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A construction method of expansive soil embankment structure for high-speed railway

A high-speed railway and expansive soil technology, applied in the field of geotechnical engineering, can solve the problems that cannot meet the deformation control requirements of high-speed railways, and achieve the effects of long deformation time, reduced settlement deformation, and controllable quality

Active Publication Date: 2021-07-13
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 method for constructing a high-speed railway expansive soil embankment structure in view of the problems existing in the prior art that cannot meet the deformation control requirements of high-speed railways

Method used

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  • A construction method of expansive soil embankment structure for high-speed railway

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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 method for constructing a high-speed railway expansive soil embankment structure. The high-speed railway expansive embankment structure includes a filling structure, a pile structure and a roof structure, the filling structure is built above the foundation, the pile structure runs through the filling structure, and the pile structure The top of the pile protrudes from the filling structure, the roof structure is located on the top of the filling structure, and is fixedly connected with the top of the pile structure, and the bottom of the roof structure is attached to the top of the filling structure. The pile structure and the roof structure form the supporting foundation of the railway track structure. The stress state of the roof structure in surface contact is significantly better than the suspended force state of the traditional subgrade pile-slab structure. The pile-slab structure deforms through the friction between the pile and the soil, and the deformation time Fast, can quickly complete the settlement deformation until it is stable, and the surcharge imposed by the railway track structure and train load weight is less than the preloaded weight, so that the embankment structure meets the deformation control requirements of high-speed railways, and at the same time can reduce engineering investment.

Description

technical field [0001] The invention relates to the field of geotechnical engineering, in particular to a method for constructing a high-speed railway expansive soil embankment structure. 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 Patents(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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