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Concrete filled steel tubular column construction method

A technology of steel pipe concrete columns and construction methods, applied in the direction of columns, pier columns, pillars, etc., can solve problems such as difficulty in ensuring compactness and strength, and achieve the effect of improving compactness and strength

Inactive Publication Date: 2019-01-04
SHANGHAI BAOYE GRP CORP
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Problems solved by technology

[0004] Therefore, it is necessary to propose a construction method for concrete-filled steel pipe columns, which can solve the problem that the existing conventional concrete-filled steel pipe concrete is difficult to ensure the compactness and strength

Method used

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  • Concrete filled steel tubular column construction method
  • Concrete filled steel tubular column construction method
  • Concrete filled steel tubular column construction method

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Embodiment Construction

[0024] It includes the following steps:

[0025] Step 1. Prepare self-compacting concrete and install steel pipe columns;

[0026] When preparing self-compacting concrete, its components are proportioned according to parts by weight, and the slump of the concrete after the proportioning is completed ranges from 550mm to 655mm. The installation of the steel pipe column is carried out simultaneously with the preparation of self-compacting concrete. The specific installation method of the steel pipe column is not particularly limited in this embodiment, and the installation method can adopt the existing installation method.

[0027] Step 2: Pouring the prepared self-compacting concrete from the top of the steel pipe column, using a high-frequency vibrating rod with a length of at least nine meters for auxiliary vibration during pouring, and auxiliary vibration for every two-meter-thick concrete layer.

[0028] During the auxiliary vibration in this step, the high-frequency vib...

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Abstract

The invention relates to the technical field of structural engineering and construction, and in particular relates to a concrete filled steel tubular column construction method. The method comprises the following steps: 1, preparing self-compacting concrete and installing a steel pipe column; 2, casting the prepared self-compacting concrete from the top of the steel pipe column, performing auxiliary vibration during casting by adopting a high-frequency vibrating tube of at least 9m, and performing auxiliary vibration once while casting the concrete layer of 2m thick each time. According to themethod disclosed by the invention, the self-compacting concrete is adopted, due to relatively high liquidity, the steel pipe is filled with the concrete naturally, thereby achieving the compacting aim. Meanwhile, auxiliary vibration is performed by adopting the high-frequency vibrating tube. Since the steel pipe column is relatively long, high-dropping concrete casting can be realized; meanwhile,auxiliary vibration is performed by adopting the high-frequency vibrating tube, and a compact concrete structure can be formed, so that the compactness and strength of the steel tube concrete are improved, and various requirements of multi-partition plate steel tube high-strength concrete are met.

Description

technical field [0001] The invention relates to the field of structural engineering and construction technology, in particular to a construction method for a steel pipe concrete column. Background technique [0002] Steel tube concrete structure is the fifth largest structural system developed after steel structure, wood structure, reinforced concrete structure and masonry structure. It is a new composite structure formed by pouring concrete into steel tubes. CFST can be divided into circular CFST, square CFST and polygonal CFST according to the cross-sectional shape, among which circular CFST and square CFST are more commonly used. Compared with traditional reinforced concrete structures, CFST has many advantages. In terms of materials, steel and concrete are organically combined by concrete filled steel pipe, which can not only improve the stability of the steel pipe wall under compression with the help of inner filling concrete, but also improve the compressive strength ...

Claims

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Application Information

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IPC IPC(8): E04C3/34
CPCE04C3/34
Inventor 张永霞张宪苏邵聪
Owner SHANGHAI BAOYE GRP CORP
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