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Combined embankment edge covering structure and construction method thereof

A combination package and embankment technology, applied in infrastructure engineering, roads, excavation, etc., can solve the problems of large transport distance, affecting the stability of embankment side slope reinforcement and wrapping structure, increasing construction costs, etc., achieving high strength, prevention and control The effect of slope stability damage and high stiffness

Active Publication Date: 2017-03-22
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the clay-enclosed structure is used, the clay is often tens of kilometers away, and the transportation distance is large, resulting in high costs, which is difficult to be accepted by the builder; if the conventional geogrid reinforced soil embankment-enclosed structure is used, the existing geogrid In the grid-reinforced soil filling process, the geogrid needs to be fixed by "U" nails, and the upper and lower geogrids need to be connected with connecting rods, which not only increases the complexity of the geogrid-reinforced soil filling process, The construction time is prolonged, the construction cost is increased, and the rainwater seeps down into the geogrid reinforced soil-encased structure due to the water permeability of the top platform, which causes the bottom of the reinforced soil-encased layer to soften and affects the reinforcement of the embankment slope Stability of the hemming structure

Method used

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  • Combined embankment edge covering structure and construction method thereof
  • Combined embankment edge covering structure and construction method thereof

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Embodiment Construction

[0008] Below in conjunction with accompanying drawing and specific construction method, the present invention will be further described.

[0009] see figure 1 , carry out construction according to the following steps:

[0010] (1) After the embankment is filled to the top of the designed next-level embankment slope 11, when the new filling starts to the design wrapping width at the bottom of the embankment slope of this level (the wrapping width is not less than 4 m), the embankment wrapping In the border area, sprinkle the spare soil material to a soft and plastic state, and evenly sprinkle the cement on the watered soil material according to the weight ratio of cement to wet soil at a ratio of 8%, and use an excavator to carry out road mixing construction, and the road mixing is completed. The cement-modified soil is in a hard plastic state;

[0011] (2) Lay the road-mixed cement-modified soil on the bottom of the embankment slope excavation area at this level. The virtual...

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Abstract

The invention discloses a combined embankment edge covering structure and a construction method thereof. According to the combined soil embankment edge covering structure, cement modified soil is combined with a geogrid reinforcement soil sandwich structure, and therefore the embankment protection structure capable of preventing waterlogging damage caused by slope surface water washing and slope soil infiltration is formed; and the embankment protection structure comprises the four parts of a cement modified soil cushion layer 1, a geogrid reinforcement soil sandwich slope layer 2, a cement modified soil cover layer 3 and a slope plant loam layer 4. Compared with a traditional geogrid reinforcement soil embankment edge covering structure, the combined embankment edge covering structure has the significant advantages of being easy and rapid to construct, capable of saving geogrid materials, low in cost, good in waterlogging damage prevention and stability and the like, and is particularly suitable for prevention of embankment slopes composed of sandy soil, floury soil, granite residual soil and the like which are prone to subjected to waterlogging damage.

Description

technical field [0001] The present invention relates to an embankment wrapping structure, in particular to a combined embankment wrapping structure, and also relates to a construction method of the embankment combined wrapping structure. Background technique [0002] Under the action of rainfall, the embankment built with granite residual soil will infiltrate the rainwater, which will cause the water content of the granite residual soil to increase and the shear strength to decrease, which will cause the embankment to collapse and easily cause water damage. Therefore, for the filling of granite residual soil The embankment can be equipped with a clay-enclosed structure or an embankment-enclosed structure of geogrid-reinforced soil to prevent water damage to the embankment slope caused by rainfall erosion and humidification. However, if the clay-enclosed structure is used, the clay is often tens of kilometers away, and the transportation distance is large, resulting in high c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20E01C3/00
CPCE01C3/00E02D17/20
Inventor 刘龙武
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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