Combined type bridge temporary support and construction method for rapidly building continuous beams by virtue of same

A temporary support and composite technology, which is applied in bridge construction, bridges, bridge parts, etc., can solve the problems of high use cost, sealing drop, and labor intensive, etc., and achieves strong compression resistance, convenient installation, and structural simple effect

Active Publication Date: 2015-12-09
BEIJING URBAN CONSTR ROAD & BRIDGE GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The process of temporary support for steel sand box is relatively complicated. In the case of standardized use, it needs to be customized in batches, which consumes a lot of labor and requires a large steel beam. In the case of small turnover, the cost of use is high
[0012] The sand release hole of the steel sand box is generally sealed with wooden wedges or screws. During the construction process, the seal will fall off, causing sand to leak out and causing quality ac

Method used

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  • Combined type bridge temporary support and construction method for rapidly building continuous beams by virtue of same
  • Combined type bridge temporary support and construction method for rapidly building continuous beams by virtue of same
  • Combined type bridge temporary support and construction method for rapidly building continuous beams by virtue of same

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Embodiment 1

[0044] according to Figure 1-2 As shown, the composite bridge temporary bearing in the present invention comprises a wooden sand box 1 with an open top, filled in the wooden sand box 1 and has fluidity dry sand 7, placed in the wooden sand box 1 and The concrete support column 2 whose top protrudes from the opening of the top of the wooden sand box 1 also includes a steel pipe 3 vertically embedded in the dry sand 7, and a sand discharge hole 4 is reserved at the bottom of the steel pipe 3, which can be used as a preferred The steel pipe is seamless steel pipe 3. The top of concrete support column 2 is placed with rubber pad 8, can be used as preferably the thickness of rubber pad 8 is 2mm, and the size side length of rubber pad 8 is longer than the side length 3-4cm of concrete block.

[0045] Wherein, the wooden sand box 1 is made of phenolic resin multilayer board.

[0046] It is preferable that: the outer wall of the wooden sand box 1 is surrounded by a reinforcement bo...

Embodiment 2

[0049] A certain bridge in this embodiment adopts the technical standard of a first-class highway, with a total length of 306m, four holes and one connection, a total of three connections, the upper part adopts a 25m prestressed small box girder, which is simply supported first and then continuous, using the temporary support of the bridge in the first embodiment The construction method for erecting continuous beams on the seat includes the following steps:

[0050] 1. Material preparation

[0051]Select the existing leftover materials at the construction site, square wood, bamboo wood formwork, 5-8mm wall thickness 14-20cm steel pipe 3, high-grade concrete support column 2, dry and uniform fine quartz sand, wooden sand box 1 reinforcement, 2mm rubber pad 8 (The size of the rubber pad is 3-4cm longer than the concrete block), etc.

[0052] 2. Design of temporary bearings for composite bridges

[0053] The design of temporary bearings for composite bridges is carried out acco...

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Abstract

The invention discloses a combined type bridge temporary support and a construction method for rapidly building continuous beams by virtue of the same. According to the combined type bridge temporary support, by virtue of adequate utilization of mechanical properties of materials of steel, wood and concrete, the problems of poor compressive stability and durability, convenience in mounting and dismounting, low in bridge positioning accuracy and the like of various existing bridge temporary supports are solved. A top-open wood sand box serves as a dry sand container, and the lateral pressure of the sand box is negligible under loading; steel pipes and sand serve as a loaded entirety, i.e., the extremely good compressive property and stability of sand under a lateral constrain condition are adequately utilized; a concrete cube has good compressive property as well; the bridge temporary support produced by combining the dry sand container, the loaded entirety and the concrete cube has the advantages of safety, economical efficiency, environmental friendliness and stability. The bridge temporary support is low in production cost, high in mounting and dismounting speeds, safe and stable and can be repeatedly and circularly used; by virtue of a rapid positioning method of a T-shaped beam plate, bridges can be accurately mounted in one time, and the actual application effect of the bridge temporary support is good.

Description

technical field [0001] The invention relates to the technical field of road and bridge construction, in particular to a bridge temporary support and a construction method for quickly erecting continuous beams using it. Background technique [0002] Simply supported first and then continuous bridge is the bridge form widely used in my country, that is, the beam body is prefabricated in the prefabrication field and erected on site, which can give full play to the mechanical properties, effectively improve labor efficiency, save a lot of formwork and supports, and thus speed up the construction progress. Reduced construction costs. The upper and lower parts of the simply supported and then continuous bridge structure can be constructed at the same time, and the progress is fast. The construction method of the simply supported beam is used for the upper structure, but the continuous beam with a better structure is obtained. In my country's highway construction, a large number of...

Claims

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Application Information

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IPC IPC(8): E01D19/04E01D21/00
Inventor 熊军辉张青魏永峰王志辉史建
Owner BEIJING URBAN CONSTR ROAD & BRIDGE GROUP
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