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Large-scale frozen roadbed cooling structure capable of strengthening convective cooling efficiency of rock blocks

A cooling structure and large-scale technology, which is applied in roads, roads, buildings, etc., can solve the problems of inconspicuous cooling effect and weakened forced convection effect of stone subgrade, and achieve the effect of simple structure, low cost and abundant air volume

Inactive Publication Date: 2015-03-25
CCCC FIRST HIGHWAY CONSULTANTS
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Problems solved by technology

However, under the condition of wide width, the forced convection effect of the block stone roadbed is weakened, which will cause the overall cooling effect of the block stone roadbed to be insignificant

Method used

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  • Large-scale frozen roadbed cooling structure capable of strengthening convective cooling efficiency of rock blocks
  • Large-scale frozen roadbed cooling structure capable of strengthening convective cooling efficiency of rock blocks

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Embodiment Construction

[0017] The present invention will be described in detail below in combination with specific embodiments.

[0018] The invention relates to a large-scale permafrost roadbed cooling structure that enhances the convective cooling performance of stone blocks, including a horizontal ventilation plate 1 arranged along the cross-section direction of the roadbed, which is a concrete slab 7, and is arranged on the top of the block stone layer 3. It is a prefabricated Prefabricated in the field, the horizontal ventilation plate 1 is provided with a plurality of horizontal ventilation holes 1, and as a ventilation channel, the horizontal ventilation plate 1 is provided with horizontal stressed steel bars 8 and vertical stirrups 9. Under the transverse ventilation plate 1, a gravel upper cushion 2, a piece of rock 3 and a gravel lower cushion 4 are successively laid, and ordinary filling soil 5 is laid thereon. Under the influence of the natural air outside the subgrade, the transverse ve...

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Abstract

The invention relates to a large-scale frozen roadbed cooling structure capable of strengthening the convective cooling efficiency of rock blocks. After a roadbed of an expressway is broadened, the heat-absorbing surface is enlarged to absorb more heat. In order to keep the heat stability of the roadbed body, more cooling capacity is needed to maintain balance and cool the roadbed. The large-scale frozen roadbed cooling structure provided by the invention comprises a transverse ventilating plate which is arranged in the direction of the cross section of the roadbed, wherein a plurality of transverse ventilating holes are formed in the transverse ventilating plate; an upper gravel cushion layer, a rock block layer and a lower gravel cushion layer are sequentially arranged below the transverse ventilating plate, common filling is arranged above the transverse ventilating plate; the transverse ventilating plate is internally provided with a transverse stressed reinforcing steel bar and a vertical stirrup. The large-scale frozen roadbed cooling structure provided by the invention is simple in structure, low in cost and economical and practical, and can be used for decreasing the temperature of the top of the rock block layer for a long time so as to cause the heat convection effect of upper and lower layers of the rock block layer and further cooling the roadbed.

Description

technical field [0001] The invention belongs to the technical field of traffic construction, and in particular relates to a large-scale permafrost subgrade cooling structure that enhances the convective cooling performance of flake stones. Background technique [0002] Due to global warming and increasing human engineering activities, the degradation of permafrost is accelerating, which makes engineering construction in permafrost regions more difficult. Due to serious permafrost diseases in ice-saturated and soil-bearing ice-layered sections, simply raising the height of the subgrade cannot achieve the purpose of protecting the permafrost. Special control measures are required to reduce the downward spread of the artificial upper limit of the subgrade. The fundamental way to solve this problem is to control and reduce the temperature of the roadbed by using the engineering measures of actively cooling the roadbed, and the block stone roadbed is an effective control measure...

Claims

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Application Information

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IPC IPC(8): E01C3/06
CPCE01C3/06E01C3/006
Inventor 汪双杰陈建兵符进金龙朱东鹏李金平袁堃张会建
Owner CCCC FIRST HIGHWAY CONSULTANTS
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