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Self-anchored template bracket system for connecting channel and construction method

A support system and a communication channel technology, which is applied to the self-anchored formwork support system and the construction field of the communication channel, can solve the problems of poor quality of the secondary lining, difficult operation, and safety risks, and achieve the effect of good traffic conditions and increased stability.

Inactive Publication Date: 2020-01-03
中建八局轨道交通建设有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art. In the construction process of the second lining of the existing subway communication channel, the communication channel is narrow and the top arc is small. The formwork support system installed with ordinary steel pipe scaffolding and wooden formwork is not easy to operate. , there are safety risks, and the quality of the poured secondary lining is poor. The design provides a communication channel self-anchored formwork support system and construction method. Pre-bent I14 I-beam is used as the main keel, and the formwork adopts combined small steel mold, and reserve self-anchor bars on the bottom plate, and fix the I-beam with bolts, and then use simple brackets for secondary reinforcement

Method used

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  • Self-anchored template bracket system for connecting channel and construction method
  • Self-anchored template bracket system for connecting channel and construction method
  • Self-anchored template bracket system for connecting channel and construction method

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Embodiment

[0024] The main structure of the communication channel self-anchored formwork support system described in this embodiment includes the first steel formwork 1, the second steel formwork 2, the ground anchor bolt 3, the first double steel pipe 4, the steel wedge 5, the bolt 6, the second Two pairs of steel pipes 7, upper I-beam 10, lower I-beam 11, steel pipe 12, bolt cap 13 and bolt buckle 14; upper I-beam 10 and two lower I-beams 11 form the main keel of the arched structure, The vertical distance between the adjacent upper I-beams 10 is 60cm. The upper I-beams 10 are pre-bent according to the arc size of the structural arch wall 9. The connection between the upper I-beam 10 and the two lower I-beams 11 is welded with a steel plate And fixedly connected by four bolts 6 with a diameter of 20mm; the first steel formwork 1 with a length × width of 120 × 20 cm is installed on the curved inner wall of the structural arch wall 9, and a length × width of 120 cm is installed on the inn...

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Abstract

The invention belongs to the technical field of metro construction and relates to a self-anchored template bracket system for a connecting channel and a construction method. A first steel template anda second steel template are spliced by small steel templates which can be repeatedly used, and meanwhile, the radian of a structural arch wall can be also guaranteed and the rigidity also can meet the demand fully. By taking pre-bended I-shaped steel as a main keel and reserving a self-anchoring bar to fix the I-shaped steel when a structural bottom plate is poured, so that the system is stressedwell, a relatively large operation space is released and second lining concrete is poured conveniently. The I-shaped steel is reinforced assisted by a simple bracket and is served as an operating platform of pouring the second lining concrete, the passing condition of operators is good, and meanwhile, the stability of the whole template bracket system is also improved.

Description

Technical field: [0001] The invention belongs to the technical field of subway construction, and relates to a communication channel self-anchored formwork support system and a construction method. In the formwork project applied to the second lining construction of the subway communication channel, the designed formwork support system can greatly release the work of the communication channel Space, safe and reliable, easy to operate. Background technique: [0002] The communication channel in the urban subway also has multiple functions such as ventilation and fire protection. Usually, after the construction of the main line tunnel is completed, the current subway communication channel is excavated by the underground excavation method. It is about 3m wide and 3m high, and has a large arc on the top. The conventional secondary lining uses wooden boards, square wood, and fastener steel pipes to form the formwork support system. The efficiency is low, and the quality of the er...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10E21D11/12
CPCE21D11/10E21D11/12
Inventor 任晓敏郝亚军车家伟相开将蒲万旭钱韩飞
Owner 中建八局轨道交通建设有限公司
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