CN201620318U - Railroad bed sunshade shed in permafrost region - Google Patents

Railroad bed sunshade shed in permafrost region Download PDF

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Publication number
CN201620318U
CN201620318U CN2010201549723U CN201020154972U CN201620318U CN 201620318 U CN201620318 U CN 201620318U CN 2010201549723 U CN2010201549723 U CN 2010201549723U CN 201020154972 U CN201020154972 U CN 201020154972U CN 201620318 U CN201620318 U CN 201620318U
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China
Prior art keywords
sunshade
roadbed
permafrost region
shed
skeleton
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Expired - Fee Related
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CN2010201549723U
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Chinese (zh)
Inventor
葛建军
刘争平
李肖伦
勾振铎
包黎明
曹元平
李成
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China Railway First Survey and Design Institute Group Ltd
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China Railway First Survey and Design Institute Group Ltd
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Priority to CN2010201549723U priority Critical patent/CN201620318U/en
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Publication of CN201620318U publication Critical patent/CN201620318U/en
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Abstract

The utility model relates to a railroad bed sunshade shed in the permafrost region capable of preventing uneven settlement due to thermal imbalance of permafrost. At present, roadbed engineering in permafrost region is basically characterized in that thermal rods are embedded to prevent frozen soil from heaving and thaw settlement, or ventilation channels are arranged in the roadbed to keep frozen soil frozen, however, these measures cost highly. In the sunshade shed according to the utility model, a skeleton thereof is provided with a plurality of sun shields in order to block off thermal radiation; and own tunnel-shaped shed tunnels and spacing between wing-shaped sun shields at two sides are utilized to form bidirectional air convection so as to timely take away heat generated by thermal radiation and maintain the temperature of roadbed slope inside the shed at a lower level. The railroad bed sunshade shed has low cost and convenient construction, can effectively solve the thaw settlement problem of lower frozen soil of roadbed in construction engineering in the permafrost region, and guarantees safety and stability of the engineering.

Description

Permafrost region railway bed sunshade
Technical field
The utility model relates to a kind of roadbed sunshade, is specifically related to a kind of permafrost region railway bed sunshade.
Background technology
Frozen soil is a kind of soil body medium very responsive to temperature, has certain rheological characteristic, builds engineering structure at permafrost region and can not face two big danger with avoiding: frost heave and thaw collapse.Wherein, the form that exists of water plays an important role, and when water became ice, it is big that volume becomes, and makes soil expansion, the face of land so the rising of arching upward, frost heave that Here it is; When the ice in the soil is transformed into water, volume contraction, the face of land just sinks, and is called thaw collapse.Under the effect repeatedly of these two kinds of phenomenons, differential settlement will take place because of the heat balance imbalance in the frozen soil of substrates such as road or house below, causes and breaks or subside.The ever-frozen ground area of China accounts for 22.4% of area, occupies the third place in the world, and high height above sea level ever-frozen ground area then occupies first of the world.Since 1962, Qinghai-Tibet frozen soil is just showing as and is freezing phenomenons such as continuous days shortens, maximum depth of frozen ground reduces, and the frost heave and the thaw collapse activity of the Qinghai-Tibet Highway all kinds of frozen soil layers that distribute along the line are very strong.At present, be to adopt in roadbed, to bury hot pin underground and prevent the frozen soil thaw collapse substantially both at home and abroad, or vent passages is set in roadbed keeps frozen soil to freeze the subgrade construction in ever-frozen ground district.These measures have been played certain effect to the road harm that solves permafrost region.As one of protection ever-frozen ground measure, sunshade can significantly reduce because extraneous weather for the influence of ever-frozen ground, helps the existence of ever-frozen ground.In order to reach the transmission of blocking solar radiant heat, the sunshade structure design combines the natural environment of engineering department, place, through researching and analysing, has selected ventilative formula structure, and this still belongs to the first time in China's similar engineering.
Summary of the invention
The purpose of this utility model provides a kind of frozen soil layer that can prevent the permafrost region railway bed sunshade of differential settlement takes place because of the heat balance imbalance.
The technical scheme that the utility model adopted is:
A kind of permafrost region railway bed sunshade is characterized in that: described roadbed sunshade constitutes tunnel shape hangar tunnel by sunshade skeleton and canopy face; A plurality of downward-sloping wing type visor brackets are set on two side skeletons of described sunshade, on the skeleton of ceiling and wing type visor bracket, the polylith sunbreaker are set respectively, constitute the canopy face of sunshade.
Described a kind of permafrost region railway bed sunshade is characterized in that: described wing type visor bracket is 8-16, and it is evenly distributed on the skeleton both sides of sunshade.
Described a kind of permafrost region railway bed sunshade, it is characterized in that: the angle of slope of described wing type visor bracket is identical with the angle of slope of the skeleton of ceiling.
The utlity model has following advantage:
The utility model utilizes the sunbreaker that is provided with on the sunshade that heat radiation is blocked, and avoids the rising of the domatic temperature of roadbed effectively; The heat of sunbreaker itself and sunbreaker radiation generation can be in time taken away in cross-ventilation heat exchange under the sunbreaker; The general soil body surface temperature of effective flow air temperature is low under the sunbreaker, the domatic temperature of roadbed under the sunbreaker can be remained on the lower level of general surface temperature.Alleviate the thaw collapse problem of permafrost region roadbed lower floor frozen soil effectively, guaranteed the safety and the stability of engineering.
Description of drawings
Fig. 1 is the elevation of roadbed sunshade;
Fig. 2 is the lateral view of roadbed sunshade;
Among the figure, 1-sunshade skeleton, 2-canopy face, 3-visor bracket, 4-sunbreaker.
The specific embodiment
The utility model relates to a kind of permafrost region railway bed sunshade.Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Described roadbed sunshade constitutes tunnel shape hangar tunnel structure by sunshade skeleton 1 and canopy face 2, builds above roadbed.Such configuration helps the interior cross-ventilation along the roadbed direction of canopy, reduces the temperature in the canopy.A plurality of downward-sloping wing type visor brackets 3 are set on two side skeletons of sunshade; On the wing type visor bracket 3 of the skeleton of ceiling and both sides, polylith sunbreaker 4 is set respectively, constitutes the canopy face 2 of sunshade.The setting of sunbreaker 4 has been played significant feature to thermal-radiating blocking, and is effectively to avoid the main factor of the domatic intensification of roadbed.The wing type visor bracket of both sides and the skeleton of ceiling are all downward-sloping.Like this 4 pairs of multi-direction thermal-radiating obstructs of sunbreaker of having strengthened on it are set, more effectively that roadbed in the canopy is domatic temperature remains on the lower level of general surface temperature.Two side skeletons are provided with a plurality of downward-sloping wing type sunbreakers 4, the sheet separation of these sunbreakers has also promoted the interior cross-ventilation perpendicular to the roadbed direction of canopy, make the cross-ventilation under the canopy form the combination convection current be parallel and perpendicular to the roadbed both direction, more timely, take away the heat of sunbreaker itself and sunbreaker radiation generation effectively.The angle of slope of the wing type visor bracket 3 on two side skeletons is identical with the angle of slope of the skeleton of ceiling, makes more rule of the interior air type of flow of canopy, strengthens the heat convection effect.Multidirectional cross-ventilation acting in conjunction in the multi-direction heat rejection of sunbreaker and the canopy, the temperature that roadbed in the canopy is domatic keep having prevented the heat balance imbalance of roadbed below frozen soil on the lower level, have avoided the differential settlement of frozen soil layer.

Claims (3)

1. permafrost region railway bed sunshade is characterized in that: described roadbed sunshade constitutes tunnel shape hangar tunnel by sunshade skeleton (1) and canopy face (2); A plurality of downward-sloping wing type visor brackets (3) are set on two side skeletons of described sunshade, on the skeleton of ceiling and wing type visor bracket (3), polylith sunbreaker (4) are set respectively, constitute the canopy face (2) of sunshade.
2. a kind of permafrost region railway bed sunshade according to claim 1 is characterized in that: described wing type visor bracket (3) is 8-16, and it is evenly distributed on the skeleton both sides of sunshade.
3. a kind of permafrost region railway bed sunshade according to claim 1 and 2, it is characterized in that: the angle of slope of described wing type visor bracket is identical with the angle of slope of the skeleton of ceiling.
CN2010201549723U 2010-04-09 2010-04-09 Railroad bed sunshade shed in permafrost region Expired - Fee Related CN201620318U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201549723U CN201620318U (en) 2010-04-09 2010-04-09 Railroad bed sunshade shed in permafrost region

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Application Number Priority Date Filing Date Title
CN2010201549723U CN201620318U (en) 2010-04-09 2010-04-09 Railroad bed sunshade shed in permafrost region

Publications (1)

Publication Number Publication Date
CN201620318U true CN201620318U (en) 2010-11-03

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CN2010201549723U Expired - Fee Related CN201620318U (en) 2010-04-09 2010-04-09 Railroad bed sunshade shed in permafrost region

Country Status (1)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103643670A (en) * 2013-12-16 2014-03-19 中铁西北科学研究院有限公司 Self-adjusting type permafrost protecting device
CN104074108A (en) * 2014-06-16 2014-10-01 刘国良 High-speed rail with trajectory
CN107387112A (en) * 2017-08-22 2017-11-24 中冶集团武汉勘察研究院有限公司 Urban transportation culvert or tunnel gateway anti-flooding masking device and method
CN108193575A (en) * 2017-12-20 2018-06-22 张昆 The anti-freeze expansion structure and its paving method of seasonal frozen soil region roadbed
CN109958244A (en) * 2019-04-25 2019-07-02 中建八局装饰工程有限公司 A kind of folded grade canopy mounting system and an mounting method thereof
CN111155387A (en) * 2020-01-03 2020-05-15 广西大学 Ventilation and sunshade structure for roadbed slope in cold region

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103643670A (en) * 2013-12-16 2014-03-19 中铁西北科学研究院有限公司 Self-adjusting type permafrost protecting device
CN103643670B (en) * 2013-12-16 2015-06-17 中铁西北科学研究院有限公司 Self-adjusting type permafrost protecting device
CN104074108A (en) * 2014-06-16 2014-10-01 刘国良 High-speed rail with trajectory
CN104074108B (en) * 2014-06-16 2016-07-20 刘国良 Trajectory high ferro
CN107387112A (en) * 2017-08-22 2017-11-24 中冶集团武汉勘察研究院有限公司 Urban transportation culvert or tunnel gateway anti-flooding masking device and method
CN108193575A (en) * 2017-12-20 2018-06-22 张昆 The anti-freeze expansion structure and its paving method of seasonal frozen soil region roadbed
CN109958244A (en) * 2019-04-25 2019-07-02 中建八局装饰工程有限公司 A kind of folded grade canopy mounting system and an mounting method thereof
CN111155387A (en) * 2020-01-03 2020-05-15 广西大学 Ventilation and sunshade structure for roadbed slope in cold region

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20101103

Termination date: 20180409

CF01 Termination of patent right due to non-payment of annual fee