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Method for reinforcing existing railway roadbed by adopting lime-soil piles

An existing railway and lime-soil technology, applied in soil protection, roads, infrastructure engineering, etc., can solve the problems of lime-soil pile efficiency and effect limitations, imperfect design theory, etc.

Inactive Publication Date: 2019-03-26
中铁科学研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the incomplete design theory of lime-soil pile reinforcement of railway subgrade, the efficiency and effect of lime-soil pile reinforcement are greatly limited.

Method used

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  • Method for reinforcing existing railway roadbed by adopting lime-soil piles
  • Method for reinforcing existing railway roadbed by adopting lime-soil piles
  • Method for reinforcing existing railway roadbed by adopting lime-soil piles

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Embodiment Construction

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments, and the mode of the present invention includes but not limited to the following embodiments.

[0031] Dazhun Railway is a key project of the National (Eighth Five-Year) Plan. It is a heavy-duty coal transportation railway line. There are a series of diseases such as mud oozing, roadbed sinking, and road shoulder cracking in the railway roadbed. Therefore, in this embodiment, the reinforcement of the lime-soil pile is taken as an example for detailed description.

[0032] This embodiment adopts the method of reinforcing the existing railway roadbed with lime-soil piles, and the lime-soil piles are obliquely inserted into the existing railway roadbed along the side slopes on both sides of the roadbed, and the lime-soil piles inserted on both sides intersect in the roadbed; the lime-soil piles The inclination angle is 30-45°, the pile diameter of the lime-soi...

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Abstract

The invention discloses a method for reinforcing an existing railway roadbed by adopting lime-soil piles. The lime-soil piles are obliquely inserted into the existing railway roadbed along two side slopes of the roadbed, and the lime-soil piles inserted on both sides are crossed in the roadbed; the inclination angle of the lime-soil piles is 30-45 degrees, the pile diameter of the lime-soil pilesis 0.2-0.35 m, the pile length of the lime-soil piles is matched with the height of the existing railway roadbed, and the longitudinal pile spacing of the lime-soil piles is 3-4 times the pile diameter. The method optimizes the inclination angle, pile diameter, pile spacing and pile length of the lime-soil piles, improves the reinforcement efficiency and effect, and provides a powerful reference for summarizing the key technology of reinforcing the existing railway roadbed by the lime-soil piles.

Description

technical field [0001] The invention relates to the field of railway embankment reinforcement, in particular to a method for reinforcing an existing railway embankment with lime-soil piles. Background technique [0002] At present, there are many methods for foundation treatment and reinforcement, such as preloading method, replacement method, vibration compaction method, and lime-soil pile reinforcement. Relevant studies include: Li Xiaojian et al. used Plaxis software to study the static and dynamic effects of the subgrade before and after oblique grouting compaction pile reinforcement, showing that oblique grouting compaction piles have a significant strengthening effect on heavy-duty railway subgrades; Wu Xiaowei et al. The oblique rotary grouting piles reinforce the Shuohuang heavy-duty railway subgrade project as the background. The results show that the oblique rotary grouting piles have a positive effect on improving the stability of the subgrade and reducing the set...

Claims

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Application Information

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IPC IPC(8): E01B1/00E02D3/00
CPCE01B1/00E02D3/00
Inventor 于贵江亚男张凡陈俊栋熊模友那通兴曾铁森吴华丽
Owner 中铁科学研究院有限公司