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

A technology for high-speed railways and permafrost areas, applied in infrastructure engineering, roads, soil protection, etc., can solve problems such as strength decline, permafrost thawing, thawing, etc., to achieve environmental protection, prevent soil erosion, reduce Effect of small additional stress

CN110424193APending Publication Date: 2019-11-08CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2019-11-08

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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.
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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...

Examples

Embodiment Construction

[0033] The present invention will be described in detail below in combination with specific embodiments.

[0034] The present invention relates to a hollow module cutting structure for high-speed railways in plateau permafrost regions. Hollow modules 7 are laid in the cutting, and the layers are vertically and closely arranged in rows as the bearing foundation of the track slab; the hollow modules 7 are cuboid or cube. Hollow structure, in which two symmetrical surfaces are open, and ventilation openings 8 are reserved on the remaining surfaces, which are correspondingly connected when docking with adjacent modules.

[0035] When the hollow module 7 is assembled, the open surface is along the line direction, the rows and columns are aligned, the bottom surface is smooth, and the ventilation openings 8 of the adjacent modules are facing. The top surface of the hollow module 7 on the upper floor is provided with a vertical ventilation pipe 6, which communicates the interior of t...