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Method for landfilling roadbed in high earth fill on groundwork of soft soil

A soft soil foundation, high fill technology, applied in fill, roads, roads and other directions, can solve the problems of not perfecting EPS road control standards and specification requirements, and not perfecting methods, etc., to achieve strong thermal insulation and light density. , the effect of good mechanical properties

Active Publication Date: 2008-10-22
CHINA TIESIJU CIVIL ENG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, EPS is still in its infancy as a roadbed filler and soft foundation filler for high-grade pavements, and there are no perfect EPS road control standards and specification requirements.
Especially as the subgrade filler in the high fill section in the soft soil foundation, there is no perfect method

Method used

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  • Method for landfilling roadbed in high earth fill on groundwork of soft soil
  • Method for landfilling roadbed in high earth fill on groundwork of soft soil
  • Method for landfilling roadbed in high earth fill on groundwork of soft soil

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Embodiment Construction

[0035] The filling method of the high filling subgrade on the soft soil foundation of the present invention can be combined figure 1 Further explanation is as follows:

[0036] First, reinforce the foundation with square piles, and lay a 25cm thick lower gravel drainage layer, a 30cm thick lime soil layer, a 25cm thick upper gravel drainage layer, and a 100cm thick fly ash layer from bottom to top. Bearing layer. After the acceptance is passed, a blind ditch will be excavated every 10m on the underlying layer. Each blind ditch is 30cm wide and 30cm deep. Fill the blind ditch with gravel wrapped with geotextile to facilitate drainage during the construction period. Then set out the construction control line of the first layer of polystyrene foam board. According to the design drawings, use a total station to accurately place the vertices of the inner and outer edge lines of the polystyrene foam board, and set every ten columns on the line connecting the vertices of the inner and o...

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Abstract

The present invention provides a high-fill roadbed reclamation method on soft soil foundation. Said method uses polystyrene foam plate as main filling material and includes the following steps: reclaiming lower bearing layer, laying polystyrene foam plate bedding layer, laying first layer of polystyrene foam plate, laying second layer of polystyrene foam plate, laying other layers of polystyrene foam plate on the second layer, fixing top surface of polystyrene foam plate, laying geotextile and covering the geotextile with yellow sand.

Description

Technical field [0001] The invention relates to a civil construction method, in particular to a method for filling a high-fill roadbed on a soft soil foundation. Background technique [0002] In civil construction, especially in the construction of high-grade pavement, the post-construction settlement is required to be small and the road surface smoothness is high. This is not difficult for hard soil foundations. However, for soft soil foundations, especially high-filled areas in soft soil foundations, it has always been a construction difficulty. Internationally, various construction techniques have been developed for the earthwork construction of soft soil foundations, such as soil replacement method, soil piling method and vertical drainage pipe method. However, these methods still have many problems when used in high-filled areas. The construction workload is large, and the post-construction settlement cannot be easily guaranteed. In recent years, in the Netherlands, Sweden a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/18E01C3/00
Inventor 邹锡顺熊选爱高传伟杨家林吴业宏
Owner CHINA TIESIJU CIVIL ENG GRP CO LTD
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