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Construction method of large silo dome concrete

A construction method and technology for large-scale cylinders, which are applied to scaffolding supported by housing structures, housing structural support, housing structural support, etc., can solve the problems of high investment in steel scaffolding, long construction period, and difficult construction, and achieve low platform dismantling difficulty. The effect of reducing construction costs and shortening the construction period

Pending Publication Date: 2021-03-26
CHINA NO 15 METALLURGICAL CONSTR GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of difficulty in construction of cast-in-place reinforced concrete dome of silo formwork, long construction period, large investment in steel pipe scaffolding, poor construction safety and high cost, and provide a construction method for large-scale silo dome concrete

Method used

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  • Construction method of large silo dome concrete
  • Construction method of large silo dome concrete
  • Construction method of large silo dome concrete

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Embodiment Construction

[0033] This embodiment takes the construction method of the silo dome concrete with a diameter of 22 meters as an example, which specifically includes the following steps:

[0034] 1) At the lower part of the top ring beam of the silo wall 1 (1.8m below the bottom of the installation hole at the support end of the dome beam reserved), the Φ32 carbon steel pull rings 2 are evenly embedded at a distance of 1.2mm, and the structure and embedding method of the pull ring 2 Such as figure 1 , the inner end of the pull ring 2 is welded and fixed to the steel bar 3 inside the warehouse wall 1;

[0035] 2) Pre-embed a pre-embedded steel plate 4 at 300mm and 1500mm below the middle position of each two pre-embedded pull rings 2, for welding the scaffold 5;

[0036] 3) Press image 3 Calculate the design length of the steel cable (plane length + suspension length after stress), and the specific size of each steel cable is shown in the table below:

[0037]

[0038] 4) The hanger in...

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Abstract

The invention relates to the field of building construction, in particular to a construction method of large silo dome concrete. The large silo dome concrete comprises the following steps: 1) when a silo wall is constructed to an elevation, pre-burying a plurality of pull rings at a certain distance from the lower part of a top beam of the silo wall, and mounting steel suspension cables on the pull rings, so that all the steel suspension cables are arranged into a steel cable net in a criss-cross manner; 2) prefabricating a central net rack and a fan-shaped net rack; 3) hoisting and fixing thecentral net rack and the fan-shaped net rack on the steel cable net; 4) erecting formwork supporting scaffolds on the net racks; 5) measuring downwarp amount of the steel cable net after performing pre-compaction for a period of time based on weight of cast-in-situ reinforced concrete at a silo dome, and adjusting stretching height of a supporting vertical rod based on the downwarp amount after dismantling; 6) erecting a dome formwork; (7) pouring dome concrete; and (8) disassembling a steel pipe supporting frame and the dome formwork. According to the construction method, the construction efficiency is greatly improved, the construction period is shortened, and the construction cost is lowered.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a construction method for large silo dome concrete. Background technique [0002] At present, there are two methods for the silo reinforced concrete dome formwork support system: one is to erect a full steel pipe scaffold from the warehouse floor to install the dome formwork. This method takes a long time to erect a full steel pipe scaffold and takes up a large amount of steel pipes, but the working conditions for dismantling the full steel pipe scaffold are poor. , It is very difficult to transfer the steel pipe out of the silo, and the construction cost is high. The second is to install the steel platform on the ring beam at the top of the silo, and then set up the dome formwork support frame and install the formwork on the steel platform, and the steel platform needs to be cut into small pieces and dismantled. This method has a high safety risk when removing the steel plat...

Claims

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Application Information

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IPC IPC(8): E04G3/24E04G3/20E04G3/22
CPCE04G3/246E04G3/20E04G3/22
Inventor 李汇贾方华杜喜喜
Owner CHINA NO 15 METALLURGICAL CONSTR GRP
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