A self-absorbing composite geogrid

Abstract

The invention discloses a self-absorbing composite geogrid, belonging to the technical field of geotechnical engineering, comprising a plurality of equidistantly arranged transverse ribs and a plurality of equidistantly arranged longitudinal ribs, the transverse ribs and the longitudinal ribs intersect perpendicularly, and are compiled into a self-absorbent composite geogrid Geogrid; transverse ribs and longitudinal ribs embedded with absorbent material. The present invention has the following advantages: 1) Water absorption: the rib material contains water-absorbing material, which can absorb the low-level accumulated water in the reinforced layer, reducing the impact of accumulated water on the stability of the soil and the drainage and consolidation time of the lower soil; 2) Water permeability: By adding water-absorbing materials to the ribs, the geogrid forms a drainage network, without the need to combine geotextiles for drainage of the treatment layer; 3) Drainage: According to the polymer water-absorbing material has the characteristic of dehydration after drying, self-absorbing water When in use, the composite geogrid can be partly wrapped on the surface of the embankment for drying and drainage; the water at the bottom of the embankment can be discharged through the self-absorbing composite geogrid without preloading.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to a self-absorbing composite geogrid. Background technique [0002] In dams, embankments and slope protection projects, when the stress on the soil exceeds its elastic strain range, a large plastic strain will be generated until the soil is destroyed; or under the action of long-term stress, the soil will produce a certain creep And relaxation phenomenon, will induce soil cracking, excessive displacement or even collapse and other accidents. Therefore, geogrids are often used in the soil to change the stress field, strain field and the stress state of the soil itself within the treatment range, and to reinforce the soil, thereby reducing the displacement and unevenness of the soil. displacement, enhanced stability. [0003] At present, there are many existing geogrids as follows: plastic geogrid, warp-knitted geogrid, composite bidirectional geogrid, bidirec...

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Problems solved by technology

[0006] Purpose of the invention: The purpose of the present invention is to provide a self-absorbing composite geogrid to solve the engineering problem that the accumulation of free water in the treated soil cannot be eliminated in time due to the non-absorbent nature of the reinforced material when the geogrid is used alone. For example, in the embankment settlement basin, the accumulation of water in the cushion layer of the basin bottom affects the consolidation of the lower soft foundation, and the influence of continuous rainfall on the stability of geogrid slope reinforcement

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