CN107060787A - A kind of reinforcement means of duct pieces of shield tunnel - Google Patents
A kind of reinforcement means of duct pieces of shield tunnel Download PDFInfo
- Publication number
- CN107060787A CN107060787A CN201710465924.2A CN201710465924A CN107060787A CN 107060787 A CN107060787 A CN 107060787A CN 201710465924 A CN201710465924 A CN 201710465924A CN 107060787 A CN107060787 A CN 107060787A
- Authority
- CN
- China
- Prior art keywords
- shield tunnel
- duct pieces
- reinforcement means
- reinforcement
- tunnel according
- 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.)
- Pending
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0607—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. shuttering
Abstract
The present invention relates to a kind of construction method, more particularly to a kind of reinforcement means of duct pieces of shield tunnel, this method comprises the following steps：A. poor dabbing processing is carved；B. bar-mat reinforcement is applied；C. clear up；D. installation form and humidify；E. casting concrete；F. conserve.The method construction is fast, cost is low, can guarantee that ruggedized construction and section of jurisdiction compatible deformation, and performance is stable, shield tunnel can be solved in progradation and during operation due to closing on the problem of being reinforced after construction occurrence of large-area fragmentation, it is ensured that tunnel meets operation security requirement.
Description
Technical field
The present invention relates to a kind of construction method, more particularly to a kind of reinforcement means of duct pieces of shield tunnel.
Background technology
Repairing and reinforcing is carried out to damaged tunnel segment structure in tunnel internal at present, for different segment damage situations, generally adopted
Use two methods：First method is that the fibre sheet materials such as soft texture, the aramid fabric for being only capable of bearing pulling force are pasted on into impaired shield
In the tensile zone of structure tunnel duct piece, the tensile property at section of jurisdiction and seaming position is improved whereby, but this method can not be significantly
Degree improves the rigidity of structure, and consolidation effect is influenceed by tunnel deformation degree, i.e., tunnel deformation is smaller, and consolidation effect is just better.
Second method is then to be reinforced to being damaged duct pieces of shield tunnel using the method for interior steel plate, with the entirety of riser loop
Load-carrying properties, though the rigidity of structure can be increased substantially, but face conduct oneself with dignity excessive, construction complexity, the problems such as reinforcement cost is high
The content of the invention
It is an object of the invention to provide a kind of reinforcement means of duct pieces of shield tunnel, tunnel reinforcement construction is solved multiple
It is miscellaneous, the problem of cost is high.
The present invention is achieved in that a kind of reinforcement means of duct pieces of shield tunnel, and this method comprises the following steps：
A. grain processing is carved；
B. reinforced mesh is applied；
C. clear up；
D. humidify；
E. gunite concrete.
The present invention further technical scheme be：The step A is：The section of jurisdiction inwall that section is reinforced to shield tunnel is carried out
The processing of cutting dabbing, cuts concrete cover to tunnel segment structure key area, duct pieces of shield tunnel is exposed steel bar stress.
The present invention further technical scheme be：The step B is：Bar-mat reinforcement is set on duct pieces of shield tunnel, and with
The steel bar stress exposed is welded as a whole.
The present invention further technical scheme be：The step C is：Scum silica frost is cleared up, holding structure clean surface is dustless.
The present invention further technical scheme be：The step D is：Installation form, fills template and section of jurisdiction by watering
Divide moistening, reprocessing remains in the ponding on surface, reaches saturated dry surface.
State.
The present invention further technical scheme be：In the step E：The concrete is ultra-high performance concrete.
The present invention further technical scheme be：The step F is：Form removal (5) after maintenance.
The beneficial effects of the invention are as follows：Method construction is fast, and cost is low, be able to can be solved with section of jurisdiction compatible deformation, performance stabilization
Shield tunnel in progradation and operation during due to close on construction occurrence of large-area fragmentation after reinforced the problem of, really
Protect tunnel and meet operation security requirement.
Brief description of the drawings
Fig. 1 is a kind of reinforcement means schematic diagram for duct pieces of shield tunnel that the present invention is provided；
Fig. 2 is the model sheetinstallat schematic diagram for the duct pieces of shield tunnel for having railway roadbed；
Fig. 3 is the model sheetinstallat schematic diagram of the duct pieces of shield tunnel of no railway roadbed.
Reference：1st, section of jurisdiction 2, ultra-high performance concrete 3, steel bar stress 4, bar-mat reinforcement 5, template 6, injected hole
7th, steam vent 8, spilled water hole 9, cavity.
Embodiment
Embodiment one：In the case that large deformation occurs based on duct pieces of shield tunnel for the present invention, through waterproofing and leakage-stopping, with reference to ground
Slip casting in layer, premised on the stabilization for ensureing shield tunnel and surrounding formation, after being repaired to segment damage fracture area
Implement.
A kind of method of cast-in-place ultra-high performance concrete (UHPC) reinforcing shield tunnel duct piece, passes through cast-in-place superelevation coagulation
Native (UHPC) applies high performance concrete (UHPC) back-up coat 2, using ultra-high performance concrete (UHPC) itself adhesive property, with
Tunnel duct piece 1 is collectively forming carrying system；Ultra-high performance concrete (UHPC) back-up coat 2 is by ultra-high performance concrete (UHPC) 1
Formed with bar-mat reinforcement 4 in template 5 through pouring maintenance；Bar-mat reinforcement 4 is welded with original structure principal rod 3 when applying bar-mat reinforcement 4.
The inwall of section of jurisdiction 1 that section is first reinforced to shield tunnel carries out cutting dabbing processing, and tunnel segment structure key area is dug
Except concrete cover, original structure is set to expose steel bar stress 3；Bar-mat reinforcement 4 is applied again, and bar-mat reinforcement 4 is carried out with structure stress muscle 3
Welding, and scum silica frost is cleared up, holding structure clean surface is dustless；Installation form 5 is simultaneously blocked, and forms closed cavity 9, and template 5 is selected
Steel plate thick 3-5mm, the net thickness 50-100mm of closed cavity 9；By the water filling into cavity 9 of injected hole 6, it is vented with reference to steam vent 7
Make to be full of water in cavity 9, soak section of jurisdiction internal-wall concrete；Section of jurisdiction inwall was soaked in water after 2-3 days, by the draining of spilled water hole 8, and
The ponding remained in cavity 9 is handled, section of jurisdiction inwall is reached saturated dry surface；By injected hole 6 to it is lower and go up, left and right hand over
For the symmetrical perfusion ultra-high performance concrete (UHPC) out of two lateral cavities 9, until filling whole cavity；Mould is removed after maintenance
Plate 5.
Compared with prior art, the advantage of the invention is that：
(1) in terms of structure stress, the strength and stiffness of section of jurisdiction can not only be improved, segment deformation is controlled and further breaks
It is bad, and good toughness can be kept, with section of jurisdiction compatible deformation；
(2) from the aspect of structure durability, ultra-high performance concrete (UHPC) belongs to inorganic material, solves existing reinforcing
The problem of aging for the interface agglutination agent that method is used, it is ensured that interface cementing strength and durability；
(3) from structure secure context, compared to affixing steel plate reinforcement section of jurisdiction method, reinforcing body is strong operation stage in later stage
Health state is more prone to observe and controlled；
(4) in terms of construction and economic benefit, the whole work progress technique of method system of the present invention is simple,
It is time-consuming short, it is small to subway Influence to operation, with very high social effect and economic benefits.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (7)
1. a kind of reinforcement means of duct pieces of shield tunnel, it is characterised in that this method comprises the following steps：
A. poor dabbing processing is carved；
B. bar-mat reinforcement is applied；
C. clear up；
D. installation form and humidify；
E. casting concrete；
F. conserve.
2. a kind of reinforcement means of duct pieces of shield tunnel according to claim 1, it is characterised in that the step A is：It is right
Section of jurisdiction (1) inwall that shield tunnel reinforces section carries out cutting dabbing processing, and concrete guarantor is cut to tunnel segment structure key area
Sheath, makes duct pieces of shield tunnel expose steel bar stress (3).
3. a kind of reinforcement means of duct pieces of shield tunnel according to claim 2, it is characterised in that the step B is：
Bar-mat reinforcement (4) is set on duct pieces of shield tunnel (1), and is welded as a whole with the steel bar stress (3) that exposes.
4. a kind of reinforcement means of duct pieces of shield tunnel according to claim 1, it is characterised in that the step C is：Clearly
Scum silica frost is managed, holding structure clean surface is dustless.
5. a kind of reinforcement means of duct pieces of shield tunnel according to claim 1, it is characterised in that the step D is：Peace
Decking (5), is sufficiently humidified so as to template (5) and section of jurisdiction (1) by watering, and reprocessing remains in the ponding on surface, reaches saturation
Surface dry condition.
6. the reinforcement means of a kind of duct pieces of shield tunnel according to claim 1, it is characterised in that in the step E：Institute
Concrete is stated for ultra-high performance concrete.
7. a kind of reinforcement means of duct pieces of shield tunnel according to claim 1, it is characterised in that the step F is：Through
Form removal (5) after maintenance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710465924.2A CN107060787A (en) | 2017-06-19 | 2017-06-19 | A kind of reinforcement means of duct pieces of shield tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710465924.2A CN107060787A (en) | 2017-06-19 | 2017-06-19 | A kind of reinforcement means of duct pieces of shield tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107060787A true CN107060787A (en) | 2017-08-18 |
Family
ID=59594594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710465924.2A Pending CN107060787A (en) | 2017-06-19 | 2017-06-19 | A kind of reinforcement means of duct pieces of shield tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107060787A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296383A (en) * | 2018-10-09 | 2019-02-01 | 中建隧道建设有限公司 | Reinforcement means is maintained after dehydration outside a kind of tunnel duct piece |
| CN110295924A (en) * | 2019-05-24 | 2019-10-01 | 同济大学 | A kind of shield tunnel ruggedized construction and construction method based on I-shaped steel plate |
| CN111911190A (en) * | 2020-09-11 | 2020-11-10 | 何峰 | Improved construction method for caulking shield tunnel segment |
| CN116792149A (en) * | 2023-08-16 | 2023-09-22 | 湖南大学 | Method and system for recovering deformation of shield tunnel structure |
| CN116792149B (en) * | 2023-08-16 | 2024-05-14 | 湖南大学 | Method and system for recovering deformation of shield tunnel structure |
Citations (5)
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|---|---|---|---|---|
| JP2003227296A (en) * | 2002-02-05 | 2003-08-15 | Nippon Concrete Ind Co Ltd | Tunnel repairing construction method and tunnel repairing plate |
| WO2004035962A1 (en) * | 2002-10-16 | 2004-04-29 | Tekken Construction Co., Ltd. | Concrete structure repairing and reinforcing method |
| CN103643965A (en) * | 2013-12-16 | 2014-03-19 | 上海市基础工程集团有限公司 | Repair and reinforcement construction methods for segments in formed tunnel |
| CN104652294A (en) * | 2015-02-03 | 2015-05-27 | 湖南大学 | New technology for reinforcing box girder through adhesion of UHPC (Ultra High Performance Concrete) and steel plate |
| JP2016037793A (en) * | 2014-08-08 | 2016-03-22 | 株式会社大林組 | Repair and reinforcement method for existing tunnel |
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2017
- 2017-06-19 CN CN201710465924.2A patent/CN107060787A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003227296A (en) * | 2002-02-05 | 2003-08-15 | Nippon Concrete Ind Co Ltd | Tunnel repairing construction method and tunnel repairing plate |
| WO2004035962A1 (en) * | 2002-10-16 | 2004-04-29 | Tekken Construction Co., Ltd. | Concrete structure repairing and reinforcing method |
| CN103643965A (en) * | 2013-12-16 | 2014-03-19 | 上海市基础工程集团有限公司 | Repair and reinforcement construction methods for segments in formed tunnel |
| JP2016037793A (en) * | 2014-08-08 | 2016-03-22 | 株式会社大林組 | Repair and reinforcement method for existing tunnel |
| CN104652294A (en) * | 2015-02-03 | 2015-05-27 | 湖南大学 | New technology for reinforcing box girder through adhesion of UHPC (Ultra High Performance Concrete) and steel plate |
Non-Patent Citations (1)
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| 刘铮: "《建筑结构设计误区与禁忌实例》", 31 July 2015 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296383A (en) * | 2018-10-09 | 2019-02-01 | 中建隧道建设有限公司 | Reinforcement means is maintained after dehydration outside a kind of tunnel duct piece |
| CN110295924A (en) * | 2019-05-24 | 2019-10-01 | 同济大学 | A kind of shield tunnel ruggedized construction and construction method based on I-shaped steel plate |
| CN110295924B (en) * | 2019-05-24 | 2023-09-26 | 同济大学 | Shield tunnel reinforcing structure based on H-shaped steel plate and construction method |
| CN111911190A (en) * | 2020-09-11 | 2020-11-10 | 何峰 | Improved construction method for caulking shield tunnel segment |
| CN111911190B (en) * | 2020-09-11 | 2022-04-26 | 何峰 | Improved construction method for caulking shield tunnel segment |
| CN116792149A (en) * | 2023-08-16 | 2023-09-22 | 湖南大学 | Method and system for recovering deformation of shield tunnel structure |
| CN116792149B (en) * | 2023-08-16 | 2024-05-14 | 湖南大学 | Method and system for recovering deformation of shield tunnel structure |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170818 |
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| RJ01 | Rejection of invention patent application after publication |