Geocell with self-locking structure

Abstract

The utility model provides a kind of geocell with self-locking structure, with multiple groups of first strip and second strip formed with connecting node;Connecting node position has multiple slits arranged along height direction interval, and the strip on both sides of slit is bent out along opposite direction, so that connecting node position encloses hollow cylinder extending along height direction;Connecting node is wrapped by setting glue, and in the process of injecting glue, it is filled in hollow cylinder, due to the injection gap between first strip and second strip, glue is also filled between injection gap, from the transverse direction of connecting node, it forms the multi-layer structure of multiple layers arranged by glue and strip, forms the combination structure of stable strip and glue, and the strip and glue are integrated, when first strip and second strip are pulled, the strip and glue are pressed tightly, the glue in central cylinder effectively avoids the strip from being pulled out from node position, and improves the reliability and durability of engineering application.

Description

Technical Field

[0001] This utility model relates to the field of geocell technology, and more specifically, to a geocell with a self-locking structure. Background Technology

[0002] Geocells are three-dimensional honeycomb-like grid structures formed by connecting high-strength plastic strips, used to reinforce slopes and prevent slope collapse, erosion, and washout. By laying geocells on the slope surface and filling them with soil, gravel, or other fillers, a stable protective layer is formed.

[0003] When subjected to axial tension, geocell strips fracture at the nodes, exhibiting strip-like tearing failure at the fracture surface. The main reason is that riveting requires fixing with rivets, which necessitates drilling holes in the geocell strips. Stress concentration easily occurs at the drilling points, leading to tearing failure of the strips under axial load.

[0004] Therefore, how to improve the structural strength of geocell nodes is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention provides a geocell with a self-locking structure to improve the structural strength of the geocell nodes.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A geocell with a self-locking structure, having a first strip and a second strip forming a connecting node;

[0008] The connecting node has multiple slits spaced apart along the node axis. The strips on both sides of the slits are bent along the thickness direction of the strips to form a first bent part and a second bent part. The first bent part and the second bent part are stacked alternately to form a hollow cylinder extending along the node axis.

[0009] The first strip and the second strip located on the same radial side of the hollow cylinder are stacked, and there is an injection gap between the stacked first strip and the second strip;

[0010] A shaping adhesive is provided at the connection node position. The shaping adhesive fills the gap between the hollow cylinder and the glue injection and wraps the outer surface of the connection node.

[0011] Preferably, in the above-mentioned geocell with a self-locking structure, the strips located on the same radial side of the hollow cylinder are all strips with an arc-shaped surface structure.

[0012] Preferably, in the above-mentioned geocell with a self-locking structure, the strips located on the same radial side of the hollow cylinder are all strips with a rhombic surface structure.

[0013] Preferably, in the geocell with the self-locking structure described above, among the inner strip and the outer strip located on the same radial side of the hollow cylinder, the inner strip is a strip with a rhomboid surface structure and the outer strip is a strip with an arc-shaped surface structure.

[0014] Preferably, in the geocell with the self-locking structure described above, the first strip and the second strip have a connecting portion connected to the outer peripheral surface of the hollow cylinder, and there is a transition gap between the first strip and the second strip located between the connecting portions.

[0015] Preferably, in the geocell with the self-locking structure described above, the connecting node includes one, two or more hollow cylinders, and an injection gap is arranged between the first strip and the second strip in each hollow cylinder.

[0016] Preferably, in the geocell with the self-locking structure, the hollow cylinder is further filled with a central column, the central column is a cavity structure, and the wall of the central column is also provided with an injection hole that penetrates its thickness direction.

[0017] One or both sides of the central column along its length are provided with an overlapping edge structure that overlaps the hollow cylinder.

[0018] Preferably, in the geocell with the self-locking structure described above, the first strip and the second strip are HDPE strips, PP strips or PET strips.

[0019] Preferably, in the above-mentioned geocell with a self-locking structure, the sizing colloid is injection molded from one or more materials selected from TPE, TPR, TPU, EVA, EMA, EEA, PVC, PP, PE, HDPE, SBS, ABS, PA6, PA12, TPEE, and EBA.

[0020] Preferably, in the geocell with the self-locking structure described above, the portions of the first strip and the second strip extending beyond the connecting node are tightly fitted together in the thickness direction; or,

[0021] The first strip and the second strip have an opening angle between them, which is set by the location of the connecting node, and the opening angle is between 0° and 160°.

[0022] The geocell with a self-locking structure provided by this utility model has a first strip and a second strip with connecting nodes. The connecting node has multiple slits arranged at intervals along the node axis. The strips on both sides of the slits are bent and extended in opposite directions, so that the connecting node forms a hollow cylinder extending along the node axis. The geocell has a honeycomb mesh structure formed by multiple intersecting strips. Each grid is formed by the first strip and the second strip forming a connecting node. Multiple slits along the node axis are designed on the strips at the connecting node. The slits also penetrate the thickness direction of the strips. These slits make the strips at the node form multiple parallel slit strips. The adjacent strips on both sides of the slits are bent in opposite directions to form a first bent part and a second bent part. From the node axis direction of the strips, the first bent part and the second bent part are staggered and superimposed. The central area of ​​the connecting node forms a hollow cylinder with a cylindrical structure.

[0023] The connecting nodes are wrapped with a shaped colloid. During the colloid injection process, the colloid fills the hollow cylinder. Simultaneously, due to the colloid injection gap between the first and second strips, the colloid also fills the injection gap. Thus, from the cross-sectional direction of the connecting node, a multi-layered structure of colloid and strips is formed, resulting in a stable combination structure of strips and colloid. The strips and colloid are bonded together as a whole. When the first and second strips are stretched, the strips and colloid are pressed together, and the colloid in the central cylinder effectively prevents the strips from being pulled out from the node position. This not only enhances the overall stiffness and bearing capacity of the geocell, but also optimizes its interaction performance with the soil, effectively improving the reliability and durability of engineering applications. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 Axonometric view of a geocell with a self-locking structure provided for this application;

[0026] Figure 2 for Figure 1 Structural diagram showing the direction of the top struts in the geocell;

[0027] Figure 3 for Figure 2 A cross-sectional view of the geocell along the AA direction;

[0028] Figure 4 for Figure 1Schematic diagram of the strip layout of geocells;

[0029] Figure 5 for Figure 4 Axonometric view of the strip arrangement of geocells;

[0030] Figure 6 for Figure 4 Schematic diagram of the top structure of the geocell. Detailed Implementation

[0031] This utility model discloses a geocell with a self-locking structure to improve the structural strength of geocell nodes.

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0033] like Figure 1 and Figure 2 As shown, Figure 1 Axonometric view of a geocell with a self-locking structure provided for this application; Figure 2 for Figure 1 Structural diagram showing the direction of the top struts in the geocell; Figure 3 for Figure 2 A cross-sectional view of the geocell along the AA direction; Figure 4 for Figure 1 Schematic diagram of the strip layout of geocells; Figure 5 for Figure 4 Axonometric view of the strip arrangement of geocells; Figure 6 for Figure 4 Schematic diagram of the top structure of the geocell.

[0034] In the geocell with a self-locking structure provided in this embodiment, the geocell is composed of multiple sets of intersecting first strips 1 and second strips 2, and the intersection of the first strip 1 and the second strip 2 forms a connecting node 3.

[0035] The connecting node 3 has multiple slits 4 spaced apart along the node axis. The first strip 1 and the second strip 2 are arranged close to each other at the connecting node. From the perspective of the strip's long strip structure, the node axis is the width direction of the strip. Each slit 4 is formed on the strip through the thickness direction, and the multiple slits 4 are spaced apart along the node axis. After the slit action is performed on the strip, the strip is divided into multiple layers in the width direction by the slits 4. The strip portions on both sides of the slit 4 are bent along the thickness direction of the strip to form a first bent portion 41 and a second bent portion 42. The first bent portion 41 and the second bent portion 42 are staggered and overlapped. From one side of the node axis, they together form a hollow cylinder 7 extending along the node axis.

[0036] Specifically, during the molding process, the mold ejector pin extends along the width direction of the strip and abuts against the first strip 1 and the second strip 2 in the radial direction and the same thickness direction. The mold ejector pins are arranged in opposite directions along the node axis. Under the action of the supporting force, the strip portions on both sides of the cut 4 bend to opposite sides. The first bent portion 41 and the second bent portion 42 formed by the bending of the first strip 1 and the second strip 2 are staggered along the node axis, that is, the first bent portion 41 and the second bent portion 42 are mutually embedded in the axial gap between adjacent bent structures, and vice versa, thereby forming the wall structure of the hollow cylinder 7. The cross-section of the hollow cylinder 7 can be circular, elliptical, or polygonal; in this embodiment, a rhombus shape is used as an example.

[0037] A first strip 1 and a second strip 2 are stacked on the same radial side of the hollow cylinder 7. The radial side is based on the axis of the hollow cylinder 7, and the same radial side refers to the strip area located on the same radial side of the axis of the hollow cylinder 7 and extending outward from that side. There is an injection gap 8 between the stacked first strip 1 and the second strip 2. The injection gap 8 is axially continuous along the node, providing a channel for subsequent injection of adhesive.

[0038] The first strip 1 and the second strip 2, which form the same injection gap 8, are pre-formed with a certain forming gap at both ends of the first strip 1 and the second strip 2 at the mold exit position in the length direction during molding. When the mold ejector pushes out of the strips on both sides of the cut, the two strips bend synchronously. After bending, the forming gap is retained between the first strip 1 and the second strip 2. During injection, the injection gap 8 is formed between the two strips.

[0039] A shaping colloid 9 is provided at the connection node 3. The shaping colloid 9 fills the hollow cylinder 7 and the injection gap 8, and wraps the outer surface of the connection node 3. Specifically, inside the hollow cylinder 7, the shaping colloid 9 fills the cavity formed by the alternating stacking of the first bent portion 41 and the second bent portion 42. In the injection gap 8, the shaping colloid 9 permeates and fills the space between the stacked first strip 1 and the second strip 2; simultaneously, the shaping colloid 9 overflows to the outer peripheral surface of the connection node 3, forming a colloid coating layer that wraps the exposed surface of the connection node 3. After molding, the ejector pin is withdrawn, and the connection node 3 is connected as one unit by the shaping colloid 9, forming an ejector pin cavity 43 at the ejector pin withdrawal position.

[0040] By creating the slit 4 and alternating the first bend 41 and the second bend 42 to form a hollow cylinder 7, and by filling the outer surface with the shaping adhesive 9 through the injection gap 8, the connecting node 3 achieves chemical bonding and shaping based on mechanical interlocking, thus forming a self-locking structure. The connecting node 3 is then wrapped with the shaping adhesive 9, resulting in a multi-layered structure of adhesive and strips arranged in layers along the cross-section of the connecting node 3. This forms a stable combination structure of strips and adhesive. The structure is bonded together as a whole. When the first strip 1 and the second strip 2 are stretched, the strips and the adhesive are pressed together. The adhesive inside the hollow cylinder 7 effectively prevents the strips from being pulled out from the node position. This not only enhances the overall stiffness and bearing capacity of the geocell, but also optimizes its interaction performance with the soil. This effectively improves the reliability and durability of engineering applications and solves the problems of easy separation, insufficient tensile strength, and loosening of nodes after long-term creep caused by relying solely on ultrasonic welding or pin connection for geocell nodes in the existing technology.

[0041] In one specific embodiment of this case, the strips located on the same radial side of the hollow cylinder 7 are all strips with an arc-shaped surface structure. The arc-shaped surface structure refers to the cross-sectional structure of the strip's bent portion along the radial direction of the node being an arc shape.

[0042] Specifically, in the first strip 1 and the second strip 2, the surfaces of the strips located on the same radial side of the hollow cylinder 7 are both set as arc-shaped surfaces. This allows the stacked first strip 1 and the second strip 2 to deform by their own tension and maintain strip tension during the glue injection process. This avoids uneven glue injection gaps caused by strip deformation, which would affect the stability of the joint and glue connection structure. When the shaping glue 9 fills the glue injection gap 8 and wraps the outer surface of the connecting joint 3, the arc-shaped surface increases the contact area between the strip and the shaping glue 9. At the same time, the curved transition of the arc-shaped surface reduces stress concentration.

[0043] During the forming process of connecting node 3, after the strip with the arc-shaped surface is bent, its arc-shaped surface naturally conforms to the outer circumference of the mold ejector pin, thus naturally forming a hollow cylinder 7 with higher roundness after the ejector pin retracts. The shaping colloid 9 is injected, and a surface-to-surface contact fit is formed between the arc-shaped surface and the colloid, which significantly improves the bonding strength compared to planar contact.

[0044] In the field of geocell node shaping technology, by setting the same radial side strip as an arc surface and filling it with shaping colloid 9, the contact area between the strip and the colloid is maximized and the stress distribution is made uniform. This solves the problems of insufficient colloid filling at the corners of the planar strip after bending, easy to produce voids and local stress concentration leading to node cracking in the prior art.

[0045] Preferably, the arcuate surface is part of a cylindrical surface, and the axis of the cylindrical surface is parallel to or coincides with the axis of the hollow cylinder 7. Further, the surface of the arcuate surface 10 may also be provided with anti-slip ridges extending along the node axis, the anti-slip ridges being embedded in the shaping colloid 9 to enhance mechanical interlocking. Even further, the radius of curvature of the arcuate surface can gradually change along the length of the strip to accommodate the stress differences at different locations in the node area.

[0046] Furthermore, the strips located on the same radial side of the hollow cylinder 7 are all strips with a rhomboid surface structure. A rhomboid surface structure refers to the cross-section of the strip along the radial direction of the node being a rhomboid structure.

[0047] Specifically, in the first strip 1 and the second strip 2, the cross-section of the strip located on the same radial side of the hollow cylinder 7 is set as a rhombus.

[0048] When the setting agent 9 fills the injection gap 8 and wraps the outer surface of the connecting node 3, the setting agent 9 flows into the rhomboid surface and forms a mechanical interlocking structure after curing. The sharp edges of the rhomboid surface form a cutting-type embedding of the setting agent 9, and the agent and the strip have different wrapping thicknesses in the radial direction, which significantly improves the shear resistance between the agent and the strip.

[0049] In one specific embodiment of this case, among the inner strip and the outer strip located on the same radial side of the hollow cylinder 7, the inner strip is a strip with a rhomboid surface structure, and the outer strip is a strip with an arc surface structure.

[0050] Specifically, on the same radial side of the hollow cylinder 7, the side closer to the axis of the hollow cylinder 7 is the inner strip, and the side farther from the axis of the hollow cylinder 7 is the outer strip. The cross-section of the inner strip is set as a rhombus, and the cross-section of the outer strip is set as an arc. The rhombus structure of the inner strip and the arc structure of the outer strip result in an uneven distribution of the width of the glue injection gap 8.

[0051] When the sizing colloid 9 is filled into the injection gap 8, the composite strip structure of the inner diamond surface and the outer arc surface on the same radial side, combined with the layered filling of the sizing colloid 9, achieves the synergy of high mechanical locking force inside the node and high external protection, solving the problem that the single-type noodle strip in the prior art cannot achieve a balance between bonding strength and appearance protection.

[0052] The inner strip can be arranged with two layers of diamond-shaped structures to form a double-layer mesh anchoring. Furthermore, the outer curved surface of the outer strip can be coated with a weather-resistant protective coating, flush with the outer surface of the shaped colloid 9. Even further, the stacking order of the inner and outer strips can be interchanged, i.e., the inner strip has an arc-shaped structure and the outer strip has a diamond-shaped structure, to accommodate different colloid penetration directions.

[0053] In one specific embodiment of this case, the first strip 1 and the second strip 2 have a connecting portion 12 connected to the outer peripheral surface of the hollow cylinder 7, and a transition gap 13 is located between the first strip 1 and the second strip 2 located between the connecting portions 12.

[0054] Specifically, the first strip 1 and the second strip 2 extend radially in the same direction at the same node and bend in opposite directions axially at the node, forming an alternating first bend 41 and a second bend 42. The first strip 1 and the second strip 2 can be arranged close together or spread out at a predetermined angle when they extend out of the connecting node. A connecting part 12 is provided at the part where the first strip 1 and the second strip 2 connect to the connecting node. After the first bend 41 and the second bend 42 are alternatingly stacked to form a hollow cylinder 7, the connecting part 12 constitutes a transition wall extending outward from the outer circumference of the hollow cylinder 7. A transition gap 13 is provided between the first strip 1 and the second strip 2 at the position of the connecting part 12. The transition gap 13 extends axially along the node and communicates with the glue injection gap 8.

[0055] During the adhesive injection process, the shaping adhesive 9 not only fills the hollow cylinder 7 and the adhesive injection gap 8, but also further penetrates into the transition gap 13. The transition gap 13 serves as an auxiliary adhesive injection channel, ensuring a more uniform distribution of the shaping adhesive 9 in the radial direction of the connecting node 3, preventing insufficient adhesive at the outer edge of the node due to the adhesive being concentrated only inside the hollow cylinder 7. Simultaneously, the shaping adhesive 9 filling the transition gap 13 forms an adhesive bridge between the connecting portions 12, enhancing the connection strength between the first strip 1 and the second strip 2 in the outer edge region of the node.

[0056] By setting a connecting part 12 on the outer peripheral surface of the hollow cylinder 7 and forming a transition gap 13 between the connecting parts 12, the secondary distribution and bridging reinforcement of the shaping colloid 9 in the radial direction of the node are realized, which solves the problem in the prior art that the colloid only fills the central area of ​​the node and the lack of colloid bonding between the outer strips leads to easy delamination and peeling of the node edge.

[0057] In this embodiment, the connecting portion 12 is the natural extension of the strip after bending. In other embodiments, the connecting portion 12 can also be a separately pressed transition piece, which is fixedly connected to the first bent portion 41 and the second bent portion 42 by snap-fit ​​or insertion to form a detachable node outer edge structure.

[0058] In a specific embodiment of this case, the connecting node 3 includes one, two or more hollow cylinders 7, and an injection gap 8 is arranged between the first strip 1 and the second strip 2 in each hollow cylinder 7.

[0059] In the field of geocell multi-point anchoring technology, by setting one, two or more hollow cylinders 7 in the connection node 3 and arranging glue injection gaps 8 in each hollow cylinder 7 for glue filling, multi-point glue anchoring and load distribution of the connection node 3 are realized, which solves the problems of glue anchor failure (i.e., overall failure) and lack of redundancy in the existing single hollow cylinder structure node under ultimate load.

[0060] Furthermore, the hollow cylinder 7 is also filled with a central column, which has a hollow structure. The wall of the central column is also provided with an injection hole that runs through its thickness direction. One or both sides of the central column along its length are also provided with an overlapping edge structure that overlaps the hollow cylinder 7.

[0061] Specifically, the central column is a cylindrical hollow tube fitting, and its outer diameter is adapted to the inner diameter of the hollow cylinder 7, so that the central column can be inserted into the hollow cylinder 7. Multiple glue injection holes are spaced apart on the wall surface of the central column along the circumferential and axial directions. The glue injection holes penetrate through the wall thickness direction of the central column, connecting the cavity of the central column with the inner cavity of the hollow cylinder 7.

[0062] During the adhesive injection process, the sizing adhesive 9 is first injected into the cavity of the central column, and then permeates outward through the injection hole, filling the gap between the wall of the central column and the inner wall of the hollow cylinder 7. It then merges with the sizing adhesive 9 in the injection gap 8, and finally together wraps the outer surface of the connecting node 3. The central column provides a rigid support frame for the connecting node 3, preventing the hollow cylinder 7 from undergoing elliptical deformation or collapse under pressure.

[0063] One or both sides of the central column along its length are also provided with an overlapping structure. The overlapping structure is an annular flange or a plate-like lug extending outward from the end face of the central column. The overlapping structure overlaps the end face of the hollow cylinder 7 or the surface of the strip, thereby restricting the displacement of the central column in the node axial direction and preventing the central column from slipping out of the hollow cylinder 7 under the action of glue injection pressure or external load.

[0064] In the field of geocell rigid shaping technology, by filling the hollow cylinder 7 with a central column having an injection hole and using the overlapping structure for limiting, the rigid support of the connecting node 3 and the internal and external colloids are connected and shaped. This solves the problems in the prior art where the hollow cylinder 7 is prone to deformation and collapse under pressure or long-term creep, and the central column is prone to displacement during the injection process, resulting in uneven distribution of colloids.

[0065] In this embodiment, the central column is a cylindrical hollow tube. In other embodiments, the central column can also be a square hollow tube or a star-shaped hollow tube, and the injection hole can also be an elongated slot extending along the axial direction of the central column to increase the colloid penetration area.

[0066] In a specific embodiment of this case, the first strip 1 and the second strip 2 are HDPE strips, PP strips or PET strips.

[0067] The connecting node 3 has a shaping colloid 9 that wraps the first strip 1 and the second strip 2 together. The shaping colloid 9 is an injection molding colloid, which is formed by injection molding of one or more materials selected from TPE, TPR, TPU, EVA, EMA, EEA, PVC, PP, PE, HDPE, SBS, ABS, PA6, PA12, TPEE, and EBA.

[0068] The shaping colloid 9 is an injection molding colloid. During the injection molding process, the shaping colloid 9 is in a molten fluid state. The melting temperature of the injection molding material should be lower than the melting temperature of the strip to ensure the basic shape of the first strip 1 and the second strip 2. Of course, the surfaces of the first strip 1 and the second strip 2 can undergo a surface micro-melting state due to the melting temperature of the colloid, thereby improving the bonding ability between the colloid and the strip.

[0069] Meanwhile, the strip possesses certain elastic properties and is made of high-strength materials such as polypropylene (PP) or polyethylene (PE). These materials exhibit good wear resistance, chemical stability, resistance to photo-oxidative aging, and acid and alkali resistance, making them suitable for various soil conditions, including deserts. The strip has an internal reinforcing core, which can be made of steel strip, steel wire, polypropylene tensile tape, polyethylene terephthalate tensile tape, or fiberglass. The purpose of the reinforcing core is to improve the overall tensile strength of the strip and enhance its welding and bonding performance.

[0070] Specifically, the first strip 1 and the second strip 2 are HDPE strips, PP strips, or PET strips. HDPE (high-density polyethylene) strips have good flexibility and chemical resistance, lower tensile strength, but better ductility, making them suitable for projects requiring both ductility and flexibility, such as roadbed reinforcement. PP (polypropylene) strips have higher tensile strength but are more brittle and have poorer ductility, making them suitable for projects requiring high strength, but their brittleness must be considered. PET (polyester) strips combine strength and ductility, offering good overall performance, making them suitable for projects with high overall performance requirements. By using the above-mentioned node-wrapped tape structure for strips of different materials, the overall structural performance of the geocell is improved.

[0071] The shaped colloid 9 is injection molded from one or more of the following materials: TPE, TPR, TPU, EVA, EMA, EEA, PVC, PP, PE, HDPE, SBS, ABS, PA6, PA12, TPEE, and EBA. The colloid can be injection molded using one or more of the following materials: TPE (thermoplastic elastomer), TPR (thermoplastic rubber), TPU (thermoplastic polyurethane), EVA (ethylene-vinyl acetate copolymer), EMA (ethylene-methacrylic acid copolymer), EEA (ethylene-ethyl acrylate copolymer), PVC (polyvinyl chloride), PP (polypropylene), PE (polyethylene), HDPE (high-density polyethylene), SBS (styrene-butadiene-styrene block copolymer), ABS (acrylonitrile-butadiene-styrene copolymer), PA6 (polyamide 6), PA12 (polyamide 12), and TPEE (thermoplastic polyester elastomer).

[0072] In one specific embodiment of this case, the first strip 1 and the second strip 2 are fitted together tightly in the thickness direction; or,

[0073] The first and second strips have an opening angle between them, determined by the location of the connection node, ranging from 0° to 160°. The geocells form a triangular or polygonal honeycomb structure. The first and second strips, after being encapsulated in the colloid, can be tightly fitted together or have a predetermined opening angle. The fitted strip structure increases the tensile strength of the strips and the connection node, while the reserved opening angle facilitates the construction and shaping of the honeycomb structure.

[0074] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A geocell with a self-locking structure, characterized in that, This includes the first and second strips that form the connecting nodes; The connecting node has multiple slits spaced apart along the node axis. The strips on both sides of the slits are bent along the thickness direction of the strips to form a first bent part and a second bent part. The first bent part and the second bent part are stacked alternately to form a hollow cylinder extending along the node axis. The first strip and the second strip located on the same radial side of the hollow cylinder are stacked, and there is an injection gap between the stacked first strip and the second strip; A shaping adhesive is provided at the connection node position. The shaping adhesive fills the gap between the hollow cylinder and the glue injection and wraps the outer surface of the connection node.

2. The geocell with a self-locking structure according to claim 1, characterized in that, The strips located on the same radial side of the hollow cylinder are all strips with an arc-shaped surface structure.

3. The geocell with a self-locking structure according to claim 1, characterized in that, The strips located on the same radial side of the hollow cylinder are all strips with a rhomboid surface structure.

4. The geocell with a self-locking structure according to claim 1, characterized in that, Among the inner and outer strips located on the same radial side of the hollow cylinder, the inner strip is a strip with a rhomboid surface structure, and the outer strip is a strip with an arc surface structure.

5. The geocell with a self-locking structure according to any one of claims 1-4, characterized in that, The first strip and the second strip have a connecting portion that connects to the outer peripheral surface of the hollow cylinder, and there is a transition gap between the first strip and the second strip located between the connecting portions.

6. The geocell with a self-locking structure according to claim 5, characterized in that, The connection node includes one, two or more hollow cylinders, and an injection gap is arranged between the first strip and the second strip in each hollow cylinder.

7. The geocell with a self-locking structure according to claim 6, characterized in that, The hollow cylinder is also filled with a central column, which has a hollow structure and an injection hole that extends through its thickness direction on the wall surface. One or both sides of the central column along its length are provided with an overlapping edge structure that overlaps the hollow cylinder.

8. The geocell with a self-locking structure according to claim 6, characterized in that, The first and second strips are HDPE strips, PP strips, or PET strips.

9. The geocell with a self-locking structure according to claim 6, characterized in that, The portions of the first and second strips extending beyond the connecting node are tightly fitted together in the thickness direction; or, The first strip and the second strip have an opening angle between them, which is set by the location of the connecting node, and the opening angle is between 0° and 160°.

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