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High-speed railway expansive soil embankment structure and construction method thereof

A technology for high-speed railways and dirt roads, applied in infrastructure engineering, roads, buildings, etc., can solve problems such as the inability to meet the deformation control requirements of high-speed railways, and achieve the effects of fast deformation time, reduced engineering investment, and reduced settlement deformation.

Active Publication Date: 2020-08-07
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a high-speed railway expansive soil embankment structure and construction method for the problem that the existing technology cannot meet the deformation control requirements of high-speed railways

Method used

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  • High-speed railway expansive soil embankment structure and construction method thereof

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Embodiment

[0036] like figure 1 As shown, this embodiment provides a high-speed railway expansive soil embankment structure, including filling structure, pile structure 1, reinforcement layer 3, composite waterproof and drainage board 4 and roof structure 6;

[0037] The filling structure includes the filling surface structure 5 and the filling substructure 2. The filling substructure 2 is filled in layers above the foundation, and the filling surface structure 5 is filled above the filling substructure 2. Specifically, the filling The substructure 2 is made of expansive soil, and the filling surface structure 5 is made of A and B groups of fillers.

[0038] The pile structure 1 is buried in the foundation and runs through the fill structure. The top of the pile structure 1 protrudes from the fill surface structure 5 and is fixedly connected with the roof structure 6. At least two rows of pile structures 1 are arranged at intervals along the width direction of the line. Each row of piles...

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Abstract

The invention discloses a high-speed railway expansive soil embankment structure and a construction method thereof. The embankment structure comprises a fill structure, a pile structure and a top plate structure, the fill structure is filled above a foundation, the pile structure penetrates through the fill structure, the top of the pile structure extends out of the fill structure, the top plate structure is located at the top of the fill structure and is fixedly connected with the top of the pile structure, and the bottom of the top plate structure is attached to the top of the fill structure. The pile structure and the top plate structure form a supporting foundation of the railway track structure, so the stress state of the top plate structure in surface contact is obviously better thanthe suspended stress state of a traditional foundation pile plate structure; the pile plate structure deforms through the friction effect of piles and soil, so the deformation time is short, and settlement deformation can be rapidly completed till stabilization; the pile-loading capacity applied by a railway track structure and a train load weight is smaller than the pile-preloading weight, so the embankment structure can meet the deformation control requirement of a high-speed railway, and meanwhile engineering investment can be reduced.

Description

technical field [0001] The invention relates to the field of geotechnical engineering, in particular to a high-speed railway expansive soil embankment structure and a construction method. Background technique [0002] When high-speed railways are built in expansive soil areas and there is no qualified subgrade filler, the investment in subgrade construction is high, and high-speed railway regulations stipulate that improved expansive soils should not be used for subgrade filling, and expansive soil spoils excavated from road cuttings are not conducive to environmental protection. How to realize the economy of building high-speed railway subgrade in expansive soil area and meet the deformation control requirements of high-speed railway is a technical problem that must be solved. [0003] Therefore, it is of great significance to propose a suitable high-speed railway expansive soil embankment structure and construction method. Contents of the invention [0004] The object o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B2/00E01B1/00E02D3/10
CPCE01B1/00E01B2/006E02D3/10
Inventor 姚裕春肖朝乾张东卿封志军张耀
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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