Steel cover beam rotating body crossing existing railway and construction method thereof

Abstract

The invention relates to a steel cover beam rotating body crossing an existing railway and a construction method thereof. The rotating body comprises a well digging foundation and a rotating body pierfoundation which are positioned at the two sides, wherein an upper plate is arranged on the rotating body pier foundation, a spherical hinge is arranged between the rotating body pier foundation andthe upper plate, the upper plate is provided with a rotating body pier, the well digging foundation is provided with a fixed pier, and the two ends of the cover beam are arranged on the steel column on the fixed pier and the steel column on the rotating body pier through web node plates. The steel cover beam rotating body crossing the existing railway and the construction method thereof can avoidaffecting the normal operation of the existing line, and the construction problems that the steel cover beam is not suitable for hoisting due to large weight and construction due to large span; the steel cover beam rotating body can solve the construction difficulty of erecting the steel cover beam because temporary piers and slideways cannot be built due to the limitation of the existing railwaylines, and the steel cover beam structure is in a cantilever equilibrium state during rotating body process.

Description

technical field [0001] The invention relates to a steel cover beam swivel, in particular to a steel cover beam swivel spanning an existing railway, and a construction method thereof, which belongs to the field of bridge construction. Background technique [0002] When a new railway or highway line spans an existing railway line in the form of a bridge structure, if the angle of the oblique span is small, in order to prevent the pier from encroaching on the existing railway line, portal piers are generally used to support the superstructure of the bridge. At present, the construction methods of the steel cover beam of the portal pier include the direct hoisting method and the horizontal push method of the beam body. These two methods are respectively suitable for the case of the light steel cover beam and small span. If the self-weight of the steel cap beam is relatively large, the hoisting method cannot be constructed due to the limitation of the hoisting weight. The horizo...

AI Technical Summary

Problems solved by technology

If the self-weight of the steel cover girder is large, the hoisting method is limited by the hoisting weight and cannot be constructed

The horizontal push method needs to build temporary piers and slideways. If the span of the steel cover beam is large and limited by the existing lines, temporary piers cannot be built. Therefore, the horizontal push method is not suitable for the construction of large-span steel cover beams spanning railways.

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