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Stacked geogrid enhanced composite soil roadbed and side slope ecology protection structure thereof

A technology of geogrid and earth subgrade, which is applied in the direction of infrastructure engineering, roads, roads, etc., can solve the problems of subgrade settlement and large deformation, and achieve the effects of improving settlement, enhancing anti-deformation, and improving subgrade load performance

Inactive Publication Date: 2012-07-18
尚久駜 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to overcome the problem of subsidence and large deformation of the roadbed in the prior art, and provides a laminated geogrid composite roadbed and its slope protection structure

Method used

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  • Stacked geogrid enhanced composite soil roadbed and side slope ecology protection structure thereof
  • Stacked geogrid enhanced composite soil roadbed and side slope ecology protection structure thereof
  • Stacked geogrid enhanced composite soil roadbed and side slope ecology protection structure thereof

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Experimental program
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Effect test

Embodiment 1

[0016] like figure 1 , figure 2 and image 3 As shown, the laminated geogrid composite soil subgrade is formed by layered laying of geogrid (1) + soil (2) after compaction and then repeated laying and compaction; the compacted geogrid ( 1) The distance between layers is 20-25cm, and the distance between the geogrids (1) on the same layer is 1.5-2m (the width of the geogrid is 3.5-4m), the purpose of which is to reduce the use of geogrids and control the total cost of the project .

[0017] The layered geogrid (1) adopts the method of staggered overlapping, the purpose of which is to reduce the amount of materials and at the same time ensure the balance of the subgrade load.

[0018] The length of the geogrid (1) of this laminated geogrid reinforced composite soil subgrade deep into the subgrade (3) is 3.5-4m. At this time, the pull-out strength of the geogrid (1) is:

[0019] S 1 f 1 +S 2 f 2

[0020] where S 1 is the gap area of ​​geogrid (1), F 1 is the shear str...

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Abstract

The invention discloses a stacked geogrid enhanced composite soil roadbed. The stacked geogrid enhanced composite soil roadbed is composed of a geogrid playing an enhancement effect and soil playing a base material effect, the conventional filling roadbed single soil compression method is changed into a stacked geogrid enhanced composite soil technical method, and gravity action under the roadbed load condition is partially converted into a drawing force to the geogrid, thus the defects that the roadbed settles and deformation amount is high in the conventional technique can be effectively overcome. The invention also discloses a side slope protection structure of the composite soil roadbed, and the side slope protection structure is simple to construct and has water and soil conservation function and the like.

Description

technical field [0001] The invention relates to a soil subgrade and its side slope protection structure, in particular to a laminated geogrid soil subgrade and its side slope protection structure. Background technique [0002] The traditional subgrade technology is established based on the classic theory of "Geoengineering". In the past, the research on the mechanical theory of backfill soil subgrade was carried out with soil as the main structural material. The results of this single material technology research inevitably exist in engineering. Obvious disadvantages, such as the use of a large number of retaining walls to prevent subgrade deformation, the limited slope ratio coefficient of the subgrade and the excessive land occupation of road projects, etc. In order to change the confusion caused by this traditional technology, it is promising to update the traditional technology with the principle of modern composite technology. Contents of the invention [0003] The i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C3/04E02D17/20
Inventor 尚久駜陈化雨
Owner 尚久駜
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