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Four-way-bottom construction vertical shaft arranged above underground excavation station and construction method

A technology for the construction of shafts and stations, which is applied to shaft equipment, earthwork drilling, shaft lining, etc., and can solve problems such as difficult control of construction ground subsidence and difficulty in ensuring the stability of shaft structures, achieving small amount of abandoned projects, high implementation efficiency, Practical effect

Pending Publication Date: 2020-05-15
BEIJING GENERAL MUNICIPAL ENG DESIGN & RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a construction shaft and a construction method for the four-way construction of the side wall at the bottom above the underground excavation station. It is difficult to guarantee the stability and the construction ground settlement is difficult to control

Method used

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  • Four-way-bottom construction vertical shaft arranged above underground excavation station and construction method
  • Four-way-bottom construction vertical shaft arranged above underground excavation station and construction method
  • Four-way-bottom construction vertical shaft arranged above underground excavation station and construction method

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Embodiment Construction

[0036] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0037] Such as Figure 1-4 Shown, a kind of construction method of the construction shaft that is placed at the bottom four-way above the underground excavation station comprises the following construction steps,

[0038] Step 1, construct the lock ring beam 9 at the ground position of the shaft pre-excavation, make the lock ring beam reinforcement cage 92 and reserve the frame column connecting rib 10 at the bottom of the lock ring beam reinforcement cage 92, and pour the lock ring The beam reinforcement cage 92 is made into a lock ring beam 9 and locked into a rectangular wellhead, and a circle of wall reinforcement cage is arranged on the inner ring of the upper end face of the lock ring beam reinforcement cage 92 and is poured into a well head enclosure wall 91 by concrete, see the attached figure 2 , 3 , 7, 10;

[0039] Step 2. In t...

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Abstract

The invention discloses a four-way-bottom-and-side-wall construction vertical shaft arranged above an underground excavation station and a construction method. The construction method comprises the following steps that 1, a fore shaft ring beam and a shaft mouth enclosing wall are constructed; 2, a construction vertical shaft foundation pit is excavated, a vertical shaft grating steel frame is erected, and concrete is sprayed for pouring to form a shaft protection wall; 3, the fore shaft ring beam is connected with a frame column reinforcement cage; 4, a fore shaft ring beam reinforcement cageand the frame column reinforcement cage are integrated through concrete pouring; 5, a frame column is constructed; 6, a frame beam reinforcement cage and the vertical shaft grating steel frame are welded into a whole through steel plate connecting joints; 7, a vertical shaft inner bottom plate is constructed; 8, a construction horizontal transverse channel is excavated; 9, small pilot tunnel excavation as well as in-tunnel beam and column structure system construction are adopted in the construction transverse channel; and 10, based on step 8, remaining opposite two-way side walls in the construction vertical shaft are broken, and primary supporting arch buckling construction is carried out. According to the vertical shaft, the structure is stable, and ground subsidence can be effectivelycontrolled.

Description

technical field [0001] The invention belongs to the technical field of construction shafts of urban rail transit projects, and in particular relates to a construction shaft and a construction method placed at the four-way at the bottom above the underground excavation station. Background technique [0002] At present, for large and super-large cities with dense rail transit network, newly-built subway stations are mostly located in urban centers with heavy traffic, numerous pipelines, and important buildings and structures, and the surrounding environment is complex and land use is tight. Even if the station adopts the underground excavation method, it is difficult to find an available construction site on the side of the station in many cases. The existing design methods for shafts in roads mainly include the following two types: ① setting lining walls in the shaft; ② setting corner columns and concealed beams at the corners of the shaft. For the first design method, a lin...

Claims

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Application Information

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IPC IPC(8): E21D5/11
CPCE21D5/11
Inventor 侯宇迪邹彪惠丽萍李名淦吕亮薛茹镜贾明辉高辛财
Owner BEIJING GENERAL MUNICIPAL ENG DESIGN & RES INST
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