CN209557009U - A kind of reinforcing construction suitable for soft layer shield tunnel - Google Patents
A kind of reinforcing construction suitable for soft layer shield tunnel Download PDFInfo
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- CN209557009U CN209557009U CN201920130167.8U CN201920130167U CN209557009U CN 209557009 U CN209557009 U CN 209557009U CN 201920130167 U CN201920130167 U CN 201920130167U CN 209557009 U CN209557009 U CN 209557009U
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- soft layer
- shield tunnel
- axes agitating
- agitating pile
- reinforcing
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Abstract
A kind of reinforcing construction suitable for soft layer shield tunnel reduces later period operation tunnel structure because disease occurs in relative settlement effectively to avoid shield construction ground sedimentation and tunnel deformation exceeded.The soft layer around shield tunnel profile is reinforced before excavating, longitudinally, laterally three axes agitating pile is arranged in interval in reinforcing scope, each three axes agitating pile extends downward into stable supporting course stratigraphic boundary by ground line, three axes agitating pile reality stake reinforcing body is formed in the shield tunnel profile haunch above certain altitude to the soft layer stablized within the scope of supporting course, in three axes agitating pile reality stake reinforcing body with formation three axes agitating pile sky stake reinforcing body in the soft layer within the scope of ground line.
Description
Technical field
The utility model relates to shield tunnel, in particular to a kind of reinforcing construction suitable for soft layer shield tunnel.
Background technique
The soft layers such as mud, muck soil all have that water content is high, void ratio is big, compressibility is high, shearing strength is low, clever
The features such as sensitivity is high.Shield tunnel is built in deep soft stratum not only needs to consider that ground is heavy in shield-tunneling construction tunneling process
Drop and tunnel deformation problem, and need to consider the diseases such as operation stage in later period tunnel long-term settlement, leakage, railway roadbed disengagement,
Build subway city experience have shown that: weak soil subway is very big in the settling amount of operation phase, reaches that stablize the required time also very long, and
Apparent inhomogeneities is presented in sedimentation.The Tokyo secondary all new lines that border on the sea are built in 1980, to maximum settlement when actual measurement in 1996
Reach 750mm.Shanghai Underground No.1 line is open to traffic so far from nineteen ninety-five, more serious Longitudinal Settlement occurs, maximum
Cumulative settling amount is more than 200mm, and annual maximum difference sedimentation reaches 30mm, leads to tunnel structure Local Cracking, infiltration occurs, emits mud
Phenomenon.
Shield tunnel construction and problems of operation are built for soft soil layer, needs to study a kind of shield for being used in the stratum
Tunnel aid in treatment method and measure.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of reinforcing structures suitable for soft layer shield tunnel
It makes, effectively to avoid shield construction ground sedimentation and tunnel deformation exceeded, reduces later period operation tunnel structure because relative settlement goes out
Existing disease.
It is as follows that the utility model solves technical solution used by its technical problem:
A kind of reinforcing construction suitable for soft layer shield tunnel of the utility model, to shield tunnel wheel before excavating
Soft layer around wide is reinforced, it is characterized in that: the longitudinally, laterally interval setting three axes agitating pile in reinforcing scope, respectively
Three axes agitating pile extends downward into stable supporting course by ground line, holds in the above certain altitude of shield tunnel profile haunch to stabilization
Three axes agitating pile reality stake reinforcing body is formed in soft layer within the scope of power layer, in three axes agitating pile reality stake reinforcing body up to ground
Three axes agitating pile sky stake reinforcing body is formed in soft layer within the scope of upper thread.
The three axes agitating pile is in grid-like laying on the ground.
The utility model has the beneficial effects that can effectively limit, tunnel is vertical and lateral deformation, also improves shield driving
Formation condition is conducive to the control of shield attitude, guarantees pipe sheet assembling quality；Soft layer reinforcing body is by three axes agitating pile reality stake
Reinforcing body and three axes agitating pile sky stake are reinforced bluk recombination and are constituted, and shield tunnel problem on deformation, but also cost saving can be not only solved,
With wide promotion prospect.
Detailed description of the invention
This specification includes following two width attached drawing:
Fig. 1 is a kind of top view of the reinforcing construction suitable for soft layer shield tunnel of the utility model；
Fig. 2 is a kind of cross-section diagram of the reinforcing construction suitable for soft layer shield tunnel of the utility model；
Component and corresponding label are shown in figure: shield tunnel profile 1, three axes agitating pile 2, three axes agitating pile reality stake are reinforced
Body 3, ground line 5, stablizes supporting course 6 at three axes agitating pile sky stake reinforcing body 4.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Referring to Figures 1 and 2, a kind of reinforcing construction suitable for soft layer shield tunnel of the utility model, in excavation
The preceding soft layer to around shield tunnel profile 1 is reinforced, and longitudinally, laterally setting three axis in interval stir in reinforcing scope
Stake 2, each three axes agitating pile 2 extends downward into stable supporting course 6 by ground line 5.Stirring is utilized in 2 work progress of three axes agitating pile
Cement jet is entered the soil body and is sufficiently stirred by stake machine, makes cement and soil that a series of physical chemical reaction occur, weak soil is made to harden and mention
High foundation strength is formed in the above certain altitude of 1 haunch of shield tunnel profile to the soft layer stablized in 6 range of supporting course
Three axes agitating pile reality stake reinforcing body 3, in three axes agitating pile reality stake reinforcing body 3 in the soft layer in 5 range of ground line
Form three axes agitating pile sky stake reinforcing body 4.It can effectively limit that tunnel is vertical and lateral deformation, also improve shield driving stratum item
Part is conducive to the control of shield attitude, guarantees pipe sheet assembling quality.Soft layer reinforcing body is by three axes agitating pile reality stake reinforcing body
3 and the compound composition of three axes agitating pile sky stake reinforcing body 4, it can not only solve shield tunnel problem on deformation, but also cost saving.
Referring to Fig.1, to improve consolidation effect, three axes agitating pile 2 is refined along shield tunnel vertical, horizontal and is arranged, three axis stir
Stake 2 is mixed on the ground in grid-like laying.
Referring to Fig. 2, to save reinforcement cost, the height of the three axes agitating pile reality stake reinforcing body 3 is usually by shield tunnel
It is more than 1 haunch of profile 1 meter to stablizing supporting course 6.In general, cement mixing content is not less than in three axes agitating pile reality stake reinforcing body 3
22%, and cement mixing content is not less than 8% in three axes agitating pile sky stake reinforcing body 4.
The above is a kind of reinforcing construction suitable for soft layer shield tunnel of the utility model that explains through diagrams
Some principles, be not intended to for the utility model to be confined to shown in and the specific structure and the scope of application in, therefore it is all
All corresponding modifications that may be utilized and equivalent, belong to the applied the scope of the patents of the utility model.
Claims (3)
1. a kind of reinforcing construction suitable for soft layer shield tunnel, to soft around shield tunnel profile (1) before excavating
Weak soil layer is reinforced, it is characterized in that: longitudinally, laterally interval setting three axes agitating pile (2) in reinforcing scope, each three axis stirring
Stake (2) by ground line (5) extends downward into stable supporting course (6), in the above certain altitude of shield tunnel profile (1) haunch to steady
Three axes agitating pile reality stake reinforcing body (3) are formed in soft layer in retention force layer (6) range, are reinforced in three axes agitating pile reality stake
Body (3) is to form three axes agitating pile sky stake reinforcing body (4) in the soft layer in ground line (5) range.
2. a kind of reinforcing construction suitable for soft layer shield tunnel as described in claim 1, it is characterized in that: three axis
Mixing pile (2) is in grid-like laying on the ground.
3. a kind of reinforcing construction suitable for soft layer shield tunnel as described in claim 1, it is characterized in that: three axis
The height of mixing pile reality stake reinforcing body (3) is by more than shield tunnel profile (1) haunch 1 meter to stablizing supporting course (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920130167.8U CN209557009U (en) | 2019-01-25 | 2019-01-25 | A kind of reinforcing construction suitable for soft layer shield tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920130167.8U CN209557009U (en) | 2019-01-25 | 2019-01-25 | A kind of reinforcing construction suitable for soft layer shield tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209557009U true CN209557009U (en) | 2019-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920130167.8U Active CN209557009U (en) | 2019-01-25 | 2019-01-25 | A kind of reinforcing construction suitable for soft layer shield tunnel |
Country Status (1)
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| CN (1) | CN209557009U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734448A (en) * | 2020-06-22 | 2020-10-02 | 上海隧道工程有限公司 | Structure and method for reinforcing vertical channel between underground space structure and shield tunnel |
| CN111764926A (en) * | 2020-08-03 | 2020-10-13 | 中铁二院工程集团有限责任公司 | Control structure and control method for long-term settlement of shield or pipe-jacking tunnel |
-
2019
- 2019-01-25 CN CN201920130167.8U patent/CN209557009U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734448A (en) * | 2020-06-22 | 2020-10-02 | 上海隧道工程有限公司 | Structure and method for reinforcing vertical channel between underground space structure and shield tunnel |
| CN111764926A (en) * | 2020-08-03 | 2020-10-13 | 中铁二院工程集团有限责任公司 | Control structure and control method for long-term settlement of shield or pipe-jacking tunnel |
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