Cold rod active cold conduction roadbed structure for Tibet Plateau frozen soil region

Abstract

The invention discloses a cold rod active cold conduction roadbed structure for a frozen soil region of the Qinghai-Tibet Plateau, which comprises a frozen soil layer, a roadbed arranged at the top of the frozen soil layer, a road surface arranged at the top of the roadbed, and cold storage mechanisms arranged on two sides of the roadbed respectively, the cold storage mechanisms comprise cold storage rods, and cold storage agents are arranged in the cold storage rods. And one end of the cold storage rod penetrates through the roadbed and extends into the frozen soil layer. The cold storage rod is arranged in the frozen soil layer of the plateau area, the cold storage agent is arranged in the cold storage rod, in winter, on one hand, cold air is sucked into the cold storage rod through the top of the cold storage rod and stored through the cold storage agent, and on the other hand, the cold air around the cold storage rod is absorbed through the bottom of the cold storage rod arranged in the frozen soil layer, so that the cold storage effect is improved. And in the next year and when the temperature of the frozen soil layer rises, the stored cold air is released through the cold storage agent, the frozen soil layer around the cold storage rod is cooled, and the temperature of the frozen soil layer is prevented from rising.

Description

technical field [0001] The invention relates to the field of roadbed, in particular to a cold-rod active cold-conducting roadbed structure used in the frozen soil region of the Qinghai-Tibet Plateau. Background technique [0002] Permafrost is a special natural body that has changed at low temperature. Its frost heave and thawing phenomenon will cause subsidence deformation of subgrade, thermal slump of slope, cracking of culvert and other damage phenomena. It is the main technology that needs to be solved in highway engineering construction. problem. Especially in the Qinghai-Tibet Plateau, there are many permafrost. As one of the active cooling subgrade forms, the hot rod is a new and efficient heat transfer element. Its working medium is accumulated at the bottom of the heat pipe, and the evaporation section is in the lower half of the heat pipe. The segment is in the upper half of the heat pipe, and the adiabatic segment is in the middle. The working fluid evaporates a...

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Problems solved by technology

However, the main working time of the hot rod is summer. In winter, more cold air cannot be stored for release in the next year to keep the permafrost cold.

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