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An asphalt concrete ballastless track structure

A technology of ballastless track and modified asphalt, which is applied in the direction of track, road, ballast layer, etc., can solve the problem of difficult to ensure the stability of ballastless track, easy damage of functional layer, increase of construction cost of ballastless track, high-speed train operation risk, etc. question

Active Publication Date: 2020-10-27
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +5
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Problems solved by technology

[0004] However, in the actual application process, it is difficult to ensure the long-term waterproof and load-bearing stability of the ballastless track only by relying on the added fiber concrete layer and the surface of the subgrade bed. maintenance, which increases the construction cost of ballastless track and the operation risk of high-speed trains

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  • An asphalt concrete ballastless track structure
  • An asphalt concrete ballastless track structure
  • An asphalt concrete ballastless track structure

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Embodiment Construction

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] Generally speaking, in order to meet the speed requirements of high-speed trains, the surface smoothness of ballastless railways needs to be strictly controlled, which requires the subgrade surface structure of ballastless railways to have high bearing capacity and water resistance to avoid settlement, cracks and damage At the same time, the subgrade surface structure is also required to be resistant to high-temperature melting and low-temperature frost heave, while the graded crushed stone layer in the existing ballastless track surface structure is affected by the difference in...

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Abstract

The invention relates to an asphalt concrete ballastless track structure. The structure comprises a foundation bed surface layer formed by graded broken stones and a bottom seat plate which is arranged on the foundation bed surface layer and formed by concrete, a sealing layer is arranged between the foundation bed surface layer and the bottom seat plate, and the sealing layer is formed by a modified asphalt concrete material with loading performance and water proofing performance and is arranged on the part between the foundation surface layer and the bottom seat plate in a whole-fracturing surface laying manner.

Description

technical field [0001] The invention relates to the technical field of subgrade structures of high-speed railways, in particular to an asphalt concrete ballastless track structure. Background technique [0002] With the rapid development of high-speed railways in recent years, high-speed train operation safety requires higher and higher requirements for smoothness and durability of railway tracks. Ballastless track, as the world's advanced track technology, not only has high precision, but also has good stability, and is especially suitable for high-speed trains with a speed of more than 200km / h. [0003] The existing ballastless track structure generally includes a ballastless track slab, a base plate, a subgrade bed surface layer, a subgrade bed bottom layer and a road base body from top to bottom. In order to prevent rainwater and other surface water from infiltrating into the road base body and destroying the stability and bearing capacity of the ballastless track, the ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B1/00
CPCE01B1/002E01B1/008
Inventor 叶阳升蔡德钩韩自力张千里陈锋闫宏业李泰灃谢永江仲新华楼梁伟姚建平石越峰董亮杨常所费建波钱国玉祝振华张世杰杨国涛唐广辉刘俊飞支洋
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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