Box girder formwork construction method for municipal road and bridge buildings

Abstract

The invention discloses a box girder formwork construction method for municipal road and bridge buildings. The method comprises the steps that S1, a circulating air pump is started; S2, a refrigeration semiconductor is started; S3, the air suction pipe sucks air in the negative pressure cavity, and the air conveying pipe provides cold air for the interior of the negative pressure cavity; S4, the cold air cools an inner mold of the box girder, transmitted cold energy cools concrete, negative pressure is generated in a negative pressure cavity, a shaking spring shakes under the action of negative air suction force, the shaking spring which shakes stirs the concrete, bubbles rapidly swim and get close to a negative suction small hole and a shaking opening while the cold energy is transmitted,and then the bubbles are sucked away; and S5, the concrete generates pressure on the box girder side formworks on the two sides, the pressure is evenly transmitted to a first arc-shaped rod and a second arc-shaped rod through the different-angle force transmission rods, and the first arc-shaped rod and the second arc-shaped rod interact, extrude and react on the different-angle force transmissionrods to support the box girder side formworks. The method is suitable for municipal road and bridge building construction.

Description

technical field [0001] The invention relates to the technical field of box girder formwork construction, in particular to a method for constructing a box girder formwork for municipal road and bridge construction. Background technique [0002] At present, in the construction process of municipal road and bridge buildings, a large number of formwork is often used, but due to frequent use, steel structure formwork is often used in bridge construction, and the supporting structure is only used when the box girder formwork is used, mainly due to the general construction period It is longer and requires a strong support structure for support, and after pouring concrete, especially in summer, solid heat conduction is fast, the weather is hotter, the water vapor inside the concrete evaporates faster, the gas expands faster, and it is easy to generate expansion pressure on the box girder structure. Most of the supporting structures are those that fit on the outer edge of the side fo...

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Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides a construction method of box girder formwork for municipal road and bridge construction, which solves the problem that the general box girder formwork is limited by the support structure, and its support structure cannot support the box girder formwork well. It is under great pressure, and it is easy to be damaged under the long-term concrete weight and internal pressure.

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