Super-grid chamber

Abstract

The utility model belongs to the technical field of geocells, and particularly relates to a super-cell, the basic unit of the super-cell is a hexa-chiral structure cell, the hexa-chiral structure cell comprises a support center and six chiral ligaments, the support center is a rigid cylinder, and the chiral ligaments are tangent to the outer wall of the support center and are rotationally symmetrical about the support center; the adjacent six-chiral structure cell elements are integrally connected through chiral ligaments to form a honeycomb-shaped single-piece geocell, and the single-piece geocell is provided with an edge clamping assembly and a vertex clamping assembly. The six-chiral structure adopted by the utility model has isotropy, the chiral connecting rod structure can rotate and contract inwards when the six-chiral structure is impacted, and an obvious negative Poisson's ratio effect is generated; the butt joint assembly process is simplified through the edge clamping assemblies and the vertex clamping assemblies, flexible splicing assembly can be achieved according to requirements in the using process, and the application range of the negative poisson ratio material in the geotechnical field is expanded.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of geocell, specifically relates to a super cell. BACKGROUND

[0002] Negative Poisson's ratio (NPR) material is also called auxetic material, and when being stretched / compressed in the longitudinal direction, the cross section presents expansion / contraction deformation, and the mechanical response is completely opposite to that of common positive Poisson's ratio material, and the negative Poisson's ratio material has many excellent performances such as high energy absorption, strong fracture toughness, indentation resistance, shear resistance, curved surface homodirectional and sound absorption and noise reduction, and has a wide application prospect in the fields of aerospace engineering, automobile engineering, biomedical engineering and sports protection.

[0003] At present, the application of negative Poisson's ratio material in geotechnical material is not wide enough, the Chinese patent with the publication number CN207919530U discloses a geogrid with negative Poisson's ratio effect, and when external load acts, the node sleeve is deformed in the thickness direction through the slippage of the small node in the node sleeve, so that the negative Poisson's ratio structural effect is generated, however, the negative Poisson's ratio structural effect generated by the local expansion and contraction of the node sleeve is not enough significant; the Chinese patent with the publication number CN116335757A discloses a negative Poisson's ratio structure filling retaining wall and a construction method thereof, and the negative Poisson's ratio structural effect is realized by the rotation of the rotation rigid body connected through the flexible hinge, the structure is complex and does not have isotropic negative Poisson's ratio effect, and the external load application direction needs to be considered during paving, and there is certain limitation.

[0004] Therefore, in order to solve the above problems, a more related facility meeting the use demand needs to appear. INVENTION CONTENTS

[0005] Therefore, the purpose of the utility model is to provide a super cell to solve the problems of insufficient negative Poisson's ratio structural effect and anisotropy of the existing geotechnical negative Poisson's ratio material, so as to expand the application of negative Poisson's ratio material in geotechnical material.

[0006] Based on the above purpose, the utility model provides a super cell, which comprises a single-block cell main body, the single-block cell main body is a honeycomb structure and the basic unit is a six-chiral structure cell, the six-chiral structure cell comprises a support center and a chiral ligament, an edge clamping assembly is arranged at the edge of the single-block cell main body, a vertex clamping assembly is arranged at the vertex of the single-block cell main body, and the edge clamping assembly and the clamping assembly are used for splicing the single-block cell main body to form a geocell with a required size.

[0007] Further, the support center is a rigid cylinder, the chiral ligament is a flat link tangent to the outer circumference of the support center, each six-chiral structure cell includes six chiral ligaments that are rotationally symmetric relative to the support center, the included angle between adjacent chiral ligaments is 60°, the support center and the chiral ligament have the same thickness and are both polyester materials, six identical six-chiral structure cells are arranged adjacent to a single six-chiral structure cell, the chiral ligaments of adjacent six-chiral structure cells are integrally connected, and the six-chiral structure cells are closely arranged to form a central structure of a single block cell body.

[0008] Through the above technical solution, the polyester fiber can provide good tensile strength and elastic modulus for enhancing the performance of the geocell, the ligament of the six-chiral structure cell will bend and deform when under pressure, and will also be compressed in the non-pressure direction, showing a negative Poisson's ratio characteristic, and in addition, the six-chiral structure cell is isotropic.

[0009] Further, the edge clamping assembly includes an edge clamping block and an edge clamping groove, the edge clamping block is arranged at the left and front edges of the single block cell body, the edge clamping block includes a first rigid cylinder and a plurality of first protrusions arranged on the side wall of the first rigid cylinder, the diameter of the first rigid cylinder is consistent with the inner diameter of the support center, the edge clamping groove is arranged at the right and rear edges of the single block cell body, the cross section of the edge clamping groove is in the shape of a circular arc, and a first groove is arranged on the inner side of the edge clamping groove; the vertex clamping assembly includes a vertex clamping block, the vertex clamping block is arranged at the upper left vertex of the single block cell body, the vertex clamping block includes a second rigid cylinder and a plurality of second protrusions arranged on the side wall of the second rigid cylinder, the diameter of the second rigid cylinder is consistent with the inner diameter of the support center, a first vertex clamping groove is arranged at the lower left vertex of the single block cell body, a second vertex clamping groove is arranged at the lower right vertex of the single block cell body, and a third vertex clamping groove is arranged at the upper right vertex of the single block cell body.

[0010] Through the above technical solution, the design of the edge clamping assembly and the vertex clamping assembly makes the geocell have the characteristics of modularity, and adjacent single block cell bodies are self-connected through the edge clamping assembly and the vertex clamping assembly to expand the assembly area as needed.

[0011] Further, the first protrusion is provided with a first barb at the bottom, the height of the first groove is the sum of the heights of the first barb and the first protrusion, and a first barb groove matched with the first barb is arranged at the bottom of the first groove; the second protrusion is provided with a second barb at the bottom, the first vertex clamping groove, the second vertex clamping groove and the third vertex clamping groove are spliced to form a cylindrical structure, a second groove is arranged on the inner side of the cylindrical structure, the height of the second groove is the sum of the heights of the second barb and the second protrusion, and a second barb groove matched with the second barb is arranged at the bottom of the second groove.

[0012] Through the above technical scheme, the design of the convex blocks and the grooves makes the splicing between the single-piece cell bodies more efficient and convenient, and the design of the barbs cooperates with the position limitation of the adjacent single-piece cell bodies to prevent the separation of the units.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1. The super cell of the utility model takes six chiral structure cells as basic units, when the six chiral structure is impacted, the chiral link structure will rotate and contract inward, and obvious negative Poisson's ratio effect is generated, the six chiral structure cell has isotropy, and the stress stability in each direction is ensured.

[0015] 2. The super cell of the utility model adopts modular design, the corresponding two side edges are matched with each other, the matching design of the grooves and the convex blocks simplifies the butt joint assembly process, and the flexible splicing and assembly can be carried out according to requirements in use, and the application of the negative Poisson's ratio material in the geotechnical field is expanded. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of the six chiral structure cell and compression deformation of the embodiment of the utility model;

[0017] Figure 2 It is a structure schematic view of the single-piece geotechnical cell and combined assembly of the embodiment of the utility model;

[0018] Figure 3 It is a detailed structure schematic view of edge connection of the embodiment of the utility model;

[0019] Figure 4 It is a detailed structure schematic view of vertex connection of the embodiment of the utility model;

[0020] In the drawing, 1 is a support center, 2 is a chiral ligament, 3 is an edge clamping block, 301 is a first rigid cylinder, 302 is a first convex block, 303 is a first barb, 4 is an edge clamping groove, 401 is a first groove, 402 is a first barb groove, 5 is a vertex clamping block, 501 is a second rigid cylinder, 502 is a second convex block, 503 is a second barb, 601 is a first vertex clamping groove, 602 is a second vertex clamping groove, 603 is a third vertex clamping groove, 604 is a second groove, 605 is a second barb groove, l is the sum of the lengths of the two chiral ligaments 2, t is the thickness of the chiral ligament 2, and β is the radial angle between the chiral ligament 2 and the support center 1. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the utility model more clear and explicit, the utility model is further described in detail in combination with specific embodiments.

[0022] The basic unit of the supercellular chamber is a six-chiral structure cell, as shown in the drawings. Figure 1 The six-chiral structure cell is composed of a support center 1 and six chiral ligaments 2. The support center 1 is a rigid cylinder, and the chiral ligaments 2 are tangent to the outer wall of the support center 1. The angle between adjacent chiral ligaments 2 is 60°. The support center 1 and the chiral ligaments 2 have the same thickness and are both made of polyester material. Adjacent six-chiral structure cells are integrally connected through the chiral ligaments 2.

[0023] The working process and principle of the embodiment are as follows: when subjected to compression impact, the chiral ligaments 2 will rotate and contract inward. Not only the force direction, but also the non-force direction will be compressed and deformed, producing a significant negative Poisson's ratio effect. The Poisson's ratio of the structure is:

[0024] ,

[0025] Wherein: ν is the Poisson's ratio, l is the sum of the lengths of the two chiral ligaments 2; t is the thickness of the chiral ligament 2, and β is the radial angle between the chiral ligament 2 and the support center 1.

[0026] As shown in the drawings, Figure 2 The six-chiral structure cells are closely and regularly arranged to form a single-piece geocell with a honeycomb structure. The left and front edges of the geocell are provided with edge clamping blocks 3, and the right and rear edges are provided with edge clamping grooves 4 matched with the edge clamping blocks 3. A vertex clamping block 5 is arranged at the top left vertex of the geocell. First, second, and third vertex clamping grooves 601, 602, and 603 are arranged at the lower left, lower right, and upper right vertices, respectively. The cylindrical structure formed by splicing the first, second, and third vertex clamping grooves 601, 602, and 603 is matched with the vertex clamping block 5. The single-piece geocell can be combined into the required size by splicing the corresponding edges and vertices.

[0027] As shown in the drawings, Figure 3 The edge clamping block 3 includes a first rigid cylinder 301 and two first protrusions 302 fixed to the upper and lower sides of the side wall of the first rigid cylinder 301. The diameter of the first rigid cylinder 301 is consistent with the inner diameter of the support center 1. The bottom of the first protrusion 302 is fixedly connected with a first barb 303. A first recess 401 is formed in the inner wall of the edge clamping groove 4. The height of the first recess 401 is equal to the sum of the heights of the first protrusion 302 and the first barb 303. A first barb groove 402 matched with the first barb 303 is formed in the bottom of the first recess 401. Figure 4As shown, the vertex clamping block 5 comprises a second rigid cylinder 501 and two second protrusions 502 fixed on the upper and lower side walls of the second rigid cylinder 501, the diameter of the second rigid cylinder 501 is consistent with the inner diameter of the support center 1, the bottom of the second protrusion 502 is fixedly connected with a second barb 503, the first vertex clamping groove 601, the second vertex clamping groove 602 and the third vertex clamping groove 603 are spliced into a cylindrical structure, and a second groove 604 is formed in the inner side of the cylindrical structure, the height of the second groove 604 is consistent with the sum of the heights of the second protrusion 502 and the second barb 503, and a second barb groove 605 is formed in the bottom of the second groove 604 and is matched with the second barb 503.

[0028] When assembling and combining around a single piece of geocell as the center, the four edges are spliced first, specifically, the first protrusion 302 and the first barb 303 are aligned and embedded in the corresponding first groove 401, then the first barb 303 is embedded in the first barb groove 402 by pushing down, and the edge splicing is completed at the same time as the partial splicing at the vertex; then the corresponding single piece of geocell is filled in the blank part in the order of edge first and vertex second; the laying of the whole piece of geocell reinforcing area is completed by repeating the above steps.

Claims

1. A hypercell comprising a monolithic cell body, characterized in that, The single block cell body is a honeycomb structure and the basic unit is a six-handed structure cell, the six-handed structure cell comprises a support center (1) and a chiral ligament (2), the single block cell body edge is provided with an edge clamping assembly, and the single block cell body vertex is provided with a vertex clamping assembly.

2. The supercell according to claim 1, characterized in that The support center (1) is a rigid cylinder, and the chiral ligament (2) is a flat link tangent to the outer circumference of the support center (1), each six-handed structure cell comprises six chiral ligaments (2) which are rotationally symmetrical relative to the support center (1), the included angle between adjacent chiral ligaments (2) is 60°, the thickness of the support center (1) and the chiral ligament (2) is consistent, and the support center (1) and the chiral ligament (2) are both polyester materials.

3. The supercell according to claim 2, wherein The adjacent six-handed structure cells are integrally connected, and the six-handed structure cells are closely arranged to form the center structure of the single block cell body.

4. The supercell according to claim 1, wherein The edge clamping assembly comprises an edge clamping block (3) and an edge clamping groove (4), the edge clamping block (3) is arranged on the left and front edges of the single block cell body, the edge clamping block (3) comprises a first rigid cylinder (301) and a plurality of first protrusions (302) arranged on the side wall of the first rigid cylinder (301), the diameter of the first rigid cylinder (301) is consistent with the inner diameter of the support center (1), the edge clamping groove (4) is arranged on the right and rear edges of the single block cell body, the cross section of the edge clamping groove (4) is in the shape of an arc, and a first recess (401) is arranged on the inner side of the edge clamping groove (4).

5. The supercell according to claim 4, wherein The bottom of the first protrusion (302) is provided with a first barb (303), the height of the first recess (401) is the sum of the height of the first barb (303) and the height of the first protrusion (302), and the bottom of the first recess (401) is provided with a first barb groove (402) matched with the first barb (303).

6. The supercell according to claim 1, wherein The vertex clamping assembly comprises a vertex clamping block (5), the vertex clamping block (5) is arranged at the upper left vertex of the single block cell body, the vertex clamping block (5) comprises a second rigid cylinder (501) and a plurality of second protrusions (502) arranged on the side wall of the second rigid cylinder (501), the diameter of the second rigid cylinder (501) is consistent with the inner diameter of the support center (1), a first vertex clamping groove (601) is arranged at the lower left vertex of the single block cell body, a second vertex clamping groove (602) is arranged at the lower right vertex of the single block cell body, and a third vertex clamping groove (603) is arranged at the upper right vertex of the single block cell body.

7. The supercell according to claim 6, characterized in that The bottom of the second protrusion (502) is provided with a second barb (503), the first vertex clamping groove (601), the second vertex clamping groove (602) and the third vertex clamping groove (603) are spliced to form a cylindrical structure, the inner side of the cylindrical structure is provided with a second recess (604), the height of the second recess (604) is the sum of the height of the second barb (503) and the height of the second protrusion (502), and the bottom of the second recess (604) is provided with a second barb groove (605) matched with the second barb (503).

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