CN208328584U - A kind of extremely frigid zones highway subgrade structure - Google Patents
A kind of extremely frigid zones highway subgrade structure Download PDFInfo
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- CN208328584U CN208328584U CN201821003044.XU CN201821003044U CN208328584U CN 208328584 U CN208328584 U CN 208328584U CN 201821003044 U CN201821003044 U CN 201821003044U CN 208328584 U CN208328584 U CN 208328584U
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Abstract
The utility model relates to a kind of extremely frigid zones highway subgrade structures, it is trapezoidal roadbed ontology including whole longitudinal section, it is characterized by: roadbed ontology successively includes packing layer from bottom to up, Slag Layer, pipe-massive stone layer, aluminium foil layer, heat transferring layer, geotextile layer, embankment filled soil layer and supercrust, wherein the longitudinal section of pipe-massive stone layer is H-shaped structure, packing layer and Slag Layer are arranged in the bottom opening of H-shaped structure of pipe-massive stone layer, aluminium foil layer, heat transferring layer, geotextile layer, embankment filled soil layer and supercrust are arranged in the upper opening of H-shaped structure of pipe-massive stone layer, road shoulder is both provided with the junction of supercrust at left and right sides of the top of the pipe-massive stone layer of H-shaped structure, road shoulder is road brick or aggregate structure floor with air-permeable structure.Entirety improves cooling effect, roadbed intrinsic cryogenic freezing effect when increasing winter significantly, and prevents heat from entering inside in summer, overcomes the frozen soil disease of extremely frigid zones.
Description
Technical field
The utility model relates to the technical field of construction of the highway, especially a kind of extremely frigid zones highway subgrade structure.
Background technique
With present economic construction and people's daily life demand, China is constantly expanding and is improving traffic always in recent years
Network construction.And China territory is vast in territory, south and north, east and west span is very big, and geology and climatic issues are widely different, in the network of communication lines
There are many problems in network construction belongs to high latitude at the top of China Qinghai-Tibet Platean and the big Xiaoxinanlin Mountains, some high mountains of the western and eastern
Degree, extremely frigid zones, the soil moisture are equal to or less than zero degrees celsius for a long time, and also contain some solid ices in soil, this is just
It is so-called frozen soil.Frozen soil is a kind of temperature sensitivity soil body, inevitably encounters soil layer in engineering in permafrost regions construction
Freeze, do not freeze, freezing, melting and melt state not etc..Even if big material composition and water content etc. are protected
Hold it is constant, permafrost region foundation soil also will than melt zone have significant changeability and complexity.
In the prior art, when Permafrost Area carries out roadbed filling, active safeguard measure can be used and passive protection is arranged
Apply protection ever-frozen ground.Active safeguard measure can raise frozen soil upper limit, be in ground always and stablize frozen state, but its cost
Cost is too high；Passive Insulation theoretically increases the thermal resistance that earth's surface heat enters permafrost, can delay ever-frozen ground
Thawing, but while raising the upper limit, the frozen soils temperature that underlies also generally is increased, and there is heat accumulations under insulation construction, therefore
It is ineffective, therefore not can solve frozen soil disease problem still for independent active safeguard measure or passive protection measure.
Utility model content
The purpose of the utility model is to provide a kind of structure is simple, rationally, what is overcome the shortage of prior art is a kind of high for design
Cold local highway road structure.
To achieve the goals above, the technological means that the utility model is taken is:
A kind of extremely frigid zones highway subgrade structure is trapezoidal roadbed ontology including whole longitudinal section, according to being: roadbed
Ontology is successively filled out including packing layer, Slag Layer, pipe-massive stone layer, geotextile layer, aluminium foil layer, thermal resistance transfer layer, embankment from bottom to up
Soil layer and supercrust, wherein the longitudinal section of pipe-massive stone layer is H-shaped structure, and the H-shaped of pipe-massive stone layer is arranged in packing layer and Slag Layer
In the bottom opening of structure, geotextile layer, aluminium foil layer, thermal resistance transfer layer, embankment filled soil layer and supercrust are arranged in pipe-massive stone layer
H-shaped structure upper opening in, be all arranged at left and right sides of the top of the pipe-massive stone layer of H-shaped structure with the junction of supercrust
There is road shoulder, road shoulder is road brick or aggregate structure floor with air-permeable structure.
It further include the concrete landslide-proofing layer for being separately positioned on trapezium structure left and right sides, in concrete landslide-proofing layer
Outside is provided with buffer protection layer.
The buffer protection layer is artificial vegetable layer.
It further include the gutter that one side bottom of roadbed ontology is set.
It further include the hot pin being embedded in below roadbed ontology.
The beneficial effects of the utility model are: due to the pipe-massive stone layer for being provided with H-shaped in roadbed ontology, so that roadbed sheet
The heat exchange structure for foring half cycle formula in vivo, increases whole cooling effect, and has been laid with aluminium foil layer and thermal resistance biography
Layer is passed, the cooling effect of roadbed ontology is further improved, overcomes the frozen soil disease of extremely frigid zones.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
The utility model is described further in the following with reference to the drawings and specific embodiments.
Specific embodiment, as shown in Figure 1, a kind of extremely frigid zones highway subgrade structure, is trapezoidal including whole longitudinal section
Roadbed ontology, roadbed ontology from bottom to up successively include packing layer 1, Slag Layer 2, pipe-massive stone layer 3, geotextile layer 4, aluminium foil layer 5,
Thermal resistance transfer layer 6, embankment filled soil layer 7 and supercrust 8, wherein the longitudinal section of pipe-massive stone layer 3 is H-shaped structure, packing layer 1 and steel slag
Layer 2 is arranged in the bottom opening of H-shaped structure of pipe-massive stone layer 3, and geotextile layer 4, aluminium foil layer 5, thermal resistance transfer layer 6, embankment are filled out
Soil layer 7 and supercrust 8 are arranged in the upper opening of H-shaped structure of pipe-massive stone layer 3, at the top of the pipe-massive stone layer 3 of H-shaped structure
The left and right sides and the junction of supercrust 8 are both provided with road shoulder 9, and road shoulder 9 is road brick or aggregate structure with air-permeable structure
Layer.
It further include the concrete landslide-proofing layer 10 for being separately positioned on trapezium structure left and right sides, in concrete landslide-proofing layer
10 outside is provided with buffer protection layer 11, and concrete landslide-proofing layer 10 uses C25 concrete, finally adds and draw in extremely frigid zones
Gas agent prevents concrete frost heave, and the buffer protection layer 11 is artificial vegetable layer, in order to prevent the full water of the filler of packing layer 1,
When roadbed ontology is in infiltration environment, one side bottom of roadbed ontology is provided with gutter 12, water is drawn, in order into one
Step improves cooling effect, and hot pin 13 is also embedded with below roadbed ontology.
The construction method of the utility model, comprising the following steps:
The first step, in-site measurement determine range of banketing；
Second step, the cleaning of roadbed substrate, compacting；
Third step, 1 filler of packing layer, the filler of packing layer 1 is transported in roadbed matrix, and packing layer filler includes lime,
Above-mentioned raw materials are poured into stirrer for mixing and stirred evenly, filled out by flyash, ardealite, waterglass, modified acrylic acid emulsion
Bed of material filler；
4th step, packing layer 1 pave, and the filler level land of packing layer 1 is paved, every side extra-fill 300mm or more, and make roadbed
Every side retains at least gap of 20cm at left and right sides of base bottom；
5th step detects loose laying depth and water content, makes loose laying depth 500-800mm, water content in best aqueous model
Within enclosing；
6th step, packing layer 1 are compacted, and using road roller pressing to desired compactness, are compacted using 25-30 tons of dynamic road rollers
6-8 times, and the index according to construction reference detection compactness and water content repeats third step to the 6th step, such as if unqualified
Fruit qualification carries out in next step；
The filler of Slag Layer 2 is transported in the roadbed matrix of the 6th step qualification, Slag Layer 2 by the 7th step, 2 filler of Slag Layer
Steel slag partial size be less than 15mm；
8th step, Slag Layer 2 pave, and the filler level land of Slag Layer 2 is paved, and every side extra-fill 300mm or more and compare filler
The every narrow 10cm in side of layer, and every side at left and right sides of roadbed base bottom is made to retain at least gap of 20cm；
9th step detects loose laying depth, makes loose laying depth 500-800mm；
Tenth step, Slag Layer 2 are compacted, and using road roller pressing to desired compactness, are compacted using 25-30 tons of dynamic road rollers
6-8 times, and the index according to construction reference detection compactness repeats the 7th step to the tenth step if unqualified, if it is qualified into
Row is in next step；
3 filler of pipe-massive stone layer is transported in roadbed matrix by the 11st step, 3 filler of pipe-massive stone layer, 3 filler of pipe-massive stone layer
Partial size is 10-30cm；
12nd step, pipe-massive stone layer 3 pave, and 3 filler of pipe-massive stone layer is paved with the bottom that packing layer 1 and Slag Layer 2 retain
Gap forms trapezium structure, and the thickness of pipe-massive stone layer 3 is made to be at least 80cm；
13rd step spreads geotextile layer 4, by geotextile laying in the upper surface of pipe-massive stone layer 3；
14th step spreads aluminium foil layer 5, aluminium foil is laid on to the upper surface of geotextile layer 4；
15th step, 3 side of pipe-massive stone layer are piled up, by 3 filler of pipe-massive stone layer 5 upper surface of aluminium foil layer each side
The side for being laid at least 20cm thickness forms groove structure, and the height of groove structure is 10mm, make left and right sides pipe-massive stone layer 3 it
Between spacing it is 20-50cm smaller than the width of Slag Layer 2；
The filler of thermal resistance transfer layer 6 is transported to the recessed of 3 filler of pipe-massive stone layer formation by the 16th step, 6 filler of thermal resistance transfer layer
In slot structure, the filler of thermal resistance transfer layer 6 is polystyrene (EPS), polyurethane (PU), one in injection molding polystyrene (XPS)
Kind, it waits until that thermal resistance transfer layer 6 solidifies, the thickness of thermal resistance transfer layer 6 is made to reach 2-5mm；
17th step, 3 side of pipe-massive stone layer are piled up, by 3 filler of pipe-massive stone layer 6 upper surface of thermal resistance transfer layer left and right two
The side that side is respectively laid at least 20cm thickness forms groove structure, and the height of groove structure is 160-200cm, makes left and right sides block
The small 20cm of width of spacing resistivity heat transferring layer 6 between metalling 3；
The sandy soil filler of embankment filled soil layer 7 is transported to block rubble in roadbed matrix by the 18th step, 7 filler of embankment filled soil layer
In the groove structure that 3 filler of layer are formed, due to forming what every slice width degree gradually decreased to embankment filled soil layer 7 since packing layer 1
Structure, so that up-small and down-big H-shaped structure is integrally formed in pipe-massive stone layer 3；
19th step, embankment filled soil layer 7 pave, and the sandy soil filler level land of embankment filled soil layer 7 is paved；
20th step detects loose laying depth, makes loose laying depth 150-180cm；
21st step, embankment filled soil layer 7 are compacted, using road roller pressing to desired compactness, using 25-30 tons of dynamic pressures
Road machine is compacted 8-10 times, and the index according to construction reference detection compactness repeats the 18th step to the 20th if unqualified
One step, if qualified carry out in next step；
22nd step, supercrust 8 are laid with, and the laying of supercrust 8 is carried out using paving machine, and make the width of supercrust 8
Not less than the width of embankment filled soil layer 7；
23rd step, road shoulder 9 are laid with, using with air-permeable structure road brick or aggregate structure floor road shoulder 9 is laid with
It finishes；
24th step, detection is qualified, detects the indices of whole road structure, and detection qualification, which can be completed, hands over.
It further include attached subsequent construction, attached subsequent construction includes that concrete landslide-proofing layer 10 and buffering protective layer 11 are applied
Work, after roadbed ontology is handed over, using concreting concrete landslide-proofing layer 10, when concrete landslide-proofing layer 10 solidifies
Afterwards, implant tegillum is laid with as buffer protection layer 11 in the outside of concrete landslide-proofing layer 10, basic body of not only satisfying the need provides
Protection also improves whole landscape effect, excavates gutter 12, prevents rainwater accumulation from penetrating into roadbed body interior damage
Bad roadbed ontology is embedded with hot pin 13 to further increase whole cooling effect below roadbed ontology, in hot pin 13
The different times can play good heat transfer effect to liquid ammonia with summer in winter.
In use, aluminium foil layer 5 can accelerate the intrinsic thermal cycle of roadbed, thermal resistance transfer layer 6 to the utility model
Heat can be prevented directly to be lost to outside from embankment filled soil layer 7 or directly enter in roadbed ontology from embankment filled soil layer 7, due to
Pipe-massive stone layer 3 forms the structure that longitudinal section is H-shaped, and road shoulder 9 can will be warm after there is gas permeability, road shoulder 9 to be combined with pipe-massive stone layer 3
Amount circulates in the pipe-massive stone layer 3 of H-shaped and recycles, and forms the heat transfer structure of half cycle, substantially increases the drop of roadbed ontology
There is roadbed body interior temperature lower than external temperature, there is no thermal current uplink, air after summer temp increases in temp effect
It in opposing stationary state, prevents extraneous hot-air from entering roadbed body interior, avoids summer temperature raising and freeze
The phenomenon that soil ablation, the frozen soil of lower layer is made also to be always maintained at low temperature in summer；After winter temperature reduces, occur in roadbed ontology
Portion's temperature is higher than external temperature, the case where thermal current uplink occurs, so that the heat loss situation of roadbed ontology entirety increases, makes
The bulk temperature for obtaining roadbed ontology reduces, and due to the half cycle mode of H-shaped structure, integrally improves cooling effect, increases significantly
Roadbed intrinsic cryogenic freezing effect when winter, and prevent heat from entering inside in summer, overcome the jelly of extremely frigid zones
Native disease.
Claims (5)
1. a kind of extremely frigid zones highway subgrade structure is trapezoidal roadbed ontology including whole longitudinal section, it is characterised in that: roadbed
Ontology successively includes packing layer (1), Slag Layer (2), pipe-massive stone layer (3), geotextile layer (4), aluminium foil layer (5), resistance from bottom to up
Heat transferring layer (6), embankment filled soil layer (7) and supercrust (8), wherein the longitudinal section of pipe-massive stone layer (3) is H-shaped structure, packing layer
(1) it is arranged in the bottom opening of the H-shaped structure of pipe-massive stone layer (3) with Slag Layer (2), geotextile layer (4), aluminium foil layer (5), resistance
Heat transferring layer (6), embankment filled soil layer (7) and supercrust (8) are arranged in the upper opening of the H-shaped structure of pipe-massive stone layer (3),
Junction at left and right sides of the top of the pipe-massive stone layer (3) of H-shaped structure with supercrust (8) is both provided with road shoulder (9), road shoulder (9)
For road brick or aggregate structure floor with air-permeable structure.
2. a kind of extremely frigid zones highway subgrade structure according to claim 1, it is characterised in that: further include being separately positioned on
The concrete landslide-proofing layer (10) of trapezium structure left and right sides is provided with buffering on the outside of concrete landslide-proofing layer (10) and protects
Sheath (11).
3. a kind of extremely frigid zones highway subgrade structure according to claim 2, it is characterised in that: the buffer protection layer
It (11) is artificial vegetable layer.
4. a kind of extremely frigid zones highway subgrade structure according to claim 1, it is characterised in that: further include being arranged in roadbed
The gutter (12) of one side bottom of ontology.
5. a kind of extremely frigid zones highway subgrade structure according to claim 1, it is characterised in that: further include being embedded in roadbed
Hot pin (13) below ontology.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821003044.XU CN208328584U (en) | 2018-06-27 | 2018-06-27 | A kind of extremely frigid zones highway subgrade structure |
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| CN201821003044.XU CN208328584U (en) | 2018-06-27 | 2018-06-27 | A kind of extremely frigid zones highway subgrade structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677639A (en) * | 2018-06-27 | 2018-10-19 | 中铁十九局集团第六工程有限公司 | A kind of extremely frigid zones highway subgrade structure and construction method |
| CN111945485A (en) * | 2020-08-12 | 2020-11-17 | 中铁八局集团第二工程有限公司 | High-speed railway roadbed with vibration damping and freezing prevention functions |
-
2018
- 2018-06-27 CN CN201821003044.XU patent/CN208328584U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677639A (en) * | 2018-06-27 | 2018-10-19 | 中铁十九局集团第六工程有限公司 | A kind of extremely frigid zones highway subgrade structure and construction method |
| CN108677639B (en) * | 2018-06-27 | 2024-04-02 | 中铁十九局集团第六工程有限公司 | Highway subgrade structure in alpine region and construction method |
| CN111945485A (en) * | 2020-08-12 | 2020-11-17 | 中铁八局集团第二工程有限公司 | High-speed railway roadbed with vibration damping and freezing prevention functions |
| CN111945485B (en) * | 2020-08-12 | 2022-10-21 | 中铁八局集团第二工程有限公司 | High-speed railway roadbed with vibration damping and freezing prevention functions |
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