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CN106761817A - Shield tunnel self-regulation fire prevention lining segment structure - Google Patents

Shield tunnel self-regulation fire prevention lining segment structure Download PDF

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Publication number
CN106761817A
CN106761817A CN201611067334.6A CN201611067334A CN106761817A CN 106761817 A CN106761817 A CN 106761817A CN 201611067334 A CN201611067334 A CN 201611067334A CN 106761817 A CN106761817 A CN 106761817A
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CN
China
Prior art keywords
shield tunnel
self
lining segment
fiber
regulation
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Granted
Application number
CN201611067334.6A
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Chinese (zh)
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CN106761817B (en
Inventor
闫治国
孟晗
朱合华
丁文其
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Tongji University
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Tongji University
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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04Lining with building materials
    • E21D11/08Lining with building materials with preformed concrete slabs
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/38Waterproofing; Heat insulating; Soundproofing; Electric insulating

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (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 provides a kind of shield tunnel self-regulation fire prevention lining segment structure, including shield tunnel lining segment and self-regulation Fireproof concrete layer, shield lining segment inner side and self-regulation Fireproof concrete lamellar spacing are fixed, the self-regulation Fireproof concrete layer is formed by phase-changing energy storage material plate and the interior outer layer fiber concrete layer laminating mixed with fiber, and the phase-changing energy storage material plate is adjacent with shield tunnel lining segment inner side.Compared with other shield tunnel lining segments; when there is fire in shield tunnel; the present invention can effectively control the programming rate of lining segment; prevent pipe-plate lining from causing the heavy damage of lining cutting because of intensification suddenly; effectively slow down temperature to be internally propagated further; protection shield tunnel lining segment agent structure, can be dismantled, replacement operation if necessary.

Description

Shield tunnel self-regulation fire prevention lining segment structure
Technical field
The present invention relates to a kind of shield tunnel lining segment structure, more particularly to a kind of shield tunnel self-regulation fire prevention lining Build tunnel segment structure.
Background technology
With the development and the progress of shield technique of urban rail transit in China, increasing city underground, across river He Hai tunnels etc. are all built using shield method.Shield tunnel have building expense it is high, design Years Of Service it is long, operation during tie up The features such as difficult, consequence of failure is serious is repaiied, therefore safety problem gets most of the attention.Fire is topmost during shield tunnel is runed One of disaster, is also the major Safety of social concerns.When shield tunnel fire has that temperature is high, programming rate fast, continues Between it is long the features such as.The peace that damage of the high temperature of fire to liner structure not only seriously reduces the bearing capacity of liner structure and use Quan Xing, or even lining cutting section thickness can be caused to reduce and in water and soil pressure due to the deterioration of the mechanical property of section of jurisdiction concrete, explosion The effect of power causes collapsing for shield tunnel.Tunnel Engineering fire attack is difficult, lose huge, is restriction its safe operation and life One key factor in life cycle.
For shield tunnel construction fire safety problem, the method for using both at home and abroad at present is mainly provided with extra concrete and protects Sheath and paste PLASTIC LAMINATED etc. in tunnel surface.Concrete cover by the use of additional concrete as sacrifice layer, to maintain tunnel The globality of road structure, prevents it from being damaged in tunnel, including increases protective layer thickness and increase structure cross-section dimensions;PLASTIC LAMINATED Mainly it is made up of light materials such as calcium silicates classes, effect is to separate tunnel lining structure with fire when tunnel occurs fire. Due to the particularity and complexity of shield tunnel local environment, the above method is main to show there are still some problem and shortage :Additional concrete cover cannot effectively control concrete structure to burst, and in raging fire, the vapor become with reference to water is not Can effectively distribute, when its pressure exceedes its intensity, explosion occurs in protective layer, and high temperature is exposed to again with stylish exposed concrete Among, so as to trigger further explosion;Though the extra PLASTIC LAMINATED installed will not burst, it cannot effectively suppress lining cutting Concrete in section of jurisdiction bursts because being rapidly heated, and is extremely difficult to the flameproof protection effect of design requirement.
The content of the invention
The shortcoming of prior art, prevents fires it is an object of the invention to provide a kind of self-regulation of shield tunnel in view of the above Lining segment structure, for solving in the prior art, in the case of tunnel fire residence, it is impossible to effectively cause shield tunnel liner pipe Piece concrete temperature amplitude of variation, speed are small, and lining segment can automatically adapt to the pace of change of temperature in tunnel, it is ensured that at it In less thermograde, prevent because programming rate is fast and caused by structure performance degradation problem.
In order to achieve the above objects and other related objects, the present invention provides a kind of shield tunnel self-regulation fire prevention lining segment Structure, including shield tunnel lining segment and self-regulation Fireproof concrete layer, shield tunnel lining segment inner side and self-regulation are anti- Fiery concrete layer gap is fixed, and the self-regulation Fireproof concrete layer is mixed by phase-changing energy storage material plate and the interior fiber mixed with fiber Solidifying soil layer laminating is formed, and the phase-changing energy storage material plate is adjacent with shield tunnel lining segment inner side.
Preferably, the phase-changing energy storage material plate is the piece being made up of one or more solid-solid type phase-changing energy storage materials Shape plate, described solid-solid type phase-changing energy storage material includes pentaerythrite, polyethylene, 2- dihydroxymethyls-propyl alcohol or neopentyl glycol.
Preferably, fiber is mixed for fiber is split in antiknock in the fiber concrete layer.
Preferably, the antiknock splits fiber for polypropylene fibre, vinal, polyacrylonitrile fibre, polyamide are fine One or more in dimension, aramid fiber, Orlon fiber, polyester fiber, nylon fiber, vinylon fiber, polyimide fiber Mixing.
Preferably, the volume volume that fiber is split in the antiknock is 0.5%~1%.
Preferably, the thickness of the self-regulation Fireproof concrete layer is the 10% of lining segment gross thickness to the maximum.
Preferably, it is solid by bolt-clearance between the shield tunnel lining segment and self-regulation Fireproof concrete layer It is fixed.
As described above, it is of the invention compared with existing shield tunnel fire proof construction, can effectively control the intensification of lining segment Speed, prevents inside lining concrete major injury and explosive spalling of the pipe-plate lining caused by heating up suddenly, and can be The longitudinal rigidity of shield tunnel, and replaceable are improved to a certain extent, and long-term economic is profitable, and is suitable for diversified forms shield The fire protection design of structure tunnel lining segment structure.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is enlarged drawings of the Fig. 1 at A.
Fig. 3 is enlarged drawings of the Fig. 2 at B.
Fig. 4 is that the present invention is installed and dismounting schematic diagram with shield main body lining segment.
Fig. 5 is the illustration intention that the present invention is applied to circular shield tunnel lining segment.
Fig. 6 is the illustration intention that the present invention is applied to rectangular shield tunnel lining segment.
Component label instructions
1 shield tunnel lining segment
2 self-regulation Fireproof concrete layers
21 gaps
22 phase-changing energy storage material plates
23 fiber concretes layer
Fiber is split in 231 antiknocks
232 concrete substrates
3 segment joints
4 section of jurisdiction connecting bolts
5 duct piece connector hand holes
6 ring steel bar stresses
7 radial force reinforcing bars
8 connecting bolts
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation Content disclosed by book understands other advantages of the invention and effect easily.
It should be clear that structure, ratio, size depicted in this specification institute accompanying drawing etc., are only used to coordinate specification to be taken off The content shown, so that those skilled in the art understands and reads, is not limited to enforceable qualifications of the invention, therefore Do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influenceing the present invention Under the effect that can be generated and the purpose to be reached, all should still fall in the model to be covered of disclosed technology contents In enclosing.Meanwhile, in this specification it is cited such as " on ", D score, "left", "right", the term of " centre " and " ", be also only It is easy to understanding for narration, and is not used to limit enforceable scope of the invention, its relativeness is altered or modified, without essence Under change technology contents, when being also considered as enforceable category of the invention.
As shown in Figures 1 to 4, the invention provides a kind of shield tunnel self-regulation fire prevention lining segment structure, including shield Structure tunnel lining segment layer 1 and self-regulation Fireproof concrete layer 2.Pass through duct piece connector hand hole 5 between shield tunnel lining segment It is connected with section of jurisdiction connecting bolt 4, and segment joint 3 can be formed between section of jurisdiction, is provided with each lining segment along section of jurisdiction ring The section of jurisdiction steel bar stress 6 of shape direction arrangement and radially arranged section of jurisdiction lacing wire 7;The inner side of shield tunnel lining segment 1 and self-regulated It is fixedly connected but leaves gap 21 between section Fireproof concrete layer 2, gap 21, phase-changing energy storage material plate 22 and interior mixed with fiber Fiber concrete layer 23 constitutes self-regulation Fireproof concrete layer 2, and phase-changing energy storage material plate 22 and fiber concrete 23 are bonded to each other, Phase-changing energy storage material plate 22 is adjacent with the inner side of shield tunnel lining segment 1.When fire occurs, fiber concrete layer 23 is ground floor Protection, fiber is split in the antiknock of its internal doping can effectively suppress the generation of Spallation of Concrete.Due to the triggering of high temperature of fire, phase Change energy-storage material plate 22 will automatically inhale (put) heat, be stayed between the inner side of shield tunnel lining segment 1 and self-regulation Fireproof concrete layer 2 Some gaps 21 can further delay the transmission of high temperature, both collective effects, so that lining segment concrete temperature becomes Change amplitude, speed are small, and lining segment can automatically adapt to the pace of change of temperature in tunnel, it is ensured that it is in less temperature ladder Degree, prevent because programming rate is fast and caused by structure performance degradation.So, self-regulation Fireproof concrete layer 2 is formed and invested commonly The fire prevention mechanism system of shield lining segment body structure surface, effectively alleviates the damage that thermal shock is caused to tunnel lining structure.
The phase-changing energy storage material plate 22 is by the substantially unconverted solid-solid type phase-changing energy storage material system of phase in phase transition process Into, such as pentaerythrite, polyethylene, 2- dihydroxymethyls-propyl alcohol, neopentyl glycol or they cooperate into binary system or polynary System etc..The prefabricated slabbing of the solid-solid type phase-changing energy storage material plate 22 or tabular, fit on fiber concrete layer 23.It is excellent The thickness of phase-changing energy storage material 22 of selection of land, the prefabricated sheet or tabular is 3cm.Preferably, fiber concrete layer 23 by Concrete substrate 232 and antiknock are mixed after splitting the uniform stirring of fiber 231, the antiknock split fiber 231 for polypropylene fibre, Vinal, polyacrylonitrile fibre, Fypro, aramid fiber, Orlon fiber, polyester fiber, nylon fiber, Wei Ni One or more in synthetic fibre fiber, polyimide fiber etc..Preferably, the antiknock splits fiber 231 in outer layer fiber concrete Volume volume is 0.5~1% in layer 23, and no more than 1.2%.In addition certain volume can also be mixed in fiber concrete layer Similar steel fibre reinforcing fiber, with increase fiber concrete layer intensity.Preferably, the outer layer fiber concrete layer 23 Thickness is 5cm.Preferably, utilized between the self-regulation Fireproof concrete layer 2 and common shield tunnel lining segment 1 and connect spiral shell Bolt 8 is attached, and can be dismantled, replacement operation.Preferably, the thickness of self-regulation Fireproof concrete layer 2 is lining cutting to the maximum The 10% of section of jurisdiction gross thickness.
As shown in Figure 5, Figure 6, present invention can apply to circular shield tunnel lining segment, rectangular shield tunnel-liner pipe Piece.When circular shield tunnel lining segment is applied to, self-regulation Fireproof concrete layer 2 is circular configuration;When being applied to rectangle During shield tunnel lining segment, self-regulation Fireproof concrete layer 2 is arcuate structure or platy structure with radian.It is directed to not With shield tunnel different shape structure lining segment when, structure of the present invention according to different shape structure be adapted application.
In sum, shield tunnel self-regulation fire prevention lining segment structure of the present invention, can effectively control the liter of lining segment Warm speed, prevents inside lining concrete major injury and explosive spalling of the pipe-plate lining caused by heating up suddenly, and can The longitudinal rigidity of shield tunnel is improved to a certain extent, can reduce relative settlement of the lining cutting in TERM DEFORMATION, and because certainly Weight is smaller, will not cause excessive overall sedimentation because of the increase of tunnel liner.So, the present invention effectively overcomes in the prior art Various shortcoming and have high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe The personage for knowing this technology all can carry out modifications and changes under without prejudice to spirit and scope of the invention to above-described embodiment.Cause This, those of ordinary skill in the art is complete with institute under technological thought without departing from disclosed spirit such as Into all equivalent modifications or change, should be covered by claim of the invention.

Claims (7)

1. a kind of shield tunnel self-regulation fire prevention lining segment structure, it is characterised in that including shield tunnel lining segment (1) and Self-regulation Fireproof concrete layer (2), shield tunnel lining segment (1) inner side and self-regulation Fireproof concrete layer (2) gap are fixed, Self-regulation Fireproof concrete layer (2) is pasted by phase-changing energy storage material plate (22) and interior fiber concrete layer (23) mixed with fiber Conjunction is formed, and the phase-changing energy storage material plate (22) is adjacent with shield tunnel lining segment (1) inner side.
2. shield tunnel according to claim 1 self-regulation fire prevention lining segment structure, it is characterised in that:The phase transformation storage Energy plate of material (22) is the sheet plate being made up of one or more solid-solid type phase-changing energy storage materials, described solid-solid type phase transformation Energy storage material includes pentaerythrite, polyethylene, 2- dihydroxymethyls-propyl alcohol or neopentyl glycol.
3. shield tunnel according to claim 1 self-regulation fire prevention lining segment structure, it is characterised in that:The fiber is mixed Fiber is mixed for fiber (231) is split in antiknock in solidifying soil layer (23).
4. shield tunnel according to claim 3 self-regulation fire prevention lining segment structure, it is characterised in that:The antiknock is split Fiber (231) is polypropylene fibre, vinal, polyacrylonitrile fibre, Fypro, aramid fiber, Orlon fiber, One or more mixing in polyester fiber, nylon fiber, vinylon fiber, polyimide fiber.
5. according to claim 3 or 4 shield tunnel self-regulation fire prevention lining segment structure, it is characterised in that:It is described anti- The volume volume of explosion fiber (231) is 0.5%~1%.
6. shield tunnel according to claim 1 self-regulation fire prevention lining segment structure, it is characterised in that:The self-regulation The thickness of Fireproof concrete layer (2) is the 10% of lining segment gross thickness to the maximum.
7. shield tunnel according to claim 1 self-regulation fire prevention lining segment structure, it is characterised in that:The shield tunnel Fixed by bolt-clearance between road lining segment (1) and self-regulation Fireproof concrete layer (2).
CN201611067334.6A 2016-11-28 2016-11-28 Shield tunnel self-interacting fire prevention lining segment structure Active CN106761817B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611067334.6A CN106761817B (en) 2016-11-28 2016-11-28 Shield tunnel self-interacting fire prevention lining segment structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611067334.6A CN106761817B (en) 2016-11-28 2016-11-28 Shield tunnel self-interacting fire prevention lining segment structure

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CN106761817A true CN106761817A (en) 2017-05-31
CN106761817B CN106761817B (en) 2020-01-31

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115012984A (en) * 2022-08-05 2022-09-06 湖南大学 Phase change thermal insulation layer-UHPC combined shield segment capable of being assembled quickly

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000096995A (en) * 1998-09-25 2000-04-04 Kurosaki Refract Co Ltd Refractory structure with heat insulating member of concrete segment for tunnel
JP2003120197A (en) * 2001-10-17 2003-04-23 Kajima Corp Refractory heatproof concrete body and its structural body
FR2896796A1 (en) * 2006-01-31 2007-08-03 Eiffage Tp Sa Utilization of fibre added high performance concrete for the fabrication or protection of structural elements resistant to extreme temperature conditions
CN200952394Y (en) * 2006-09-22 2007-09-26 同济大学 Anticracking composite shield tunnel gilled tube
CN102936107A (en) * 2012-11-19 2013-02-20 湖北工业大学 High performance concrete containing composite fiber
CN204386622U (en) * 2014-12-31 2015-06-10 长安大学 A kind of tunnel is far from wall type insulation construction
CN105221165A (en) * 2015-10-12 2016-01-06 同济大学 Microcapsules are from fireproof tunnel concrete lining

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000096995A (en) * 1998-09-25 2000-04-04 Kurosaki Refract Co Ltd Refractory structure with heat insulating member of concrete segment for tunnel
JP2003120197A (en) * 2001-10-17 2003-04-23 Kajima Corp Refractory heatproof concrete body and its structural body
FR2896796A1 (en) * 2006-01-31 2007-08-03 Eiffage Tp Sa Utilization of fibre added high performance concrete for the fabrication or protection of structural elements resistant to extreme temperature conditions
CN200952394Y (en) * 2006-09-22 2007-09-26 同济大学 Anticracking composite shield tunnel gilled tube
CN102936107A (en) * 2012-11-19 2013-02-20 湖北工业大学 High performance concrete containing composite fiber
CN204386622U (en) * 2014-12-31 2015-06-10 长安大学 A kind of tunnel is far from wall type insulation construction
CN105221165A (en) * 2015-10-12 2016-01-06 同济大学 Microcapsules are from fireproof tunnel concrete lining

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
张宇峰 等: "《高技术纤维概论》", 30 November 2015, 中国纺织出版社 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115012984A (en) * 2022-08-05 2022-09-06 湖南大学 Phase change thermal insulation layer-UHPC combined shield segment capable of being assembled quickly
CN115012984B (en) * 2022-08-05 2022-11-22 湖南大学 Phase change thermal insulation layer-UHPC combined shield segment capable of being assembled quickly

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