A variable arc bridge landing support device

Abstract

The invention discloses a variable-arc bridge floor support device. The variable-arc bridge floor support device comprises pile foundations and a steel pipe column arranged on the pile foundations. Buttress distribution beams are arranged over the steel pipe column. A bailey beam is arranged on the buttress distribution beams. A full gradient-adjustment support is arranged on the bailey beam. The steel pipe column comprises two stand columns which are arranged in the bridge direction. Each stand column is composed of steel pipe sections which are connected mutually, and a diagonal strut is arranged between the two stand columns. A bearing platform is arranged between the pile foundations and the steel pipe column, and a flange plate is embedded in the bearing platform and used for fixing the steel pipe column. The steel pipe sections of each stand column are connected through connecting pieces, and the two stand columns are transversely connected through connecting pieces. The variable-arc bridge floor support device is of a double-steel-pipe form, variable-arch adjustment is conducted through the interval between the steel pipes, and the bridge floor height difference is adjusted through a full gradient-adjustment scaffold; and the variable-arc bridge floor support device is simple in structure, convenient to use, high in construction efficiency, capable of being used repeatedly, and low in cost.

Description

technical field [0001] The invention relates to a bridge support device, in particular to a floor support device for a variable arc bridge. Background technique [0002] The bridge is located on a terrain with large undulations. When the bridge deck is located on a circular curve or a gentle curve, the vertical and horizontal slopes of the bridge deck are relatively large. However, due to the limitation of the river flow, the full-wall support system cannot be used; moreover, the full-wall support system uses a large amount of steel. This requirement cannot be met; Cao Xinheng discloses a general-purpose cast-in-place bridge support (201110278421.7), which includes a movable base, a hydraulic jack, a steel pipe concrete column, a stabilizing tie rod in three vertical and horizontal planes, a spherical hinge support, the main beam of the support, Bracket secondary beams, reinforced slanting bars, distribution ribs, large steel molds at the bottom of beams, consolidation syste...

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Problems solved by technology

[0002] The bridge is located on a terrain with large undulations. When the bridge deck is located on a circular curve or a gentle curve, the vertical and horizontal slopes of the bridge deck are relatively large. However, due to the limitation of the river flow, the full-wall support system cannot be used; moreover, the full-wall support system uses a large amount of steel. This requirement cannot be met; Cao Xinheng discloses a general-purpose cast-in-place bridge support (201110278421.7), which includes a movable base, a hydraulic jack, a steel pipe concrete column, a stabilizing tie rod in three vertical and horizontal planes, a spherical hinge support, the main beam of the support, Bracket secondary beams, reinforced slanting bars, distribution ribs, large steel molds at the bottom of beams, consolidation systems between brackets and pier tops, partial formwork at pier tops, large-tonnage hydraulic jacks at pier tops, winches or hand chain hoists for falling frames in beams, steel cables for falling frames and other components; this kind of support cannot be applied to the situation where the vertical and horizontal slopes of the bridge deck are large, and the arc difference of the upper bridge deck cannot be adjusted.

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