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Cast-in-place winter construction method for hanging basket cantilever

A construction method and cantilever technology, which is applied in the field of hanging basket cantilever cast-in-place winter construction, can solve problems such as high investment, difficulty in concrete transportation and pouring, and high construction risk, and achieve simple construction, easy construction quality assurance, and simple method steps Effect

Active Publication Date: 2017-04-26
CCTEB INFRASTRUCTURE CONSTR CO LTD
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  • Claims
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Problems solved by technology

Because the box girder for hanging construction in winter is a space structure located at a high altitude and constantly moving, the transportation and pouring of concrete are more difficult, the construction risk is greater, and the investment is higher

Method used

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  • Cast-in-place winter construction method for hanging basket cantilever

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] see figure 1 , in the embodiment of the present invention, a kind of hanging basket cantilever cast-in-place winter construction method, its specific steps are as follows:

[0031] (1) The outer surface of the hanging basket formwork flange plate, side formwork and bottom formwork is pasted with B1 grade flame retardant extruded board: the flame retardant extruded board is embedded between the vertical and horizontal ribs of the formwork;

[0032] (2) ...

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Abstract

The invention discloses a cast-in-place winter construction method for a hanging basket cantilever. The cast-in-place winter construction for the hanging basket cantilever comprises the following specific steps of (1) bonding a flame-retardant extruded sheet on the external surface of a hanging basket template; (2) laying a hot water circulating pipeline on the external side of the flame-retardant extruded sheet; (3) fixing the extruded sheet and the hot water circulating pipeline through spot-welding a reinforcing steel bar on a template vertical and horizontal rib; (4) integrally coating a suspension casting by using a canvas; (5) heating a girder template and the reinforcing steel bar by using an electric heating jackhammer; (6) placing a temperature measuring point; (7) casting segment concrete; (8) covering a cast-in-place beam segment concrete by using a film and a quilt; (9) plugging two cantilever ends of a box girder T-type structure by using fire prevention rock wool boards; (10) heating in a box room by using a coal stove and conveying steam into the box room by using an electric steam generator; and (11) tensioning press mortar. The cast-in-place winter construction method for the hanging basket cantilever has the advantages of simple steps, simple and convenient construction, easily ensured construction quality, good use effect and high practical value.

Description

technical field [0001] The invention relates to the technical field of bridge cast-in-place box girder construction, in particular to a winter construction method for hanging basket cantilever cast-in-place. Background technique [0002] According to the regulations, when the outdoor average day and night temperature is stable below 5°C for 5 consecutive days, the winter construction will begin. Because the box girder of the hanging basket construction in winter is a space structure that is constantly moving at high altitude, the transportation and pouring of concrete are more difficult, the construction risk is greater, and the investment is higher. Therefore, it is necessary to design a method with simple steps, simple construction, good economy, high safety, and easy to ensure construction quality to ensure the cantilever cast-in-place construction of the box girder hanging basket in winter. Contents of the invention [0003] The object of the present invention is to p...

Claims

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Application Information

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IPC IPC(8): E01D21/00E01D21/10
CPCE01D21/00E01D21/10
Inventor 戴小松冯浩何家刚陈琳王军舰
Owner CCTEB INFRASTRUCTURE CONSTR CO LTD
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