CN108331596A - A kind of construction method of highway in cold region tunnel foam glass insulating layer composite fire retardant coating - Google Patents
A kind of construction method of highway in cold region tunnel foam glass insulating layer composite fire retardant coating Download PDFInfo
- Publication number
- CN108331596A CN108331596A CN201810051788.7A CN201810051788A CN108331596A CN 108331596 A CN108331596 A CN 108331596A CN 201810051788 A CN201810051788 A CN 201810051788A CN 108331596 A CN108331596 A CN 108331596A
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- Prior art keywords
- insulating layer
- highway
- tunnel
- keel
- insulation board
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- 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.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The present invention relates to a kind of construction method of highway in cold region tunnel foam glass insulating layer composite fire retardant coating, construction method includes the following steps：Step a, U-shaped card tool is fixed on tunnel double-lining with locking member；Step b, keel are fixed on by fastener on U-shaped card tool；Step c, fixed foam glass heat-insulating plate on tunnel double-lining fills mortar bonding agent in the gap between foamed glass insulation board and tunnel double-lining；Step d, filling-foam cement in the gap between every two pieces of foamed glass insulation boards；Step e, it is laid with grid cloth along the top surface of foamed glass insulation board and keel.Construction method in the present invention, filling-foam cement in gap between every two pieces of foamed glass insulation boards, foam cement is as a kind of thermal insulation material, the heat preservation loophole caused by gap is also compensated for while having filled up gap, be conducive to popularization and application of the construction method in tunnel insulation technical field, there is higher benefit.
Description
Technical field
The present invention relates to tunnel insulation technical field, specifically a kind of highway in cold region tunnel foam glass insulating layer is compound anti-
The construction method of fiery coating.
Background technology
The constructing tunnel of extremely frigid zones needs insulating layer and waterproof layer to prevent because of infiltration, various freeze injuries caused by ponding,
For example frost heave makes the volume of ponding increase 9%, increases huge pressure to tunnel, changes the ambient stress in tunnel, influence tunnel
The stability in road and safety reduce the service life in tunnel, in extremely frigid zones harsh climate and the geological environment of hardships and dangers,
Tunnel will realize heat insulation effect, reduce the influence to tunnel such as frost heave, very high requirement is proposed to heat preservation.
In the prior art, usually using foamed glass insulation board, foamed glass insulation board is as a kind of nothing of good performance
Machine thermal insulation material, it is long with service life, volume stability is good, water absorption rate is low, hydroscopicity is low, vapor permeability is low, resistance
The advantages that combustion property is high, using the tunnel construction of extremely frigid zones, but the piece left during the installation process can cause heat preservation loophole,
Influence integral heat insulation effect, and the dead weight that foamed glass insulation board is relatively heavy so that the peace that foamed glass insulation board falls off
Full accident happens occasionally, and has seriously affected application prospect of the foamed glass insulation board thermal insulation material in tunneling insulating layer construction.
Invention content
The present invention is to provide a kind of foam glass heat preservation of highway in cold region tunnel to overcome above-mentioned defect in the prior art
The construction method of layer composite fire retardant coating, the construction method make manufactured tunnel service life long, and stability is high, water absorption rate
It is low, it is suitble to weather and geological conditions harsh in extremely frigid zones constructing tunnel, is conducive to the construction method in tunnel insulation technology
The popularization and application in field have higher social benefit.
In order to achieve the above-mentioned object of the invention, the present invention uses following technical scheme:A kind of highway in cold region tunnel foam glass
The construction method of insulating layer composite fire retardant coating, the construction method include the following steps：Step a, with locking member by U-shaped card
Tool is fixed on tunnel double-lining；Step b, keel are fixed on by fastener on the U-shaped card tool；Step c, on tunnel double-lining
Fixed foam glass heat-insulating plate fills mortar bonding agent in the gap between foamed glass insulation board and tunnel double-lining；Step
D, filling-foam cement in the gap between every two pieces of foamed glass insulation boards；Step e, along foamed glass insulation board and dragon
The top surface of bone is laid with grid cloth.
As a preferred embodiment of the present invention, step f, coating thickness is not low on foamed glass insulation board with keel
In the fireproof coating of 15mm.
As a preferred embodiment of the present invention, fireproof coating is more than that the thickness of keel top surface is at least 5mm in step f.
As a preferred embodiment of the present invention, the U-shaped card tool is installed on the both sides of the foamed glass insulation board, bubble
Spacing between the U-shaped card tool that the width of foam glass thermal insulation board is arranged with each two is adapted.
As a preferred embodiment of the present invention, the width of the U-shaped card tool is less than or equal to 15mm.
As a preferred embodiment of the present invention, the height of U-shaped card tool side is higher than the foamed glass insulation board
The sum of with the height of keel；U-shaped card tool include fixed part with can bending part, it is described can bending part it is triangular in shape, can bending
It is flush with keel surface after portion's bending.
As a preferred embodiment of the present invention, it is described can bending part be equipped with locking hole, through having in the locking hole
The iron wire for making U-shaped card tool be fixedly linked with grid cloth.
As a preferred embodiment of the present invention, the keel are embedded in the U-shaped card tool, the two sides and top of keel
Face is equipped with rough point.
As a preferred embodiment of the present invention, the foamed glass insulation board is compounded with penetrant crystalline with foam cement
Waterproof material.
As a preferred embodiment of the present invention, the grid cloth is alkali resistance grid cloth.
Compared with prior art, beneficial effects of the present invention are as follows：
1）The construction method of highway in cold region tunnel foam glass insulating layer composite fire retardant coating in the present invention, in every two pieces of foams
Filling-foam cement in gap between glass heat-insulating plate, foam cement are filling up the same of gap as a kind of thermal insulation material
When also compensate for heat preservation loophole caused by gap.
2）The construction method of highway in cold region tunnel foam glass insulating layer composite fire retardant coating in the present invention, by using
Foam cement by foamed glass insulation board bonding be stitched together, make foamed glass insulation board uniform force, with tunnel double-lining it
Between bonding it is more secured, make foamed glass insulation board be not easy to fall off from tunnel double-lining, increase the structural strength of tunnel entirety.
3）The construction method of highway in cold region tunnel foam glass insulating layer composite fire retardant coating in the present invention, by using
Mortar adhesive agent is filled in the gap between tunnel double-lining and foamed glass insulation board, is formed double insurance, is made tunnel insulation
Layer stability is relatively reliable.
Description of the drawings
Fig. 1 be this implementation syncope due to pathogenic cold area vcehicular tunnel foam glass insulating layer composite fire retardant coating construction method in insulating layer knot
Structure schematic diagram；
Fig. 2 is the structural schematic diagram that U-shaped card has in the present embodiment；
Fig. 3 is in the present embodiment for the scheme of installation of U-shaped card tool and, grid cloth；
Fig. 4 is in the present embodiment for U-shaped card tool, the scheme of installation of expansion bolt, grid cloth and keel；
Fig. 5 is scheme of installation of the foam glass board in tunnel in the present embodiment；
Fig. 6 is sectional schematic diagram of the foam glass board in tunnel in the present embodiment.
Reference numeral：1, foamed glass insulation board；2, keel；3, fastener；4, U-shaped card has；41, fixed part；42, it can roll over
Turn of bilge；420, locking hole；5, locking member；6, foam cement；7, tunnel double-lining；8, grid cloth；9, fireproof coating；10, iron wire.
Specific implementation mode
It elaborates below in conjunction with the accompanying drawings to the embodiment of the present invention.
Embodiment：As shown in Figures 1 to 6, a kind of construction of highway in cold region tunnel foam glass insulating layer composite fire retardant coating
Method, above-mentioned construction method include the following steps：
Step a, U-shaped card tool 4 is fixed on tunnel double-lining 7 with locking member 5, locking member 5 can use expansion bolt, expanding screw
Process is relatively simple when bolt is installed, and is conveniently operated the installation of personnel, tunnel double-lining 7 be tunnel construction in the early stage
The form concrete or reinforced concrete lining layer applied on the inside of supporting collectively constitutes combined type with preliminary bracing and just builds, tunnel two
In contrast lining and preliminary bracing, refer to being built with materials such as concrete under conditions of tunnel has carried out preliminary bracing
Inner lining, to reach support reinforcement, optimize the effects that route waterproof and water drainage system, aesthetic appeal, to adapt to modernization high speed road
The requirement of road tunnel construction.
Step b, keel 2 are fixed on by fastener 3 on U-shaped card tool 4, fastener 3 can use it is simple in structure from
Attack nail, self threading pin due to its be voluntarily molded or can tapping coordinate its screw thread, closed with higher anti-loose ability in group,
And can load and unload, it is easy to use, and manufacturing cost is low.
Step c, foamed glass insulation board 1 is fixed on 7 surface of tunnel double-lining with keel 2, due to the foam glass of plane
Thermal insulation board 1 can form gap on the arch face in tunnel, with height in the gap between foamed glass insulation board 1 and tunnel double-lining 7
It presses spray gun spraying to fill mortar bonding agent, realizes fixation of the foamed glass insulation board 1 on tunnel double-lining 7, reduce foam glass
The probability that thermal insulation board 1 falls off.
Step d, filling-foam cement 6 in the gap between every two pieces of foamed glass insulation boards 1, is foamed with spray gun spraying
Cement fills piece, while making up heat preservation loophole, completes the fixation to foamed glass insulation board 1.
Step e, it is laid with grid cloth 8 along the top surface of foamed glass insulation board 1 and keel 2, the laying of grid cloth 8 prevents from preventing
Fiery coating falls off and cracks.
Step f, on foamed glass insulation board 1 and keel 2, coating thickness is not less than the fireproof coating 9 of 15mm, spraying
The design of thickness effectively reduces influence of the fire to tunnel inner thermal insulating layer.
Foamed glass insulation board 1 and foam cement 6 for being filled between foamed glass insulation board 1 are compounded with infiltration
Crystalline waterproof coating material, to prevent foamed glass insulation board 1 and foam cement 6 from seeping water, capillary crystalline waterproof coating material（Crystal
infiltration activity of parent material）It is the active material that a kind of molecular structure is activated silica, point
Son amount is small, contains hydrophobic grouping and hydrophilic radical simultaneously, hydrophily is more than hydrophobicity, water-soluble, in dry environment not
Polycondensation crystalline polamer occurs, and polycondensation crystalline polamer occurs in wet environment, by activated silica, cement, active inorganic mixture
Etc. mixing, the closed active material of water conduction fracture coated can generate secondary knot after meeting water at Defect Base
Crystalline substance has the function of the defects of repairing micro-crack automatically, and anti-base's variation is strong, and permeability is strong, and has alkaline-resisting performance, is compounded with
It is long that the foamed glass insulation board 1 and foam cement 6 of water conduction fracture can be truly realized service life, and ponding is avoided to ooze
Tunnel is leaked into, ensure that the service life in tunnel.
Fireproof coating 9 is more than that the thickness of 5 top surface of keel is at least 5mm in step f, and keel 5, which are entirely encapsulated in fire prevention, to be applied
In material 9, influence of the fire to tunnel is reduced.
Two U-shaped card tools 4 are separately mounted to the both sides of foamed glass insulation board 1.And it is bonded the side of foamed glass insulation board 1
Side is installed, i.e., the width of foamed glass insulation board 1 is identical as the spacing between the U-shaped card tool 4 that each two is arranged, to ensure to keep the temperature
The structural strength of layer.
The width of foamed glass insulation board 1 is 60cm, and the spacing between two U-shaped card tools 4 is equal, to ensure insulating layer
Stability.
The width of U-shaped card tool 4, which is that the width consistent with 2 length direction of keel is most wide, is no more than 15mm, to ensure foam
Spacing between glass heat-insulating plate 1 minimizes, and reduces the foamed glass insulation board 1 and foam formed by U-shaped card tool 4 as far as possible
Spacing between glass heat-insulating plate 1 avoids heat preservation loophole, can be only achieved best heat insulation effect.
The height of 4 sides of U-shaped card tool is slightly above the sum of the height of above-mentioned foamed glass insulation board 1 and keel 2, facilitates foam
The installation of glass heat-insulating plate 1 and keel 2.
U-shaped card tool 4 include the fixed fixed part 41 being connected on keel 2 and by external force bending can bending part 42,
During use, can use hammer can bending part 42 to two Edge Bends, be conveniently operated.
U-shaped card tool 4 on can bending part 42 it is triangular in shape, one side making material save, use cost is low, on the other hand,
Convenient for bending, reduce operation difficulty, can after 42 bending of bending part with 2 upper surface flush of keel.
Can bending part 42 be equipped with locking hole 420, grid cloth 8 is equipped on keel 2, in order to make grid cloth 8 be fixed on dragon
On bone 2, grid cloth 8 is avoided to fall off, with effective protection fireproof coating 9, is equipped in locking hole 420 and is bundled with 8 phase of grid cloth
Fixed iron wire 10, iron wire 10 can be that galvanized wire is not easily broken with good toughness and elasticity, and service life is long,
And the zinc coat having can effectively improve iron wire 10 anti-corrosion property it is strong.
The effect of grid cloth 8 is that fireproof coating 10 falls off and cracks in order to prevent.
Keel 2 be embedded at U-shaped card tool 4 in, in order to facilitate fireproof coating 9 spraying and further prevent fireproof coating 9
Fall off, the two sides and top surface of keel 2 are equipped with rough point, increase the frictional force on 2 surface of keel, also increase anti-
Contact area between fiery coating 9 and keel 2 reduces the probability that fireproof coating 9 falls off, and ensure fireproof coating 9 uses the longevity
Life, and then ensure the service life in insulating layer and tunnel, reduce maintenance cost.
Grid cloth 8 is alkali resistance grid cloth, and grid cloth 8 is corroded by the foam cement 6 of alkalinity in order to prevent, to ensure grid
The service life of cloth 8 reduces use cost, and being capable of effective protection fireproof coating 9.
The construction method of highway in cold region tunnel foam glass insulating layer composite fire retardant coating in the present embodiment, by using
Foamed glass insulation board 1 is mounted on tunnel double-lining 7 by construction method described above, tunneling insulating layer construction worker, tunnel
Road comes into operation by some time, since foamed glass insulation board 1 is secured firmly to tunnel by foam cement 6 by keel 2
On the lining of road two 7, the insulating layer for efficiently avoiding to occur falls off, and due to the use of the excellent technique of this method, has
Freeze injury occurs caused by effect avoids the joint leak between foamed glass insulation board 1, simultaneously because foamed glass insulation board 1
It is compounded with capillary crystalline waterproof coating material with the foam cement 6 of seam crossing, insulating layer water absorption rate substantially reduces, so as to avoid heat preservation
The possibility that the heat-insulating property of material is reduced by water damage maintains the excellent heat insulation effect of thermal insulation material, so as to avoid tunnel
It generates freeze injury because heat insulation effect reduces caused by the safety in tunnel and endangers.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention；Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Although reference numeral in figure is used more herein：1, foamed glass insulation board；2, keel；3, fastener；4、U
Type fixture；41, fixed part；It 42, can bending part；420, locking hole；5, locking member；6, foam cement；7, tunnel double-lining；8, grid
Cloth；9, fireproof coating；10, the terms such as iron wire, but it does not preclude the possibility of using other terms.It is only using these terms
In order to more easily describe and explain the essence of the present invention；Being construed as any one of the additional limitations all is and the present invention
What spirit was disagreed.
Claims (10)
1. a kind of construction method of highway in cold region tunnel foam glass insulating layer composite fire retardant coating, it is characterised in that：Described
Construction method includes the following steps：Step a, locking member is used（5）U-shaped card is had（4）It is fixed on tunnel double-lining（7）On；Step b,
By keel（2）Pass through fastener（3）It is fixed on the U-shaped card tool（4）On；Step c, tunnel double-lining（7）Upper fixed foam glass
Thermal insulation board（1）, in foamed glass insulation board（1）With tunnel double-lining（7）Between gap in fill mortar bonding agent；Step d, exist
Every two pieces of foamed glass insulation boards（1）Between gap in filling-foam cement（6）；Step e, along foamed glass insulation board
（1）With keel（2）Top surface be laid with grid cloth（8）.
2. a kind of construction party of highway in cold region tunnel foam glass insulating layer composite fire retardant coating according to claim 1
Method, it is characterised in that：Step f, in foamed glass insulation board（1）With keel（2）On coating thickness be not less than 15mm fire prevention
Coating（9）.
3. a kind of construction party of highway in cold region tunnel foam glass insulating layer composite fire retardant coating according to claim 2
Method, it is characterised in that：Fireproof coating in step f（9）More than keel（5）The thickness of top surface is at least 5mm.
4. a kind of construction party of highway in cold region tunnel foam glass insulating layer composite fire retardant coating according to claim 1
Method, it is characterised in that：The U-shaped card tool（4）It is installed on the foamed glass insulation board（1）Both sides, foamed glass insulation board
（1）The U-shaped card of width and each two setting have（4）Between spacing be adapted.
5. a kind of construction party of highway in cold region tunnel foam glass insulating layer composite fire retardant coating according to claim 4
Method, it is characterised in that：The U-shaped card tool（4）Width be less than or equal to 15mm.
6. a kind of construction party of highway in cold region tunnel foam glass insulating layer composite fire retardant coating according to claim 1
Method, it is characterised in that：The U-shaped card tool（4）The height of side is higher than the foamed glass insulation board（1）With keel（2）Height
The sum of degree；The U-shaped card tool（4）Including fixed part（41）With can bending part（42）, it is described can bending part（42）It is triangular in shape, it can
Bending part（42）After bending with keel（2）Surface is flush.
7. a kind of construction party of highway in cold region tunnel foam glass insulating layer composite fire retardant coating according to claim 6
Method, it is characterised in that：It is described can bending part（42）It is equipped with locking hole（420）, the locking hole（420）It is interior through have make it is U-shaped
Fixture（4）With grid cloth（8）The iron wire being fixedly linked（10）.
8. a kind of construction party of highway in cold region tunnel foam glass insulating layer composite fire retardant coating according to claim 1
Method, it is characterised in that：The keel（2）It is embedded at the U-shaped card tool（4）It is interior, keel（2）Two sides and top surface be equipped with it is recessed
The point of convex injustice.
9. a kind of construction party of highway in cold region tunnel foam glass insulating layer composite fire retardant coating according to claim 1
Method, it is characterised in that：The foamed glass insulation board（1）With foam cement（6）It is compounded with water conduction fracture.
10. a kind of construction party of highway in cold region tunnel foam glass insulating layer composite fire retardant coating according to claim 1
Method, it is characterised in that：The grid cloth（8）For alkali resistance grid cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810051788.7A CN108331596B (en) | 2018-01-19 | 2018-01-19 | Construction method of composite fireproof paint for foam glass heat-insulating layer of highway tunnel in cold region |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810051788.7A CN108331596B (en) | 2018-01-19 | 2018-01-19 | Construction method of composite fireproof paint for foam glass heat-insulating layer of highway tunnel in cold region |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108331596A true CN108331596A (en) | 2018-07-27 |
| CN108331596B CN108331596B (en) | 2020-01-31 |
Family
ID=62925970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810051788.7A Active CN108331596B (en) | 2018-01-19 | 2018-01-19 | Construction method of composite fireproof paint for foam glass heat-insulating layer of highway tunnel in cold region |
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| Country | Link |
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| CN (1) | CN108331596B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019059776A1 (en) * | 2017-09-22 | 2019-03-28 | Foamrox As | Tunnel profile element made of foam glass panels |
| CN113389577A (en) * | 2021-06-18 | 2021-09-14 | 山东高速高新材料科技有限公司 | Construction method for mounting foamed aluminum plate in tunnel |
| CN113404515A (en) * | 2021-06-18 | 2021-09-17 | 山东高速高新材料科技有限公司 | Tunnel foamed aluminum plate and secondary lining concrete integral casting construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019059776A1 (en) * | 2017-09-22 | 2019-03-28 | Foamrox As | Tunnel profile element made of foam glass panels |
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| CN113404515A (en) * | 2021-06-18 | 2021-09-17 | 山东高速高新材料科技有限公司 | Tunnel foamed aluminum plate and secondary lining concrete integral casting construction method |
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| CN108331596B (en) | 2020-01-31 |
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