CN207568626U - A kind of tunnel structure for expansive stratum - Google Patents
A kind of tunnel structure for expansive stratum Download PDFInfo
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- CN207568626U CN207568626U CN201721087943.8U CN201721087943U CN207568626U CN 207568626 U CN207568626 U CN 207568626U CN 201721087943 U CN201721087943 U CN 201721087943U CN 207568626 U CN207568626 U CN 207568626U
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- inverted arch
- tunnel
- tunnel structure
- arch
- reinforced concrete
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Abstract
The utility model is related to a kind of tunnel structures for expansive stratum, and including the preliminary bracing of steelframe gunite concrete, reinforced concrete arch wall lining is built, inverted arch and inverted arch are filled；Reinforcing bar grid truss is provided in inverted arch filling above the inverted arch；Center sewer is provided with below the inverted arch.The utility model has adjusted tunnel structure, increases tunnel inverted arch curvature, cancels Central drain in inverted arch filling and adds reinforcing bar grid truss, improves the load-carrying properties of underlying structure；There is provided lateral sulcus and center sewer, can discharge DRIFT AND SEPARATION-PILE and the following underground water of substrate, can effectively reduce the dilatancy on stratum and its harm to tunnel lining structure.
Description
Technical field
The utility model belongs to traffic engineering technical field, and in particular to a kind of tunnel structure for expansive stratum.
Background technology
Double track tunnel structure rail level above approximately is circle, and inverted arch structure is more flat, and bearing capacity is poor compared with arch, and is passed
The waterproof and water drainage system of system is mainly made of splash guard+non-woven fabrics, circumferential blind pipe, longitudinal blind pipe, draining lateral sulcus, Central drain.Energy
It is enough that arch wall lining cutting behind underground water is introduced into tunnel lateral sulcus by blind pipe, and lateral sulcus is at a certain distance by pre-buried water pipe by side
Ditch is connected with Central drain, convenient for lateral sulcus water is introduced Central drain, finally by draining lateral sulcus and Central drain by lining cutting arch wall
Outside the underground water discharge hole of behind, but underground water often can not be successfully discharge below Tunnel Base.Positioned at the tunnel of expansive stratum,
If the long-term ponding of Tunnel Base, expansive stratum long period of soaking will expand deformation and generates huge expansive force in water,
Tunnel Base will be acted directly on, causes Tunnel Base deformation excessive, it is grand that inverted arch structure filling face is will appear under serious situation
Rise, cracking etc. diseases, the differential expansion of expansive stratum can also cause tunnel differential settlement etc., seriously affect train operation
Safety, later period maintenance difficulty are big, of high cost.Therefore, the liner structure of development of new is one in expansive stratum tunnel construction
A urgent problem.
Invention content
The purpose of this utility model is to provide a kind of tunnel structure for expansive stratum, for expansive stratum tunnel
In road, the dilatancy on stratum and its harm to tunnel lining structure can be effectively reduced.
Technical solution is used by the utility model：
A kind of tunnel structure for expansive stratum, it is characterised in that：
The tunnel structure includes the preliminary bracing of steelframe gunite concrete, reinforced concrete arch wall lining block, inverted arch and inverted arch
Filling；
Reinforcing bar grid truss is provided in inverted arch filling above the inverted arch；
Center sewer is provided with below the inverted arch.
The preliminary bracing of steelframe gunite concrete and reinforced concrete arch wall lining are provided with waterproof layer between building.
The inverted arch ratio of rise to span of inverted arch is 1/6~1/10.
Both sides set longitudinally through lateral sulcus in tunnel；Lateral sulcus is longitudinally spaced to be provided with drain hole；
Tunnel arch wall lining cutting behind underground water and railway roadbed area water are collected to lateral sulcus by drain hole and discharge outside hole.
For center sewer along tunnel longitudinally elongated setting, ditch body top surface is provided with prefabricated reinforced concrete cover board, in ditch body
And permeable layer is provided with above prefabricated reinforced concrete cover board, it is both provided with infiltration on ditch body and prefabricated reinforced concrete cover board
Hole.
The ditch body cross section of center sewer is in up big and down small trapezoidal.
Permeable layer is made of backfill graded broken stone.
The utility model has the following advantages：
The utility model provides a kind of tunnel structure for expansive stratum, by steelframe gunite concrete initial stage branch
Shield, reinforced concrete arch wall lining is built and inverted arch, inverted arch filling and reinforcing bar grid truss in inverted arch filling, below inverted arch structure
Waterproof layer between center sewer and arch wall preliminary bracing and arch wall secondary lining collectively constitutes, and mainly increases inverted arch song
Rate, the Central drain eliminated in inverted arch filling add reinforcing bar grid truss, improve the load-carrying properties of underlying structure；It optimizes
Tunnel drainage system increases lateral sulcus, and longitudinally through center sewer is added below inverted arch, forms two mutually independent rows
Water system, it is ensured that the underground water smooth discharge of energy under tunnel arch wall lining cutting behind underground water and inverted arch can effectively reduce stratum
Dilatancy and its harm to tunnel lining structure.
Description of the drawings
Fig. 1 is the utility model tunnel structure cross-sectional view；
Fig. 2 is the utility model center sewer structure transverse face figure.
In figure, 1-steelframe gunite concrete preliminary bracing, 2-reinforced concrete arch wall lining is built, and 3- inverted arch, 4-inverted arch is filled out
It fills, 5-reinforcing bar grid truss, 6-center sewer, 7-waterproof layer, 8-lateral sulcus, 9-drain hole, ground under 10-inverted arch structure
Lower water seepage direction signal.
Specific embodiment
The utility model is described in detail With reference to embodiment.
The utility model is related to a kind of tunnel structure for expansive stratum, including steelframe gunite concrete preliminary bracing
1st, reinforced concrete arch wall lining builds 2, inverted arch 3 and inverted arch filling 4.Steelframe gunite concrete preliminary bracing 1 and reinforced concrete arch
Wall lining is provided with waterproof layer 7 between building 2.
The utility model eliminates the Central drain set in inverted arch filling 4, and center sewer 6 is provided with below inverted arch 3.
For center sewer 6 along tunnel longitudinally elongated setting, ditch body top surface is provided with prefabricated reinforced concrete cover board, in ditch body and pre-manufactured steel
Permeable layer is provided with above reinforced concrete cover board, water seepage hole is both provided on ditch body and prefabricated reinforced concrete cover board.It oozes at center
The ditch body cross section of ditch 6 is in up big and down small trapezoidal.Permeable layer is made of backfill graded broken stone, and the following underground water of inverted arch structure is saturating
The permeable layer set in center sewer 6 is crossed finally to be collected to outside the discharge of center sewer 6 hole.
Reinforcing bar grid truss 5 is provided in the inverted arch filling 4 of 3 top of inverted arch, improves the globality of Tunnel Base structure
And stress performance.
The utility model increases inverted arch curvature, and the inverted arch ratio of rise to span of inverted arch 3 is 1/6~1/10, makes bottom structure more
Smoother, stress performance and resistance capacity to deformation substantially improve.
Tunnel structure optimizes tunnel drainage system, increases lateral sulcus 8, the longitudinally through setting in the both sides in tunnel of lateral sulcus 8；
Lateral sulcus 8 is longitudinally spaced to be provided with drain hole 9, and tunnel arch wall lining cutting behind underground water and railway roadbed area water are collected to by drain hole
Outside lateral sulcus discharge hole.
The utility model has adjusted tunnel structure, increases tunnel inverted arch curvature, and cancelling Central drain in inverted arch filling increases
If reinforcing bar grid truss improves the load-carrying properties of underlying structure；There is provided lateral sulcus and center sewer, can discharge tunnel perimeter
Stratum and the following underground water of substrate can effectively reduce the dilatancy on stratum and its harm to tunnel lining structure.
The content of the utility model is not limited to cited by embodiment, and those of ordinary skill in the art are new by reading this practicality
Type specification and to any equivalent transformation that technical solutions of the utility model are taken, be the claim institute of the utility model
Cover.
Claims (7)
1. a kind of tunnel structure for expansive stratum, it is characterised in that：
The tunnel structure includes steelframe gunite concrete preliminary bracing（1）, reinforced concrete arch wall lining build（2）, inverted arch（3）With
Inverted arch is filled（4）；
The inverted arch（3）The inverted arch filling of top（4）Inside it is provided with reinforcing bar grid truss（5）；
The inverted arch（3）Lower section is provided with center sewer（6）.
2. a kind of tunnel structure for expansive stratum according to claim 1, it is characterised in that：
Steelframe gunite concrete preliminary bracing（1）It is built with reinforced concrete arch wall lining（2）Between be provided with waterproof layer（7）.
3. a kind of tunnel structure for expansive stratum according to claim 1, it is characterised in that：
Inverted arch（3）Inverted arch ratio of rise to span be 1/6~1/10.
4. a kind of tunnel structure for expansive stratum according to claim 1, it is characterised in that：
Both sides set longitudinally through lateral sulcus in tunnel（8）；Lateral sulcus（8）It is longitudinally spaced to be provided with drain hole（9）；
Tunnel arch wall lining cutting behind underground water and railway roadbed area water pass through drain hole（9）It is collected to lateral sulcus（8）It discharges outside hole.
5. a kind of tunnel structure for expansive stratum according to claim 1, it is characterised in that：
Center sewer（6）Along tunnel longitudinally elongated setting, ditch body top surface is provided with prefabricated reinforced concrete cover board, in ditch body and
Permeable layer is provided with above prefabricated reinforced concrete cover board, water seepage hole is both provided on ditch body and prefabricated reinforced concrete cover board.
6. a kind of tunnel structure for expansive stratum according to claim 5, it is characterised in that：
Center sewer（6）Ditch body cross section in up big and down small trapezoidal.
7. a kind of tunnel structure for expansive stratum according to claim 5, it is characterised in that：
Permeable layer is made of backfill graded broken stone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721087943.8U CN207568626U (en) | 2017-08-29 | 2017-08-29 | A kind of tunnel structure for expansive stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721087943.8U CN207568626U (en) | 2017-08-29 | 2017-08-29 | A kind of tunnel structure for expansive stratum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207568626U true CN207568626U (en) | 2018-07-03 |
Family
ID=62698111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721087943.8U Active CN207568626U (en) | 2017-08-29 | 2017-08-29 | A kind of tunnel structure for expansive stratum |
Country Status (1)
| Country | Link |
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| CN (1) | CN207568626U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107401413A (en) * | 2017-08-29 | 2017-11-28 | 中铁第勘察设计院集团有限公司 | Tunnel structure for expansive stratum |
| CN109519198A (en) * | 2018-10-18 | 2019-03-26 | 中国人民解放军63926部队 | The interim inverted arch in grid cage tunnel and its installation method |
| CN111156030A (en) * | 2020-01-03 | 2020-05-15 | 山东大学 | Anti-bottom-bulging prefabricated assembled tunnel inverted arch structure, assembled tunnel and method |
-
2017
- 2017-08-29 CN CN201721087943.8U patent/CN207568626U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107401413A (en) * | 2017-08-29 | 2017-11-28 | 中铁第勘察设计院集团有限公司 | Tunnel structure for expansive stratum |
| CN109519198A (en) * | 2018-10-18 | 2019-03-26 | 中国人民解放军63926部队 | The interim inverted arch in grid cage tunnel and its installation method |
| CN111156030A (en) * | 2020-01-03 | 2020-05-15 | 山东大学 | Anti-bottom-bulging prefabricated assembled tunnel inverted arch structure, assembled tunnel and method |
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