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Construction method for integral lifting of large steel formwork for reinforced concrete chimney

A reinforced concrete and overall lifting technology, applied in the field of chimneys, can solve the problems of long construction period and complicated lifting facilities, and achieve the effect of simplifying the lifting system

Active Publication Date: 2019-06-14
CHINA MCC20 GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This construction process requires more complicated lifting facilities, and the operation platform needs to be extended out of the tube wall to be lifted. During the construction of the concrete tube wall, it is also necessary to hang internal and external construction hangers, and multiple sets of formwork are required for the inverted formwork construction. The lining needs to be constructed separately and successively, and the construction period is long and a series of disadvantages

Method used

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Embodiment Construction

[0021] A construction method for overall lifting of a large steel formwork for a reinforced concrete chimney, comprising:

[0022] 1. According to the alignment and positioning of the cylinder structure, set up a full scaffolding on the bottom plate of the chimney foundation.

[0023] 2. The position of the construction layer in the full hall frame is covered with wooden springboards as a simple operation platform. The operation platform is divided into two layers. Security protection reinforcement layer. A square hole of 0.9m x 0.9m is reserved in the middle of the operation platform as the loading and unloading channel for the hanging basket or bucket.

[0024] 3. Install vertical transportation facilities: The vertical lifting equipment in the chimney adopts a 3t hoist, equipped with a 16mm diameter steel wire rope, and the material is loaded and unloaded through the inner bucket or hanging basket. Steel bars are transported vertically by pull rods on the derrick.

[002...

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Abstract

The invention relates to a chimney construction method, and specially relates to a reinforced concrete chimney big steel mould integral lifting construction method comprising the following steps: 1, aligning and locating according to a cylindrical structure, erecting an all-round scaffold on a chimney base plate, and reserving a square hole in middle of an operation platform to serve as a basket or bucket up-down channel; 2, installing a vertical transport facility; 3, installing a cold rolling big steel template; 4, installing a wire rope fastener at the end of a wire rope after the cold rolling big steel template is installed, wherein one end of the wire rope on the fastener is a fixed end, and the other end is a movable end; 5, integrally dismounting and lifting the cold rolling big steel template; 6, binding cylinder wall steel bars and embedded parts according to a conventional construction process, laying firebricks, mounting a thermal insulation layer, and pouring concrete layer by layer until the construction is finished. The reinforced concrete chimney big steel mould integral lifting construction method simplifies lifting equipment, reduces high altitude constructions, and can improve construction efficiency.

Description

technical field [0001] The invention relates to a chimney, in particular to a large steel mold construction method for a reinforced concrete chimney. Background technique [0002] Chimneys used in industrial construction include brick chimneys, reinforced concrete chimneys, and steel chimneys. Among them, reinforced concrete chimneys are mostly used for chimneys with a height of more than 50 meters. They have the advantages of good wind resistance and earthquake resistance, simple construction, and small maintenance, so they are widely used in industrial construction. [0003] At present, the traditional construction methods of reinforced concrete chimneys mainly include the construction method of solid derrick displacement formwork and the night pressure sliding form construction method without derrick. This construction process requires more complicated lifting facilities, and the operation platform needs to be extended out of the tube wall to be lifted. During the constr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04G21/00E04G13/00
Inventor 林锡森王争凌香宝袁鹏辉王欣张志坤
Owner CHINA MCC20 GRP CORP
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