CN206245161U - One kind is applied to the fire-retardant SBS pitches composite pavement structure in tunnel - Google Patents
One kind is applied to the fire-retardant SBS pitches composite pavement structure in tunnel Download PDFInfo
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- CN206245161U CN206245161U CN201621161239.8U CN201621161239U CN206245161U CN 206245161 U CN206245161 U CN 206245161U CN 201621161239 U CN201621161239 U CN 201621161239U CN 206245161 U CN206245161 U CN 206245161U
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Abstract
Be applied to the fire-retardant SBS pitches composite pavement structure in tunnel the utility model discloses one kind, be included in roadbed top along close roadbed direction lay successively above layer, middle surface layer, cutting optimal, semi-rigid type base, crushed rock base course, wherein：Layer is the warm mix flame-retardant SBS pitches that thickness is 5~8cm above described, the thickness of middle surface layer is 8~10cm, the thickness of cutting optimal is 8~12cm, and semi-rigid type base thickness is 35~40cm, and underlayment uses 15~20cm graded broken stones or not sieved rubble and cement composition.The utility model is directed to the execution conditions and environment of freeway tunnel bituminous paving, the rut amount of SBS bituminous pavings is reduced using the good non-deformability of semi-rigid type base and anti-shear ability, the warm mix flame-retardant SBS pitches for using farthest reduce the injury to people when fire incident can occur in tunnel, the stability and bearing capacity of pavement structure are lifted using continuous grading concrete base layer, so that the significantly more efficient life-span for improving tunnel road surface and performance.
Description
Technical field：
The utility model is related to a kind of asphalt pavement structure, and in particular to it is multiple that one kind is applied to the fire-retardant SBS pitches in tunnel
Box-like pavement structure.
Background technology：
With the increase continued to bring out with tunnel traffic amount of vcehicular tunnel, the frequency that tunnel fire hazard occurs also gradually increases
Greatly.According to foreign statistic, highway fire occurrence frequency is about 0.71107veh/km, and fire in tunnel occurrence frequency is about
Fire in 0.331107veh/km o tunnels is an international problem, and many countries occurred very serious in the world
Tunnel fire hazard accident.Tunnel fire hazard causes the integrally-built serious damage of tunnel facility and tunnel, causes short then a few hours, long
Then several days even more prolonged road traffics are interrupted, and seriously threaten the safety of life and property of people, cause to be unable to estimate
Economic loss.When there is fire in tunnel, substantial amounts of cigarette, heat are difficult exclusion and go, full of smoke in hole, and illumination is also broken
It is bad, On The Deterioration of Visibility Over；Simultaneously with high temperature and poison gas, very big difficulty is brought to safe escape and rescue work；Tunnel fire hazard is same
When also bring very big destruction to road surface.
Semi-rigid asphalt pavement as China Higher level Highway Main want road surface types, with pavement strength it is high, carry
Power is strong, good stability, bitumen layer is thin, low engineering cost the advantages of, but, semi-rigid sub-base material is susceptible to temperature contracting, drying shrinkage
Crack, in load action bottom, slabbing is stitched gradually insertion bitumen layer and forms reflection crack, and the presence of reflection crack destroys road surface
Overall stress, and outside moisture is easier to enter road surface, accelerates pavement destruction process, and then influence semi-rigid type base asphalt road
The performance of face advantage, reduces service life of road surface.
Utility model content：
The purpose of this utility model is for above-mentioned problems of the prior art, there is provided one kind is applied to tunnel
With fire-retardant SBS pitches composite pavement structure, provide that structure is reliable, durability is strong for being directed to the poor tunnel of ventilation, make
With the guarantee of safety.
To reach above-mentioned purpose, the utility model uses following technical scheme：
One kind is applied to the fire-retardant SBS pitches composite pavement structure in tunnel, is included in roadbed top along near roadbed
Direction lay successively above layer 1, middle surface layer 2, cutting optimal 3, semi-rigid type base 4, underlayment 5, wherein：
The thickness of layer 4 is 5~8cm above described, and the thickness of middle surface layer 2 is 8~10cm, the thickness of cutting optimal 3 for 8~
12cm, the thickness of semi-rigid type base 4 is 35~40cm, the 15~20cm of thickness of underlayment 5.
Further, layer is using the modified AC-13 types asphalt layers of addition composite flame-retardant agent SBS, institute above described
, using AC-16 types asphalt layer, cutting optimal is using ATB-30 types Asphalt Stabilized Macadam layer for the middle surface layer stated.
Further, described semi-rigid type base is by the one kind in flyash stabilization soil or grey pellet, and lime this two
Plant the semi-rigid type base made by material.
Further, described underlayment to use that pour into cement in the large pored concrete matrix of open gradation be special slurry
The semi-flexible concrete of bluk recombination as tunnel road surface basic unit, there is provided the anti-shear performance on road surface, lifted bituminous paving
High-temperature stability, reduce the disease such as rut of tunnel sheet pavement.
The utility model has following technique effect：
1st, the actual conditions that the utility model is directed in tunnel are provided with special flame-retardant pitch layer, make for the region
The road surface brought with condition prevents road surface from burning occur to a certain extent when there is fire, so as to lift tunnel sheet pavement
Security performance；
2nd, do not allow to be also easy to produce crack and Moisture Damage under heavily loaded, rainy use condition, with service life more long；
3rd, asphalt pavement structure of the present utility model, due to using novel combined tunnel pavement structure, sufficiently make use of drip
The function of cyan layer and the carrying effect of continuous grading concrete base layer, with energy-conserving and environment-protective, bulk strength is high, pavement performance
It is good, the small Some features of long service life, maintenance cost.
In sum, the utility model is directed to the execution conditions and environment of freeway tunnel bituminous paving, using half
The good non-deformability of rigid base and anti-shear ability reduce the rut amount of SBS bituminous pavings, the warm mix flame-retardant SBS for using
Pitch farthest reduces the injury to people when fire incident can occur in tunnel, using continuous grading concrete base layer
The stability and bearing capacity of pavement structure are lifted, so that the significantly more efficient life-span for improving tunnel road surface and performance；This
The road structure of utility model integrally has stronger anti-rut behavior, makes pavement durability more preferably, when tunnel occurs fire
Preferably reduce the infringement of road pavement.
Brief description of the drawings：
Fig. 1 is overall structure diagram of the present utility model；
Label is represented in figure：1- upper layers, surface layer in 2-, 3- cutting optimals, 4- semi-rigid type bases, 5- underlayments, 6- roadbeds.
Specific embodiment：
The utility model is made further instructions below in conjunction with accompanying drawing.
As shown in figure 1, one kind that the utility model is provided is applied to the fire-retardant SBS pitches composite pavement structure in tunnel,
The top of roadbed 7 is included in along layer 1, middle surface layer 2, cutting optimal 3, semi-rigid type base above laying successively near the direction of roadbed 7
4th, underlayment 5；Wherein, the thickness of layer 1 is 5~8cm above described, and the thickness of middle surface layer 2 is 8~10cm, the thickness of cutting optimal 3
It is 8~12cm to spend, and the thickness of semi-rigid type base 4 is 35~40cm, and the thickness of underlayment 5 is 15~20cm.
In a preferred embodiment of the present utility model, upper layer 1 is using the modified AC-16 type asphalts of SBS
Layer, using AC-16 types asphalt layer, cutting optimal 3 is using ATB-30 types Asphalt Stabilized Macadam layer for described middle surface layer 2；
Pitch uses SBS bi tumenf orr oads in ATB-30 types Asphalt Stabilized Macadam layer, and its consumption is preferably than standard mix design quantity
Increase by 0.2% or so.In actually laying, the thickness of upper layer 1, middle surface layer 2 and cutting optimal 3 can increase or decrease 1~2cm.
Semi-rigid type base 4 by the one kind in flyash stabilization soil or grey pellet, and made by lime both materials.
Underlayment 5 is cement stabilized macadam base, is made up of cement and rubble, and cement, the mixture proportion of rubble are cement：
Rubble=6~8：90.
Claims (2)
1. it is a kind of to be applied to the fire-retardant SBS pitches composite pavement structure in tunnel, it is characterised in that to be included in roadbed (6) top
Along near roadbed direction lay successively above layer (1), middle surface layer (2), cutting optimal (3), semi-rigid type base (4), underlayment
(5)；Wherein,
The thickness of layer (1) is 5~8cm above described, and the thickness of middle surface layer (2) is 8~10cm, and the thickness of cutting optimal (3) is 8
~12cm, semi-rigid type base (4) thickness is 35~40cm, and the thickness of underlayment (5) is 15~20cm.
2. one kind according to claim 1 is applied to the fire-retardant SBS pitches composite pavement structure in tunnel, and its feature exists
In, it is described above layer (1) using the modified AC-16 types asphalt layers of SBS, described middle surface layer (2) is using the drip of AC-16 types
The green grass or young crops mixing bed of material, cutting optimal (3) is using ATB-30 types Asphalt Stabilized Macadam layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621161239.8U CN206245161U (en) | 2016-10-25 | 2016-10-25 | One kind is applied to the fire-retardant SBS pitches composite pavement structure in tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621161239.8U CN206245161U (en) | 2016-10-25 | 2016-10-25 | One kind is applied to the fire-retardant SBS pitches composite pavement structure in tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206245161U true CN206245161U (en) | 2017-06-13 |
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ID=58997006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621161239.8U Expired - Fee Related CN206245161U (en) | 2016-10-25 | 2016-10-25 | One kind is applied to the fire-retardant SBS pitches composite pavement structure in tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206245161U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714386A (en) * | 2019-11-11 | 2020-01-21 | 上海市市政规划设计研究院有限公司 | Long-life semi-flexible base pavement structure and construction method thereof |
| CN110714389A (en) * | 2019-11-11 | 2020-01-21 | 上海市市政规划设计研究院有限公司 | Ultrathin high-performance composite semi-flexible surface layer pavement structure and construction method thereof |
| CN113072326A (en) * | 2021-04-26 | 2021-07-06 | 河北省高速公路延崇管理中心 | Anti-cracking flame-retardant semi-flexible asphalt pavement material applied to cold region tunnel and method for preparing semi-flexible pavement by using same |
-
2016
- 2016-10-25 CN CN201621161239.8U patent/CN206245161U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714386A (en) * | 2019-11-11 | 2020-01-21 | 上海市市政规划设计研究院有限公司 | Long-life semi-flexible base pavement structure and construction method thereof |
| CN110714389A (en) * | 2019-11-11 | 2020-01-21 | 上海市市政规划设计研究院有限公司 | Ultrathin high-performance composite semi-flexible surface layer pavement structure and construction method thereof |
| CN113072326A (en) * | 2021-04-26 | 2021-07-06 | 河北省高速公路延崇管理中心 | Anti-cracking flame-retardant semi-flexible asphalt pavement material applied to cold region tunnel and method for preparing semi-flexible pavement by using same |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170613 Termination date: 20171025 |
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| CF01 | Termination of patent right due to non-payment of annual fee |