Multi-layer pipe roof structure based on square jacking pipe and construction method of multi-layer pipe roof structure

A technology of multi-layer pipes and square steel pipes is applied in the field of tunnel pipe curtains, which can solve the problems of high groundwater control risk, large distance between pipes, and large construction area, and achieves reduction in size, construction area, and the effect of risk

Pending Publication Date: 2022-03-11
JSTI GRP CO LTD +2
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problems that the existing pipe curtain structure method adopts circular steel pipes, the construction occupies a large area, requires pipes of various sizes and jacking equipment, the distance between pipes is large, soil collapse is prone to occur, and the risk of groundwater control is high. The present invention provides a method based on Multi-layer pipe curtain structure and its construction method for square pipe jacking

Method used

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  • Multi-layer pipe roof structure based on square jacking pipe and construction method of multi-layer pipe roof structure
  • Multi-layer pipe roof structure based on square jacking pipe and construction method of multi-layer pipe roof structure
  • Multi-layer pipe roof structure based on square jacking pipe and construction method of multi-layer pipe roof structure

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Embodiment 1

[0061] Such as Figure 1-Figure 5 As shown: this embodiment discloses a multi-layer pipe curtain structure based on square pipe jacking, including: a plurality of square steel pipes 30; two of the plurality of square steel pipes 30 are fixed and communicated with each other by means of connecting components to form a first Closed space 10; a plurality of square steel pipes 30 are combined to form a plurality of second closed spaces 20; the first closed space 10 is used as a construction corridor for pouring reinforced concrete structures; the plurality of second closed spaces 20 For vehicle traffic. Before the jacking of each square steel pipe 30, the inner wall of the steel pipe is welded with a circle of I-shaped steel purlins 31, and the outer flanges of the I-shaped steel purlins 31 are attached to the inner walls of the square steel pipes 30; Two I-shaped steel supports 32 are welded symmetrically between the upper and lower sides of the I-shaped steel purlin 31 , and th...

Embodiment 2

[0078] See attached figure 1 , a structural schematic diagram of a pipe jacking joint based on a square pipe jacking multi-layer pipe curtain structure provided in this embodiment, its main features are: it is a circle of square steel pipes 30 jacked along the outline of the rectangular tunnel structure, and the square steel pipes 30 Not only as a temporary support for the pouring of the tunnel structure, but also as a permanent structure of the tunnel, the water-stop lock 41 is welded between adjacent square steel pipes 30, and the distance between the square steel pipes 30 is set as small as possible, but it should meet the requirements of jacking between the pipes. Deviation requirements, in order to control the risk of water stop between pipes and soil excavation between pipes. I-shaped steel purlins 31 and I-shaped steel supports 32 are welded in the pipe to enhance the stress of the square steel pipe 30 .

[0079] See attached figure 2 , a schematic diagram of the str...

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Abstract

The invention relates to a multi-layer pipe roof structure based on square jacking pipes. The multi-layer pipe roof structure comprises a plurality of square steel pipes; every two square steel pipes are fixedly communicated through a connecting assembly to form a first closed space. The plurality of square steel pipes are combined to define a plurality of second closed spaces; the first closed space is used as a construction gallery for pouring a reinforced concrete structure; and the plurality of second closed spaces are used for vehicles to pass through. According to the multi-layer pipe curtain structure provided by the invention, the sizes of the tunnel section and the working well can be effectively reduced, and the construction land occupation and the influence on the surrounding environment are reduced; the square steel pipes can be better attached to the outline of a rectangular tunnel structure, especially a multi-layer porous rectangular tunnel, the distance between the adjacent steel pipes is the distance between the openings between the pipes, the range of a non-support soil body between the pipes is reduced, and the risks of pipe wall cutting and soil body excavation between the pipes are greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of tunnel pipe curtains, and in particular relates to a multilayer pipe curtain structure based on square pipe jacking and a construction method thereof. Background technique [0002] As a brand-new underground excavation method, the pipe curtain structure method (also called "new pipe curtain method") has obvious advantages in deformation control under the condition of limited space, and can better protect the surrounding existing buildings. There are more and more underground projects for important buildings (structures) such as railways and cultural relics, and their applications are becoming more and more frequent. The technical characteristics of this construction method are different from the traditional pipe curtain construction method: it first jacks the large-diameter pipe, cuts the pipe wall, erects the support between the pipes, binds the steel bars in the pipe, pours to form all or part of the pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D11/10
CPCE21D9/001E21D11/10
Inventor 赵光黄俊彭安琪张再兴俞蔡城陈研严伟垚杜恭榜徐斌邓长飞郭映飞王康
Owner JSTI GRP CO LTD
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