CN214062954U - Construction system for shield to pass through barrier below operation station - Google Patents
Construction system for shield to pass through barrier below operation station Download PDFInfo
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- CN214062954U CN214062954U CN202022554586.XU CN202022554586U CN214062954U CN 214062954 U CN214062954 U CN 214062954U CN 202022554586 U CN202022554586 U CN 202022554586U CN 214062954 U CN214062954 U CN 214062954U
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Abstract
The utility model discloses a shield constructs construction system that passes through operation station below barrier, a serial communication port construction system is including arranging in the work well of removing obstacles of existing subway station both sides and being located the frozen soil curtain of existing subway station below, the degree of depth of frozen soil curtain is not less than the degree of depth of work well of removing obstacles, be provided with supporting beam in the work well of removing obstacles. The utility model has the advantages that: the construction system has a simple structure, and can overcome the defect that the existing shield equipment does not cut large-size and high-strength barriers; all barriers in the tunneling section of the shield are effectively removed, and conditions are created for the shield to pass smoothly; the influence on the existing operation station is reduced to the maximum extent, and reference is provided for similar projects.
Description
Technical Field
The utility model relates to a shield tunnel technical field, concretely relates to shield constructs and passes through construction system who operates station below barrier.
Background
With the continuous development of rail transit construction planning and construction scale, the condition that a built line passes through under an established subway station without reservation often appears.
In view of the fact that the existing shield equipment does not have the capability of cutting large-size and high-strength barriers, a technical person in the field needs a scheme for performing pre-obstacle-clearing treatment before the shield passes through an operation station.
Disclosure of Invention
The utility model aims at providing a shield constructs and passes through construction system who operates station below barrier according to the weak point of above-mentioned prior art, this construction system is through setting up the work well of removing obstacles in the both sides at existing subway station to freeze the soil body formation and freeze the curtain and support the soil body under the station through the bottom plate below at existing subway station, be convenient for chisel out the barrier of removing obstacles in the shield tunnelling section.
The utility model discloses the purpose is realized accomplishing by following technical scheme:
the utility model provides a shield constructs construction system that passes through operation station below barrier, its characterized in that construction system is including arranging in the work well of removing obstacles of existing subway station both sides and being located frozen soil curtain of existing subway station below, the degree of depth of frozen soil curtain is not less than the degree of depth of work well of removing obstacles, be provided with supporting beam and bottom plate in the work well of removing obstacles.
The two sides of the bottom of the existing subway station are the underground continuous walls of the existing station, and the frozen soil curtains which are in a cake shape are respectively arranged on the inner sides of the underground continuous walls of the existing station every time.
There are a plurality of pile foundations under the bottom plate of existing subway station interval distribution, the bottom plate below of existing subway station is provided with and is the tubbiness frozen soil curtain, is the tubbiness the side of frozen soil curtain has the excavation clear barrier passageway of constituteing by interim shaped steel support and guard gate.
The utility model has the advantages that: the construction system has a simple structure, and can overcome the defect that the existing shield equipment does not cut large-size and high-strength barriers; all barriers in the tunneling section of the shield are effectively removed, and conditions are created for the shield to pass smoothly; the influence on the existing operation station is reduced to the maximum extent, and reference is provided for similar projects.
Drawings
Fig. 1 is a schematic plan layout view of a construction system for a middle shield to pass through a pile foundation barrier below an operation station;
fig. 2 is a vertical cross-sectional view of the construction system of the middle shield for passing through the pile foundation barrier below the operation station;
fig. 3 is a schematic plan layout view of the construction system of the underground continuous wall barrier below the middle shield crossing operation station of the utility model;
figure 4 is the utility model discloses well shield constructs the vertical cross-sectional view of the construction system who passes through operation station below underground continuous wall barrier.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of example with reference to the accompanying drawings, for the understanding of those skilled in the art:
referring to fig. 1-4, the labels 1-10 in the figures are: the subway station comprises an existing subway station 1, a barrier removing working well 2, a continuous wall 3, a pile foundation 4, a 'cake-shaped' frozen soil curtain 5, a 'barrel-shaped' frozen soil curtain 6, a supporting beam 7, a bottom plate 8, a protective door 9 and a profile steel support 10.
Example 1: as shown in fig. 1 and 2, the present embodiment relates to a construction system for a shield to pass through a pile foundation barrier below an operation station, and the construction system mainly includes barrier clearing work wells 2 arranged at both sides of an existing subway station 1 and a "barrel-shaped" frozen soil curtain 6 arranged below a bottom plate of the existing subway station 1.
As shown in fig. 1 and 2, the obstacle clearing working wells 2 are respectively arranged on two sides of the existing subway station 1, the depth of the obstacle clearing working wells 2 is below the bottom plate of the existing subway station 1, a plurality of supporting cross beams 7 are arranged at intervals in the obstacle clearing working wells in the vertical direction for supporting, and a bottom plate 8 is arranged at the bottom of the obstacle clearing working wells.
As shown in fig. 1 and 2, a plurality of pile foundations 4 are arranged at intervals below a bottom plate of an existing subway station 1, and the pile foundations 4 are barriers on a newly-built shield tunnel line. The 'barrel-shaped' frozen soil curtain 6 is frozen and constructed below the bottom plate of the existing subway station 1 and is in a square barrel-shaped structure. Under the protection of the frozen soil curtain, a rectangular small-section channel is formed by excavating from the obstacle clearing working well 2 through a protective door 9, the section steel support 10 is erected while excavating, each pile 4 is chiseled in the channel, after obstacle clearing is completed, the obstacle clearing working well 2, the obstacle clearing channel and the like are backfilled, and after backfilling is completed, a newly-built shield tunnel is tunneled.
Example 2: as shown in fig. 3 and 4, the present embodiment relates to a construction system for a shield to pass through an obstacle below an operation station, and the construction system mainly includes barrier removal working wells 2 disposed at both sides of an existing subway station 1 and a "cake-shaped" frozen soil curtain 5 disposed below a bottom plate of the existing subway station 1.
As shown in fig. 3 and 4, the obstacle clearing working wells 2 are respectively arranged on two sides of the existing subway station 1, the depth of the obstacle clearing working wells 2 is below the bottom plate of the existing subway station 1, a plurality of supporting cross beams 7 are arranged at intervals in the obstacle clearing working wells in the vertical direction for supporting, and a bottom plate 8 is arranged at the bottom of the obstacle clearing working wells.
As shown in fig. 3 and 4, vertical underground continuous walls 3 are respectively arranged on two sides below a bottom plate of an existing subway station 1, and the two underground continuous walls 3 are barriers on a newly-built shield tunnel line. The cake-shaped frozen soil curtain 5 is frozen and constructed below the bottom plate of the existing subway station 1, has two paths and is respectively arranged close to the inner side of the underground continuous wall 3, and the freezing arrangement of the cake-shaped frozen soil curtain 5 can play a role in supporting the soil body on the inner side of the underground continuous wall 3. Under the protection of the cake-shaped frozen soil curtain 5, the underground continuous wall 3 is chiseled and obstacles are removed from the working well 3, after the obstacles are removed, the obstacle-removed working well 2 and the like are backfilled, and after the backfilling is completed, a newly-built shield tunnel is tunneled and passed through.
The beneficial effect of this embodiment does: the construction system has a simple structure, and can overcome the defect that the existing shield equipment does not cut large-size and high-strength barriers; all barriers in the tunneling section of the shield are effectively removed, and conditions are created for the shield to pass smoothly; the influence on the existing operation station is reduced to the maximum extent, and reference is provided for similar projects.
Claims (3)
1. The utility model provides a shield constructs construction system that passes through operation station below barrier, its characterized in that construction system is including arranging in the work well of removing obstacles of existing subway station both sides and being located frozen soil curtain of existing subway station below, the degree of depth of frozen soil curtain is not less than the degree of depth of work well of removing obstacles, be provided with supporting beam and bottom plate in the work well of removing obstacles.
2. The construction system for the shield tunneling through the barrier under the station according to claim 1, wherein the two sides of the bottom of the existing subway station are the underground continuous walls of the existing station, and the frozen soil curtains in a shape of a cake are respectively arranged on the inner sides of the underground continuous walls of the existing station.
3. The system of claim 1, wherein a plurality of pile foundations are spaced under a bottom plate of the existing subway station, the frozen soil curtain is arranged under the bottom plate of the existing subway station in a barrel shape, and an excavation clearance channel composed of a temporary steel support and a guard gate is arranged on a side surface of the frozen soil curtain in the barrel shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022554586.XU CN214062954U (en) | 2020-11-08 | 2020-11-08 | Construction system for shield to pass through barrier below operation station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022554586.XU CN214062954U (en) | 2020-11-08 | 2020-11-08 | Construction system for shield to pass through barrier below operation station |
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| Publication Number | Publication Date |
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| CN214062954U true CN214062954U (en) | 2021-08-27 |
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| CN202022554586.XU Active CN214062954U (en) | 2020-11-08 | 2020-11-08 | Construction system for shield to pass through barrier below operation station |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803073A (en) * | 2021-09-27 | 2021-12-17 | 长江勘测规划设计研究有限责任公司 | Construction method of tunnel structure for manually removing obstacles on water-rich sand layer |
| CN113803074A (en) * | 2021-09-27 | 2021-12-17 | 长江勘测规划设计研究有限责任公司 | Construction method of tunnel structure for artificial and mechanical combined obstacle removal of water-rich sand layer |
| CN114198108A (en) * | 2021-12-21 | 2022-03-18 | 中铁一局集团有限公司 | Method for breaking and removing obstacles of shield-driven downward-passing existing station enclosure structure in water-rich sand layer |
-
2020
- 2020-11-08 CN CN202022554586.XU patent/CN214062954U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803073A (en) * | 2021-09-27 | 2021-12-17 | 长江勘测规划设计研究有限责任公司 | Construction method of tunnel structure for manually removing obstacles on water-rich sand layer |
| CN113803074A (en) * | 2021-09-27 | 2021-12-17 | 长江勘测规划设计研究有限责任公司 | Construction method of tunnel structure for artificial and mechanical combined obstacle removal of water-rich sand layer |
| CN113803073B (en) * | 2021-09-27 | 2024-01-19 | 长江勘测规划设计研究有限责任公司 | Construction method of tunnel structure for manually clearing obstacle in water-rich sand layer |
| CN114198108A (en) * | 2021-12-21 | 2022-03-18 | 中铁一局集团有限公司 | Method for breaking and removing obstacles of shield-driven downward-passing existing station enclosure structure in water-rich sand layer |
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