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Construction method for tremie guiding pouring inside steel pipe column

A technology of conduit introduction and construction method, applied in the processing of building materials, construction, building structure, etc., can solve the problems of hidden safety hazards of high-rise buildings and poor concrete density at the bottom, so as to improve the pouring quality, increase the overall strength and save money. effect of funds

Inactive Publication Date: 2013-07-24
JIANGSU HUAJIANG CONSTR GROUP
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AI Technical Summary

Problems solved by technology

Since the steel pipe columns of high-rise buildings are formed by welding multiple steel pipes, in order to increase the strength of the steel pipe columns, multiple horizontal partitions are usually arranged in the steel pipe columns, and the concrete is poured downward from the top, so the above existing The common defects of each method are: the concrete after pouring, especially the poor compactness of the bottom concrete, which has a very high potential safety hazard for high-rise buildings

Method used

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Embodiment Construction

[0014] Case project: a research and development center in Xi'an, with two underground floors and twenty-four floors above ground (the height above ground is 93.25 meters), with a construction area of ​​40,338 square meters. The project is a frame structure, a total of 576 box-shaped steel columns are designed, the second underground floor is (two-section column), and the column height is 10.34 meters; the third floor and above (three-section column), the standard column height is 11.4 meters, all Concrete is poured inside the rectangular steel tube column.

[0015] The inner section size of the rectangular steel tube column is 650mm*650mm, 550mm*550mm, and the concrete poured into the rectangular steel tube column adopts C35, C40, C45, C50 concrete, and the total pouring amount is about 750m3. Each rectangular steel pipe column of this project is welded with 6 rectangular inner baffles through ribs. The size of the inner baffle is 650mm*650mm, the central through hole is Φ300m...

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Abstract

The invention provides a construction method for tremie guiding pouring inside a steel pipe column, and relates to the technical field of construction of pouring concrete inside the steep pipe column of high-rise buildings. After the steel pipe column is erected, cement is poured from bottom to top layer by layer. The construction method for tremie guiding pouring inside the steel pipe column is characterized in that a plurality of inner clapboards are respectively fixed inside the steel pipe column, a through hole used for allowing a tube to insert is formed in the center of each clapboard, in the process of pouring, the tube is inserted in the steel pipe column, the outlet end of the tube is located between two adjacent inner clapboards, vibration is conducted after pouring of the steel pipe column between the two adjacent inner clapboards is finished, and then the tube is lifted upwards, and pouring of a steel pipe column between a former set of two adjacent inner clapboards is conducted. The construction method for tremie guiding pouring inside the steel pipe column has the advantages of improving pouring quality of cement inside the steel pipe column, increasing whole intensity of a steel structure, and saving funds. The phenomena that the measures that the steel pipe column is scraped or the cement inside the steel pipe column is reinforced are adopted due to the fact that incompact quality of the cement inside the steel pipe column and insufficient intensity is eliminated.

Description

technical field [0001] The invention relates to the construction technology of high-rise buildings, in particular to the construction technology field of pouring concrete in steel pipe columns. Background technique [0002] The main methods of pouring concrete in steel pipe columns in construction projects include: pumping and jacking pouring method, high-level drop-free vibration method, segmented pouring method and manual manual layer-by-layer pouring method. Since the steel pipe columns of high-rise buildings are formed by welding multiple steel pipes to each other, in order to increase the strength of the steel pipe columns, there are usually multiple horizontal partitions in the steel pipe columns, and the concrete is poured downward from the uppermost end. Therefore, the above existing The common defect of the above methods is that the compactness of the poured concrete, especially the bottom concrete, is poor, which poses a very high safety hazard for high-rise buildi...

Claims

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Application Information

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IPC IPC(8): E04G21/06
Inventor 陈长正庞永祥王小培
Owner JIANGSU HUAJIANG CONSTR GROUP
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