A unidirectional plastic tensile geogrid and its usage method

Abstract

The present invention relates to the technical field of geogrids, and particularly relates to a unidirectional plastic tensile geogrid and its usage method, which includes a grid thin plate, a first rib and a second rib; multiple groups of through holes arranged in parallel are provided on the grid thin plate, and each group of through holes includes a first punching hole and a second punching hole. An installation groove one and multiple groups of limiting grooves are provided on the first rib, and the limiting grooves are equidistantly distributed on the first rib and are located within the installation groove one; the second rib includes an installation groove two, connection buckles one and two for weft fixing provided on both sides of the second rib, multiple groups of limiting blocks for preventing the first rib and the second rib from sliding relative to each other are provided on the second rib, and a deformation groove for reserving a deformation space for the second rib is provided on the second rib and is located between the multiple groups of limiting blocks. A convex block for squeezing the second rib to contract and deform along the deformation groove is provided on the connection buckle two. The present invention facilitates the splicing of the unidirectional plastic tensile geogrid in the warp and weft directions, greatly reduces the use of U-shaped nails, and reduces the workload during laying and disassembly.

Description

Technical Field

[0001] The present invention relates to the technical field of geogrids, and particularly relates to a unidirectional plastic tensile geogrid and a using method thereof. Background Art

[0002] The unidirectional plastic tensile geogrid is a high-strength geosynthetic material. It is made of high-density polyethylene (HDPE) as the raw material, extruded and pressed into a thin plate, then punched with regular hole meshes, and then longitudinally stretched. It is widely used in dikes, tunnels, docks, highways, railways, buildings and other fields. When in use, the geogrid is pasted on the required area and fixed to the ground by U-shaped nails for area coverage.

[0003] When the area to be paved is larger than the area of the unidirectional plastic tensile geogrid, and when the unidirectional plastic tensile geogrid is locally damaged, it cannot be directly longitudinally connected or horizontally connected with the unidirectional plastic tensile geogrid, nor can the damaged part be repaired. It is necessary to cut the unidirectional plastic tensile geogrid with a cutting scissors and fix it with a large number of U-shaped nails, and then continue to lay the unidirectional plastic tensile geogrid. When removing, it is necessary to clean a large number of U-shaped nails on the ground, and the installation and disassembly workload is large. Summary of the Invention

[0004] Aiming at the above-mentioned disadvantages of the prior art, the present invention provides a unidirectional plastic tensile geogrid and a using method thereof, which can effectively solve the problems in the prior art that it is inconvenient to splice with each other, a large number of U-shaped nails are required for fixing, and the laying and disassembly workload is large.

[0005] To achieve the above object, the present invention is realized through the following technical solutions:

[0006] The present invention provides a unidirectional plastic tensile geogrid, including a grid thin plate, and a first rib and a second rib arranged on both sides of the grid thin plate for meridionally connecting multiple grid thin plates;

[0007] Multiple groups of through holes are arranged in parallel on the grid thin plate, and each group of through holes includes a first punching hole and a second punching hole with different sizes, and the first punching holes and the second punching holes on adjacent through holes are arranged in a staggered manner;

[0008] The first rib is used for buckling with the second rib on the adjacent grid thin plate when the grid thin plate is damaged. The first rib is provided with a first installation groove and multiple groups of limiting grooves, and the limiting grooves are equidistantly distributed on the first rib and are located in the first installation groove;

[0009] The second rib includes a second installation groove, a first connecting buckle and a second connecting buckle which are arranged on the second rib and located on both sides of the opening of the second installation groove for weft fixing. A plurality of limiting blocks for preventing the first rib and the second rib from sliding relative to each other are arranged on the second rib, and a deformation groove for reserving a deformation space for the second rib is arranged on the second rib and located between the plurality of limiting blocks. A convex block for extruding the second rib to contract and deform along the deformation groove is arranged on the second connecting buckle.

[0010] Further, the top surface of the first rib is flush with the top surface of the grid thin plate, and the bottom surface of the second rib is flush with the bottom surface of the grid thin plate.

[0011] Further, the number of groups of through holes on the grid thin plate is an even number, and the first punching and the second punching are symmetrically close to the first rib and the second rib respectively to improve the tensile strength at the middle end of the grid thin plate.

[0012] Further, the limiting blocks include a first limiting block and a second limiting block which are alternately arranged on the second rib, and the deformation groove is located between the first limiting block and the second limiting block. The first limiting block and the second limiting block are in an inclined rectangular shape, and the inclined directions of the first limiting block and the second limiting block are opposite.

[0013] Further, the deformation groove is a semi-cylindrical groove, which is used to enhance the anti-tensile strength of the inner wall of the deformation groove and is not easy to break.

[0014] Further, both the first installation groove and the second installation groove are right trapezoidal grooves.

[0015] Further, a trapezoidal card slot for the end of the second connecting buckle far from the second rib to extend into is arranged on the first connecting buckle, an extrusion groove for the end of the first connecting buckle far from the second rib to extend into is arranged on the second connecting buckle, and the convex block is located on the side of the second connecting buckle far from the second rib and close to the adjacent first rib.

[0016] Further, the dimensional relationship between L1 on the second connecting buckle and L2 and L3 on the first connecting buckle is L1 < L3 and L1 > L2, and the dimension of H1 is greater than the dimension of H2. It is used for weft fixing by extending the second connecting buckle into the trapezoidal card slot during installation, and the first connecting buckle is stuck into the extrusion groove on the second connecting buckle when the grid thin plate is extruded and deformed.

[0017] A using method of a unidirectional plastic tensile geogrid, which is applied to the above-mentioned unidirectional plastic tensile geogrid, and the using method includes the following steps:

[0018] S1. Lay the unidirectional geogrid on the required area by means of the grid thin plate cooperating with a plurality of first ribs and second ribs;

[0019] S2. When the length of the unidirectional geogrid in the warp direction is insufficient, buckle the rib 1 on the extended grid thin plate with the rib 2 on the already laid grid thin plate, and make the limit block 1 and limit block 2 on the rib 2 snap into the limit groove on the rib 1 to prevent the rib 1 and rib 2 from sliding off when they are tilted;

[0020] S3. When the length of the unidirectional geogrid in the weft direction is insufficient, buckle the connection buckle 2 of the rib 2 on the extended grid thin plate with the connection buckle 1 on the rib 2 of the already laid grid thin plate, and the laying direction of the grid thin plate in the weft direction is from the connection buckle 1 to the connection buckle 2, which is convenient for the connection buckle 2 on the newly laid grid thin plate to buckle with the connection buckle 1 and press the connection buckle 1;

[0021] S4. When the connection buckle 2 is buckled with the connection buckle 1, the convex block arranged on the connection buckle 2 abuts against the adjacent rib 2, so that the rib 2 contracts along the deformation groove direction and drives the limit block to displace, so as to be clamped with the limit groove on the rib 1.

[0022] Beneficial effects

[0023] The technical solution provided by the present invention has the following beneficial effects compared with the known prior art:

[0024] Through the cooperation of rib 1 and rib 2 on the grid thin plate, the present invention facilitates the laying in the warp direction. Through the cooperation of connection buckle 2 on rib 2 and connection buckle 1 on the adjacent rib 2, it is convenient for widening the laying in the weft direction. Through the limit block 1 and limit block 2 with different orientations on rib 2, it is possible to prevent the situation that rib 1 and rib 2 slide in the weft direction and fall off. Through the convex block on connection buckle 2 cooperating with the deformation groove on rib 2, when widening the laying in the weft direction, the convex block on connection buckle 2 extends into the installation groove on rib 1 to prevent connection buckle 1 and connection buckle 2 from falling off, and at the same time, it squeezes rib 2 to deform and drives the limit block to be stuck on rib 1, which improves the stability again. And during the installation and laying process, the splicing of the unidirectional plastic tensile geogrid in the warp and weft directions is greatly increased, the use of U-shaped nails is greatly reduced, and the workload during laying and disassembly is reduced. Brief description of the drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is the flowchart of the method of the present invention;

[0027] Figure 2 It is the overall structure diagram of the present invention;

[0028] Figure 3 Schematic diagram of rib one of the present invention;

[0029] Figure 4 Schematic diagram of rib two of the present invention;

[0030] Figure 5 Front view of rib two of the present invention;

[0031] Figure 6 Schematic diagram of the connection structure between rib one and rib two of the present invention;

[0032] Figure 7 Partial cross-sectional view of the connection structure between rib one and rib two of the present invention;

[0033] Figure 8 Right view of the connection between rib one and rib two of the present invention;

[0034] Figure 9 Schematic diagram of the connection structure between connecting buckle one and connecting buckle two of the present invention;

[0035] Figure 10 Front view of connecting buckle one and connecting buckle two of the present invention.

[0036] Description of reference numerals in the figure: 100, grille thin plate; 101, first punching hole; 102, second punching hole; 200, rib one; 201, first installation groove; 202, limiting groove; 300, rib two; 301, second installation groove; 302, deformation groove; 303, first limiting block; 304, second limiting block; 310, connecting buckle one; 311, trapezoidal card slot; 320, connecting buckle two; 321, convex block; 322, extrusion groove. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] The present invention will be further described below with reference to the embodiments.

[0039] Embodiment:

[0040] A unidirectional plastic stretched geogrid comprises a grid sheet 100 and ribs 1 200 and ribs 2 300 arranged on both sides of the grid sheet 100 for longitudinally connecting multiple grid sheets 100. Multiple groups of grid sheets 100 are connected by ribs 1 200 and ribs 2 300 to form long strips, which can be rolled up for easy storage and transportation.

[0041] Specifically, the top surface of the rib 200 is flush with the top surface of the grid sheet 100, and the bottom surface of the rib 2 300 is flush with the bottom surface of the grid sheet 100. This facilitates later repairs by interlocking the two groups of ribs 200 on the new unidirectional plastic stretch geogrid with the two groups of ribs 2 300 at the location to be repaired, thereby covering the damaged area for repair. When extending, the rib 200 on the new unidirectional plastic stretch geogrid is interlocked with the rib 2 300 at the location to be lengthened to complete the extension. A few U-shaped nails are used for fixing, which simplifies the installation steps and reduces the use of U-shaped nails, facilitates subsequent disassembly and reduces the workload during disassembly.

[0042] A plurality of groups of through holes arranged in parallel are provided on the grid sheet 100, and each group of through holes includes a first punching hole 101 and a second punching hole 102 of different sizes, the size of the first punching hole 101 is larger than the size of the second punching hole 102, and the first punching holes 101 and the second punching holes 102 on adjacent through holes are staggered, wherein the number of through hole groups on the grid sheet 100 is an even number, and the first punching holes 101 and the second punching holes 102 are symmetrically close to the rib 1 200 and the rib 2 300, so as to stagger the reinforcing ribs on the grid sheet 100 in disguised form. Compared with the unidirectional plastic tensile geogrid currently on the market, this prevents the problem of small local tensile strength and easy breakage in the middle, and improves the tensile strength of the middle and overall ends of the grid sheet 100.

[0043] The rib 1 200 is used to buckle with the rib 2 300 on the adjacent grating sheet 100 when the grating sheet 100 is damaged or needs to be extended. The rib 1 200 is provided with a mounting groove 1 201 and a plurality of limiting grooves 202. The limiting grooves 202 are evenly distributed on the rib 1 200 and are located in the mounting groove 1 201. The mounting groove 1 201 is used to cooperate and fix with the rib 2 300. The plurality of limiting grooves 202 are used to prevent the rib 1 200 and the rib 2 300 from sliding and falling off, thereby improving stability.

[0044] The second rib 300 includes an installation groove 301, a first connecting buckle 310 and a second connecting buckle 320 which are arranged on the second rib 300 and located on both sides of the opening of the installation groove 301 for weft fixing. Through the first connecting buckle 310 and the second connecting buckle 320, it is convenient to connect the unidirectional plastic tensile geogrid for widening with the already fixed grid thin plate 100. There are multiple groups of limiting blocks on the second rib 300 to prevent the first rib 200 and the second rib 300 from sliding relative to each other. The limiting blocks are used to prevent the first rib 200 and the second rib 300 from sliding. A deformation groove 302 is arranged on the second rib 300 and located between multiple groups of limiting blocks to reserve a deformation space for the second rib 300, which can reserve a deformation space for the second rib 300. When the second rib 300 is subjected to weft pressure, it squeezes the deformation groove 302 and drives the limiting blocks, thereby strengthening the fixation with the first rib 200. There is a convex block 321 on the second connecting buckle 320 for squeezing the second rib 300 to contract and deform along the deformation groove 302.

[0045] Specifically, the limiting blocks include a first limiting block 303 and a second limiting block 304 which are arranged alternately on the second rib 300, and the deformation groove 302 is located between the first limiting block 303 and the second limiting block 304. The area of the limiting groove 202 on the first rib 200 is the same as the projected area of the limiting blocks, which is convenient for the first limiting block 303 and the second limiting block 304 to extend into the limiting groove 202. Since the first limiting block 303 and the second limiting block 304 are inclined rectangular shapes and the inclination directions of the first limiting block 303 and the second limiting block 304 are opposite, when the second rib 300 is subjected to extrusion deformation, the first limiting block 303 or the second limiting block 304 will squeeze the first rib 200, thereby increasing the stability between the first rib 200 and the second rib 300.

[0046] Furthermore, the deformation groove 302 is a semi-cylindrical groove. Compared with a rectangular groove, the internal tensile performance of the semi-cylindrical groove is better, which is used to enhance the tensile strength of the inner wall of the deformation groove 302 and is not easy to break.

[0047] Among them, both the first installation groove 201 and the second installation groove 301 are right trapezoidal grooves, so that after the first rib 200 and the second rib 300 are buckled, when subjected to tensile force and when the grid thin plate 100 deforms, they will become tighter and tighter and will not fall off easily.

[0048] In addition, the first connecting buckle 310 is provided with a trapezoidal card slot 311 for the end of the second connecting buckle 320 away from the second rib 300 to extend into, and the second connecting buckle 320 is provided with an extrusion groove 322 for the end of the first connecting buckle 310 away from the second rib 300 to extend into, which is convenient for the first connecting buckle 310 and the second connecting buckle 320 to be buckled with each other. The convex block 321 is located on the side of the second connecting buckle 320 away from the second rib 300 and close to the adjacent first rib 200, and is used for the second rib 300 to squeeze the convex block 321 during weft connection, thereby causing local deformation of the second rib 300, increasing the pressure between the first rib 200 and the second rib 300 and improving the stability.

[0049] It should be noted that the dimensional relationship between L1 on the connecting buckle two 320 and L2 and L3 on the connecting buckle one 310 is L1 < L3, and L1 > L2. After the connecting buckle two 320 is buckled into the connecting buckle one 310, the greater the extrusion force of the soil, the tighter the buckle. The size of H1 is greater than the size of H2. During installation, the connecting buckle two 320 extends into the trapezoidal card slot 311 for latitudinal fixation. When the grid thin plate 100 undergoes extrusion deformation, the connecting buckle one 310 is snapped into the extrusion slot 322 on the connecting buckle two 320, and at the same time, the extrusion bump 321 strengthens the stability between the first rib 200 and the second rib 300.

[0050] A method for using a unidirectional plastic tensile geogrid, which is applied to the above-mentioned unidirectional plastic tensile geogrid. The method includes the following steps:

[0051] S1. Lay the unidirectional geogrid on the required area by means of the grid thin plate 100 in cooperation with multiple groups of the first ribs 200 and the second ribs 300;

[0052] S2. When the longitudinal length of the unidirectional geogrid is insufficient, buckle the first rib 200 on the extended grid thin plate 100 with the second rib 300 on the already laid grid thin plate 100, and make the limiting block one 303 and the limiting block two 304 on the second rib 300 snap into the limiting slot 202 on the first rib 200 to prevent the first rib 200 and the second rib 300 from sliding off when they are inclined;

[0053] S3. When the latitudinal length of the unidirectional geogrid is insufficient, buckle the connecting buckle two 320 of the second rib 300 on the extended grid thin plate 100 with the connecting buckle one 310 of the second rib 300 on the already laid grid thin plate 100, and the latitudinal laying direction of the grid thin plate 100 is from the connecting buckle one 310 to the connecting buckle two 320 for laying, which is convenient for the connecting buckle two 320 on the newly laid grid thin plate 100 to be buckled with the connecting buckle one 310 and press the connecting buckle one 310;

[0054] S4. When the connecting buckle two 320 is buckled with the connecting buckle one 310, the bump 321 provided on the connecting buckle two 320 abuts against the adjacent second rib 300, so that the second rib 300 contracts along the deformation groove 302 direction and drives the limiting block to displace, so as to be clamped with the limiting slot 202 on the first rib 200.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A unidirectional plastic tensile geogrid, characterized in that, It includes a grid thin plate (100), a first rib (200) and a second rib (300) arranged on both sides of the grid thin plate (100) for meridionally connecting multiple grid thin plates (100); Multiple groups of through holes are arranged in parallel on the grid thin plate (100), and each group of through holes includes a first punching hole (101) and a second punching hole (102) with different sizes. The first punching holes (101) and the second punching holes (102) on adjacent through holes are arranged staggeredly; The first rib (200) is used for buckling with the second rib (300) on an adjacent grid thin plate (100) when the grid thin plate (100) is damaged. An installation groove one (201) and multiple groups of limiting grooves (202) are arranged on the first rib (200). The limiting grooves (202) are equidistantly distributed on the first rib (200) and are located within the installation groove one (201); The second rib (300) includes an installation groove two (301), a first connecting buckle (310) and a second connecting buckle (320) arranged on the second rib (300) and located on both sides of the opening of the installation groove two (301) for weftwise fixing. Multiple groups of limiting blocks for preventing the first rib (200) and the second rib (300) from sliding relative to each other are arranged on the second rib (300), and a deformation groove (302) for reserving a deformation space for the second rib (300) is arranged on the second rib (300) and located between multiple groups of limiting blocks. A convex block (321) for extruding the second rib (300) to contract and deform along the deformation groove (302) is arranged on the second connecting buckle (320).

2. The one-way plastic tensile geogrid according to claim 1, wherein, The top surface of the first rib (200) is flush with the top surface of the grid thin plate (100), and the bottom surface of the second rib (300) is flush with the bottom surface of the grid thin plate (100).

3. The one-way plastic tensile geogrid according to claim 1, wherein, The number of groups of through holes on the grid thin plate (100) is an even number, which is used for the first punching hole (101) and the second punching hole (102) to symmetrically approach the first rib (200) and the second rib (300), so as to improve the tensile strength at the middle end of the grid thin plate (100).

4. A unidirectional plastic tensile geogrid according to claim 1, characterized in that, The limiting blocks include a first limiting block (303) and a second limiting block (304) arranged staggeredly on the second rib (300), and the deformation groove (302) is located between the first limiting block (303) and the second limiting block (304). The first limiting block (303) and the second limiting block (304) are in an inclined rectangular shape, and the inclined directions of the first limiting block (303) and the second limiting block (304) are opposite.

5. A unidirectional plastic tensile geogrid according to claim 1, characterized in that, The deformation groove (302) is a semi-cylindrical groove, which is used to enhance the tensile strength of the inner wall of the deformation groove (302) and is not easy to break.

6. A unidirectional plastic tensile geogrid according to claim 1, characterized in that, Both the installation groove one (201) and the installation groove two (301) are right trapezoidal grooves.

7. A unidirectional plastic tensile geogrid according to claim 1, characterized in that, A trapezoidal card slot (311) for the end of the second connecting buckle (320) away from the second rib (300) to extend into is arranged on the first connecting buckle (310). An extrusion groove (322) for the end of the first connecting buckle (310) away from the second rib (300) to extend into is arranged on the second connecting buckle (320). The convex block (321) is located on the side of the second connecting buckle (320) away from the second rib (300) and close to the adjacent first rib (200).

8. A unidirectional plastic tensile geogrid according to claim 7, characterized in that, The dimensional relationship between L1 on the second connecting buckle (320) and L2 and L3 on the first connecting buckle (310) is that L1 < L3 and L1 > L2, and the dimension of H1 is greater than that of H2. During installation, the second connecting buckle (320) is inserted into the trapezoidal card slot (311) for weft fixation, and when the grid thin plate (100) is subjected to extrusion deformation, the first connecting buckle (310) is clamped into the extrusion groove (322) on the second connecting buckle (320).

9. A method for using a unidirectional plastic tensile geogrid, which is applied to a unidirectional plastic tensile geogrid as described in any one of claims 1-8, characterized in that, The usage method includes the following steps: S1. The unidirectional geogrid is laid on the required area by matching the grid thin plate (100) with multiple groups of the first ribs (200) and the second ribs (300). S2. When the longitudinal length of the unidirectional geogrid is insufficient, the first ribs (200) on the extended grid thin plate (100) are buckled with the second ribs (300) on the already laid grid thin plate (100), and the first limit block (303) and the second limit block (304) on the second ribs (300) are clamped into the limit groove (202) on the first ribs (200) to prevent the first ribs (200) and the second ribs (300) from sliding off when tilted. S3. When the weft length of the unidirectional geogrid is insufficient, the second connecting buckle (320) on the second ribs (300) of the extended grid thin plate (100) is buckled with the first connecting buckle (310) on the second ribs (300) of the already laid grid thin plate (100), and the weft laying direction of the grid thin plate (100) is from the first connecting buckle (310) to the second connecting buckle (320), which is convenient for the second connecting buckle (320) on the newly laid grid thin plate (100) to be buckled with the first connecting buckle (310) and press the first connecting buckle (310). S4. When the second connecting buckle (320) is buckled with the first connecting buckle (310), the convex block (321) arranged on the second connecting buckle (320) abuts against the adjacent second ribs (300), so that the second ribs (300) contract along the direction of the deformation groove (302) and drive the limit block to displace, so as to be clamped tightly with the limit groove (202) on the first ribs (200).

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