Method for solidifying steel pipe column through external sleeveing of circular steel pipe concrete

A technology of steel pipe concrete and reinforced steel pipes, which is applied in construction, building maintenance, building construction, etc., can solve problems such as high installation and transportation costs, affecting life and production, and achieve project cost savings, high reinforcement reliability, and high social benefit effect

Inactive Publication Date: 2017-05-17
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is replaced as a whole, the installation and transportation costs are higher, especially in remote areas
In addition, power transmission or production needs to be stopped during construction, which will affect normal life and production

Method used

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  • Method for solidifying steel pipe column through external sleeveing of circular steel pipe concrete

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The self-stressing self-compacting concrete is composed of the following components in proportion by weight: cement: water: sand: stone = 1:0.33:0.85:0.97, and also includes 0.8% water reducing agent by weight.

Embodiment 2

[0039] The self-stressing self-compacting concrete is composed of the following components in proportion by weight: cement: water: sand: stone = 1:0.28:0.90:1.01, and also includes 1.2% water reducing agent by weight.

Embodiment 3

[0041] The self-stressing self-compacting concrete is composed of the following components in proportion by weight: cement: water: sand: stone = 1:0.23:1.08:1.09, and also includes 2.5% water reducing agent by weight.

[0042] Experimental measurements show that the fluidity of the self-stressing self-compacting concrete prepared in this patent is good, and the degree of expansion is in the range of 645-655mm. With the reduction of the water-cement ratio in the formulas of the above three groups of embodiments, the viscosity of the concrete slurry increases. Large, for the standard 150×150×150mm sample block, the cubic compressive strength increases, which are 45MPa, 54MPa, and 61MPa in turn.

[0043] The outer round steel pipe is formed by on-site butt-welding of two semicircular steel plates, and the thickness of the outer outer round steel pipe is 3-10mm.

[0044]GB50936-2014 stipulates that the wall thickness of hollow concrete filled steel tubes (that is, the structure in...

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Abstract

The invention provides a method for solidifying a steel pipe column through external sleeveing of circular steel pipe concrete. The method is characterized by comprising the following steps that (1), polishing and derusting are conducted on the surface of an original steel pipe column; (2), an externally-sleeved circular steel pipe is installed on the periphery of the original steel pipe column, and the original steel pipe column is wrapped with the externally-sleeved circular steel pipe; and (3), filling materials are poured between the original steel pipe column and the externally-sleeved circular steel pipe. According to the method for solidifying the steel pipe column through external sleeveing of the circular steel pipe concrete, a steel pipe concrete structure is applied to the solidifying process of the steel pipe column, and a method for local solidifying or overall solidifying of a damaged steel pipe column through externally-coated steel pipe concrete is provided; when local solidifying is conducted, the externally-sleeved steel pipe mainly has a hooping effect, and when overall solidifying is conducted, the externally-sleeved steel pipe can jointly bear the pressure and has the hooping effect, so that a new thought is provided for the solidifying method of the steel pipe column.

Description

technical field [0001] The invention relates to a method for reinforcing a building structure, in particular to a method for reinforcing a steel pipe column with a circular steel pipe concrete jacket. Background technique [0002] Concrete filled steel tubes can give full play to the advantages of steel tubes and core concrete, and can make up for the respective shortcomings of these two materials. It has the advantages of high bearing capacity, good ductility, good energy consumption, and good seismic performance. At present, it is widely used in multi-storey, high-rise and super high-rise buildings, long-span bridges, large-scale industrial plants and other structures. It is convenient for construction, shortens the construction period, and reduces cost and achieved good economic results. In the existing steel pipe concrete, concrete is poured in the steel pipe to form a solid composite structure, so as to increase the strength and rigidity of the steel pipe. Patent Publ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G23/02
CPCE04G23/0218
Inventor 李杉祝涛卢亦焱李娜李霆胡霁月
Owner WUHAN UNIV
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