CN110565466B - Cooling structure of freeway roadbed slope in permafrost region - Google Patents
Cooling structure of freeway roadbed slope in permafrost region Download PDFInfo
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- CN110565466B CN110565466B CN201910880535.5A CN201910880535A CN110565466B CN 110565466 B CN110565466 B CN 110565466B CN 201910880535 A CN201910880535 A CN 201910880535A CN 110565466 B CN110565466 B CN 110565466B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/06—Methods or arrangements for protecting foundations from destructive influences of moisture, frost or vibration
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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Abstract
The invention belongs to the technical field of roadbed cooling structures, and particularly relates to a cooling structure for a roadbed slope of a highway in a permafrost region, wherein heat conducting fins are uniformly laid on the surface of the roadbed slope, shielding plates are fixed on the outer walls of the heat conducting fins, which are positioned on the roadbed slope, through bolts, heat synchronization plates are placed on the inner sides of the shielding plates, and cooling fins are uniformly fixed on the inner sides of the heat synchronization plates through welding; equipment passes through the heat synchronization board with heat direction to fin, the air is discharged the heat from the circulation of fin department, the heat exchange tube, the inside heat transfer liquid of shunt tubes can the heat absorption gasification, and with heat direction to the conducting strip, lead to the fin through the conducting strip, the cooling tube is inside to let in the air, the air passes through the cooling tube, the shower nozzle is discharged, make the air flow rate of fin side accelerate, this cooling structure can effectually accelerate the heat exchange of many years frozen soil district highway side slope road bed, reduce the influence that negative and positive slope effect caused, keep the thermal stability of many years frozen soil, thereby guarantee highway's normal operating.
Description
Technical Field
The invention belongs to the technical field of roadbed cooling structures, and particularly relates to a cooling structure for a freeway roadbed slope in a permafrost region.
Background
The ice-water cooling system is characterized in that the abdominal land of the Qinghai province of the Qinghai Tibet plateau occupies 45 kilometres square in permafrost region in the Qinghai province, occupies 62.5 percent of the total area of the Qinghai province, occupies more than 1/3 percent of the permafrost area of the Qinghai Tibet plateau, and has the characteristics of high ground temperature, thin thickness, large ice content, poor thermal stability, extreme sensitivity to environmental disturbance and climate warming and the like. After the linear roadbed engineering in the permafrost region at high altitude is built, the slope surfaces on the two sides form artificial slope differences in different directions. Due to different heat exchange conditions between the earth surface and the atmosphere, such as solar radiation, earth surface turbulence and the like on two sides of the side slope, the difference of temperature fields of the two slope surfaces is obviously enhanced, namely the effect of yin and yang slope.
Uneven settlement of the roadbed and cracks of the roadbed caused by the yin-yang slope effect become fatal diseases threatening the safe operation of the frozen soil roadbed, and urgent research and solution are needed. Taking the existing Qinghai-Tibet railway and highway subgrade as examples, the subgrade is generally from the northeast to the southwest, the east side slope (sunny slope) receives stronger solar radiation and longer duration than the west side slope (cloudy slope), and the temperature of the sunny slope is higher than that of the cloudy slope. In a frozen soil area with good engineering geology, the traditional method for passively protecting permafrost is mainly a method of raising the height of a roadbed and increasing thermal resistance. Although the method raises the permafrost upper limit to a certain extent, the increase of the height of the roadbed inevitably increases the area of the slope surfaces at two sides, so that the solar radiation receiving surface is increased, the thermal difference of the yin-yang slope surfaces is aggravated, the asymmetry of the yin-yang slope temperature field is caused, and the difference of the melting depths of two sides of the roadbed in the transverse direction is formed. This effect not only causes the asymmetrical settlement of the roadbed in the transverse direction, but also causes the longitudinal cracks in the roadbed soil body when the stress generated by the uneven settlement is greater than the tensile strength of the soil body.
Compared with the common highway, the highway has the characteristics of wide roadbed width, strong engineering disturbance and the like, absorbed heat is difficult to diffuse to surrounding frozen soil and atmospheric environment, so that the roadbed is more difficult to radiate heat, the more obvious heat accumulation effect is realized, the frozen soil is rapidly degraded, and the thermal effect between the highway and the frozen soil is more obvious in the face of higher technical standard. Constructing highways in permafrost areas will face more prominent permafrost problems and technical construction problems, which will lead to more significant freeze-thaw disaster problems.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a cooling structure for a highway subgrade side slope in a permafrost region, which has the characteristic of effectively cooling the subgrade side slope.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a cooling structure of permafrost region highway subgrade side slope, includes the subgrade side slope, the conducting strip has evenly been laid on the surface of subgrade side slope, the outer wall that the outside of conducting strip is located the subgrade side slope has the shielding plate through the bolt fastening, the synchronous board of heat has been placed to the inboard of shielding plate, the inboard of the synchronous board of heat evenly is fixed with the fin through the welding, the heat exchange tube has been placed to the even gomphosis in the inside that one side that the conducting strip is different in the fin is located the subgrade side slope, the bottom side surface of heat exchange tube is equipped with the shunt tubes through the welding, heat transfer liquid has been placed to the inside of shunt tubes, the top of conducting strip is located the upper surface frame of subgra.
According to the preferable technical scheme of the cooling structure of the highway subgrade side slope in the permafrost region, the cooling assembly comprises the cooling pipe, the cooling pipe is fixed on the side surface of the subgrade side slope through the U-shaped bolt, and the spray heads are uniformly distributed on the side surface of the cooling pipe.
According to the preferable technical scheme of the cooling structure for the roadbed slope of the highway in the permafrost region, the heat synchronization plate is a rectangular sheet-shaped component, the two ends of the radiating fin are fixedly provided with the heat synchronization plate through welding, and the heat synchronization plate below the radiating fin is in contact with the outer side surface of the heat conducting fin.
As the preferable technical scheme of the cooling structure for the roadbed slope of the highway in the permafrost region, the heat conducting fins are net-shaped assemblies formed by weaving two strip-shaped components in a staggered mode, and the top ends of the heat exchange tubes are in contact with the crossed parts of the heat conducting fins.
According to the preferable technical scheme of the cooling structure of the expressway subgrade side slope in the permafrost region, radiating fins, shielding plates and heat synchronization plates are uniformly distributed on the outer side surface of the subgrade side slope, the radiating fins are S-shaped sheet members, and the heat synchronization plates are rubber members.
As the preferable technical scheme of the cooling structure for the expressway subgrade side slope in the permafrost region, the upper surface of the heat-conducting fin protrudes 1CM out of the side surface of the subgrade side slope.
As the preferable technical scheme of the cooling structure for the roadbed slope of the highway in the permafrost region, the heat exchange tube and the shunt tubes are hollow tubular members, the four shunt tubes are uniformly distributed on the same horizontal plane at the bottom end of the heat exchange tube, and the bottom end of each shunt tube and the bottom end of the heat exchange tube keep an inclination angle of 30 degrees.
Compared with the prior art, the invention has the beneficial effects that: the conducting strip carries out the water conservancy diversion to the heat of road bed side slope in the cooling structure use, the conducting strip contacts with the synchronous board of heat, through the synchronous board of heat with heat direction to fin, the air is discharged the heat from the circulation of fin department, the heat exchange tube, the inside heat transfer liquid of shunt tubes can the heat absorption gasification, and lead the heat to the conducting strip, lead to the fin through the conducting strip, the inside air that can let in of cooling tube, the air passes through the cooling tube, the shower nozzle discharges, make the air flow rate of fin side accelerate, this cooling structure can effectual reduction road bed side slope side surface's stability, avoid frozen soil to soften, promote road bed stability ability.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic view of a heat sink structure according to the present invention;
FIG. 4 is a schematic top view of the heat exchange tube of the present invention;
FIG. 5 is a schematic cross-sectional view of a heat exchange tube according to the present invention;
in the figure: 1. a roadbed slope; 2. a cooling pipe; 3. a spray head; 4. a heat conductive sheet; 5. a heat sink; 6. a shielding plate; 7. a heat exchange pipe; 8. a shunt tube; 9. a heat synchronization plate; 10. a heat exchange liquid.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1-5, the present invention provides the following technical solutions: the utility model provides a cooling structure of permafrost region highway subgrade side slope, including subgrade side slope 1, conducting strip 4 has evenly been laid on the surface of subgrade side slope 1, the outer wall that the outside of conducting strip 4 is located subgrade side slope 1 has shielding plate 6 through the bolt fastening, heat synchronization board 9 has been placed to shielding plate 6's inboard, heat synchronization board 9's inboard is evenly fixed with fin 5 through the welding, heat exchange tube 7 has been placed to the even gomphosis in the inside that one side that conducting strip 4 is different from fin 5 is located subgrade side slope 1, heat exchange tube 7 takes out the heat of subgrade side slope 1 inside out, the bottom side surface of heat exchange tube 7 is equipped with shunt tubes 8 through the welding, heat transfer liquid 10 has been placed to shunt tubes 8's inside, heat transfer liquid 10 adopts liquid ammonia, the top that conducting strip 4 is located subgrade side slope 1's upper surface frame and is equipped with cooling module, in this embodiment, cooling module is.
Because the side slope of the roadbed side slope 1 is divided into a sunny side and a sunny side, the sunny side is a sunny slope, and the sunny side is a cloudy slope, the quantity, the number and the burial depth of the heat exchange tubes 7 and the shunt tubes 8 in the sunny slope are all larger than those of the heat exchange tubes 7 and the shunt tubes 8 in the cloudy slope.
In the technical scheme, the inclination angle of the heat exchange tube 7 is 15 degrees inclined with the horizontal plane.
Specifically, cooling unit includes cooling tube 2, and cooling tube 2 passes through U nature bolt fastening at the side surface of subgrade side slope 1, and shower nozzle 3 has evenly arranged on cooling tube 2's side surface, and cooling tube 2's inside both can let in gas and also can let in liquid in this embodiment, and gas, liquid all can dispel the heat to the side surface of subgrade side slope 1, avoid the overheated side surface of subgrade side slope 1.
Specifically, the heat synchronization plate 9 is a rectangular sheet member, the heat synchronization plate 9 is fixed to both ends of the heat dissipation plate 5 by welding, the heat synchronization plate 9 below the heat dissipation plate 5 is in surface contact with the outer side of the heat conduction fin 4, and the heat synchronization plate 9 facilitates heat transmission in this embodiment.
Specifically, the conducting strip 4 is a net-shaped component formed by weaving two strip-shaped components in a staggered manner, the top end of the heat exchange tube 7 is in contact with the cross part of the conducting strip 4, and the net-shaped component enables the conducting strip 4 to conduct heat on the side surface of the roadbed slope 1 to the radiating fins 5.
Specifically, the radiating fins 5, the shielding plates 6 and the heat synchronization plates 9 are uniformly distributed on the outer side surface of the roadbed slope 1, the radiating fins 5 are S-shaped sheet members, the heat synchronization plates 9 are rubber members, the rubber members prevent the heat synchronization plates 9 from absorbing too much heat under the irradiation of the sun in the embodiment, and the S-shaped structures of the radiating fins 5 can slow down the wind power circulation rate, so that the heat exchange between the airflow and the radiating fins 5 is facilitated.
Specifically, the upper surface of conducting strip 4 is than the side surface protrusion 1CM of road bed side slope 1, and the protruding structure of conducting strip 4 can be held back water when 3 water sprays of shower nozzle in this embodiment, slows down the trickling speed of water, and the heat exchange is carried out with the side surface of road bed side slope 1 to this is cooled down the side surface of road bed side slope 1.
Specifically, heat exchange tube 7 and shunt tubes 8 are hollow tubular components, four shunt tubes 8 have evenly been arranged in the same horizontal plane in the bottom of heat exchange tube 7, and the bottom of every shunt tube 8 all keeps 30 angles of inclination with the bottom of heat exchange tube 7, and heat exchange tube 7 and shunt tubes 8 can take out the inside heat of road bed side slope 1 in this embodiment, avoid the inside softening of road bed side slope 1 to lead to the difficulty of driving a vehicle.
The working principle and the using process of the invention are as follows: in the invention, the heat conducting fins 4 conduct the heat of the roadbed slope 1 in the using process of the device, the heat conducting fins 4 are contacted with the heat synchronous plate 9, the heat is guided to the radiating fins 5 through the heat synchronous plate 9, the air circulates from the radiating fins 5 to discharge the heat, the heat exchange liquid 10 in the heat exchange tube 7 and the flow dividing tube 8 can absorb the heat to be gasified and guide the heat to the heat conducting fins 4, the air can be introduced into the cooling tube 2 through the guiding of the heat conducting fin 4 to the radiating fin 5, the air passes through the cooling tube 2 and the spray head 3 to be discharged, so that the air flow rate of the side surface of the radiating fin 5 is accelerated, and the cooling pipe 2 can be internally filled with water, the water is sprayed out from the spray head 3 and flows to the outer wall of the roadbed slope 1 to cool, and the structure that the conducting strip 4 protrudes than the roadbed slope 1 can slow down the flow velocity of water, is convenient for water and the roadbed slope 1 to exchange heat, avoids the side surface of the roadbed slope 1 to be overheated.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a cooling structure of permafrost region highway subgrade side slope, includes subgrade side slope (1), its characterized in that: heat conduction piece (4) have evenly been laid on the surface of road bed side slope (1), the outer wall that the outside of heat conduction piece (4) is located road bed side slope (1) has shielding plate (6) through the bolt fastening, heat synchronization board (9) have been placed to the inboard of shielding plate (6), the inboard of heat synchronization board (9) is evenly fixed with fin (5) through the welding, heat conduction piece (4) are different in that one side of fin (5) is located the even gomphosis in inside of road bed side slope (1) and have been placed heat exchange tube (7), the bottom side surface of heat exchange tube (7) is equipped with shunt tubes (8) through the welding, heat transfer liquid (10) have been placed to the inside of shunt tubes (8), the top of heat conduction piece (4) is located the upper surface frame of road bed side slope (1) and is equipped with cooling module.
2. The cooling structure of the permafrost region expressway subgrade slope according to claim 1, characterized in that: cooling unit includes cooling tube (2), cooling tube (2) pass through the side surface of U nature bolt fastening at road bed side slope (1), shower nozzle (3) have evenly been arranged to the side surface of cooling tube (2).
3. The cooling structure of the permafrost region expressway subgrade slope according to claim 1, characterized in that: the heat synchronization plate (9) is a rectangular sheet-shaped component, the two ends of the radiating fins (5) are fixedly provided with the heat synchronization plate (9) through welding, and the heat synchronization plate (9) below the radiating fins (5) is in contact with the outer side surface of the heat conducting fins (4).
4. The cooling structure of the permafrost region expressway subgrade slope according to claim 1, characterized in that: the heat conducting fins (4) are net-shaped assemblies formed by weaving two strip-shaped components in a staggered mode, and the top ends of the heat exchange tubes (7) are in contact with the crossed positions of the heat conducting fins (4).
5. The cooling structure of the permafrost region expressway subgrade slope according to claim 1, characterized in that: the outer side surface of the roadbed side slope (1) is uniformly provided with cooling fins (5), a shielding plate (6) and a heat synchronization plate (9), wherein the cooling fins (5) are S-shaped sheet members, and the heat synchronization plate (9) is a rubber member.
6. The cooling structure of the permafrost region expressway subgrade slope according to claim 1, characterized in that: the upper surface of the heat-conducting fin (4) protrudes 1CM out of the side surface of the roadbed slope (1).
7. The cooling structure of the permafrost region expressway subgrade slope according to claim 1, characterized in that: the heat exchange tube (7) is a hollow tubular component together with the shunt tubes (8), four shunt tubes (8) are evenly arranged on the same horizontal plane of the bottom end of the heat exchange tube (7), and each of the bottom ends of the shunt tubes (8) keeps an inclination angle of 30 degrees with the bottom end of the heat exchange tube (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910880535.5A CN110565466B (en) | 2019-09-17 | 2019-09-17 | Cooling structure of freeway roadbed slope in permafrost region |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910880535.5A CN110565466B (en) | 2019-09-17 | 2019-09-17 | Cooling structure of freeway roadbed slope in permafrost region |
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| CN110565466A CN110565466A (en) | 2019-12-13 |
| CN110565466B true CN110565466B (en) | 2021-05-14 |
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| CN201910880535.5A Expired - Fee Related CN110565466B (en) | 2019-09-17 | 2019-09-17 | Cooling structure of freeway roadbed slope in permafrost region |
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| CN116716767B (en) * | 2023-06-06 | 2023-12-15 | 中国科学院西北生态环境资源研究院 | Integrated structure for repairing diseases of transition section of soil-frozen road bridge for many years |
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| CN204325840U (en) * | 2014-12-12 | 2015-05-13 | 中交第一公路勘察设计研究院有限公司 | A kind of large scale frozen earth roadbed pressure diffuse type cooling duct system |
| CN206034218U (en) * | 2016-08-26 | 2017-03-22 | 中交第一公路勘察设计研究院有限公司 | Hot pin compound road bed of block stone layer cooling |
| CN207958881U (en) * | 2017-04-28 | 2018-10-12 | 青海第一路桥建设有限公司 | A kind of highway filled-up ground |
| CN109853518A (en) * | 2019-01-22 | 2019-06-07 | 石家庄铁道大学 | A kind of solar ejector refrigeration device being applicable in permafrost region and protection of permafrost method |
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2019
- 2019-09-17 CN CN201910880535.5A patent/CN110565466B/en not_active Expired - Fee Related
Patent Citations (10)
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|---|---|---|---|---|
| JP3075530B2 (en) * | 1997-11-25 | 2000-08-14 | 有限会社ノザワサービスセンター | Snow melting system |
| CN2679247Y (en) * | 2004-01-08 | 2005-02-16 | 中国科学院寒区旱区环境与工程研究所 | Heat isolating and temp lowering appts. for protecting for frozen earth |
| KR101464169B1 (en) * | 2013-10-18 | 2014-11-21 | 한국철도기술연구원 | Inclined natural cooling device |
| CN104452782A (en) * | 2014-11-06 | 2015-03-25 | 兰州理工大学 | Cold region active ventilation cooling self-recovery slope anchorage structure and construction method |
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