cable-stayed buckle-hanging method and swivel construction method. Cable hoisting cable-stayed buckle-hanging construction technology is relatively mature and reliable, but for Quaternary soil laye...

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