CN212835328U

CN212835328U - Unidirectional stretching polyethylene geogrid

Info

Publication number: CN212835328U
Application number: CN202021323710.5U
Authority: CN
Inventors: 邱晓仙; 熊中围; 徐兆林
Original assignee: Guangzhou Tengfei Construction Engineering Materials Co ltd
Current assignee: Guangzhou Tengfei Construction Engineering Materials Co ltd
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2021-03-30
Anticipated expiration: 2030-07-08

Abstract

The utility model relates to the technical field of civil engineering materials, in particular to an unidirectional stretching polyethylene geogrid, which comprises a grid body, wherein a long hole is formed in the grid body, convex parts are arranged on the upper side wall and the left side wall of the grid body, grooves matched with the convex parts are arranged on the lower side wall and the right side wall of the grid body, circular through holes are formed in four corners of the grid body, and through the arrangement of the through holes, the secondary punching forming process is avoided when the lap joint is carried out, the engineering cost is reduced, and the field splicing efficiency of the geogrid is improved; by arranging the convex parts and the concave grooves, the plurality of grid bodies can be spliced, so that the splicing efficiency is improved; the reinforcing ribs are arranged, so that the strength of the grid body can be improved; a plurality of grid bodies after the overlap joint can improve the integral strength and the connection stability after the overlap joint through reinforcing ribs or connecting pieces.

Description

Unidirectional stretching polyethylene geogrid

Technical Field

The utility model belongs to the technical field of civil engineering material technique and specifically relates to an unidirectional stretching polyethylene geogrid.

Background

The unidirectional tensile polyethylene geogrid is formed by plasticizing polyethylene as a raw material, extruding a plate, punching, heating and stretching. The geogrid is laid in soil, and an efficient stress transfer mechanism is formed through occlusion and interlocking between the geogrid meshes and the soil body, so that local loads can be quickly and effectively diffused to the large-area soil body, and the purposes of reducing local damage stress and prolonging the service life of the engineering are achieved.

However, the existing unidirectional tension polyethylene geogrids still have the following defects: 1. in the application of the unidirectional tensile geogrid in retaining walls, bridge abutments, steep slope engineering and the like, active soil pressure, dynamic load on the upper part of a structure body, temperature stress and the like need to be borne, the molecular structure of the material generates fatigue under the action of large tension for a long time and the repeated action of the dynamic load, the performance of the material is attenuated, the aging of the geogrid is accelerated, the strength of the material is low, the friction coefficient with sand and stone is small, and the chemical property is unstable; 2. the field lap joint assembly mode of the geogrid consumes labor cost, and has the defects of easy movement of lap joints, poor stability, low strength and the like; 3. the strength of the civil grille is lower.

Disclosure of Invention

Not enough to prior art, the utility model provides a good, the intensity of stability is high and lap-joint department is difficult to take place the unidirectional stretching polyethylene geogrid that removes.

The technical scheme of the utility model is that: the utility model provides an one-way stretch polyethylene geogrid, it includes the grid body, the slot hole has been seted up in the grid body, be provided with the convex part on the last lateral wall of grid body and the left side wall, set up the recess that suits with the convex part on the lower lateral wall of grid body and the right side wall, the circular shape through-hole has all been seted up at four angles of grid body.

Furthermore, the front end of the grid body is provided with a reinforcing rib, and two ends of the reinforcing rib are fixed on the through hole through bolts.

Furthermore, the reinforcing rib is a galvanized steel wire rope, and the periphery of the galvanized steel wire rope is coated with a polyethylene sheath.

Furthermore, the two sides of the convex part are respectively provided with a buckling lug, the groove is internally provided with a buckling groove, and the buckling lug and the buckling groove are mutually meshed.

Furthermore, the periphery of the grid body is coated with a HDPE (high-density polyethylene) unidirectional stretching film, and the HDPE unidirectional stretching film is a HDPE film with unique performance after being stretched in a unidirectional high-magnification mode.

Further, still be provided with a plurality of blind holes on the grid body for retaining.

Further, the long hole is an elliptical long hole.

In another preferred embodiment, the slot is rectangular.

In another preferred embodiment, a first buckle is inserted into the through hole, the top end of the first buckle is connected with the connecting strip, a second buckle is arranged on the other side of the connecting strip, the second buckle is inserted into the other through hole, and the first buckle, the second buckle and the connecting strip form a connecting piece to connect the two spliced grid bodies.

Furthermore, the bottom of first buckle and second buckle all is provided with the card strip that two slopes set up.

The utility model has the advantages that: the utility model has the advantages that the through holes are arranged, the secondary punching molding process is avoided when the lap joint is carried out, the engineering cost can be effectively reduced, the on-site splicing efficiency of the geogrid can be effectively improved, and the mechanical strength of the splicing points is increased; by arranging the convex parts and the concave grooves, the plurality of grid bodies can be spliced, so that the splicing efficiency is improved; the reinforcing ribs are arranged, so that the strength of the grid body can be improved; the lapped plurality of grid bodies can improve the overall strength and the connection stability after lapping through reinforcing ribs or connecting pieces; through at cladding HDPE one-way stretch film, improve the intensity of grid body itself, with the stability of the coefficient of friction and the chemical property of grit, increase of service life.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of splicing two unidirectional stretched polyethylene geogrids of the present invention;

fig. 3 is a schematic structural view of four pieces of unidirectional tension polyethylene geogrids of the present invention;

FIG. 4 is a schematic structural view of embodiment 3;

fig. 5 is a schematic structural view of a connector in embodiment 3.

In the figure, 1, a grid body; 2. a long hole; 3. a convex portion; 4. a through hole; 5. reinforcing ribs; 6. blind holes; 7. a first buckle; 8. a connecting strip; 9. a second buckle; 10. a connecting member; 11. and (6) clamping the strip.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:

example 1

As shown in fig. 1-3, an uniaxially stretched polyethylene geogrid comprises a grid body 1, wherein a long hole 2 is formed in the grid body 1, convex portions 3 are arranged on the upper side wall and the left side wall of the grid body 1, grooves corresponding to the convex portions 3 are formed in the lower side wall and the right side wall of the grid body 1, and circular through holes 4 are formed in four corners of the grid body 1.

The front end of the grid body 1 is provided with a reinforcing rib 5, and two ends of the reinforcing rib 5 are fixed on the through holes 4 through bolts.

The reinforcing ribs 5 are galvanized steel wire ropes, and polyethylene sheaths are coated on the peripheries of the galvanized steel wire ropes.

The two sides of the convex part 3 are respectively provided with a buckling lug, the groove is internally provided with a buckling groove, and the buckling lug and the buckling groove are mutually meshed.

The periphery of the grid body 1 is coated with an HDPE (high-density polyethylene) unidirectional stretching film, and the HDPE unidirectional stretching film is an HDPE film which is stretched in a unidirectional high-magnification mode and has unique performance.

The grid body 1 is further provided with a blind hole 6 for storing water.

The long hole 2 is an elliptical long hole.

When a plurality of grid bodies are spliced, the length and the connecting position of the reinforcing ribs can be adjusted according to actual needs, so that the splicing speed is increased, and the material consumption of the reinforcing ribs is reduced.

Example 2

The long hole 2 is rectangular.

Example 3

As shown in fig. 4 and 5, a first buckle 7 is inserted into the through hole 4, the top end of the first buckle 7 is connected with the connecting strip 8, a second buckle 9 is arranged on the other side of the connecting strip 8, the second buckle 9 is inserted into another through hole 4, the first buckle 7, the second buckle 9 and the connecting strip 8 form a connecting piece 10, and the two spliced grid bodies 1 are connected.

The bottom ends of the first buckle 7 and the second buckle 9 are both provided with two clamping strips 11 which are obliquely arranged. Other structures all are the same with embodiment 1, need not to use the strengthening rib to strengthen the bulk strength after the concatenation some, and the intensity of tie point is strengthened to the accessible connecting piece, avoids the overlap joint phenomenon of shifting to appear simultaneously.

The foregoing embodiments and description have been provided to illustrate the principles and preferred embodiments of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed.

Claims

1. The utility model provides an uniaxially stretched polyethylene geogrid, it includes grid body (1), its characterized in that: slotted hole (2) have been seted up in grid body (1), be provided with convex part (3) on the last lateral wall of grid body (1) and the left side wall, set up the recess that suits with convex part (3) on the lower lateral wall of grid body (1) and the right side wall, circular shape through-hole (4) have all been seted up at four angles of grid body (1).

2. An uniaxially stretched polyethylene geogrid according to claim 1, wherein: the front end of the grid body (1) is provided with a reinforcing rib (5), and two ends of the reinforcing rib (5) are fixed on the through hole (4) through bolts.

3. An uniaxially stretched polyethylene geogrid according to claim 2, wherein: the reinforcing ribs (5) are galvanized steel wire ropes, and polyethylene sheaths are coated on the peripheries of the galvanized steel wire ropes.

4. An uniaxially stretched polyethylene geogrid according to claim 3, wherein: the two sides of the convex part (3) are respectively provided with a buckling lug, the groove is internally provided with a buckling groove, and the buckling lug and the buckling groove are mutually meshed.

5. An uniaxially stretched polyethylene geogrid according to claim 4, wherein: the periphery of the grid body (1) is coated with a HDPE (high-density polyethylene) unidirectional stretching film.

6. An uniaxially stretched polyethylene geogrid according to claim 5, wherein: the grid body (1) is further provided with a blind hole (6).

7. An uniaxially stretched polyethylene geogrid according to claim 6, wherein: the long hole (2) is an oval long hole.

8. An uniaxially stretched polyethylene geogrid according to claim 1, wherein: the long hole (2) is rectangular.

9. An uniaxially stretched polyethylene geogrid according to claim 1, wherein: insert on through-hole (4) and be equipped with first buckle (7), the top and the connecting strip of first buckle (7) are connected (8), the opposite side of connecting strip (8) is provided with second buckle (9), second buckle (9) are inserted and are established on another through-hole (4), a connecting piece (10) is constituteed with connecting strip (8) to first buckle (7), second buckle (9), connects two grid bodies (1) after the concatenation.

10. An uniaxially stretched polyethylene geogrid according to claim 9, wherein: the bottom ends of the first buckle (7) and the second buckle (9) are provided with two clamping strips (11) which are obliquely arranged.