CN208793021U - A kind of shield tunnel anti-floating control structure - Google Patents
A kind of shield tunnel anti-floating control structure Download PDFInfo
- Publication number
- CN208793021U CN208793021U CN201821611903.3U CN201821611903U CN208793021U CN 208793021 U CN208793021 U CN 208793021U CN 201821611903 U CN201821611903 U CN 201821611903U CN 208793021 U CN208793021 U CN 208793021U
- Authority
- CN
- China
- Prior art keywords
- jurisdiction
- section
- billet
- control structure
- shield tunnel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a kind of shield tunnel anti-floating control structures, the rod assembly and the billet in tunnel bottom section of jurisdiction being arranged radially including tunnel lining segment, along section of jurisdiction, the billet is consistent with section of jurisdiction curvature, described rod assembly one end is embedded in the soil body after passing through section of jurisdiction preformed hole, and the other end is connected with billet；It further include stayed mast, the stayed mast connects the billet of adjacent each endless tube on piece.The utility model in tunnel bottom section of jurisdiction by being arranged billet and rod assembly, the rod assembly can enhance the attachment force on lining segment and stratum, and the billet of adjacent each endless tube on piece is connected by stayed mast, to which longitudinal each ring lining segment connection is integral, solve the problems, such as that the overall stability between longitudinal section of jurisdiction cannot be guaranteed, the anti-floating ability for improving liner structure connects bolt destruction, the section of jurisdiction water-stop glue band risks such as water-stagnating effect reduction, section of jurisdiction faulting of slab ends caused by reducing because of duct piece float upward.
Description
Technical field
The utility model relates to shield tunnel project field, in particular to a kind of shield tunnel anti-floating control structure.
Background technique
With the development and utilization of city track traffic engineering, shield construction fast, construction safety, machine with its driving speed
The features such as tool degree is high is applied in metro construction more and more widely.
However, soft soil layer is often managed before finally solidification and country rock are closely connected from shield segment assembling cyclization to slurries
Piece rising phenomenon.Duct piece float upward refers to that section of jurisdiction after deviating from tail shield, is influenced by factors such as geology, water, synchronous slurries, causes pipe
The phenomenon that piece shifts up, when mostly occurring in section of jurisdiction and just deviate from shield machine shield tail.There are mainly two types of lining segment floats
Harm: first is that duct piece float upward causes section of jurisdiction Forming Quality defect (section of jurisdiction faulting of slab ends), when faulting of slab ends reaches 15mm when section of jurisdiction, segment bolt
Junction will appear breakage, while duct piece float upward influences the water-stagnating effect of section of jurisdiction article rubber water stop, causes section of jurisdiction percolating water；Second is that pipe
Piece posture transfinites, and directly affects whether tunnel line style meets design axis and whether meet tunnel construction boundary.
There is certain limitation in the anti-floating system provided in existing Chinese utility model patent 201710455452.2, system is not
It can guarantee longitudinal overall stability when duct piece float upward.Therefore, a kind of anti-floating for shield tunnel of utility model is needed to control
Structure can provide preferable overall stability for section of jurisdiction, and in safe range by the limitation of the floating of section of jurisdiction, not to shield tunnel
Road causes damages.
Utility model content
The utility model aim is: in shield tunnel construction, section of jurisdiction is after deviating from shield tail shield, by ground
The problem of factors such as matter, water, synchronous slurries influence and cause duct piece float upward, provides a kind of shield tunnel anti-floating control structure, should
Anti-floating control structure passes through the attachment force of enhancing lining segment and stratum, while longitudinal each ring lining segment connection is integral,
The anti-floating ability of liner structure is greatly improved, the overall stability for overcoming in existing solution longitudinal section of jurisdiction cannot be guaranteed,
The disadvantages of anchor pole breakout capacity is weaker.
To achieve the goals above, the technical solution adopted in the utility model are as follows:
A kind of shield tunnel anti-floating control structure, the rod assembly being arranged radially including tunnel lining segment, along section of jurisdiction and
Billet in tunnel bottom section of jurisdiction, the billet is consistent with section of jurisdiction curvature, and described rod assembly one end passes through section of jurisdiction
It is embedded in the soil body after preformed hole, the other end is connected with billet；It further include stayed mast, the stayed mast connects adjacent each endless tube piece
On billet.
The utility model by be arranged in tunnel bottom section of jurisdiction with the consistent billet of section of jurisdiction curvature, and along section of jurisdiction diameter
To the rod assembly of setting, and rod assembly one end is embedded in the soil body after the preformed hole of section of jurisdiction, and the other end is connected with billet,
The rod assembly can enhance the attachment force on lining segment and stratum, and billet can to avoid section of jurisdiction by pulling force when damage, and
The billet of adjacent each endless tube on piece is connected by stayed mast, thus longitudinal each ring lining segment connection is integral, it solves
The problem of overall stability between longitudinal section of jurisdiction cannot be guaranteed in the prior art, be conducive to the anti-floating ability for improving liner structure,
Bolt destruction, section of jurisdiction water-stop glue band water-stagnating effect reduction, section of jurisdiction faulting of slab ends etc. are connected caused by greatly reducing because of duct piece float upward
Risk.
As a preferred embodiment of the present invention, the rod assembly is arranged within the scope of 60 ° of tunnel arch bottom or so, can be made
Rod assembly bears pulling force, is conducive to control duct piece float upward, the float Structure is also facilitated to construct.
As a preferred embodiment of the present invention, the rod assembly includes enlarged footing anchor pole and soil nailing.By using expansion
Large-head anchor rod enables bearing capacity to significantly improve, and is equipped with soil nailing within the scope of the anchoring body of finite length, improves
The shearing strength of the tunnel bottom soil body, enlarged footing anchor pole are combined with soil nailing, close tunnel lining segment and the tunnel bottom soil body
It is integrated, improves the anti-floating ability of the shield tunnel under the influence of factors such as geology, water, synchronous slurries energetically.
As a preferred embodiment of the present invention, the enlarged footing anchor pole circumferential direction spacing be 20 ° arrangement, can make section of jurisdiction by
The axis force of anchor arrived is uniform.
As a preferred embodiment of the present invention, the soil nailing compartment of terrain is arranged between enlarged footing anchor pole, in enlarged footing anchor
Soil nailing is set between bar, improves the shearing strength of the tunnel bottom soil body.
As a preferred embodiment of the present invention, the enlarged footing anchor pole includes anchor head, free segment and enlarged footing anchoring section,
Wherein anchor head is arranged on billet, and free segment and enlarged footing anchoring section are arranged in the soil body.By using enlarged footing anchor pole,
Bearing capacity is set to significantly improve within the scope of the anchoring body of finite length, so as to provide bigger anchor force for section of jurisdiction.
As a preferred embodiment of the present invention, the enlarged footing anchor pole includes Grouting Pipe and Ribbed Bar, described with ribbing
Steel bar arrangement is in Grouting Pipe, and arranged for interval has steel structure supporting body in Ribbed Bar, is conducive to increase Ribbed Bar and cement
Starch the pulling capacity between induration.
As a preferred embodiment of the present invention, the Ribbed Bar surface is brushed with corrosion-inhibiting coating, is conducive to improve with ribbing
The corrosion resistance of reinforcing bar.
As a preferred embodiment of the present invention, the billet is equipped with link block, and the stayed mast connects adjacent steel
Link block on backing plate, to facilitate the installation of stayed mast.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are:
1, the utility model by be arranged in tunnel bottom section of jurisdiction with the consistent billet of section of jurisdiction curvature, and along section of jurisdiction
The rod assembly being arranged radially, and rod assembly one end is embedded in the soil body after the preformed hole of section of jurisdiction, the other end and billet phase
Even, which can enhance the attachment force on lining segment and stratum, and billet can to avoid section of jurisdiction by pulling force when damage,
And the billet of adjacent each endless tube on piece is connected by stayed mast, so that longitudinal each ring lining segment is connected integral, solution
The problem of overall stability between longitudinal section of jurisdiction cannot be guaranteed in the prior art, be conducive to the anti-floating energy for improving liner structure
Power connects bolt destruction caused by greatly reducing because of duct piece float upward, water-stop glue band water-stagnating effect in section of jurisdiction reduces, section of jurisdiction faulting of slab ends
Etc. risks；
2, by using enlarged footing anchor pole, bearing capacity is enable to significantly improve within the scope of the anchoring body of finite length,
And it is equipped with soil nailing, the shearing strength of the tunnel bottom soil body is improved, enlarged footing anchor pole is combined with soil nailing, makes tunnel-liner
Section of jurisdiction is integrated with the tunnel bottom soil body, improves the shield tunnel under the influence of factors such as geology, water, synchronous slurries energetically
Anti-floating ability；
3, by installing stayed mast on billet, the attachment force on lining segment and stratum is enhanced, and pass through stayed mast
Longitudinal each ring lining segment connection is integral, solve what the overall stability between longitudinal section of jurisdiction in the prior art cannot be guaranteed
Problem, and use is easy to operate, is easy to implement in engineering, can be suitably used for Soft Soil Layer shield tunnel and underwater shield tunnel.
Detailed description of the invention
Fig. 1 is the utility model shield tunnel anti-floating control structure overall perspective view.
Fig. 2 is the sectional schematic diagram in Fig. 1.
Fig. 3 is the enlarged footing anchor structure figure in the utility model.
Fig. 4 is the steel structure supporting body structure chart in the utility model.
Marked in the figure: the section of jurisdiction 1-, 2- enlarged footing anchor pole, 3- soil nailing, 4- Grouting Pipe, 5- anchor head, 6- link block, 7- steel pad
Plate, 8- stayed mast, 9- steel structure supporting body, 10- Ribbed Bar, 11- corrosion-inhibiting coating, 12- cement slurry induration.
Specific embodiment
With reference to the accompanying drawing, the utility model is described in detail.
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model.
Embodiment
The present embodiment provides a kind of shield tunnel anti-floating control structures；
As Figure 1-Figure 4, the shield tunnel anti-floating control structure in the present embodiment, including tunnel lining segment 1, edge pipe
The rod assembly that piece is arranged radially and the billet 7 in tunnel bottom section of jurisdiction, bolting in each endless tube piece bottom has steel
Backing plate, all billets are arranged in the same direction, and billet is consistent with section of jurisdiction curvature, and described rod assembly one end passes through
It is embedded in the soil body after the preformed hole of section of jurisdiction, the other end is connected with billet；It further include stayed mast 8, the stayed mast connection is adjacent each
The billet of endless tube on piece.
The utility model by be arranged in tunnel bottom section of jurisdiction with the consistent billet of section of jurisdiction curvature, and along section of jurisdiction diameter
To the rod assembly of setting, and rod assembly one end is embedded in the soil body after the preformed hole of section of jurisdiction, and the other end is connected with billet,
The rod assembly can enhance the attachment force on lining segment and stratum, and billet can to avoid section of jurisdiction by pulling force when damage, and
The billet of adjacent each endless tube on piece is connected by stayed mast, thus longitudinal each ring lining segment connection is integral, it solves
The problem of overall stability between longitudinal section of jurisdiction cannot be guaranteed in the prior art, be conducive to the anti-floating ability for improving liner structure,
Bolt destruction, section of jurisdiction water-stop glue band water-stagnating effect reduction, section of jurisdiction faulting of slab ends etc. are connected caused by greatly reducing because of duct piece float upward
Risk.
In the present embodiment, the rod assembly is arranged within the scope of 60 ° of tunnel arch bottom or so, and rod assembly can be made to bear to draw
Power is conducive to control duct piece float upward, the float Structure is also facilitated to construct.
In the present embodiment, the rod assembly includes enlarged footing anchor pole 2 and soil nailing 3.By using enlarged footing anchor pole, having
So that bearing capacity is significantly improved within the scope of the anchoring body of limit for length's degree, and be equipped with soil nailing, improves the tunnel bottom soil body
Shearing strength, enlarged footing anchor pole combines with soil nailing, so that tunnel lining segment is integrated with the tunnel bottom soil body, mention energetically
The anti-floating ability of the shield tunnel under the influence of factors such as geology, water, synchronous slurries is risen.
In the present embodiment, the circumferential spacing of the enlarged footing anchor pole 2 is 20 ° of arrangements, the axis force of anchor that section of jurisdiction can be made to be subject to
Uniformly, it avoids section of jurisdiction somewhere from stress occur to concentrate and damage.
In the present embodiment, 3 compartment of terrain of soil nailing is arranged between enlarged footing anchor pole 2, and soil nailing is arranged between enlarged footing anchor pole,
Improve the shearing strength of the tunnel bottom soil body.
In the present embodiment, the enlarged footing anchor pole includes anchor head 5, free segment and enlarged footing anchoring section, and wherein anchor head 5 is arranged
On billet 7, free segment and enlarged footing anchoring section are arranged in the soil body.By using enlarged footing anchor pole, in finite length
Bearing capacity is set to significantly improve within the scope of anchoring body, so as to provide bigger anchor force for section of jurisdiction.The enlarged footing anchor
Bar belongs to friction-support composite anchor-rod, wherein non-enlarged footing anchoring section generates frictional force, expands head section and generates bearing drag.
In the present embodiment, the enlarged footing anchor pole 2 includes Grouting Pipe 4 and Ribbed Bar 10, and the Ribbed Bar is arranged in
In Grouting Pipe, arranged for interval has steel structure supporting body 9 in Ribbed Bar 10, is conducive to increase Ribbed Bar and cement slurry induration
Pulling capacity between 12,10 surface of Ribbed Bar are brushed with corrosion-inhibiting coating 11, are conducive to the corrosion resistance for improving Ribbed Bar.
In the present embodiment, link block 6 is welded on the billet 7, the stayed mast 8 is along the longitudinally connected adjacent steel in tunnel
Link block 6 on backing plate 7, to facilitate the installation of stayed mast.
In the present embodiment, multiple link blocks 6 are uniformly provided with along each 7 circumferential direction of billet, and the connection on adjacent billet
Block is connected using stayed mast, and screw hole is equipped on link block, is bolt between stayed mast and link block, all after being installed
Stayed mast is longitudinally in multiple row arrangement along tunnel.
Shield tunnel anti-floating control structure in the present embodiment can use as follows:
A, prefabricated pipe section 1 and billet 7, and according to the design position situation of enlarged footing anchor pole 2, soil nailing 3, in section of jurisdiction and steel
Setting preformed hole corresponding with enlarged footing anchor pole, soil nailing position on backing plate；Billet carries out curved according to the curvature of pipe-plate lining
System；
B, using drilling machine on section of jurisdiction enlarged footing anchor pole, soil nailing reserve hole location to earth-boring, and drill size and
Depth is determined according to enlarged footing anchor pole, soil nailing；
C, nozzle is installed at enlarged footing design position, highly pressurised liquid is generated using high-pressure pump, high pressure is formed by nozzle
Injection a fluid stream cuts the soil body, forms the reaming of enlarged footing anchor pole；Using media such as recirculated water or cement slurries, to cutting
Particle afterwards is discharged, and forms biggish cavity in enlarged footing position；
D, billet 7 is installed in tunnel bottom section of jurisdiction 1；
E, anchor rod body is specially placed in specific bit in drilling by installation enlarged footing anchor pole and soil nailing and slip casting in drilling
It sets, by anchor rod body, fills entire soil body cavity with cement slurry displacement mud, form the enlarged footing of anchor pole；Soil nailing is squeezed into
Simultaneously slip casting in drilling；
F, after cement slurry sets and after reaching design strength, anchor pole tensioning is carried out, needs bilateral symmetry to carry out when anchor pole tensioning,
And be anchored on billet by anchor head, while by soil nailing and billet be bolted together, enlarged footing anchor pole with
After the completion of nail Construction, on demand at the stayed mast installed on billet between longitudinal each endless tube piece, by stayed mast by adjacent steel
Backing plate connection, even if longitudinal each endless tube piece is linked to be entirety.
It is drilled with enlarged footing anchor pole and soil nailing hole by prefabricated pipe section and billet, and to stratum, while being set in enlarged footing
It counts at position using reaming cavity is formed after the discharge of high-pressure injection a fluid stream cutting soil, then steel is installed in tunnel bottom section of jurisdiction
Backing plate, and enlarged footing anchor pole and soil nailing and slip casting are installed in drilling, after the completion of enlarged footing anchor pole and nail Construction, in billet
Upper installation stayed mast enhances the attachment force on lining segment and stratum, and is connected longitudinal each ring lining segment by stayed mast
It is integral, it solves the problems, such as that the overall stability between longitudinal section of jurisdiction in the prior art cannot be guaranteed, is conducive to improve lining cutting knot
The anti-floating ability of structure, and use is easy to operate, is easy to implement in engineering.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc. within the principle of utility model, should be included in the protection of the utility model
Within the scope of.
Claims (9)
1. a kind of shield tunnel anti-floating control structure, which is characterized in that including tunnel lining segment, the drawing being arranged radially along section of jurisdiction
Bar assembly and the billet in tunnel bottom section of jurisdiction, the billet is consistent with section of jurisdiction curvature, described rod assembly one end
It is embedded in the soil body after the preformed hole of section of jurisdiction, the other end is connected with billet；It further include stayed mast, the stayed mast connection is adjacent
The billet of each endless tube on piece.
2. shield tunnel anti-floating control structure according to claim 1, which is characterized in that the rod assembly is arranged in tunnel
Encircle within the scope of 60 ° of bottom or so in road.
3. shield tunnel anti-floating control structure according to claim 1 or 2, which is characterized in that the rod assembly includes
Enlarged footing anchor pole and soil nailing.
4. shield tunnel anti-floating control structure according to claim 3, which is characterized in that between the enlarged footing anchor pole is circumferential
Away from for 20 ° arrange.
5. shield tunnel anti-floating control structure according to claim 4, which is characterized in that the soil nailing compartment of terrain is arranged in
Between enlarged footing anchor pole.
6. shield tunnel anti-floating control structure according to claim 3, which is characterized in that the enlarged footing anchor pole includes anchor
Head, free segment and enlarged footing anchoring section, wherein anchor head is arranged on billet, and free segment and enlarged footing anchoring section are arranged in the soil body
In.
7. shield tunnel anti-floating control structure according to claim 6, which is characterized in that the enlarged footing anchor pole includes note
Slurry pipe and Ribbed Bar, the Ribbed Bar are arranged in Grouting Pipe, and arranged for interval has steel structure supporting body in Ribbed Bar.
8. shield tunnel anti-floating control structure according to claim 7, which is characterized in that the Ribbed Bar surface is brushed with
Corrosion-inhibiting coating.
9. shield tunnel anti-floating control structure according to claim 1, which is characterized in that the billet is equipped with connection
Block, the stayed mast connect the link block on adjacent billet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821611903.3U CN208793021U (en) | 2018-09-30 | 2018-09-30 | A kind of shield tunnel anti-floating control structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821611903.3U CN208793021U (en) | 2018-09-30 | 2018-09-30 | A kind of shield tunnel anti-floating control structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208793021U true CN208793021U (en) | 2019-04-26 |
Family
ID=66211439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821611903.3U Active CN208793021U (en) | 2018-09-30 | 2018-09-30 | A kind of shield tunnel anti-floating control structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208793021U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593894A (en) * | 2019-09-16 | 2019-12-20 | 重庆大学 | Novel shield tunnel concrete pipe piece miniature reinforcing pile |
| CN110700853A (en) * | 2019-10-31 | 2020-01-17 | 中铁十八局集团第三工程有限公司 | Shallow soil covering shield tunnel reinforcing method based on weak stratum |
| CN110985077A (en) * | 2019-11-22 | 2020-04-10 | 中铁十二局集团有限公司 | Method for preventing tunnel inverted arch from bulging by utilizing prestressed anchor cable |
| CN111428304A (en) * | 2020-03-31 | 2020-07-17 | 浙江大学城市学院 | Displacement deformation prediction method for shield tunnel with anti-floating anchor rod under excavation of foundation pit |
-
2018
- 2018-09-30 CN CN201821611903.3U patent/CN208793021U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593894A (en) * | 2019-09-16 | 2019-12-20 | 重庆大学 | Novel shield tunnel concrete pipe piece miniature reinforcing pile |
| CN110593894B (en) * | 2019-09-16 | 2020-12-25 | 重庆大学 | Novel shield tunnel concrete pipe piece miniature reinforcing pile |
| CN110700853A (en) * | 2019-10-31 | 2020-01-17 | 中铁十八局集团第三工程有限公司 | Shallow soil covering shield tunnel reinforcing method based on weak stratum |
| CN110985077A (en) * | 2019-11-22 | 2020-04-10 | 中铁十二局集团有限公司 | Method for preventing tunnel inverted arch from bulging by utilizing prestressed anchor cable |
| CN111428304A (en) * | 2020-03-31 | 2020-07-17 | 浙江大学城市学院 | Displacement deformation prediction method for shield tunnel with anti-floating anchor rod under excavation of foundation pit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208793021U (en) | A kind of shield tunnel anti-floating control structure | |
| CN103410161B (en) | Oblique control slip casting steel anchor tube framework and construction method thereof | |
| CN106065624B (en) | Suitable for passing through the permanent seal cooling prestress anchorage cable and its construction method of broken rock | |
| CN107605498B (en) | Construction method for horizontal grouting reinforcement structure of end head of shield tunnel in water-rich sandy pebble stratum | |
| CN204703160U (en) | Two anchoring section prestressed anchor Cable Structure | |
| CN201412163Y (en) | Circular tunnel lining structure for construction of open-type tunnel boring machine | |
| CN105350988B (en) | Tunnel Base reinforcement means | |
| CN105351001B (en) | A kind of method based on gob side entry retaining region reinforcement gas pumping | |
| CN203248178U (en) | Downward-hole self-drilling grouting anchor rod | |
| CN201407053Y (en) | Support and waterproof structure for metro tunnel of tunnel boring machine construction | |
| CN108915691B (en) | Waterproof impervious concrete single-layer lining construction method in water-containing bedrock environment | |
| CN108589723A (en) | Band only starches the segmentation hollow grouting anchor of the segmenting slip casting of branch sleeve | |
| CN102720196A (en) | Anticorrosive anchor rod capable of preventing slurry from leaking | |
| CN108547291A (en) | A kind of herring-bone form basalt fibre anchor system and its anchoring process | |
| CN101975074B (en) | Soft rock roadway anchored concrete filled steel tube anti-floor heave device and construction method thereof | |
| CN108678790A (en) | A kind of frictional drainage anchor rod of fibrous material | |
| CN208633857U (en) | A kind of frictional drainage anchor rod of fibrous material | |
| CN108979690A (en) | A kind of shield tunnel anti-floating control structure and application method | |
| CN205444232U (en) | Stock - gravity type infiltration retaining wall | |
| CN204877514U (en) | Modular cavity slip casting stock | |
| CN103410145B (en) | Disposable anchor cable bit and construction method thereof | |
| CN201296932Y (en) | Segmentation prefabricating sunken outer wall and guide wall thereof | |
| CN204982874U (en) | Anchor rope construction system of dismouting many times | |
| CN208933959U (en) | Repeatedly control slip casting pre-stressed steel anchor pipe anchor cable composite structure | |
| CN208701667U (en) | Band only starches the segmentation hollow grouting anchor of the segmenting slip casting of connection sleeve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |