Geogrid steep slope embankment structure with wrapped faces and construction method thereof

A technology of geogrids and embankments, which is applied to the structure and construction of steep slope embankments of return-wrapped geogrids, to achieve the effects of improving stability, reducing construction costs, and solving difficulties in compaction

Pending Publication Date: 2018-10-26
新疆维吾尔自治区交通规划勘察设计研究院
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to address the deficiencies in the prior art, to provide a back-wrapping geogrid steep slope embankment structure and construction metho

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  • Geogrid steep slope embankment structure with wrapped faces and construction method thereof
  • Geogrid steep slope embankment structure with wrapped faces and construction method thereof
  • Geogrid steep slope embankment structure with wrapped faces and construction method thereof

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[0029] The present invention will be further described in detail below with reference to the accompanying drawings, which is an explanation rather than a limitation of the present invention.

[0030] Such as figure 1 As shown, the present invention provides a re-wrapped geogrid steep slope embankment structure, the embankment slope is any slope less than 1:0.5, and a plurality of re-wrapped geogrid layers are stacked up and down at the empty surface of the side slope , Lay the thick sand and gravel cushion adjustment layer 15 and the square grid prefabricated block 16 in sequence on the outer side of the returned geogrid layer, and fill the square grid prefabricated block 16 with pebbles 17;

[0031] The back-packed geogrid layer of each layer includes a geogrid 1. The cross section of the geogrid 1 in working state is a trapezoidal groove structure with one side open. The closed end of the geogrid 1 is located on the side slope. Geotextile is laid on the inner wall of the grid 1, ...

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Abstract

The invention discloses a geogrid steep slope embankment structure with wrapped faces. A plurality of geogrid layers with the wrapped faces are arranged on the free face of a side slope in a vertically-stacked mode, thick gravel cushion adjusting layers and square grid precast blocks are sequentially laid on the outer sides of the geogrid layers with the wrapped faces, and the square grid precastblocks are filled with grait; and each geogrid layer with the wrapped face comprises a geogrid, wherein the section of each geogrid is of a trapezoidal-groove structure with one side open, and the closed end of each geogrid is located on the free face of the side slope. The tail end of the each geogrid is fixed to a roadbed, and a geotechnical cloth is laid on the inner wall of each geogrid and filled with a gravelly soil roadbed filler. The problems that in the laying process of the geogrids, soil nearby the free face is difficult to compact, and the labor and time are wasted in grid stretching are solved through a geogrid reinforcement soil structure which better facilitates the geogrids to give full play to the reinforcement property and thus improve the stability of the reinforced steep slope embankment, and a matched construction technology.

Description

technical field [0001] The invention belongs to the technical field of embankment filling, and in particular relates to a steep-slope embankment structure and a construction method of a return-wrapped geogrid whose grid can be automatically tensioned. Background technique [0002] In the process of building roads in mountainous areas, when the ground transverse slope is steep, the conventional large slope toe design cannot be adopted. Masonry structures are usually used to shrink the slope toe. Using geogrid reinforced steep slope embankments can replace the masonry structure, which is significantly Reduce the construction difficulty of the project, shorten the construction period, reduce the project cost and speed up the project progress. However, during construction at home and abroad, the construction of geogrid-reinforced steep-sloping embankments all adopts the method of stacking planting bags on the air-facing surface as temporary support. The disadvantage of this meth...

Claims

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Application Information

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IPC IPC(8): E01C3/04
CPCE01C3/04E02D2300/0084
Inventor 毛爱民孙云龙刘杰杨新龙马建勇陈建刚张建稿
Owner 新疆维吾尔自治区交通规划勘察设计研究院
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