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One-time slip-form construction method for multi-layer platform chimney with square variable cross-section under high wind pressure

A multi-layer platform and construction method technology, applied in the direction of formwork/formwork/work frame, tower, building type, etc., can solve the problems of wasted construction period, resources, low construction efficiency, etc., to save construction period, construction science, increase the overall Effects of Sex and Stiffness

Active Publication Date: 2019-01-11
广西建工第一建筑工程集团有限公司
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Problems solved by technology

[0003] With the rapid economic development and the acceleration of the industrialization process, the height design of factory chimneys is getting higher and higher. Usually, multi-layer platform chimneys adopt the construction method of "one slide and one platform", which leads to low construction efficiency and wastes a lot of construction time and resources.

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  • One-time slip-form construction method for multi-layer platform chimney with square variable cross-section under high wind pressure
  • One-time slip-form construction method for multi-layer platform chimney with square variable cross-section under high wind pressure
  • One-time slip-form construction method for multi-layer platform chimney with square variable cross-section under high wind pressure

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Embodiment Construction

[0031] The technical solution of the present invention will be further described below with reference to the drawings and examples.

[0032] The one-time slip form construction method of a square variable section multi-layer platform chimney under high wind pressure according to the present invention is specifically implemented as follows:

[0033] 1. Construction preparation: According to the design data, consult the relevant specifications, use Abaqus finite element analysis software to carry out the displacement curve and stress change of the chimney body along the height change under the action of wind pressure. According to the analysis results, it is determined that the φ200×3.5 steel pipe is welded into an internal octagonal overall support form, and the stress-strain curve of the octagonal platform steel pipe support is analyzed. At the same time, 12 wind pressure sensors are evenly arranged around the outside of the sliding mold device, 3 on each side, to monitor the wind ...

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Abstract

Disclosed is a one-time slip-form construction method for a square variable-section multi-layer platform chimney under high air pressure. The method includes the steps of performing construction preparation, performing measurement and paying off, performing up-regulation of lead screws and primary slip construction, measuring the perpendicularity, checking a center line, taking deviation correction measures, pre-embedding steel plates, vertically suspending in-mold steel pipes at a formwork upper opening between steel bars and a formwork, pouring concrete, controlling the variable section, welding an octagonal overall platform support, performing platform structure construction and pouring platform structure concrete; after the concrete strength is detected to be qualified, platform steel pipe supports of the corresponding layers are dismantled; and a framed bent is set up on a first-layer platform, and structural construction of a second-layer platform is continued till the whole operation is finished. By means of the one-time slip-form construction method for the square variable-section multi-layer platform chimney under high air pressure, the construction efficiency can be improved, and the constriction period is shortened; by double check of a laser plummet and a big line hammer, the perpendicularity of the chimney can be accurately monitored; the steel plates are pre-embedded at the intersection nodes of platform beams and a barrel, so that steel bar anchoring at the beam end intersections is successfully achieved; and temporary platform supports are arranged, the integrity and rigidity of the barrel in the construction process are improved, and safe construction is guaranteed.

Description

Technical field [0001] The invention relates to the technical field of building construction, in particular to a one-time slip form construction method for a square variable section multi-layer platform chimney under high wind pressure, and is suitable for the slip form construction of reinforced concrete chimneys. Background technique [0002] Slipform construction is widely used in engineering construction due to its advantages of construction continuity, high degree of mechanization, fast speed, energy saving and environmental protection, and construction safety. [0003] With the rapid economic development and the acceleration of industrialization, the height design of factory chimneys is getting higher and higher. Usually, the multi-layer platform chimney adopts the construction method of "one slide and one platform", which has low construction efficiency and wastes a lot of construction time and resources. In order to realize the safe and rapid construction of the multi-layer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04H12/28E04H12/34E04G11/22
CPCE04G11/22E04H12/28E04H12/341
Inventor 唐光暹谢鸿卫孙富达禤战张征斌颜秋华岑宏郑毅邱国兴李日红宋英波李安俊莫永雄苗方辉胡波覃祥涛谢京伟李梅
Owner 广西建工第一建筑工程集团有限公司
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