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Rapid transit railway soft rock-improved soil roadbed structure

A technology for high-speed railways and soil subgrades, applied in infrastructure engineering, roads, roads, etc., can solve problems such as the lack of clear regulations on the structure type of soft rock improved soil subgrades, and achieve the effect of ensuring settlement

Inactive Publication Date: 2011-02-16
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The current railway design standards "Code for Design of High-speed Railway" and "Code for Design of Railway Subgrade" have no clear regulations on the structural type of soft rock improved soil subgrade

Method used

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  • Rapid transit railway soft rock-improved soil roadbed structure

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Embodiment Construction

[0014] Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements. As mentioned above, the present invention provides a high-speed railway soft rock improved soil roadbed structure, which has comprehensive anti-drainage measures, good effect, and stable overall settlement, which can meet the post-construction settlement and long-term stability requirements of high-speed railway roadbeds.

[0015] The technical solutions of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Such as figure 1 As shown, the high-speed railway soft rock improved soil subgrade structure of the present embodiment includes an embankment composed of the surface layer of the subgrade bed 1, the bottom layer of the subgrade bed 2 and the basic body of the road 3, and the side slopes on both sides of the embankment are provided with a side slope pr...

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Abstract

The invention discloses a rapid transit railway soft rock-improved soil roadbed structure comprising a road embankment formed by a foundation bed surface layer, a foundation bed surface layer and a roadbed body. The side slopes of both sides of the road embankment are provided with side slope protection layers; a water-resisting layer is arranged between the roadbed body and a foundation bed bottom layer; the bottom surface of the roadbed body is also provided with a water-resisting layer; the water-resisting layer comprises a compound geomembrane and medium coarse sand layers which are arranged above and below the compound geomembrane; each medium coarse sand layer is 4-6cm thick; and the fine grain content in the medium coarse sand layers is less than 5 percent. The rapid transit railway soft rock-improved soil roadbed structure has comprehensive waterproof and drainage measures, good effect and stable overall settlement and can meet the requirements for the post-construction settlement and the long-time stability of the rapid transit railway roadbed.

Description

technical field [0001] The invention relates to the field of high-speed railway subgrade construction, in particular to a high-speed railway soft rock improved soil subgrade structure. Background technique [0002] The use of soft rock improved soil for subgrade construction is an effective measure to save costs and reduce investment. The current railway design standards "Code for Design of High-Speed ​​Railway" and "Code for Design of Railway Subgrade" have no clear regulations on the structural type of soft rock improved soil subgrade. Therefore, it is urgent to provide a high-speed railway soft rock improved soil subgrade structure to overcome the above-mentioned defects. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a high-speed railway soft rock improved soil subgrade structure, which has comprehensive anti-drainage and drainage measures, good effect, and stable overall settlement, which can meet the post...

Claims

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Application Information

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IPC IPC(8): E01C3/06E02D17/20E01C3/00
CPCY02A30/60
Inventor 李小和郭建湖赵勇詹学启贾厚华邬强卿启湘晏军李梅芳
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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