Vent pipe for engineering in cold area

Abstract

The invention discloses a vent pipe for engineering in cold area, comprising an outer pipe supporting engineering load with penetrating pipe wall and a solid metal inner pipe for ventilation and heat conduction. The outer pipe is provided with a rib for supporting the inner pipe. The metal inner pipe is fixedly connected with the rib for supporting the inner pipe so that a chamber layer surrounding the solid metal inner pipe for receiving gas is formed between the solid metal inner pipe and the outer pipe. The chamber layer for receiving gas is provided respectively with entities for sealing end port of the chamber layer in vertical end port portions of the pipe, which therefore forms the vent pipe having the chamber layer for receiving gas. The vent pipe effects to inhibit or alleviate frost heaving and thaw collapse problem of engineering in cold area.

Description

technical field [0001] The invention relates to the field of basic structures for engineering construction in cold regions, in particular to a ventilation pipe used in engineering in cold regions. Background technique [0002] In the construction of permafrost projects in cold regions around the world, especially in the permafrost (continuous permafrost and discontinuous permafrost) of the subgrades and embankments of railways and roads built in permafrost Uneven settlement is the most important way to cause road damage. For example, most sections of the Qinghai-Tibet Highway and Qingkang Highway in the western part of my country pass through the permafrost zone. Due to the uneven settlement of the road due to the thawing of the permafrost, the road surface often suddenly has depressions or protrusions, which bury the safety of the road. Great hidden danger, cause traffic safety accident thus. In order to reduce the incidence of uneven settlement of foundation construction ...

AI Technical Summary

Problems solved by technology

However, although the ventilation pipe of this structure can quickly take away the heat in the subgrade soil through the low-temperature natural wind passing through the through-wall pipe in winter, it can also bring a large amount of cold energy from the outside into the subgrade, causing frost heave disease , and in summer, a large amount of external heat will be brought into the soil due to the relatively high temperature natural wind passing through the through-wall pipe, resulting in subgrade melting and settlement diseases

Therefore, it is a pity that the through-wall ventilation duct of this single-layer wall structure still has deficiencies in solving the problem of frost heaving or thawing of permafrost in engineering in cold regions.

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