Combined cast-in-place box girder support system and construction method

A bracket system and combined technology, applied in the direction of bridges, bridge materials, bridge construction, etc., can solve the problems of difficult construction of steel pipe column foundations, heavy work at high altitudes, and increased construction costs, so as to save foundation treatment costs and reduce high altitudes. The effect of large workload and high mechanical cost

Pending Publication Date: 2020-09-15
ROAD & BRIDGE INT +1
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  • Abstract
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  • Claims
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Problems solved by technology

The full hall support has high safety, but it is only suitable for areas where there is no traffic requirement below, the pier height is within 15m, the foundation condition is good, and the terrain is relatively flat; the steel pipe support can be applied as long as the clearance under the bridge can meet the erection requirements, but it can be used in steep terrai

Method used

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  • Combined cast-in-place box girder support system and construction method
  • Combined cast-in-place box girder support system and construction method
  • Combined cast-in-place box girder support system and construction method

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Embodiment Construction

[0023] Such as figure 1 , figure 2 , image 3 As shown, a combined cast-in-place box girder support system provided by the present invention is equipped with an upper hoop 3 and a lower hoop 4 on each mid-span pier 1 of the bridge, and each hoop includes two semicircular There are connecting plates on both sides of the hoop plate, and the two hoop plates are buckled on the pier body. The connecting plates of the two hoop plates are connected by high-strength bolts. The connecting plates of the hoop plates are combined into a hoop corbel; a support rod 5 is provided between the corbels of the upper hoop 2 and the lower hoop 3, and the upper and lower ends of the support rod 5 are connected with the bottom of the upper hoop corbel and the lower hoop respectively. The top of the corbel of the hoop is tight; each side pier 2 of the bridge is respectively provided with a steel pipe column 6, the bottom of the steel pipe column 6 is supported on the ground concrete foundation 7, ...

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Abstract

The invention provides a combined cast-in-place box girder support system and a construction method. An upper hoop and a lower hoop are mounted on each middle pier of a bridge; a supporting rod is arranged between brackets of the upper hoop and the lower hoop; a steel pipe stand column is arranged close to each side pier of the bridge; the bottoms of the steel pipe stand columns are supported on aground concrete foundation; bearing cross beams are erected on the hoops and the tops of the steel pipe stand columns in a water flow direction; and bailey longitudinal beams are erected at the topsof the two bearing cross beams of each span in a bridge axis direction, distribution beams are erected on the bailey longitudinal beams in the water flow direction, full framing is installed on the distribution beams, and a cast-in-place box beam formwork system is installed at the top of the full framing. The method is suitable for geological conditions such as complex mountainous terrain conditions, high foundation treatment difficulty and high pier studs, and is simple in structure, low in material investment and high in safety.

Description

technical field [0001] The invention belongs to the technical field of cast-in-place box girder construction in bridge engineering, and specifically relates to a combined cast-in-place box girder support system and a construction method, which is especially suitable for on-site cast-in-place box girders with complex terrain conditions, difficult foundation treatment, and high pier columns in mountainous areas. Pouring box girder construction. Background technique [0002] At present, the commonly used construction supports of cast-in-place box girder mainly include full-wall supports and steel pipe supports. Full hall support has high safety, but it is only suitable for areas where there is no traffic requirement below, the pier height is within 15m, the foundation conditions are good, and the terrain is relatively flat; 1. Under weak geological conditions, the construction of the steel pipe column foundation is more difficult, which increases the construction cost. In addi...

Claims

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Application Information

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IPC IPC(8): E01D21/00E01D2/04E01D101/24
CPCE01D2/04E01D21/00E01D2101/24
Inventor 章从旭董俭召刘永松刘波
Owner ROAD & BRIDGE INT
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