CN109734374A - A kind of combined type Seismic Isolation of Isolation Layer structure for shield tunnel - Google Patents
A kind of combined type Seismic Isolation of Isolation Layer structure for shield tunnel Download PDFInfo
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- CN109734374A CN109734374A CN201910083463.1A CN201910083463A CN109734374A CN 109734374 A CN109734374 A CN 109734374A CN 201910083463 A CN201910083463 A CN 201910083463A CN 109734374 A CN109734374 A CN 109734374A
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- 238000002955 isolation Methods 0.000 title claims abstract description 129
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910001000 nickel titanium Inorganic materials 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000002131 composite material Substances 0.000 claims abstract description 14
- 239000011435 rock Substances 0.000 claims abstract description 14
- 239000011381 foam concrete Substances 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 18
- 239000000835 fiber Substances 0.000 claims description 18
- 239000003638 chemical reducing agent Substances 0.000 claims description 17
- 239000004568 cement Substances 0.000 claims description 14
- 230000035939 shock Effects 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000002585 base Substances 0.000 claims description 13
- 238000004078 waterproofing Methods 0.000 claims description 10
- 239000010881 fly ash Substances 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 8
- 239000006004 Quartz sand Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 6
- 239000000701 coagulant Substances 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 6
- 239000004088 foaming agent Substances 0.000 claims description 6
- 239000010451 perlite Substances 0.000 claims description 5
- 235000019362 perlite Nutrition 0.000 claims description 5
- -1 polypropylene Polymers 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 239000011398 Portland cement Substances 0.000 claims description 4
- 238000005187 foaming Methods 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 108010082495 Dietary Plant Proteins Proteins 0.000 claims description 3
- 240000000961 Setaria parviflora Species 0.000 claims description 3
- 238000010790 dilution Methods 0.000 claims description 3
- 239000012895 dilution Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 2
- 239000004567 concrete Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 12
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 49
- 238000000034 method Methods 0.000 description 5
- 239000012774 insulation material Substances 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical group [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical group [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- PCHPORCSPXIHLZ-UHFFFAOYSA-N diphenhydramine hydrochloride Chemical compound [Cl-].C=1C=CC=CC=1C(OCC[NH+](C)C)C1=CC=CC=C1 PCHPORCSPXIHLZ-UHFFFAOYSA-N 0.000 description 1
- 239000002355 dual-layer Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- RAFRTSDUWORDLA-UHFFFAOYSA-N phenyl 3-chloropropanoate Chemical compound ClCCC(=O)OC1=CC=CC=C1 RAFRTSDUWORDLA-UHFFFAOYSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 230000005428 wave function Effects 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a kind of combined type Seismic Isolation of Isolation Layer structures for shield tunnel, and including the first Seismic Isolation of Isolation Layer being arranged between country rock and just lining and just the second Seismic Isolation of Isolation Layer between lining and section of jurisdiction is arranged in；The thickness of first Seismic Isolation of Isolation Layer and the second Seismic Isolation of Isolation Layer is 0.25m~0.35m；First Seismic Isolation of Isolation Layer uses high-performance foam concrete material, and second Seismic Isolation of Isolation Layer uses Nitinol cement-base composite material.Before applying just lining, the high-performance foam concrete material is sprayed on the inside of country rock as the first Seismic Isolation of Isolation Layer, then just lining of constructing, then, it constructs on the inside of first lining the second Seismic Isolation of Isolation Layer, carries out section of jurisdiction construction, finally so as to complete the shield tunnel construction with the structure of Seismic Isolation of Isolation Layer containing combined type.The present invention utilizes two layers of Seismic Isolation of Isolation Layer, reaches while absorbing the energy of earthquake motion and limitation underground structure deforms and displacement.
Description
Technical field
The present invention relates to Underground Construction fields, more particularly to a kind of combined type Seismic Isolation of Isolation Layer knot for shield tunnel
Structure.
Background technique
The exploitation of China's underground space and the continuous expansion of underground structure construction scale, took place frequently in world wide in recent years
Violent earthquake different degrees of destruction is caused to the structure in tunnel, due to underground structure particularity, repair is carried out to it
It is extremely difficult.Traditional subterranean tunnel Seismic Design Method is realized using lining section and the reinforcement of tunneling boring reinforcement is thickeied.
By increasing sectional dimension of members and arrangement of reinforcement, the shock resistance that the methods of rigidity of structure carrys out reinforcement structure is improved.But these methods
Both for structure itself, if wanting to reach promotion anti-seismic performance, the purpose that will not be destroyed under general earthquake intensity geological process, cost
Promotion can it is very high, it is less economical, be not readily used in the extremely long works of this mileage number in tunnel.Therefore, it is badly in need of new think of
Road solves the problems, such as the antidetonation shock insulation of underground structure.
Summary of the invention
The purpose of the present invention is in view of the drawbacks of the prior art and limitation, to propose novel tunnel earthquake resistant construction,
Guidance is provided to the antidetonation construction in highlight lines area tunnel and is used for reference.The present invention utilizes two layers of Seismic Isolation of Isolation Layer, reaches while absorbing ground
The energy of vibration and the purpose of limitation underground structure deformation and displacement.I.e. between the country rock and lining cutting in tunnel, lining cutting and section of jurisdiction
Between use the Seismic Isolation of Isolation Layer of different materials, absorb country rock and be broadcast to the vibration of lining cutting, so that protection path structure is not destroyed.Make
With combined type Seismic Isolation of Isolation Layer structure, Seismic Isolation of Isolation Layer step-by-step construction way is taken, compared to single layer shock insulation construction method, can preferably be played
The ability that tunnel structure resists earthquake can be improved in the characteristic of every kind of shock insulation material itself.
In order to solve the above-mentioned technical problem, a kind of combined type Seismic Isolation of Isolation Layer structure for shield tunnel proposed by the present invention,
Including the first Seismic Isolation of Isolation Layer being arranged between country rock and just lining and just the second Seismic Isolation of Isolation Layer between lining and section of jurisdiction is set；Described
The thickness of one Seismic Isolation of Isolation Layer and the second Seismic Isolation of Isolation Layer is 0.25m~0.35m；First Seismic Isolation of Isolation Layer uses high-performance foam concrete
Material, second Seismic Isolation of Isolation Layer use Nitinol cement-base composite material.
Further, in the present invention, the component and mass fraction of the high-performance foam concrete material are as follows: cement 580
~620 parts, 100~120 parts of perlite, 240~260 parts of water, 5~6 parts of waterproofing agent, 12~14 parts of antifreezing agent, water-reducing agent 6~8
Part, 28~32 parts of coagulant, 1 part of fiber, 0.8 part of foam.
The cement selection label in the high-performance foam concrete material is not less than normal silicate P.042.5
Cement；The Zhu Yan selects level-one perlite；The waterproofing agent uses waterproofing agent of organosilicon；The antifreezing agent is using industrial coagulation
Native antifreezing agent；The water-reducing agent completes hydrochlorate high-performance water reducing agent using poly-, and alkali content is less than 10%, and water-reducing rate is greater than 25%, often
Press rate ratio in Qinshui less than 20%；The coagulant uses GK-3B type；The fiber uses polypropylene fibre or monkey grass；
The foam is prepared using vegetable protein type foaming agent, by the foaming agent and water by 1: 15 dilution, carries out physics with foaming machine
Foaming.
The component and mass fraction of the Nitinol cement-base composite material are as follows: 540~560 parts of cement, quartz sand 220
~240 parts, 300~310 parts of water, 990~1020 parts of flyash, 2~3 parts of water-reducing agent；It further include having Nitinol fiber, it is described
The volume ratio of the sum of above-mentioned each component is 1.8% in Nitinol fiber and the Nitinol cement-base composite material.
The cement selection label in the Nitinol cement-base composite material is not less than common silicic acid P.042.5
Salt cement；The average grain diameter of the quartz sand is 110 μm, and maximum particle diameter is 300 μm；The flyash is level-one flyash；Institute
The length for stating Nitinol fiber is about 3cm, and diameter is about 0.25mm；The water-reducing agent completes hydrochlorate high-performance diminishing using poly-
Agent, alkali content is less than 10%, and water-reducing rate is greater than 25%, and normal pressure Qinshui rate ratio is less than 20%.
Combined type Seismic Isolation of Isolation Layer structure for shield tunnel of the invention, wherein first Seismic Isolation of Isolation Layer (1) and second every
The thickness for shaking layer (3) is 0.25~0.35m.
The invention has the following advantages:
Lining cutting and surrounding rocks are separated by Seismic Isolation of Isolation Layer, high-performance Seismic Isolation of Isolation Layer can not only separate surrounding formation to tunnel
Restraining force, and the relative displacement between tunnel and stratum can be reduced, it can reach the purpose of shock insulation, improve tunnel structure and resist shake
Harmful ability.And the materials of Seismic Isolation of Isolation Layer can be further reduced using double-layer combined shock insulation processing method, play every kind of material
Respective feature.Structure of the invention is reasonable, has for saving tunnel structure for maintenance cost aspect after the investment and shake of antidetonation
Apparent effect.
Detailed description of the invention
Fig. 1 is schematic diagram of the present invention for the combined type Seismic Isolation of Isolation Layer structure of shield tunnel；
Fig. 2 is construction location schematic diagram of the present invention for the combined type Seismic Isolation of Isolation Layer structure of shield tunnel.
The first Seismic Isolation of Isolation Layer of 1-；2- lining cutting；The second Seismic Isolation of Isolation Layer of 3-；4- country rock；The section of jurisdiction 5-.
Specific embodiment
Following further describes the present invention with reference to the drawings.
Mentality of designing of the invention is, using high-performance shock insulation material layer to the absorption of seimic wave propagation, to guarantee tunnel
Road is not destroyed under ground seismic wave function.Innovative compound type dual-layer Seismic Isolation of Isolation Layer structure has construction is simple, damping shock resistance
The high feature of energy.
A kind of combined type Seismic Isolation of Isolation Layer structure for shield tunnel proposed by the present invention, including setting serve as a contrast 2 in country rock 4 and just
Between the first Seismic Isolation of Isolation Layer 1 and be arranged in just lining 2 and section of jurisdiction 5 between the second Seismic Isolation of Isolation Layer 3；First Seismic Isolation of Isolation Layer 1 and second
The thickness of Seismic Isolation of Isolation Layer 3 is 0.25m~0.35m；First Seismic Isolation of Isolation Layer 1 uses high-performance foam concrete material, and described the
Two Seismic Isolation of Isolation Layer 3 are using using Nitinol cement-base composite material.The thickness of first Seismic Isolation of Isolation Layer 1 and the second Seismic Isolation of Isolation Layer 3 is equal
For 0.25~0.35m.
In the present invention, the component and mass fraction of the high-performance foam concrete material are as follows: 580~620 parts of cement, precious
100~120 parts of pearl rock, 240~260 parts of water, 5~6 parts of waterproofing agent, 12~14 parts of antifreezing agent, 6~8 parts of water-reducing agent, coagulant 28
~32 parts, 1 part of fiber, 0.8 part of foam.The cement selection label is not less than ordinary portland cement P.042.5.The pearl
Rock selects level-one perlite.The waterproofing agent uses waterproofing agent of organosilicon, and waterproofing agent of organosilicon, its main component is methyl silicon
Sodium alkoxide.Industrial concrete antifreezer can be used in antifreezing agent, and main component is sodium nitrite, carbonate, calcium chloride, calcium nitrite
Deng.The water-reducing agent completes hydrochlorate high-performance water reducing agent using poly-, and alkali content is less than 10%, and water-reducing rate is greater than 25%, normal pressure Qinshui
Rate ratio is less than 20%.GK-3B type can be used in coagulant, and main component is modified sodium aluminate, aluminum sulfate, hydramine.Fiber can be used
Polypropylene fibre, monkey grass etc..Pencil Monofilament polypropylene fibres density is 900kg/m3, tensile strength is not less than
425.5MPa, elasticity modulus 4.5GPa, long 19mm, 45 μm of equivalent diameter.The foam is prepared using vegetable protein type foaming agent,
By the foaming agent and water by 1: 15 dilution, physical blowing is carried out with foaming machine.Prepare high-performance foam concrete material according to
The component is mixed, is uniformly mixing to obtain foamed concrete material by said ratio.
In the present invention, the component and mass fraction of the Nitinol cement-base composite material are as follows: 540~560 parts of cement,
220~240 parts of quartz sand, 300~310 parts of water, 990~1020 parts of flyash, 2~3 parts of water-reducing agent；It further include having Nitinol
The volume ratio of fiber, the Nitinol fiber and the sum of above-mentioned each component in the Nitinol cement-base composite material is
1.8%.Cement selection label is not less than ordinary portland cement P.042.5.110 μm of quartz sand average grain diameter, maximum particle diameter
300μm.Flyash is level-one flyash.The length of Nitinol fiber is about 3cm, and diameter is about 0.25mm.Water-reducing agent can be adopted
Complete hydrochlorate high-performance water reducing agent with poly-, alkali content is less than 10%, and water-reducing rate is greater than 25%, and normal pressure Qinshui rate ratio is less than 20%.System
Standby Nitinol cement-base composite material mixes the component according to said ratio, stirs evenly as gained.
Shield tunnel construction method with above-mentioned combined type Seismic Isolation of Isolation Layer structure is used around country rock before applying just lining 2
One layer of the high-performance foam concrete material spraying worked good is used as the first Seismic Isolation of Isolation Layer 2, with a thickness of 0.3m or so；It constructs again just
Then lining sprays one layer of Nitinol cement-base composite material as the second Seismic Isolation of Isolation Layer 3 in first 2 inside of lining again, finally carries out pipe
Piece 5 is constructed, so as to complete the shield tunnel construction with the Seismic Isolation of Isolation Layer containing combined type.
The present invention is separated lining cutting and surrounding rocks by Seismic Isolation of Isolation Layer, and high-performance Seismic Isolation of Isolation Layer can not only separate surrounding formation pair
The restraining force in tunnel, and the relative displacement between tunnel and stratum can be reduced, it can reach the purpose of shock insulation, improve tunnel structure
Resist the ability of earthquake.The materials of Seismic Isolation of Isolation Layer can be further reduced using double-layer combined shock insulation processing method, it can also be more
Different shock insulation materials is targetedly used, and the complexity variation of work progress is little.
The present invention constructs high-performance shock insulation material and two layers of Nitinol cement-base composite material point and lining cutting and country rock
Between and section of jurisdiction and lining cutting between.By analysis, this way has more on the basis of not changing original use shock insulation total amount of material
Add outstanding isolation property.Using two layers of Seismic Isolation of Isolation Layer, reach and meanwhile absorb earthquake motion energy and limitation underground structure deformation and
Displacement.
The above is only a preferred embodiment of the present invention, it should be noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, it can also make several improvements and retouch, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (6)
1. a kind of combined type Seismic Isolation of Isolation Layer structure for shield tunnel, it is characterised in that: served as a contrast including setting in country rock (4) and just
(2) the second Seismic Isolation of Isolation Layer (3) of the first Seismic Isolation of Isolation Layer (1) and setting between just lining (2) and section of jurisdiction (5) between；Described first every
The thickness for shaking layer (1) and the second Seismic Isolation of Isolation Layer (3) is 0.25m~0.35m；First Seismic Isolation of Isolation Layer (1) uses high-performance foam
Concrete material, second Seismic Isolation of Isolation Layer (3) is using using Nitinol cement-base composite material.
2. being used for the combined type Seismic Isolation of Isolation Layer structure of shield tunnel according to claim 1, it is characterised in that: the high-performance bubble
The component and mass fraction of foam concrete material are as follows: 580~620 parts of cement, 100~120 parts of perlite, 240~260 parts of water,
5~6 parts of waterproofing agent, 12~14 parts of antifreezing agent, 6~8 parts of water-reducing agent, 28~32 parts of coagulant, 1 part of fiber, 0.8 part of foam.
3. being used for the combined type Seismic Isolation of Isolation Layer structure of shield tunnel according to claim 2, it is characterised in that:
The cement selection label is not less than ordinary portland cement P.042.5；
The Zhu Yan selects level-one perlite；
The waterproofing agent uses waterproofing agent of organosilicon；
The antifreezing agent is using industrial concrete antifreezer；
The water-reducing agent completes hydrochlorate high-performance water reducing agent using poly-, and alkali content is less than 10%, and water-reducing rate is greater than 25%, normal pressure Qinshui
Rate ratio is less than 20%；
The coagulant uses GK-3B type；
The fiber uses polypropylene fibre or monkey grass；
The foam is prepared using vegetable protein type foaming agent, by the foaming agent and water by 1: 15 dilution, is carried out with foaming machine
Physical blowing.
4. being used for the combined type Seismic Isolation of Isolation Layer structure of shield tunnel according to claim 1, it is characterised in that: the Nitinol
The component and mass fraction of cement-base composite material are as follows: 540~560 parts of cement, 220~240 parts of quartz sand, water 300~310
Part, 990~1020 parts of flyash, 2~3 parts of water-reducing agent；Further include having Nitinol fiber, the Nitinol fiber with it is described
The volume ratio of the sum of above-mentioned each component is 1.8% in Nitinol cement-base composite material.
5. being used for the combined type Seismic Isolation of Isolation Layer structure of shield tunnel according to claim 4, it is characterised in that:
The cement selection label is not less than ordinary portland cement P.042.5；
The average grain diameter of the quartz sand is 110 μm, and maximum particle diameter is 300 μm；
The flyash is level-one flyash；
The length of the Nitinol fiber is about 3cm, and diameter is about 0.25mm；
The water-reducing agent completes hydrochlorate high-performance water reducing agent using poly-, and alkali content is less than 10%, and water-reducing rate is greater than 25%, normal pressure Qinshui
Rate ratio is less than 20%.
6. being used for the combined type Seismic Isolation of Isolation Layer structure of shield tunnel according to claim 1, which is characterized in that first shock insulation
The thickness of layer (1) and the second Seismic Isolation of Isolation Layer (3) is 0.25~0.35m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910083463.1A CN109734374A (en) | 2019-01-29 | 2019-01-29 | A kind of combined type Seismic Isolation of Isolation Layer structure for shield tunnel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910083463.1A CN109734374A (en) | 2019-01-29 | 2019-01-29 | A kind of combined type Seismic Isolation of Isolation Layer structure for shield tunnel |
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| Publication Number | Publication Date |
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| CN109734374A true CN109734374A (en) | 2019-05-10 |
Family
ID=66366492
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Cited By (3)
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|---|---|---|---|---|
| CN110529143A (en) * | 2019-09-25 | 2019-12-03 | 浙江海洋大学 | For enhancing the component of tunnel shock resistance |
| CN111577343A (en) * | 2020-04-10 | 2020-08-25 | 北京科技大学 | Multifunctional mining surrounding rock impact vibration shielding structure and method |
| CN112554908A (en) * | 2020-12-09 | 2021-03-26 | 张琼方 | Reinforcing device for shield tunnel of soft soil foundation and using method |
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| CN111577343A (en) * | 2020-04-10 | 2020-08-25 | 北京科技大学 | Multifunctional mining surrounding rock impact vibration shielding structure and method |
| CN112554908A (en) * | 2020-12-09 | 2021-03-26 | 张琼方 | Reinforcing device for shield tunnel of soft soil foundation and using method |
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