CN203668785U - Composite roadbed based on XPS (extruded polystyrene) insulation boards and ventilating pipes - Google Patents
Composite roadbed based on XPS (extruded polystyrene) insulation boards and ventilating pipes Download PDFInfo
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- CN203668785U CN203668785U CN201420016447.3U CN201420016447U CN203668785U CN 203668785 U CN203668785 U CN 203668785U CN 201420016447 U CN201420016447 U CN 201420016447U CN 203668785 U CN203668785 U CN 203668785U
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- embankment
- warming plate
- chimneys
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- xps warming
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Abstract
The utility model discloses a composite roadbed based on XPS (extruded polystyrene) insulation boards and ventilating pipes. The composite roadbed comprises an embankment constructed on a frozen soil foundation bed, wherein a plurality of ventilating pipes distributed on the same plane are embedded in the embankment; the plurality of ventilating pipes are distributed in the longitudinal extending direction of the embankment from front to back and parallel to the longitudinal extending direction of the embankment; the pipe diameter phi d of each ventilating pipe ranges from 0.5m to 1.0 m, and an interval between two adjacent ventilating pipes is a product of (2-3) and phi d; a layer of XPS insulation boards is paved on the inner side of the upper part of the embankment, and the XPS insulation boards are located above the plurality of ventilating pipes; and the thickness of each XPS insulation board ranges from 6 cm to 10 cm, and an interval between each XPS insulation board and the top surface of the embankment ranges from 0.5m to 1.0 m. The composite roadbed based on the XPS insulation boards and the ventilating pipes is simple in structure, reasonable in design, lower in investment cost, convenient to construct and good in use effect, the temperature of frozen soil under the roadbed can be effectively reduced, the upper limit of frozen soil is increased, and the stability of the frozen soil roadbed is improved.
Description
Technical field
The utility model relates to a kind of roadbed, especially relates to a kind of composite road bed based on XPS warming plate and air chimney.
Background technology
The current existing ever-frozen ground area of China accounts for 22.4% of area, many highway constructions, and such as Qinghai-Tibet Railway, Qinghai-Tibet Highway, 214 national highways etc. all face Frozen soil problems.Under the impact of global warming and human engineering activity, permafrost degradation is more and more serious, the frozen soil bearing capacity melting reduces greatly, and the corresponding road that brings out produces a series of subgrade defects such as inhomogeneous deformation, longitudinal cracking, wave, has a strong impact on subgrade stability.Therefore, resolving Frozen soil problems is the key that improves subgrade stability.
Research is found, the principal element that affects frozen earth stable is moisture and temperature, from reducing the angle of frozen soils temperature, raising frozen earth stable, researcher has proposed air chimney roadbed, has laid heat insulating material roadbed, has increased a series of engineering measures such as roadbed height.Wherein, air chimney roadbed be utilize dead season cold air and pipe in interchange of heat between hot air, tube wall reduce frozen soils temperature, the protection of permafrost under roadbed; But at warm season, the cross-ventilation of air chimney roadbed has adverse effect to protection of permafrost.Lay heat insulating material and can reduce heat and be delivered to frozen soil foundation, effectively protected frozen soil, however dead season heat insulating material equally also stoped the transmission of cold to ground, be unfavorable for the protection of frozen soil temperature.Improve roadbed height and can increase the thermal resistance that heat transmits, but elevated formation level is because Slopes effect has been brought out a large amount of roadbed longitudinal cracks, is having a strong impact on the stability of roadbed.To sum up, above-mentioned existing frozen earth roadbed safeguard measure all exist to some extent can not be to frozen earth roadbedly effectively protecting, the problem such as the less stable of institute's protection of permafrost roadbed.Therefore, under the serious background of climate warming, permafrost degradation, should be fully in conjunction with the pluses and minuses of multiple frozen earth roadbed safeguard measure, the engineering measure that propose effective protection of permafrost, improves subgrade stability.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, a kind of composite road bed based on XPS warming plate and air chimney is provided, it is simple in structure, reasonable in design, it is lower to drop into into and easy construction, result of use are good, can effectively reduce roadbed bottom frozen soils temperature, and lifting frozen soil upper limit, improve frozen earth roadbed stability.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of composite road bed based on XPS warming plate and air chimney, it is characterized in that: comprise the embankment filling on frozen soil foundation, in described embankment, be embedded with many air chimneys, many described air chimneys are all laid on same plane, and many described air chimneys are all parallel laying with frozen soil foundation; Many described air chimneys are all parallel laying, and many described air chimneys all lay from front to back along the longitudinal extension direction of embankment, and many described air chimneys are all vertical laying with the longitudinal extension direction of embankment; Described air chimney is pipe, and the structure of many described air chimneys and size be identical and its caliber Φ all
dbe 0.5m～1.0m, the spacing between the adjacent two described air chimneys in front and back is (2～3) × Φ
d; Described embankment upper inner is equipped with one deck XPS warming plate, and described XPS warming plate is parallel laying with many described air chimneys and it is positioned at many described air chimney tops; The thickness of slab of described XPS warming plate is 6cm～10cm, and the spacing of described XPS warming plate and embankment end face is 0.5m～1.0m.
Above-mentioned composite road bed based on XPS warming plate and air chimney, is characterized in that: many described air chimneys are even laying.
Above-mentioned composite road bed based on XPS warming plate and air chimney, is characterized in that: the height of described embankment is 4.0m～6.0m.
Above-mentioned composite road bed based on XPS warming plate and air chimney, is characterized in that: described XPS warming plate is spliced by multiple heat insulation boards, multiple described heat insulation boards are all laid on same plane.
Above-mentioned composite road bed based on XPS warming plate and air chimney, is characterized in that: between adjacent two described heat insulation boards, carry out seamless link by U-shaped pin.
Above-mentioned composite road bed based on XPS warming plate and air chimney, is characterized in that: the spacing of many described air chimneys and embankment end face is 2.0m～3.0m.
Above-mentioned composite road bed based on XPS warming plate and air chimney, is characterized in that: many described air chimneys are concrete pipe.
The utility model compared with prior art has the following advantages:
1, simple in structure, reasonable in design and easy construction, input cost is lower.
2, result of use is good and practical value is high, and air chimney and XPS warming plate are combined, and has given full play to advantage separately, reducing frozen soils temperature, keep frozen soil upper limit, improve the aspects such as subgrade stability and reached excellent effect.Dead season, utilize cold wind to enter air chimney and tube wall, inner air tube carry out interchange of heat, take away soil body heat, reduce the savings of roadbed heat, protection of permafrost effectively; Warm season, air chimney two ends are closed, and XPS warming plate is brought into play its good hot-resistant heat-preserving function, reduces heat and transmits in frozen soil foundation.Therefore, dead season, warm season frozen soil was all in the state of protection, and the stability of roadbed is significantly improved, and had avoided the generation of the multiple frozen soil diseases such as roadbed longitudinal crack, differential settlement, thaw collapse.
3, without any external impetus facility, pollution-free, can effectively preserve the ecological environment.Simultaneously, work progress is very little to the disturbance of frozen soil foundation, wherein air chimney is concrete pipe, can shift to an earlier date the prefabricated rear job site that directly transports to lays, XPS warming plate can be predetermined with producer in advance, transport to that job site is directly laid and do seamless link with U-shaped pin, above-mentioned work progress can not produce large artificial perturbation to frozen soil, meets the specific (special) requirements of Frozen Ground Area engineering stability.
4, popularizing application prospect is extensive, is easy to construction and safeguards, cooling-down effect and engineering stability are good, have good application prospect.
In sum; the utility model is simple in structure, reasonable in design, it is lower to drop into into and easy construction, result of use are good; in the situation that not increasing roadbed height; by air chimney and XPS warming plate duplicate protection; effectively reduce roadbed bottom frozen soils temperature; and lifting frozen soil upper limit, improve frozen earth roadbed stability, and reach protection of permafrost, stable road bed object.Thereby the utility model, from dead season, warm season two aspects, by XPS warming plate and air chimney reasonable combination, can reduce roadbed bottom frozen soils temperature effectively, lifting frozen soil upper limit, and improve frozen earth roadbed stability, effectively prevent the generation of frozen soil disease.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Description of reference numerals:
1-embankment; 2-air chimney; 3-XPS warming plate;
4-frozen soil foundation.
The specific embodiment
As shown in Figure 1, the utility model comprises the embankment 1 filling on frozen soil foundation 4, in described embankment 1, is embedded with many air chimneys 2, and many described air chimneys 2 are all laid on same plane, and many described air chimneys 2 are all parallel laying with frozen soil foundation 4.Many described air chimneys 2 are all parallel laying, and many described air chimneys 2 all lay from front to back along the longitudinal extension direction of embankment 1, and many described air chimneys 2 are all vertical laying with the longitudinal extension direction of embankment 1.Described air chimney 2 is pipe, and the structure of many described air chimneys 2 and size be identical and its caliber Φ all
dbe 0.5m～1.0m, the spacing between the adjacent two described air chimneys 2 in front and back is (2～3) × Φ
d.Described embankment 1 upper inner is equipped with one deck XPS warming plate 3, and described XPS warming plate 3 is parallel laying with many described air chimneys 2 and it is positioned at many described air chimney 2 tops.The thickness of slab of described XPS warming plate 3 is 6cm～10cm, and described XPS warming plate 3 is 0.5m～1.0m with the spacing of embankment 1 end face.
In the present embodiment, many described air chimneys 2 are even laying.
When practice of construction, can according to specific needs, the spacing between the adjacent two described air chimneys 2 in front and back be adjusted accordingly.
In the present embodiment, the height of described embankment 1 is 4.0m～6.0m.
Described XPS warming plate 3 is spliced by multiple heat insulation boards, and multiple described heat insulation boards are all laid on same plane.In the present embodiment, between adjacent two described heat insulation boards, carry out seamless link by U-shaped pin.
In the present embodiment, many described air chimneys 2 are 2.0m～3.0m with the spacing of embankment 1 end face.And many described air chimneys 2 are concrete pipe.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every any simple modification of above embodiment being done according to the utility model technical spirit, change and equivalent structure change, and all still belong in the protection domain of technical solutions of the utility model.
Claims (7)
1. composite road bed based on XPS warming plate and air chimney, it is characterized in that: comprise the embankment (1) filling on frozen soil foundation (4), in described embankment (1), be embedded with many air chimneys (2), many described air chimneys (2) are all laid on same plane, and many described air chimneys (2) are all parallel laying with frozen soil foundation (4); Many described air chimneys (2) are all parallel laying, and many described air chimneys (2) all lay from front to back along the longitudinal extension direction of embankment (1), and many described air chimneys (2) are all vertical laying with the longitudinal extension direction of embankment (1); Described air chimney (2) is pipe, and the structure of many described air chimneys (2) and size be identical and its caliber Φ all
dbe 0.5m～1.0m, the spacing between the adjacent two described air chimneys in front and back (2) is (2～3) × Φ
d; Described embankment (1) upper inner is equipped with one deck XPS warming plate (3), and described XPS warming plate (3) is parallel laying with many described air chimneys (2) and it is positioned at many described air chimneys (2) top; The thickness of slab of described XPS warming plate (3) is 6cm～10cm, and described XPS warming plate (3) is 0.5m～1.0m with the spacing of embankment (1) end face.
2. according to composite road bed based on XPS warming plate and air chimney claimed in claim 1, it is characterized in that: many described air chimneys (2) are even laying.
3. according to composite road bed based on XPS warming plate and air chimney described in claim 1 or 2, it is characterized in that: the height of described embankment (1) is 4.0m～6.0m.
4. according to composite road bed based on XPS warming plate and air chimney described in claim 1 or 2, it is characterized in that: described XPS warming plate (3) is spliced by multiple heat insulation boards, multiple described heat insulation boards are all laid on same plane.
5. according to composite road bed based on XPS warming plate and air chimney claimed in claim 4, it is characterized in that: between adjacent two described heat insulation boards, carry out seamless link by U-shaped pin.
6. according to composite road bed based on XPS warming plate and air chimney described in claim 1 or 2, it is characterized in that: many described air chimneys (2) are 2.0m～3.0m with the spacing of embankment (1) end face.
7. according to composite road bed based on XPS warming plate and air chimney described in claim 1 or 2, it is characterized in that: many described air chimneys (2) are concrete pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420016447.3U CN203668785U (en) | 2014-01-10 | 2014-01-10 | Composite roadbed based on XPS (extruded polystyrene) insulation boards and ventilating pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420016447.3U CN203668785U (en) | 2014-01-10 | 2014-01-10 | Composite roadbed based on XPS (extruded polystyrene) insulation boards and ventilating pipes |
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| Publication Number | Publication Date |
|---|---|
| CN203668785U true CN203668785U (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420016447.3U Expired - Fee Related CN203668785U (en) | 2014-01-10 | 2014-01-10 | Composite roadbed based on XPS (extruded polystyrene) insulation boards and ventilating pipes |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107201709A (en) * | 2016-03-17 | 2017-09-26 | 中国科学院寒区旱区环境与工程研究所 | A kind of roadbed of overall balanced cooling cold-storage |
| CN107201702A (en) * | 2016-03-17 | 2017-09-26 | 中国科学院寒区旱区环境与工程研究所 | Convection current regulates and controls the ventilated formula frozen soil ventilation embankment of full wall |
| US11987937B1 (en) | 2023-01-17 | 2024-05-21 | Northwest Institute Of Eco-Environment And Resources, Chinese Academy Of Sciences | Airflow-enhanced embankment ventilation structure, composite embankment structure, and construction method thereof |
-
2014
- 2014-01-10 CN CN201420016447.3U patent/CN203668785U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107201709A (en) * | 2016-03-17 | 2017-09-26 | 中国科学院寒区旱区环境与工程研究所 | A kind of roadbed of overall balanced cooling cold-storage |
| CN107201702A (en) * | 2016-03-17 | 2017-09-26 | 中国科学院寒区旱区环境与工程研究所 | Convection current regulates and controls the ventilated formula frozen soil ventilation embankment of full wall |
| US11987937B1 (en) | 2023-01-17 | 2024-05-21 | Northwest Institute Of Eco-Environment And Resources, Chinese Academy Of Sciences | Airflow-enhanced embankment ventilation structure, composite embankment structure, and construction method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20150110 |
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| EXPY | Termination of patent right or utility model |