A cover-excavation underground passage structure and its construction method

A technology for underground passage, cover and dig reverse operation, applied in the field of construction engineering, can solve the problems of long construction period, narrow work space and high construction cost, and achieve the effect of reducing construction cost and construction period, simple construction process and saving construction period

Active Publication Date: 2021-10-15
CHINA CONSTR SECOND ENG BUREAU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a cover-excavation reverse underground passage structure and its construction method to solve the technical problems of traditional cover-excavation construction with narrow working space, long construction period and high construction cost

Method used

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  • A cover-excavation underground passage structure and its construction method
  • A cover-excavation underground passage structure and its construction method
  • A cover-excavation underground passage structure and its construction method

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Embodiment Construction

[0040] In this embodiment, the pile foundation construction is carried out first in the cover-excavation and reverse work area. After the pile foundation construction is completed, the wall laitance is removed, the debris at the pile head is cleaned, and the crown beam 7 and the hanging wall reinforcement 9 are tied. The part beyond the bottom surface of the crown beam 7 is connected with the top horizontal steel bar 11, and then the formwork is supported and the concrete for the roof 3 and the hanging wall 2 is poured. After the concrete strength reaches 100%, it can be backfilled and handed over to the area above the underground passage for anti-terrorism warning The building is under construction outdoors.

[0041] After the earthwork backfilling in the cover-excavation area is completed, the excavation of the lower layer of earthwork needs to wait for the open excavation area 14 on both sides to be excavated to the bottom of the pit, and then the excavator will excavate fro...

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Abstract

A cover-excavation underground passage structure and its construction method, comprising a first retaining pile, a hanging wall, a roof, a first side wall, and a first floor; the first retaining piles are arranged at intervals along the two sides of the passage There is a crown beam on the top of the first retaining pile in each group; there are two hanging walls, which are respectively arranged on the left and right sides of the roof, and the two hanging walls hang the roof at the design position; the upper end of the hanging wall is fixed to the crown beam connection; the first side wall has two pieces, which are correspondingly arranged at the bottom of the two hanging walls; the first bottom plate is set between the bottoms of the two first side walls; the first side wall and the hanging wall are connected with the first Filling layers are filled between the support piles; open-cut underground passage structures are respectively constructed on both sides of the cover-excavation underground passage structure; the open-cut underground passage structure includes the second support piles, the second side wall and the second floor. The invention solves the technical problems of narrow working space, long construction period and high construction cost in traditional cover-and-excavation construction.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, in particular to a cover-dig reverse underground passage structure and a construction method thereof. Background technique [0002] The west side of the underground emergency passage of a certain project is connected with the residential building, passes through the outdoor underground space of the anti-terrorism warning building, and the east side is equipped with an entrance and exit to connect with the bus inspection site; the cover-excavation area is located in the outdoor area of ​​the anti-terrorism warning building. Since the handover date of the anti-terrorist alert building is earlier than the construction of the underground emergency passage structure, in order to ensure the smooth handover of the anti-terrorist alert building and provide operating conditions for the construction of the outdoor floor of the anti-terrorist alert building, the underground emergency passage...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D29/055
CPCE02D29/055
Inventor 邓杰豪黄俊陈之赖宋英张鹏张洪庆桓忠雄郭淯晟马凯程瑶王磊郭斌
Owner CHINA CONSTR SECOND ENG BUREAU LTD
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