Construction method of bare concrete prefabricated box beam with complicated structure

A fair-faced concrete and box girder construction technology, applied in truss-type structures, joists, girders, etc., to save resources, change traditional concepts, and simplify construction steps

Inactive Publication Date: 2015-02-25
CHENGLONG CONSTR GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to address the many deficiencies of the prior art, to provide a construction method for prefabricated box girders of complex structure fair-faced concrete, on the basis of ensuring the structural performance of concrete buildings, reduce the size deviation of concrete s

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  • Construction method of bare concrete prefabricated box beam with complicated structure
  • Construction method of bare concrete prefabricated box beam with complicated structure
  • Construction method of bare concrete prefabricated box beam with complicated structure

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Embodiment Construction

[0051] The present invention is a construction method of complex structure clear-faced concrete prefabricated box girder. By organizing and managing the concrete building structure, on the basis of ensuring the structural performance, the size deviation and appearance quality defects of the concrete structure are reduced as far as possible, and the effect of smooth concrete surface is achieved.

[0052] The inventive method needs to prepare following material:

[0053] 1. Ordinary Portland cement, coarse aggregate, gravel with mud content ≤ 1.0%, fine aggregate, admixture and defoamer.

[0054] 2. Machinery and equipment: Concrete delivery pumps, pump pipes, air compressors, flat vibrators, vibrators, concrete transport vehicles, bucket trucks, hoppers, steel rulers, levels, total stations, theodolites.

[0055] 3, technical parameter of the present invention (as shown in table 1):

[0056] project

Allowable deviation (mm)

Box girder width

±4

Box...

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Abstract

The invention discloses a construction method of a bare concrete prefabricated box beam with a complicated structure. The construction method comprises the following steps: (1) preparing for construction; (2) processing a foundation; (3) measuring and paying off; (4) mounting a bracket; (5) paving a bottom die; (6) prepressing the bracket; (7) binding a steel bar framework; (8) constructing by a corrugated pipe; (9) mounting a side die board; (10) supporting an outer side die board; (11) mounting a core die; (12) pouring bare concrete; (13) carrying out concrete maintenance; (14) mounting a support; (15) treating the surface of a beam plate; and (16) removing the die. According to the method disclosed by the invention, construction steps are simplified and the construction period is shortened; the construction of the bare concrete prefabricated box beam with the complicated structure is realized, and materials are saved and labor hours are shortened; and the construction quality is improved, and the economic benefits and the social benefits are obvious.

Description

technical field [0001] The invention relates to a construction method of a complex structure fair-faced concrete prefabricated box girder. Background technique [0002] With the advancement of technology, the traditional concrete box girder construction has been applied to long-span bridge engineering, subway station engineering, single-storey and multi-storey industrial plant columns, high-rise and super high-rise building projects, etc., but in the actual application process appeared some problems: [0003] (1) The pouring of concrete in the concrete column tube is a concealed project, and the pouring quality of the concrete cannot be visually inspected. When manual pouring and vibration are used, the construction quality can only be guaranteed by the operator's sense of responsibility and strict construction organization management. Checking is cumbersome, time-consuming and labor-intensive. [0004] (2) The manufacture and installation of the box girder is difficult an...

Claims

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Application Information

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IPC IPC(8): E04C3/20E01D2/04
Inventor 史广喜吴国华施凤英楼晓礼毛志伟
Owner CHENGLONG CONSTR GROUP
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