Reinforcement method and reinforcement structure for treating railway soft soil roadbed settlement overweight before operation

A technology for soft soil subgrade and reinforcement structure, which is applied in basic structure engineering, basic structure testing, soil protection, etc. Deterioration of force conditions, short construction period, and ensuring the effect of integrity

Active Publication Date: 2013-02-13
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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AI Technical Summary

Problems solved by technology

This technology has limited damage to the existing subgrade, but the construction period is relatively long, and the implementation is poor when there is no construction access on site and pumping materials is difficult.
[0006] At present, no technology has been found that has little damage to the existing roadbed, good implementability, easy quality control, and can completely solve the problem of excessive settlement of railway soft soil roadbeds before operation within a short construction period

Method used

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  • Reinforcement method and reinforcement structure for treating railway soft soil roadbed settlement overweight before operation
  • Reinforcement method and reinforcement structure for treating railway soft soil roadbed settlement overweight before operation
  • Reinforcement method and reinforcement structure for treating railway soft soil roadbed settlement overweight before operation

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Embodiment Construction

[0042] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:

[0043] A reinforcement method for dealing with excessive settlement of railway soft soil roadbed before operation, such as Figure 1~6 As shown, it includes the following steps:

[0044] Step 1: Remove the track structure and contact wire in the soft soil subgrade area of ​​the railway, and then excavate the upper bed of the subgrade 6.1 to form a foundation pit 6.3. On the foundation pit 6.3, set multiple pre-stressed high-strength concrete vertically inserted into the subgrade 6.1. Pipe pile 1.1, pre-stressed high-strength concrete pipe pile 1.1 After the completion of the construction, the pre-stressed high-strength concrete pipe pile 1.1 and the hole wall shall be filled with fine stone concrete in time;

[0045] Step 2: Pre-bury the vertical grouting pipe 5.1, the horizontal grouting pipe 5.2 and the vertical grouting pipe 5.3 which are connected t...

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Abstract

The invention discloses a reinforcement method and a reinforcement structure for treating railway soft soil roadbed settlement overweight before operation. The reinforcement structure mainly consists of five parts, namely a main bearing structure system, a reinforced cushion layer structure system, a foundation bed drainage system, a settlement observation system and a reserved grouting system. The technical problems that the existing roadbed is greatly damaged, the construction period is long, the construction property is low, the quality is difficult to control and the problem that the soft soil roadbed settlement overweight is caused in the conventional technical scheme are effectively solved.

Description

Technical field [0001] The present invention relates to the technical field of roadbed construction, in particular to a reinforcement method and a reinforcement structure for handling excessive settlement of railway soft soil roadbed before operation. technical background [0002] At present, the technical means used to solve the problem of excessive settlement of railway soft soil roadbed before operation mainly include lateral restraint piles combined with base grouting technology, replacement of lightweight materials, and long spiral CFG piles (Cement Fly-ash Grave) under the foundation bed. Lime gravel pile) technology and bored pile technology under the foundation bed. [0003] The existing lateral restraint piles combined with the foundation grouting technology requires the construction of 3 to 4 rows of jet grouting piles or pipe piles near the slope toe on both sides of the embankment for lateral restraint, and the guide holes near the slope and slope toe adopt static Pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C3/04E02D27/12E02D3/10E02D1/08E02D33/00
Inventor 周青爽李小和赵新益曾长贤张守周姚洪锡
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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