A Construction Method for Improving the Strength of High Liquid Limit Soil Subgrade

A construction method and soil roadbed technology, applied in the field of roadbed filling construction, to achieve the effects of improving strength, reducing uneven settlement, and reducing spoils

Active Publication Date: 2022-04-26
GUANGDONG CONSTR CO LTD OF CHINA RAILWAY NO 3 ENG GRP CO LTD +1
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  • Description
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Problems solved by technology

[0004] The purpose of the present invention is to propose a construction method for improving the strength of high liquid limit soil roadbed, to solve one or more technical problems existing in the prior art, at least provide a beneficial choice or create conditions

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  • A Construction Method for Improving the Strength of High Liquid Limit Soil Subgrade
  • A Construction Method for Improving the Strength of High Liquid Limit Soil Subgrade
  • A Construction Method for Improving the Strength of High Liquid Limit Soil Subgrade

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Embodiment Construction

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. And the features in the embodiments can be combined with each other.

[0028] In describing the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper surface", "lower surface", "front" , "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Forward", "Reverse", "Axial ", "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device Or elements must ...

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Abstract

The invention discloses a construction method for improving the strength of a high-liquid-limit soil roadbed. A rubble interlayer is added to the roadbed, and the rubble interlayer includes a rubble upper layer, a geogrid layer and a rubble lower layer. Excavating multiple parallel longitudinal drainage ditches and multiple parallel horizontal drainage ditches on the base surface of the subgrade, filling the longitudinal drainage ditches and the horizontal drainage ditches with crushed stones, and then filling the scree layer on the base surface. In order to reduce the uneven subsidence of the subgrade, the construction method of the present invention adopts the construction technology of rubble interlayer + full tamping reinforcement. This construction method can improve the utilization rate of high liquid limit soil, reduce spoils, and reduce the filling of high liquid limit soil. The uneven settlement of the embankment; especially the combination of the base design scheme of gravel drainage ditch + flake layer and the technical scheme of adding rubble interlayer in the embankment filling, greatly improved the strength of the high liquid limit soil embankment.

Description

technical field [0001] The invention relates to the field of roadbed filling construction, in particular to a construction method for improving the strength of a high liquid limit soil roadbed. Background technique [0002] The high liquid limit soil is distributed in the slope residual soil and fully weathered rock in the Jurassic volcanic rock and Yanshanian granite area. In the humid area of ​​Lingnan in my country, the soil quality is high liquid limit soil. The rainy season in this area is from April to September every year. , the rainy season is relatively long, the rainfall is frequent, and the average number of rainfall days per month is more than 20 days. Shallow soft soil is distributed in intermountain depressions, valleys, basin corridors and intermountain depression sections, and the consolidation and settlement of soft soil is unfavorable to the stability of embankment filling. The distribution of soft soil is relatively scattered and the depth of burial is sha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C21/00E01C3/04E01C19/34
CPCE01C21/00E01C3/04E01C19/34
Inventor 陈均平董建树龚杨李德龙刘光铭张新林赵晓飞李继鑫王滕武张海
Owner GUANGDONG CONSTR CO LTD OF CHINA RAILWAY NO 3 ENG GRP CO LTD
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