Rock stratum underground excavation three-story subway station umbrella cover structure and construction method thereof

A technology for subway stations and strata, which is applied in underground chambers, earth-moving drilling, wellbore lining, etc., to achieve the effects of reasonable structural design, safe and stable structure, and simple construction method.

Active Publication Date: 2017-01-18
CHINA RAILWAY LIUYUAN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Blasting construction methods are required in rock formations, too many blocks and a large number of temporary supports are very unfavorable under blasting conditions, and may even cause unacceptable major engineering accidents due to the failure of temporary supports

Method used

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  • Rock stratum underground excavation three-story subway station umbrella cover structure and construction method thereof
  • Rock stratum underground excavation three-story subway station umbrella cover structure and construction method thereof
  • Rock stratum underground excavation three-story subway station umbrella cover structure and construction method thereof

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Embodiment Construction

[0046] The present invention will be further described below in conjunction with accompanying drawing:

[0047] A three-story subway station canopy structure excavated in rocky strata, comprising a main arch structure and a reinforced concrete invert, the reinforced concrete invert is located below the main arch structure, and a structure is arranged between the main arch structure and the reinforced concrete invert There are side walls 22 on the second floor underground and side walls 20 on the third floor underground. The top of the side wall 20 on the third floor underground is connected to the bottom end of the side wall 22 on the second floor underground. Section 18, the second lining side section 18 of the arch is located on both sides of the middle section 15 of the second lining of the arch, the bottom of the second lining side section 18 of the arch is connected to the top of the side wall 22 of the second underground floor, and the reinforced concrete invert includes ...

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Abstract

The invention belongs to the technical field of design and construction of tunnel and underground engineering and especially relates to a rock stratum underground excavation three-story subway station umbrella cover structure and a construction method thereof. The structure comprises a main arc structure and a reinforced concrete inverted arch. an underground two-story side wall and an underground three-story side wall are installed between the main arc structure and the reinforced concrete inverted arch. The main arc structure comprises an arch portion second lining middle segment and arch portion second lining side segments; the arch portion second lining side segments are positioned at two sides of the arch portion second lining middle segment; the reinforced concrete inverted arch comprises an inverted arch second lining middle segment and inverted arch second lining side segments; the top of the inverted arch second lining middle segment is provided with two bottom girders; the bottom of the arch portion second lining middle segment is provided with two top girders; steel-pipe columns are installed between the top girders and the bottom girders. The structure and the method of the invention is suitable for supporting structure and construction of weak rock stratum dug three-story subway station and large sections of underground space; the structure has good stability and increased construction efficiency.

Description

technical field [0001] The invention belongs to the technical field of design and construction of tunnels and underground engineering, and in particular relates to a canopy structure and a construction method of a three-story underground excavation in rock formations. Background technique [0002] Since the beginning of the 21st century, my country's urban rail transit has entered a period of rapid development. As an important part of urban transportation, rail transit has gradually formed its operating network. In the process of line construction, more and more transfer stations and hubs are encountered, and the impact of the transfer mode and transfer efficiency of rail transit on the operation of the rail transit system is becoming more and more obvious. [0003] The construction of subway transfer stations, from transfers outside the station to transfers inside the station, is currently developing in the direction of integration (multiple transport transfers) and conveni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D11/10E21D11/14E21D11/38E21D20/02
Inventor 宋超业贺维国赵晋友张美琴熊田芳王宁王蓉蓉杨超峰
Owner CHINA RAILWAY LIUYUAN GRP CO LTD
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