Self-water-absorbing composite geogrid

Abstract

The invention discloses a self-water-absorbing composite geogrid, and belongs to the technical field of earthwork engineering. The self-water-absorbing composite geogrid comprises a plurality of transverse ribs arranged at equal intervals and a plurality of longitudinal ribs arranged at equal intervals, wherein the transverse ribs and the longitudinal ribs are perpendicularly intersected and wovento form the self-water-absorbing composite geogrid; and a water-absorbing material is embedded into the transverse ribs and the longitudinal ribs. The self-water-absorbing composite geogrid has the following beneficial effects that 1), water absorbing is achieved, the rib material contains the water absorbing material, water accumulated at a low water level in a reinforcement layer can be suckedout, the influence of accumulated water on the stability of the soil body is reduced, and the drainage consolidation time of the lower soil body is shortened; 2), water permeability is achieved, by adding the water-absorbing material to the ribs, the geogrid is made to form a drainage net, and it is not necessary to combine earthwork cloth for drainage of a treatment layer; and 3), water drainageis achieved, the problem that the polymer water-absorbing material has a water loss characteristic after air-drying is eliminated, the self-water-absorbing geogrid can be partially reversely arrangedon the surface of a dam in a wrapping manner when in use and used for air-drying and draining; and pre-compression-free drainage of the water at the bottom of the dam is achieved through the self-water-absorbing geogrid.

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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