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Protective structure for expansive soil side slope and construction method

A technology of protective structure and expansive soil, which is used in infrastructure engineering, excavation, construction, etc.

Active Publication Date: 2021-09-10
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this patent also proposes the application of EPS materials, it is not the same as the structure of geowoven bags glued to EPS boards in terms of research content and innovation points.

Method used

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  • Protective structure for expansive soil side slope and construction method
  • Protective structure for expansive soil side slope and construction method

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Embodiment approach

[0032] The present invention also provides a method for implementing the protective structure for expansive soil slopes based on the above, comprising the following steps:

[0033] (1) Excavate part of the expansive soil slope to form a step shape. The step height can be set at about 0.8m, and the slope is 1:1.5. Roll the foundation base on the bottom step and lay gravel pad Layer 5, the gravel cushion is made of well-graded and unweathered gravel or gravel, the maximum diameter is less than 50mm, and the thickness of the gravel cushion is 0.3m. After the laying is completed, it needs to be rolled with a vibratory roller.

[0034] Then, mix the excavated soil with EPS particles, put them into the composite woven bag and then compact them, discharge the excess pores in the bag, and form a flat cuboid composite woven bag individual, so that local materials are better. The economical effect can be effectively exerted, in which the EPS particles are used to absorb the expansive fo...

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Abstract

The invention relates to the technical field of side slope prevention and control, and discloses a protective structure for an expansive soil side slope. The protective structure comprises a side slope part, an excavation surface is arranged along the side slope part, the excavation surface is step-shaped, each step is filled with multiple layers of woven bag filling bodies, each layer of woven bag filling body comprises a plurality of composite woven bag individuals which are tiled and arranged next to each other, each composite woven bag individual comprises a woven bag, an EPS plate layer is arranged on the inner surface of the woven bag, the woven bag is filled with a mixture of expansive soil and EPS particles, and a waterproof layer is arranged on the outer surface of the woven bag. The invention further discloses a construction method of the protective structure for the expansive soil slope. The structure has the advantages of simple structure, light weight, high strength, weight reduction, heat preservation, buffering and energy dissipation, the construction method is simple, the construction period is greatly shortened, great economic benefits are achieved, and the structure is suitable for most expansive soil slope protection projects.

Description

technical field [0001] The invention relates to the technical field of slope prevention and control, in particular to a protective structure and construction method for expansive soil slopes. Background technique [0002] Expansive soil is a special kind of unsaturated clay, which is widely distributed in my country. Its characteristics of water absorption expansion and loss of water shrinkage make it very sensitive to natural environmental changes such as rainfall and evaporation. As a special clay with regional distribution and great hazards, it has expansion and contraction, cracks and super-consolidation, and the three characteristics affect each other and are related to each other. And the property that its strength changes with the moisture content often causes various engineering problems, which has a huge impact on the stability and safety of the project. Engineering construction in expansive soil areas will face potential threats such as building cracks, foundation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20
CPCE02D17/20E02D17/202
Inventor 汪磊张立婷李晋鹏张世雷
Owner SHANGHAI UNIV OF ENG SCI
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