CN212926030U - Geogrid - Google Patents

Abstract

The utility model discloses a geogrid, first strip and longitudinal arrangement's second strip including transverse arrangement, the crossing department of first strip and second strip forms the node, first strip is as an organic whole through being connected the rope sewing in node department with the second strip, first strip includes the plastic layer of inner core and cladding inner core respectively with the second strip, through the aforesaid setting, and antifriction is corrosion-resistant, and node strength is all higher with bulk strength.

Description

Geogrid

Technical Field

The utility model relates to a geosynthetic's technical field, in particular to geogrid.

Background

Geogrids, as a new type of geosynthetic material, have been widely used in various civil engineering applications. As a soil body reinforcement material, the geogrid has the function of enabling a reinforced soil body to have better integrity, so that the stability of the soil body is improved. In order to prevent the occurrence of diseases such as cracking, deformation, uneven settlement, instability and the like of the soil body, the reinforcement material must uniformly distribute the stress of the local soil body in the soil body with a larger area range through the effects of deformation, friction, interlocking and the like, so that the creep of the soil body unit is reduced. When the geogrid is buried in soil, brittle stones, silt and other media, the strips and the connecting nodes of the geogrid provide distribution paths and anchoring points for load transmission, and a high-efficiency stress transmission and reaction system is formed.

The existing geogrids comprise steel-plastic geogrids, warp-knitted geogrids and plastic geogrids, but the geogrids respectively have respective disadvantages:

1. the steel-plastic geogrid is in a latticed structure formed by welding the longitudinal strips and the transverse strips, but welding points of the steel-plastic geogrid are easy to fall off under the extrusion of soil bodies, and meanwhile, the steel-plastic geogrid is easy to rust and rot when encountering water because the steel wires are sunken in the steel wires, so that the overall strength of the geogrid is influenced;

2. the warp-knitted geogrid is knitted into a grid structure by the longitudinal strips and the transverse strips, but the warp-knitted geogrid is easily worn by brittle stones and silt and is also easily corroded, and the service life of the geogrid is influenced.

3. The plastic geogrid is integrally formed by the longitudinal strips and the transverse strips, and the overall strength of the geogrid is relatively low due to the equipment limitation and the plastic stretching property.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a geogrid, antifriction is corrosion-resistant, and node intensity is all higher with the bulk strength.

The above technical purpose of the present invention can be achieved by the following technical solutions: the geogrid comprises a first strip and a second strip which are transversely arranged and a second strip which are longitudinally arranged, wherein a joint is formed at the intersection of the first strip and the second strip, the first strip and the second strip are integrally sewn at the joint through a connecting rope, and the first strip and the second strip respectively comprise an inner core and a plastic layer for coating the inner core.

Further, the inner core comprises polyester yarns or glass fibers which are arranged in an array mode.

Further, the plastic layer is made of PVC, PP or PE.

Further, the first strips and the second strips are alternately woven up and down to form a grid-shaped structure.

Further, still include the geotechnological cloth that sets up in the bottom.

Further, the geotextile is sewn with the first strip and the second strip into a whole through the connecting rope.

Further, the geotextile adopts filament geotextile short fiber geotextile.

To sum up, the utility model discloses following beneficial effect has:

1. the inner cores of the first strip and the second strip are provided with polyester yarns or glass fibers, so that the moisture absorption degree is low, and the polyester yarns or glass fibers have good wrinkle resistance, elasticity and dimensional stability, good electrical insulation performance, sunlight resistance, friction resistance and good chemical reagent resistance;

2. the outer part of the inner core is coated by PVC, PP or PE, so that the contact surface with a soil body is increased, the friction with the soil body is increased, the inner core can be well protected, the influence on the overall strength due to fracture caused by external force is prevented, the PVC has a flame-retardant effect, and the risk of fire is reduced;

3. the joint adopts a sewing process, so that the peeling strength and the shearing force of the joint reach more than 30% of the breaking coincidence value of the strips with the same specification.

4. The geotextile is arranged at the bottom, so that the geotextile has higher water permeability, reversed filtration property, durability, tensile strength and flexibility.

Drawings

Fig. 1 is a schematic view of a first strip of the present invention positioned below a second strip;

fig. 2 is a schematic view of the first and second bands of the present invention being woven alternately up and down;

fig. 3 is a first schematic connection diagram of the geotextile of the present invention;

fig. 4 is a schematic view of a second attachment of the geotextile of the present invention;

fig. 5 is a schematic view of the internal structure of the first or second belt of the present invention.

In the figure: 1. a first strip; 2. a second strip; 3. a node; 4. connecting ropes; 5. an inner core; 6. a plastic layer; 7. and (4) geotextile.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "back", "surface", "side", "inner", "around", and the like, indicate orientations or positional relationships, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

As shown in fig. 1 to 5, the geogrid comprises a first strip 1 and a second strip 2 which are arranged transversely and longitudinally, wherein a junction 3 is formed at the intersection of the first strip 1 and the second strip 2, the first strip 1 and the second strip 2 are integrally sewn at the junction 3 through a connecting rope 4, and the first strip 1 and the second strip 2 respectively comprise an inner core 5 and a plastic layer 6 covering the inner core 5.

The inner core 5 is including arranging polyester yarn or the glass fiber that sets up, plastic layer 6 adopts PVC, PP or PE, first strip 1 sets up polyester yarn or glass fiber with 2 inner cores of second strip, the hygroscopicity is low, there is good wrinkle resistance, elasticity and dimensional stability, there is good electrical insulation performance, sunlight-resistant, antifriction, there is better chemical reagent resistance, PVC, PP or PE cladding is adopted to the outside of inner core 5, the contact surface with the soil body has been increased, the friction with the soil body has been increased, protection inner core 5 that can be fine, prevent to produce fracture because of external force and influence the bulk strength, PVC also has fire-retardant effect, the dangerous danger of conflagration has been reduced

The first strips 1 and the second strips 2 are alternately woven into a grid structure up and down, and the geogrid has better integrity and higher strength through the weaving mode

Still including setting up in the geotechnological cloth 7 of bottom, geotechnological cloth 7 adopts long filament geotechnological cloth 7, specifically is polyester filament geotechnological cloth 7 or short fiber geotechnological cloth 7, sets up long filament geotechnological cloth 7 or short fiber geotechnological cloth 7 in the bottom, has higher water permeability, and the anti-filterability, durability, tensile strength, flexibility.

Geotechnical cloth 7 is as an organic whole through connecting rope 4 and first strip 1, the sewing of second strip 2, through the aforesaid setting, geotechnical cloth 7 only need connect rope 4 with being connected of first strip 1, second strip 2 and connect as an organic wholely through a process, and processing is high-efficient and the cost is lower, and node 3 adopts sewing process for node 3 peel strength, shearing force reach more than 30% of meeting the value with specification strip fracture.

The geogrid has the following advantages: the high-strength concrete has high strength and small creep deformation, is suitable for various environmental soils, can be used for high and large retaining walls of high-grade roads, is more suitable for deep sea operation and bank reinforcement, fundamentally solves the technical problems of low strength, poor corrosion resistance, short service life and the like caused by long-term seawater erosion when other materials are used as gabions, and effectively avoids construction damage caused by rolling and damage in the construction process.

The construction method of the geogrid comprises the following steps:

1. the laying surface of the geogrid is relatively flat, after the laying layer is qualified through inspection, in order to prevent the longitudinal deflection phenomenon, white lines and hanging lines are firstly drawn on the laying layer according to the width, then the laying can be started, and then the end parts of the geogrid are fixed by U-shaped nails (4 nails are used for every meter of width);

2. after the end part of the geogrid is fixed, the geogrid is slowly paved forwards by a paving machine or a manual method, then 10 meters are carried out, manual inspection is carried out once until one roll of the geogrid is paved, and then the next roll of the geogrid is paved;

3. laying: and taking the roll length as a unit for paving the section length, after the section length of the geogrid to be paved is fully paved, integrally checking the paving quality once, then paving the next section, and when the next section is paved, continuously paving the second section forwards after the geogrid and the geogrid are fixed by binding wires by taking the net distance of one overlapped grid as the lap joint length, and repeating the operations.

The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.

Claims (7)

1. Geogrid, comprising a first strip (1) arranged transversely and a second strip (2) arranged longitudinally, the intersection of said first strip (1) and second strip (2) forming a node (3), characterized in that: the first strip (1) and the second strip (2) are sewn into a whole at a joint (3) through a connecting rope (4), and the first strip (1) and the second strip (2) respectively comprise an inner core (5) and a plastic layer (6) covering the inner core (5).

2. A geogrid according to claim 1, wherein: the inner core (5) comprises polyester yarns or glass fibers which are arranged in an array mode.

3. A geogrid according to claim 1, wherein: the plastic layer (6) is made of PVC, PP or PE.

4. A geogrid according to claim 1, wherein: the first strips (1) and the second strips (2) are alternately woven up and down to form a grid-shaped structure.

5. A geogrid according to any one of claims 1-4, wherein: the geotextile (7) is arranged at the bottom.

6. A geogrid according to claim 5, wherein: the geotextile (7) is sewn with the first strip (1) and the second strip (2) into a whole through the connecting rope (4).

7. A geogrid according to claim 6, wherein: the geotextile (7) adopts filament geotextile (7) or short fiber geotextile (7).

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