CN109184741A - A kind of high-bearing capacity shield tunnel segment joint structure - Google Patents
A kind of high-bearing capacity shield tunnel segment joint structure Download PDFInfo
- Publication number
- CN109184741A CN109184741A CN201811272798.XA CN201811272798A CN109184741A CN 109184741 A CN109184741 A CN 109184741A CN 201811272798 A CN201811272798 A CN 201811272798A CN 109184741 A CN109184741 A CN 109184741A
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- CN
- China
- Prior art keywords
- section
- jurisdiction
- fitting
- concrete
- cast iron
- 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.)
- Granted
Links
- 239000004567 concrete Substances 0.000 claims abstract description 50
- 239000000835 fiber Substances 0.000 claims abstract description 46
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 22
- 239000010959 steel Substances 0.000 claims abstract description 22
- 239000004743 Polypropylene Substances 0.000 claims abstract description 10
- 229920001155 polypropylene Polymers 0.000 claims abstract description 10
- -1 polypropylene Polymers 0.000 claims abstract description 8
- 230000002787 reinforcement Effects 0.000 claims description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- 238000010276 construction Methods 0.000 claims description 14
- 238000005266 casting Methods 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 238000010008 shearing Methods 0.000 claims description 9
- 210000003205 muscle Anatomy 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000010534 mechanism of action Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 206010023230 Joint stiffness Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011210 fiber-reinforced concrete Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
- E21D11/083—Methods or devices for joining adjacent concrete segments
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a kind of high-bearing capacity shield tunnel segment joint structures, including concrete, and it is embedded in the cast iron built-in fitting in concrete, it is characterized in that being contaminated with steel fibre and polypropylene fibre in hybrid fiber concrete being hybrid fiber concrete away from the concrete in the certain distance of section of jurisdiction end；Prepared screw-bolt hole on cast iron built-in fitting penetrates bolt from prepared screw-bolt hole on cast iron built-in fitting, realizes and connects between the adjacent section of jurisdiction of two panels.By taking this joint geometry, the integral strength and rigidity of tunnel connector can be improved, resisting unfavorable large eccentric pressuring load suffered by hydraulic pressure tunnel in Rectangular Tunnel or height influences.
Description
Technical field
The present invention relates to a kind of high-bearing capacity shield tunnel segment joint structures, are specifically directed to rectangular shield tunnel
Or there is jointing structure between the section of jurisdiction block of interior hydraulic pressure shield tunnel.Such joint structure can effectively improve tunnel connector
Integral strength and rigidity reduce cracking risk of the connector under load action, resist rectangular shield tunnel or have interior hydraulic pressure tunnel
The large eccentricity load that bring connector is subject to.
Background technique
Currently, with national economy level promoted, for save urban underground space occupy and reduce underground space development at
This, rectangular shield is widely applied in High-Density Urban Area.Rectangular shield method tunnel is because structure transverse face is close to rectangular frame
Stress, the moment of flexure that contact cross-section is subject to is big and axle power is small, and the unfavorable force modes of large eccentric pressuring are presented.In addition, being filled by assembly
Standby carrying power limit, than relatively limited, the section bearing capacity that connector can be improved is restricted the selection of section of jurisdiction thickness.According to domestic and international reality
The problem of trampling experience, connector stress can solve using compound section of jurisdiction, but the cost of compound section of jurisdiction reaches general armored concrete
The 2 times or more of section of jurisdiction, cost is very high, is not suitable for the construction of long distance tunnel.
On the other hand, during optimizing water source supply and promoting sponge city, water delivery, the storage of China's shield construction
Water, outlet tunnel are more and more, because internal water pressure offset circular tunnel suffered by axle power, connector also present large eccentric pressuring it is unfavorable by
Force mode.Traditional shield tunnel connector, based on use armored concrete prefabricated pipe section, with straight bolt or oblique bolt butt joint
The method being directly attached is not particularly suited for the tunnel connector of interior influence of hydraulic pressure.To reduce interior hydraulic pressure to the shadow of tunnel structure
It rings, also frequently with the double-deck lining cutting, but the construction period is long and at high cost.
Fibre reinforced concrete has been widely used in the constructions of structures such as civil buildings, bridge, road, have crude fibre and
Fine fibre two major classes.Wherein using steel fibre as the coarse-fibred mechanism of action of representative are as follows: in tensile load or the work of bending load
Under, after crack occurs in concrete, fiber and concrete shared external force, making concrete still has certain carrying and deformation
Ability absorbs more energy, thus is remarkably improved the toughness of concrete, and correspondingly improve the impact resistance of concrete with
Fatigue resistance.It is by the fine fibre mechanism of action of representative of polypropylene (PP) fiber: on the one hand reduces and inhibit concrete bone
Plastic settlement cracks caused by material sedimentation isolates, on the other hand reduce and plastic shrinkage caused by concrete dehydration shrinkage are inhibited to split
Seam.Joint stiffness and bearing capacity can be effectively improved in conjunction with the strengthening measure of adapter plate using the fiber concrete of suitable volume.
From the angle for improving duct piece connector stress performance in the present invention, connect based on the shield tunnel by large eccentric pressuring
The loading characteristic of head, proposes such high-bearing capacity shield tunnel segment joint that can be used for single shell lining.
Summary of the invention
The purpose of the present invention is to provide a kind of high-bearing capacity shield tunnel segment joint structures, and connector concrete is using mixed
Miscellaneous fiber concrete (steel fibre+polypropylene fiber concrete) is bolted position using ironcasting adapter plate, and guarantee can be square
Just, quickly reinforced concrete segment connect between block, to obtain overall stiffness and intensity is enough, durability is preferable
Shield tunnel ring.
To achieve the goals above, technical scheme is as follows: a kind of high-bearing capacity shield tunnel segment joint knot
Structure, including concrete, and the cast iron built-in fitting being embedded in concrete, it is characterised in that in away from section of jurisdiction end certain distance
Concrete be hybrid fiber concrete, be contaminated with steel fibre and polypropylene fibre in hybrid fiber concrete；Cast iron built-in fitting
Upper prepared screw-bolt hole penetrates bolt from prepared screw-bolt hole on cast iron built-in fitting, realizes and connects between the adjacent section of jurisdiction of two panels.
Further, the volume volume of steel fibre is 1 ~ 2% in hybrid fiber concrete, the volume volume of polypropylene fibre
It is 0.8 ~ 1.2%.
Further, hybrid fiber concrete is poured with region of the section of jurisdiction threshold value in hand hole width double-wide.
Further, the joint structure, which is arranged side by side, two block casting iron built-in fittings, sets side by side in each cast iron built-in fitting
There are two bolts hole.
Further, the joint structure lower part, which is arranged side by side, two block casting iron built-in fittings, and the two sides of contact cross-section are in
Portion is provided with shearing resistance stirrup, and the contact cross-section top is provided with construction muscle, is disposed with main reinforcement perpendicular to contact cross-section, described
Corner reinforcing bar is provided at four angles of contact cross-section, the shearing resistance stirrup, construction muscle, main reinforcement, cableway, corner reinforcing bar are total
With constituting steel reinforcement cage, the upper outside of every block casting iron built-in fitting is equipped with multiple anchor supports, each anchor support by with
The vertically disposed pre-buried support dowel of contact cross-section is connect with steel reinforcement cage.
Further, a kind of construction method of high-bearing capacity shield tunnel segment joint structure, it is characterised in that described to apply
Work method includes:
Steel reinforcement cage is hung within the component process segment, section of jurisdiction template, and then cast iron built-in fitting is anchored near the hand hole of section of jurisdiction, institute
It states and is provided with bolt hole on cast iron built-in fitting, cast iron built-in fitting is integrally connected with steel reinforcement cage by pre-buried support dowel；
The stage is poured in section of jurisdiction, in section of jurisdiction end, hybrid fiber concrete is used in hand hole width double-wide；
In the manufacturing process of section of jurisdiction, it is bolted between two adjacent sections of jurisdiction.
The present invention uses hybrid fiber concrete in hand hole width double-wide, reduces section of jurisdiction and is pouring initial stage generation
Crack simultaneously increases section of jurisdiction in the bearing capacity and rigidity of operation phase.Using two block casting iron built-in fittings, each cast iron built-in fitting is used
Two bolts, to resist the section pulling force of large eccentric pressuring generation.By taking this joint geometry, tunnel connector can be improved
Integral strength and rigidity, resisting in Rectangular Tunnel or height unfavorable large eccentric pressuring load suffered by hydraulic pressure tunnel influences.
Detailed description of the invention
Fig. 1 is connector connecting structure figure.
Fig. 2 is contact cross-section bar arrangement drawing.
Fig. 3 is connector built-in fitting.
Fig. 4 is position (anchor ring) of the connector in section of jurisdiction.
Fig. 5 is position (intrados) of the connector in section of jurisdiction.
It include: hybrid fiber concrete 1, cast iron built-in fitting 2, shearing resistance stirrup 3, construction muscle 4, main reinforcement 5, cableway in figure
6, corner reinforcing bar 7, pre-buried support dowel 8, bolt hole 9, normal concrete 10, connection hand hole 11.
Specific embodiment
The invention will be further described with reference to the accompanying drawing.
As shown in Figure 1, a kind of high-bearing capacity shield tunnel segment joint structure, including concrete, and it is embedded in coagulation
Cast iron built-in fitting 2 in soil, it is characterised in that it is being hybrid fiber concrete 1 away from the concrete in the certain distance of section of jurisdiction end,
Steel fibre and polypropylene fibre are contaminated in hybrid fiber concrete；Prepared screw-bolt hole on cast iron built-in fitting, from cast iron built-in fitting 2
Bolt is penetrated at upper prepared screw-bolt hole, is realized and is connected between the adjacent section of jurisdiction of two panels.
According to concrete conditions such as the buried depth in tunnel, diameter (span), water level and external loads, in connector hand hole double-width model
Interior use hybrid fiber concrete (+1% polypropylene fiber concrete of 1.5% steel fibre of volume volume) is enclosed, from cast iron built-in fitting
It is penetrated at prepared screw-bolt hole and is bolted (in Fig. 1, a is connection hand hole width).
As described in Figure 2, contact cross-section solves answering for connector and section of jurisdiction in such a way that main reinforcement combines arrangement of reinforcement with distributing bar
Miscellaneous force modes.As shown, the joint structure lower part, which is arranged side by side, two block casting iron built-in fittings 2, the two sides of contact cross-section
It is provided with shearing resistance stirrup 3 with middle part, cast iron built-in fitting 2 is located between middle part shearing resistance stirrup and two sides shearing resistance stirrup, described to connect
Head section top is provided with construction muscle 4, is disposed with main reinforcement 5 and cableway 6 perpendicular to contact cross-section, and the four of the contact cross-section
Corner reinforcing bar 7 is provided at a angle, the shearing resistance stirrup 3, construction muscle 4, main reinforcement 5, cableway 6, corner reinforcing bar 7 collectively form
Steel reinforcement cage, the upper outside of every block casting iron built-in fitting are equipped with 5 anchor supports, each anchor support by with contact cross-section
Vertically disposed pre-buried support dowel 8 is connect with steel reinforcement cage.
As shown in figure 3, cast iron built-in fitting uses two bolts hole, assembling duration is saved.Each joint structure is arranged side by side
Two block casting iron built-in fittings, each cast iron built-in fitting are arranged two bolts hole, use four be arranged side by side between two adjacent sections of jurisdiction
Root is bolted, to resist the section pulling force of large eccentric pressuring generation.The locating height of bolt is according to section least favorable stress
It determines.
As described in Fig. 4 and Fig. 5, section of jurisdiction is in casting process according to hybrid fiber concrete and the respective portion of normal concrete
Subregion carries out subregion and pours, and improves the service efficiency of fiber, reduces the cost of manufacture of section of jurisdiction.H is the locating height of bolt in figure,
A is connection hand hole width.
Difference with the prior art point of the present invention is: pouring the stage in section of jurisdiction, uses in hand hole width double-wide mixed
Miscellaneous fiber concrete reduces section of jurisdiction and is pouring the crack of initial stage generation and increasing section of jurisdiction in the bearing capacity and rigidity of operation phase.
Under large eccentric pressuring state, the stress raisers of generation are generated mixed for joint area, pre-buried ironcasting and normal concrete
The available solution of solidifying soil problem of Cracking.Section of jurisdiction is respective with normal concrete according to hybrid fiber concrete in casting process
Partial region carries out subregion and pours, and improves the service efficiency of fiber, reduces the cost of manufacture of section of jurisdiction.The ring assembly stage in section of jurisdiction,
Bolt can be pierced into embedded part bolt hole by equipment and nut is tightened into completion assembly again.In the component process segment, in section of jurisdiction mould
Steel reinforcement cage is hung in plate, then built-in fitting is anchored near the hand hole of section of jurisdiction, and built-in fitting and steel reinforcement cage is made to form one.
Claims (6)
1. a kind of high-bearing capacity shield tunnel segment joint structure, including concrete, and the cast iron being embedded in concrete are pre-
Embedded part, it is characterised in that be hybrid fiber concrete, hybrid fiber concrete away from the concrete in the certain distance of section of jurisdiction end
Inside it is contaminated with steel fibre and polypropylene fibre；Prepared screw-bolt hole on cast iron built-in fitting, from prepared screw-bolt hole on cast iron built-in fitting
Bolt is penetrated, realizes and is connected between the adjacent section of jurisdiction of two panels.
2. high-bearing capacity shield tunnel segment joint structure as described in claim 1, which is characterized in that hybrid fiber concrete
The volume volume of middle steel fibre is 1 ~ 2%, and the volume volume of polypropylene fibre is 0.8 ~ 1.2%.
3. high-bearing capacity shield tunnel segment joint structure as described in claim 1, which is characterized in that with section of jurisdiction threshold value
Region in hand hole width double-wide pours hybrid fiber concrete.
4. high-bearing capacity shield tunnel segment joint structure as described in claim 1, which is characterized in that the joint structure is simultaneously
Row is provided with two block casting iron built-in fittings, is set side by side in each cast iron built-in fitting there are two bolt hole.
5. high-bearing capacity shield tunnel segment joint structure as described in claim 1, which is characterized in that under the joint structure
Portion, which is arranged side by side, two block casting iron built-in fittings, and the two sides and middle part of contact cross-section are provided with shearing resistance stirrup, the contact cross-section
Top is provided with construction muscle, is disposed with main reinforcement perpendicular to contact cross-section, is provided with corner steel at four angles of the contact cross-section
Muscle, the shearing resistance stirrup, construction muscle, main reinforcement, cableway, corner reinforcing bar together constitute steel reinforcement cage, every block casting iron built-in fitting
Upper outside be equipped with multiple anchor supports, each anchor support by with the vertically disposed pre-buried support dowel of contact cross-section
It is connect with steel reinforcement cage.
6. the construction method of high-bearing capacity shield tunnel segment joint structure as described in claim 1, it is characterised in that described
Construction method includes:
Steel reinforcement cage is hung within the component process segment, section of jurisdiction template, and then cast iron built-in fitting is anchored near the hand hole of section of jurisdiction, institute
It states and is provided with bolt hole on cast iron built-in fitting, cast iron built-in fitting is integrally connected with steel reinforcement cage by pre-buried support dowel；
The stage is poured in section of jurisdiction, in section of jurisdiction end, hybrid fiber concrete is used in hand hole width double-wide；
In the manufacturing process of section of jurisdiction, it is bolted between two adjacent sections of jurisdiction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811272798.XA CN109184741B (en) | 2018-10-30 | 2018-10-30 | High bearing capacity shield tunnel section of jurisdiction joint structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811272798.XA CN109184741B (en) | 2018-10-30 | 2018-10-30 | High bearing capacity shield tunnel section of jurisdiction joint structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109184741A true CN109184741A (en) | 2019-01-11 |
| CN109184741B CN109184741B (en) | 2024-06-14 |
Family
ID=64944408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811272798.XA Active CN109184741B (en) | 2018-10-30 | 2018-10-30 | High bearing capacity shield tunnel section of jurisdiction joint structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109184741B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814286A (en) * | 2021-01-06 | 2021-05-18 | 江苏科技大学 | Reinforcing steel bar surface type connecting joint adopting nodular cast iron component |
| CN113334568A (en) * | 2021-06-07 | 2021-09-03 | 中铁工程装备集团有限公司 | Segment whole-ring structure and segment whole-ring prefabricating method |
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| JPH1018785A (en) * | 1996-06-28 | 1998-01-20 | Kajima Corp | Joint structure for segment |
| JP2005273388A (en) * | 2004-03-26 | 2005-10-06 | Kanazawa Inst Of Technology | Concrete segment |
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| CN103790598A (en) * | 2014-02-12 | 2014-05-14 | 同济大学 | Method for manufacturing shield tunnel longitudinal prestressing concrete lining segment |
| CN105041336A (en) * | 2015-07-06 | 2015-11-11 | 中国建筑股份有限公司 | Ultra-high performance hybrid fiber concrete shield segment and preparation method thereof |
| CN106495621A (en) * | 2016-09-22 | 2017-03-15 | 黄贺明 | A kind of inorganic high-performance duct pieces of shield tunnel |
| CN106968688A (en) * | 2017-04-05 | 2017-07-21 | 宁波大学 | A kind of shield tunnel is combined tunnel segment structure and shield tunnel liner |
| CN107246272A (en) * | 2017-07-23 | 2017-10-13 | 山东斯福特实业有限公司 | A kind of shield tunnel liner glass fiber-reinforced polymer concrete pipe sheet and preparation method |
| CN207278272U (en) * | 2017-09-12 | 2018-04-27 | 山东科技大学 | It is a kind of using arc channel steel and the tunnel duct piece connector of carbon cloth composite consolidation |
| CN209244580U (en) * | 2018-10-30 | 2019-08-13 | 上海市政工程设计研究总院（集团）有限公司 | A kind of high-bearing capacity shield tunnel segment joint structure |
-
2018
- 2018-10-30 CN CN201811272798.XA patent/CN109184741B/en active Active
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| JP2005273388A (en) * | 2004-03-26 | 2005-10-06 | Kanazawa Inst Of Technology | Concrete segment |
| CN200952394Y (en) * | 2006-09-22 | 2007-09-26 | 同济大学 | Anticracking composite shield tunnel gilled tube |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814286A (en) * | 2021-01-06 | 2021-05-18 | 江苏科技大学 | Reinforcing steel bar surface type connecting joint adopting nodular cast iron component |
| CN113334568A (en) * | 2021-06-07 | 2021-09-03 | 中铁工程装备集团有限公司 | Segment whole-ring structure and segment whole-ring prefabricating method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109184741B (en) | 2024-06-14 |
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