High-speed railway hollow module cutting structure of plateau multi-year frozen soil area

Abstract

The invention relates to a high-speed railway hollow module cutting structure of a plateau multi-year frozen soil area. Hollow modules are laid in a road cut, and the hollow modules are tightly arranged in rows in a layering mode and serve as a bearing foundation of a track plate; and the hollow modules are of a cuboid or cube hollow structure, two symmetric surfaces are open, the other surfaces are provided with ventilation openings, so that the hollow modules are in correspondingly communication with each other when are in butt joint with the adjacent modules. According to the structure, a compensation type foundation design principle, a chimney working principle and a frozen soil engineering design theory are applied, the foundation additional stress is reduced, the roadbed settlement is reduced, moreover, the cold energy which is rich in altitude or the cold energy produced artificially can be fully utilized, so that the ground temperature is reduced, the foundation is cooled, anda new idea, a new method and a new way are provided for solving the technical problems of high-speed railway frozen soil melting and sedimentation as well as foundation sedimentation in the plateau multi-year frozen soil area.

Description

technical field [0001] The invention relates to a cutting structure of a high-speed railway, in particular to a hollow module cutting structure of a high-speed railway in a plateau permafrost region. Background technique [0002] The subgrade of high-speed railway is the foundation to bear the track structure and train load, and is the key project to ensure the high-speed, safe and comfortable operation system of trains. In addition to basic functions, subgrade engineering should also have sufficient strength, stiffness, stability and durability to ensure a smooth subgrade and long-term stability and safety of the railway foundation. See Table 1 for the post-construction settlement control standards of the high-speed railway embankment. [0003] [0004] However, in the construction of high-speed railways in permafrost regions, permafrost thawing and settlement is the primary key technical problem that needs to be solved. It begins to melt, the soil is saturated with wa...

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Problems solved by technology

[0004] However, in the construction of high-speed railways in permafrost regions, permafrost thawing and settlement is the primary key technical problem that needs to be solved. It begins to melt, the soil is saturated with water, the strength drops sharply, and the subgrade sinks, which cannot meet the settlement control standards of high-speed railways. It is imperative to research and develop permafrost cutting structures suitable for high-speed railways

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