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A kind of protective structure and construction method for expansive soil slope

A protective structure and expansive soil technology, which is applied in basic structure engineering, excavation, construction, etc., to achieve the effects of reducing workload and difficulty, simple structure, and shortening the construction period

Active Publication Date: 2022-07-22
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • A kind of protective structure and construction method for expansive soil slope
  • A kind of protective structure and construction method for expansive soil slope

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Embodiment approach

[0032] The present invention also provides an implementation method based on the above-mentioned protective structure for expansive soil slope, comprising the following steps:

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

[0034] Then, after mixing the excavated soil with EPS particles, it needs to be compacted after being put into the composite woven bag to discharge the excess pores in the bag to form a flat cuboid-shaped composite woven bag individual. The economical effect is effectively exerted, in which the EPS particles are used to absorb the swelling force of the swelling soil in the bag.

[0035] (2) Stack multiple filled compos...

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Abstract

The invention relates to the technical field of side slope prevention and control, and discloses a protective structure for expansive soil side slopes, comprising a side slope portion, an excavation surface is arranged along the side slope portion, and the excavation surface is in the shape of a step, Each step is filled with multi-layer woven bag fillers, and each layer of woven bag filler includes a plurality of composite woven bag individuals that are arranged in a tiled close relationship, and the composite woven bag individual includes a woven bag, and the inner part of the woven bag The surface is provided with an EPS board layer, the interior is filled with a mixture of expansive soil and EPS particles, and the outer surface is provided with a waterproof layer. The invention also discloses a construction method for the protective structure of the expansive soil slope. The invention has the advantages of simple structure, light weight, high strength, weight reduction, heat preservation, buffering and energy dissipation, simple construction method, greatly shortened construction period, and extremely economical benefits, and 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 a 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 water loss shrinkage make it very sensitive to changes in natural environment such as rainfall and evaporation. As a special clay with regional distribution and great harm, it has expansion and shrinkage, fissure and over-consolidation, and the three characteristics affect and relate to each other. Moreover, the change of its strength with water 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 cracking, foundation deformation, and slope instabil...

Claims

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Application Information

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Patent Type & Authority Patents(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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