Multi-anchored soil cell

Abstract

The utility model provides a kind of geocell of multiple anchorage points, solid center column provides uniform radial support to hollow cylinder, limit its stress deformation and collapse, keep the geometric stability of connecting node, simultaneously provide even bonding base for colloid.Glue injection hole is arranged along axial direction and forms multiple anchorage points, mechanical occlusion is generated after colloid solidification, significantly enhance the ability of pullout resistance;Multiple-point dispersion stress avoids stress concentration, even if local anchorage point fails, load is redistributed to remaining anchorage points, realize progressive failure rather than sudden failure, provide redundant security.Gel distribution is uniform and controllable, improve the durability and fatigue resistance of node.Belt, hollow cylinder, center column and colloid form continuous anchoring structure, realize multi-path load transfer and dispersion, with high bearing capacity, long-term reliability and manufacturing convenience, effectively solve the technical problems of insufficient connection strength of traditional node, single anchoring, uneven glue injection and easy cracking.

Description

Technical Field

[0001] This utility model relates to the field of geotechnical materials technology, and more specifically, to a geocell with multiple anchoring points. Background Technology

[0002] Geocells are geosynthetic materials with a three-dimensional network structure formed by polymer strips connected in a specific way. When unfolded, they form a honeycomb or grid-like spatial structure. When filled with soil and rock, they can significantly improve the bearing capacity of the foundation, enhance slope stability, and reduce uneven settlement. Geocells are widely used in slope protection, soft soil foundation reinforcement, retaining wall construction, roadbed reinforcement, and river management in highway, railway, water conservancy, municipal, and mining engineering projects.

[0003] Traditional geocell connection nodes typically employ simple riveting, welding, or plugging methods, which result in insufficient connection strength. When subjected to tensile, shear, or peeling forces, stress concentrates on a few anchor points, easily leading to premature failure of the anchor points and overall destruction of the node.

[0004] Uneven adhesive application, due to the complex internal structure of the nodes, can easily obstruct the flow of the adhesive, leading to incomplete filling or uneven distribution of the adhesive in some areas, creating weak points. During long-term use, factors such as temperature changes, load cycles, and adhesive aging can easily cause failure modes such as strip slippage, node detachment, and adhesive aging and cracking, leading to the overall failure of the cell structure and posing a safety hazard to the project.

[0005] With the rapid development of transportation infrastructure construction, the performance requirements of geocells in projects such as highways, high-speed railways, and airport runways are becoming increasingly stringent. Especially in applications such as soft soil foundation treatment, high embankment construction, and steep slope protection, the connection quality at geocell nodes directly determines the mechanical properties and durability of the entire geocell structure.

[0006] Therefore, there is an urgent need for a geocell connection node structure with multiple anchoring points, high connection strength, high reliability, and convenient construction. Utility Model Content

[0007] In view of this, the present invention provides a geocell with multiple anchoring points to improve the joint strength of the geocell.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A geocell with multiple anchor points has multiple sets of first strips and second strips with connecting nodes;

[0010] The connection node is cut with multiple slits spaced apart along the height direction, and the strips on both sides of the slits extend in opposite directions, so that the connection node forms a hollow cylinder.

[0011] The hollow cylinder is filled with a central column of a solid structure that supports and shapes it, and the central column is provided with a radially recessed glue injection hole;

[0012] The hollow cylinder is filled with a colloid that wraps around the central column, and the colloid extends outside the hollow cylinder and wraps around the first strip and the second strip;

[0013] The first strip, the second strip, and the central column are fixed together by the colloid to form the connection node.

[0014] The slit releases bending stress, and the strips bend in the opposite direction to form a hollow cylinder, simplifying the structure and providing space for the central column. The solid central column provides uniform radial support to the hollow cylinder, limiting its stress deformation and collapse, maintaining the geometric stability of the joint, and providing a flat bonding substrate for the colloid. The hollow cylinder is filled with colloid that wraps around the central column, and the colloid extends outside the hollow cylinder and wraps around the first and second strips; the first and second strips are fixed to the central column by the colloid to form the connection node. The injection holes are arranged at intervals along the axial direction to form multiple anchoring points. After the colloid cures, it produces mechanical interlocking, significantly enhancing the pull-out resistance; the multi-point stress distribution avoids stress concentration, and even if a local anchoring point fails, the load is redistributed to the remaining anchoring points, achieving gradual failure rather than sudden failure, providing redundant safety assurance. The uniform and controllable distribution of the colloid improves the durability and fatigue resistance of the joint. The strip, hollow cylinder, central column and colloid form a continuous anchoring structure, realizing multi-path load transfer and distribution, and has high load-bearing capacity, long-term reliability and manufacturing convenience. It effectively solves the technical problems of insufficient connection strength, single anchoring, uneven glue injection and easy cracking of traditional nodes.

[0015] Preferably, in the geocell with multiple anchor points, the axial end of the central column is provided with an overlapping structure for locking and positioning the connecting node. The overlapping structure can be provided at either end of the central column alone, or at both ends of the central column axially.

[0016] The overlapping structure is an overlapping boss extending radially along the central column, and the overlapping boss overlaps the strip of the connecting node.

[0017] Preferably, in the above-mentioned geocell with multiple anchor points, the overlapping structure is an annular overlapping boss, or the overlapping structure is a semi-circular annular overlapping boss.

[0018] Preferably, in the above-mentioned geocell with multiple anchor points, the injection holes are distributed at intervals along the height direction of the central column, arranged in a row; or arranged in multiple rows at intervals along the circumference of the central column.

[0019] Preferably, in the above-mentioned geocell with multiple anchoring points, the injection hole is a radial injection through hole that penetrates the central column.

[0020] Preferably, in the above-mentioned geocell with multiple anchor points, the connecting node has an adhesive-filled opening surrounded by strips on both sides of the cut, and the adhesive injection hole is arranged correspondingly to the adhesive-filled opening.

[0021] Preferably, in the above-mentioned geocell with multiple anchor points, the connection node includes one, two or more hollow cylinders;

[0022] Each hollow cylinder is provided with a central column. When the connection node has two or more hollow cylinders, either end of the central column is connected in parallel through an overlapping plate.

[0023] Preferably, in the above-mentioned geocell with multiple anchor points, the central column is a cylindrical, square, or hexagonal central column.

[0024] Preferably, in the above-mentioned geocell with multiple anchor points, the first strip and the second strip are HDPE strips, PP strips or PET strips.

[0025] Preferably, in the above-mentioned geocell with multiple anchor points, the connecting node has an injection-molded colloid that wraps the first strip, the second strip and the central column as a whole. The injection-molded colloid 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. Attached Figure Description

[0026] 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.

[0027] Figure 1 A first assembly structure diagram of the geocell with multiple anchor points provided in this application;

[0028] Figure 2 A second assembly structure diagram of a geocell with multiple anchor points provided in this application;

[0029] Figure 3 A diagram of the first type of central column structure in a geocell with multiple anchor points provided in this application;

[0030] Figure 4 A diagram of the second type of central column structure in a geocell with multiple anchor points provided in this application;

[0031] Figure 5 A schematic diagram of a cross-shaped structure with a central column;

[0032] Figure 6 A schematic diagram of the segmented structure of the central column;

[0033] Figure 7 A schematic diagram of a cross-shaped structure with a central column;

[0034] Figure 8 A schematic diagram of the segmented structure of the central column;

[0035] Figure 9 The structural diagram of the geocell with multiple anchor points provided in this application.

[0036] The annotations in the attached figures are explained as follows:

[0037] Wherein, 1 is the first strip; 2 is the second strip; 3 is the connecting node; 4 is the cut; 5 is the hollow cylinder; 6 is the central column; 7 is the injection hole; 8 is the glue-through window; 9 is the overlapping structure; 14 is the overlapping plate; 13 is the injection hole; and 15 is the injection colloid. Detailed Implementation

[0038] This utility model discloses a geocell with multiple anchor points, which improves the joint strength of the geocell.

[0039] 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.

[0040] like Figure 1 and Figure 2 As shown, Figure 1 A first structural diagram of the geocell with multiple anchor points provided in this application; Figure 2 for Figure 1 Schematic diagram of the strip structure of the geocell.

[0041] This application provides a geocell with multiple anchor points, having multiple sets of first strips 1 and second strips 2 with connecting nodes;

[0042] Multiple slits 4 are cut at the connection node 3, spaced apart along the height direction. The strips on both sides of the slits 4 extend in opposite directions, so that the connection node position forms a hollow cylinder 5.

[0043] The hollow cylinder 5 is filled with a solid central column 6 that supports and shapes it. The central column 6 has radially recessed glue injection holes 7. The hollow cylinder 5 is filled with a glue (not shown) that wraps around the central column, and the glue extends outside the hollow cylinder 5 and wraps around the first strip 1 and the second strip 2. The first strip 1, the second strip 2 and the central column 6 are fixed together by the glue to form a connection node 3.

[0044] The slit 4 releases bending stress, and the strips bend in the opposite direction to form a hollow cylinder 5, simplifying the structure and providing space for the central column 6. The solid central column 6 provides uniform radial support to the hollow cylinder 5, limiting its stress deformation and collapse, maintaining the geometric stability of the joint, and providing a flat bonding substrate for the colloid. The hollow cylinder 5 is filled with colloid that wraps around the central column 6, and the colloid extends outside the hollow cylinder 5 and wraps around the first strip 1 and the second strip 2; the first strip 1, the second strip 2, and the central column 6 are fixed together by the colloid to form a connection node 3. The injection holes 7 are arranged axially at intervals to form multiple anchoring points. After the colloid cures, it produces mechanical interlocking, significantly enhancing the pull-out resistance; the multi-point stress distribution avoids stress concentration, and even if a local anchoring point fails, the load is redistributed to the remaining anchoring points, achieving gradual failure rather than sudden failure, providing redundant safety assurance. The uniform and controllable distribution of the colloid improves the durability and fatigue resistance of the joint. The strip, hollow cylinder 5, central column 6, and colloid form a continuous anchoring structure, enabling multi-path load transfer and dispersion. This structure combines high load-bearing capacity, long-term reliability, and ease of manufacturing, effectively solving the technical problems of insufficient connection strength, single anchoring method, uneven grouting, and easy cracking inherent in traditional joints.

[0045] The geocell consists of multiple sets of first strip 1 and second strip 2.

[0046] The first strip 1 and the second strip 2 are strip structures made of polymer materials, possessing sufficient tensile strength, elongation, and weather resistance. In this embodiment, the first strip 1 and the second strip 2 are made of high-density polyethylene (HDPE) strips.

[0047] The first strip 1 and the second strip 2 of each group form a connection node 3 at their intersection. There are numerous connection nodes 3 in the cell structure, and the connection quality of each connection node 3 affects the overall performance of the cell. Therefore, the design of the connection nodes 3 must take into account connection strength, construction convenience, and economy.

[0048] At the connection node 3, multiple slits 4 are cut along the height direction of the strip (i.e., perpendicular to the plane of the strip). The slits 4 penetrate the thickness direction of the strip and extend along the width direction of the strip. The slits 4 are spaced apart in the height direction, and the spacing between adjacent slits 4 is determined according to the design height of the hollow cylinder 5 and the mechanical properties of the strip material.

[0049] The cut 4 has rounded corners at the edge of the strip, which reduces stress concentration at the end of the cut 4 and prevents the strip from tearing from the end of the cut 4 when bent or under stress. In addition, the end of the cut 4 can also be locally reinforced, such as by increasing the thickness of the strip in the end area or adding reinforcing ribs, to further improve the tear resistance of the connection node 3.

[0050] The strips on both sides of the slit 4 extend out in opposite directions. Specifically, on one side of the slit 4, the first strip 1 and the second strip 2 are pressed together and bent towards a first side in the direction of strip thickness; on the other side of the slit 4, the first strip 1 and the second strip 2 are pressed together and bent towards a second side in the direction of strip thickness. Through this reverse bending, a hollow cylindrical structure, i.e., a hollow cylinder 5, is formed in the width direction at the connection node 3.

[0051] In this embodiment, as Figure 2 As shown, the cross-section of the hollow cylinder 5 is approximately triangular (rhomboid in shape when viewed axially). This triangular cross-section hollow cylinder 5 is formed by bending two layers of strips, providing good structural stability and resistance to deformation. Of the three sides of the triangular cross-section, two sides are formed by bending strips, and one side is the open side (i.e., the side where the glued window 8 is located). The triangular cross-section of the hollow cylinder 5 facilitates the insertion and positioning of the central column 6, and the triangular structure has good mechanical stability, making it less prone to torsional deformation.

[0052] In other embodiments, the cross-section of the hollow cylinder 5 can also be circular, elliptical, square, rectangular, or hexagonal. A circular cross-section hollow cylinder 5 is the easiest to process, and the contact stress distribution between the central column 6 and the cylinder wall is uniform. A square or rectangular cross-section hollow cylinder 5 has a planar contact surface with the central column 6, providing good resistance to rotation. A hexagonal cross-section hollow cylinder 5 combines the advantages of both circular and square shapes, being easy to process and possessing good resistance to rotation. The cross-sectional shape of the hollow cylinder 5 depends on the arrangement of the slits 4 and the bending angle of the strips; the specific shape is determined comprehensively based on engineering requirements and processing feasibility.

[0053] The hollow cylinder 5 is filled with a central column 6, which is a solid structure used to support and shape the hollow cylinder 5. The outer contour shape of the central column 6 matches the inner cavity shape of the hollow cylinder 5 to ensure that the central column 6 can be tightly inserted into the hollow cylinder 5 and provide uniform support force to the cylinder wall of the hollow cylinder 5.

[0054] In this embodiment, the central column 6 is made of high-density polyethylene (HDPE), the same material as the strip, and has good compatibility and adhesive properties. Alternatively, in another preferred embodiment, the central column 6 is made of rigid metal to provide stable support for the connection node 3. Furthermore, the diameter of the central column 6 is slightly smaller than the inner diameter of the hollow cylinder 5, leaving a gap between them to provide space for subsequent adhesive injection.

[0055] The axial length of the central column 6 is matched with the height of the hollow cylinder 5 to ensure that the central column 6 can completely fill the internal space of the hollow cylinder 5.

[0056] The outer surface of the center post 6 is roughened to improve adhesion to the injection-molded colloid 15. The roughening increases the mechanical interlocking between the colloid and the surface of the center post 6, improving the reliability of the bond. In other embodiments, the outer surface of the center post 6 may also be knurled, sandblasted, or coated with a primer to improve the adhesion of the colloid.

[0057] The central pillar 6 is provided with a radially recessed injection hole 7. The injection hole 7 is recessed radially inward from the outer surface of the central pillar 6. In this embodiment, the injection hole 7 is a blind hole, that is, a hole-like structure with one end open and the other end closed. The open end of the blind hole is located on the outer surface of the central pillar 6, and the closed end is located inside the central pillar 6. The depth of the blind hole needs to take into account both the amount of colloid stored and the structural strength of the central pillar 6.

[0058] In one specific embodiment of this case, the injection holes are spaced apart along the height direction of the central column, arranged in a row; or arranged in multiple rows spaced apart along the circumference of the central column.

[0059] Furthermore, the glue injection hole 7 is a radial glue injection through hole that penetrates the central column 6.

[0060] The injection holes 7 are spaced apart along the height of the central column 6 and arranged in a row.

[0061] The position of the injection hole 7 in the height direction can correspond to the position of the slit 4 on the hollow cylinder 5, or it can correspond to the middle position between the slits 4. When it corresponds to the position of the slit 4, the adhesive can flow directly to the gap between the strips at the slit 4, enhancing the bonding strength at the slit 4; when it corresponds to the middle position of the slit 4, the adhesive can fill the gap at the bend of the strip, enhancing the structural stability of the bend area. In this embodiment, the position of the injection hole 7 corresponds to the middle position between the slits 4.

[0062] The connecting node 3 has a glue-filled opening 8 formed by strips on both sides of the cut, and the glue injection hole 7 is arranged correspondingly to the glue-filled opening 8.

[0063] The arrangement direction of the glue injection holes 7 corresponds to the position of the glue-sealed window 8. The glue-sealed window 8 is a key structure on the connecting node 3. When the two strips (the first strip 1 and the second strip 2) are bonded together, the cut 4 penetrates the thickness direction of the two strips. When the strips on both sides of the cut 4 bend and extend in the opposite direction to form a hollow cylinder 5, in the thickness direction of the strips, one side of the strip (the bonded first strip 1 and the second strip 2) extends outward from the cell along the bending part, forming the cylinder wall of the hollow cylinder 5 after bending. The originally bonded area forms a partially missing area after bending, which is the glue-sealed window 8.

[0064] In this embodiment, the glue-covered window 8 connects to the side of the hollow cylinder 5 facing the interior of the compartment, and is an opening area naturally formed after the strip is bent. The presence of the glue-covered window 8 allows the glue to fill the interior of the hollow cylinder 5, while simultaneously connecting to the external space of the compartment, achieving full penetration and coating of the glue at node 3.

[0065] During adhesive injection, the adhesive is injected from the inside or outside of the central column 6, flows into the injection hole 7, and further passes through the adhesive opening 8, flowing into the external space of the compartment. After curing, it connects the strip, the central column 6, and the hollow cylinder 5 into a whole. After the adhesive cures in the injection hole 7, it forms an adhesive plug. Shear stress is generated between the adhesive plug and the wall of the injection hole 7, and the force is transferred to the central column 6 through the adhesive force and mechanical interlocking force of the adhesive. Since the injection holes 7 are arranged at intervals along the height direction of the central column 6, multiple axially distributed anchoring points are formed. Each anchoring point can independently bear a part of the load, realizing the multi-point distributed transfer of load and avoiding stress concentration in single-point anchoring.

[0066] Through the above structure, this embodiment achieves coordinated anchoring at multiple anchor points. Multiple injection holes 7 on the central column 6 form multiple independent anchor points after curing, and these anchor points are evenly distributed along the axial direction of the central column 6, distributing and transferring the load. Simultaneously, the solid central column 6 provides uniform radial support to the hollow cylinder 5, limiting the deformation of the hollow cylinder 5 under stress and ensuring the geometric stability at node 3. The adhesive at the through-window 8 connects the wall of the hollow cylinder 5 to the external space of the compartment, forming a continuous anchoring chain from the central column 6 to the external space, achieving effective force transmission and dispersion.

[0067] Figure 1 As shown, based on Embodiment 1, this embodiment further provides an overlapping structure 9 at the axial end of the central column 6 to clamp and position the connecting node 3, preventing the central column 6 from axially sliding or coming out of the hollow cylinder 5.

[0068] The overlapping structure 9 is an overlapping boss that extends radially along the central column 6 and overlaps the strip of the connecting node 3. When the central column 6 is inserted into the hollow cylinder 5, the overlapping boss is located on the outer (or inner) side of the strip, that is, on one side in the width direction of the strip. By contacting and clamping with the surface of the strip, it restricts the axial movement of the central column 6.

[0069] In this embodiment, the overlapping structure 9 is simultaneously located at both axial ends of the central column 6. The central column 6 is inserted from one end of the hollow cylinder 5 until the overlapping boss at one end contacts the strip; then it continues to be pushed until the overlapping boss at the other end contacts the strip at the other end of the hollow cylinder 5, forming a two-end limit. This two-end overlapping method provides the most reliable axial positioning, and the axial position of the central column 6 within the hollow cylinder 5 is precisely fixed, preventing axial slippage even under repeated loading or vibration environments.

[0070] The design of the overlapping structure 9 at both ends is particularly suitable for engineering applications in high-vibration environments (such as railway subgrades and airport runways) or under high-load conditions. In these scenarios, the cell is subjected to repeated vehicle loads over a long period of time, resulting in continuous vibration and slight displacement at node 3. If the central column 6 lacks reliable axial positioning, it may gradually slip axially under vibration, eventually leading to detachment and failure of node 3. The overlapping bosses at both ends mechanically clamp the central column 6 to its designed position within the hollow cylinder 5. Even if the adhesive strength decreases due to aging or other reasons, the overlapping bosses can still maintain the position of the central column 6 through mechanical action, preventing sudden failure of node 3.

[0071] In other embodiments, the overlapping structure 9 may be provided only at either end of the central column 6. For example, when the central column 6 is inserted from the upper end of the hollow cylinder 5, the overlapping structure 9 is provided only at the upper end of the central column 6, with the overlapping boss overlapping the strip surface at the upper end of the hollow cylinder 5, restricting the downward movement of the central column 6; the lower end of the central column 6 is fixed by adhesive bonding or other means. Single-end overlapping is suitable for nodes subjected to unidirectional forces, or scenarios where the central column 6 is fixed to the other end by adhesive bonding after insertion. The advantage of single-end overlapping is its simple structure and convenient insertion operation.

[0072] Figure 3 As shown, Figure 3 This is a schematic diagram of the first possible structure of the central column. In one implementation of this embodiment, the overlapping structure 9 is an annular overlapping boss. The annular overlapping boss is arranged around the entire circumference of the central column 6, providing 360° limiting and clamping functions. The contact between the annular overlapping boss and the strip surface is a continuous annular contact, with a large contact area and the most reliable limiting effect. Regardless of the axial force on the central column 6, the annular overlapping boss can provide effective support and clamping.

[0073] In another implementation of this embodiment, the overlapping structure 9 is a semi-circular overlapping boss. The semi-circular overlapping boss is arranged only in a portion of the circumference (approximately 180°). The advantage of the semi-circular overlapping boss is that it can significantly reduce material usage and processing costs, while facilitating the injection and discharge of colloid in areas where the overlapping boss is not arranged.

[0074] In this embodiment, the semi-circular overlapping protrusion is arranged opposite the side of the central column 6 facing the glue-covered window 8, i.e., the side facing away from the glue-covered window 8. This arrangement ensures that the overlapping protrusion does not obstruct the glue-covered window 8, facilitating the flow and penetration of the adhesive from the glue-covered window 8. Simultaneously, the semi-circular overlapping protrusion provides a clamping force on the side facing away from the glue-covered window 8, complementing the adhesive anchoring on the glue-covered window 8 side and achieving mechanical balance.

[0075] In other embodiments, the overlapping bosses can also be fan-shaped (such as 90° fan-shaped, 120° fan-shaped), multi-segment arc-shaped, or other discontinuous shapes. For example, three 120° fan-shaped overlapping bosses are evenly distributed circumferentially, providing reliable positioning while preserving the colloidal channels in three directions.

[0076] Figure 3 As shown, the glue injection holes 7 are spaced apart along the height of the central column 6, arranged in a row. This arrangement is suitable for situations where the hollow cylinder 5 has a glue-passing window 8 on only one side, or where the glue mainly needs to penetrate in one direction.

[0077] The glue injection holes 7 are arranged in multiple rows at intervals along the circumference of the central column 6. This allows for multiple anchoring points to be provided simultaneously in both the axial and radial directions, further enhancing the connection strength.

[0078] In other embodiments, the injection holes 7 may also be arranged in a spiral shape along the axial direction of the central post 6. This spiral arrangement creates a spiral distribution path of the adhesive on the outer surface of the central post 6, increasing the contact area and mechanical engagement length between the adhesive and the surface of the central post 6, thus improving the reliability of the bonding. The helix angle of the spiral arrangement is typically between 10° and 45°, preferably between 20° and 30°.

[0079] Furthermore, in this embodiment, the injection hole 7 is further defined as an injection through hole 13 that penetrates the radial direction of the central column 6, so as to further improve the uniformity of the adhesive distribution and the reliability of the anchoring.

[0080] like Figure 3 As shown, the glue injection hole 13 is a hole-like structure that penetrates the central column 6 radially, allowing the glue to flow from one side of the outer surface of the central column 6 through the glue injection hole 13 to the other side of the outer surface.

[0081] The injection holes 13 enable communication between the two sides of the central column 6. When the adhesive is injected into the injection holes 13 from one side, it flows through the holes to the other side, allowing for adhesive flow and distribution between different areas within the hollow cylinder 5. The hollow cylinder 5 has multiple adhesive openings 8, and the injection holes 13 can guide the adhesive to different opening positions, achieving multi-directional adhesive penetration. This connectivity significantly improves the uniformity of adhesive distribution within the node 3, preventing localized adhesive accumulation or loss.

[0082] After curing, the adhesive within the injection hole 13 forms a column penetrating the central post 6. This column structure provides continuous anchoring force in the radial direction of the central post 6, offering stronger pull-out resistance compared to adhesive plugs in blind holes. When node 3 is subjected to a pull-out force along the radial direction of the central post 6, the adhesive column within the injection hole 13 effectively transmits the force to the interior of the central post 6, preventing relative slippage between the central post 6 and the adhesive. The penetrating structure of the adhesive column allows the anchoring force to act simultaneously on both sides of the central post 6, creating a symmetrical mechanical response and improving the node's anti-peeling performance.

[0083] Meanwhile, the injection hole 13 facilitates gas venting during injection molding. When the adhesive is injected into the injection hole 13 from one side, the air inside the hole can be expelled from the other side. The through-hole structure of the injection hole 13 ensures that the adhesive is fully filled into the hole, improving the reliability of the anchoring.

[0084] The injection hole 13 enables bidirectional injection. When injection is made from one side of the central pillar 6, the adhesive flows through the injection hole 13 to the other side; simultaneously, additional injection can be made from the other side, achieving bidirectional symmetrical adhesive filling. Bidirectional injection can shorten injection time, improve production efficiency, and ensure sufficient adhesive filling within node 3.

[0085] In this embodiment, the glue injection holes 13 are arranged at intervals along the height direction of the central column 6, and the axis of the glue injection holes 13 corresponds to the position of the glue-through window 8 to ensure that the glue can flow smoothly to the glue-through window 8.

[0086] This embodiment further defines the corresponding arrangement of the glue injection through hole 13 and the glue passage window 8 to achieve directional flow and precise distribution of the glue.

[0087] Connection node 3 includes a hollow tube 5. A central column 6 is arranged inside the hollow tube 5. The single hollow tube structure is suitable for engineering applications under general load conditions, such as low-fill embankments and gentle slope protection. The advantages of the single hollow tube structure are its simple structure, low material consumption, low cost, and convenient processing and construction.

[0088] like Figure 1 and Figure 3As shown, the connecting node 3 includes two hollow cylinders 5. The two hollow cylinders 5 are arranged side by side along the length of the strip, and the central columns 6 inside the two hollow cylinders 5 are connected in parallel at one end of the axial direction by a lap plate.

[0089] The injection holes 7 (or injection through holes 13) on the two central columns 6 provide anchoring, and the walls of the two hollow cylinders 5 provide bonding area. The overall load-bearing capacity of the connection node 3 is improved compared with the single hollow cylinder structure. Under high load conditions, the double hollow cylinder structure can provide a more reliable connection and meet the safety requirements of the project.

[0090] If one of the hollow cores 5 or the central column 6 suffers localized damage due to manufacturing defects, material aging, or external force, the other hollow core 5 and the central column 6 can still continue to bear the load, and the connection node 3 will not immediately fail completely. This redundant design buys time for engineering maintenance and repair, reduces the risk of sudden failure, and improves the overall safety of the cell structure.

[0091] Meanwhile, the two hollow cylinders 5 are arranged side by side, so that the load at node 3 can be shared by the two hollow cylinders 5, reducing the stress on each hollow cylinder 5 and weakening the stress concentration phenomenon. At the same time, the strip area between the two hollow cylinders 5 also participates in load transfer, forming a wider stress distribution area.

[0092] In other embodiments, the connecting node 3 may also include three, four or more hollow cylinders 5. The multiple hollow cylinders 5 may be arranged side by side along the length of the strip, and the central column 6 in each hollow cylinder 5 may be connected in parallel to form a whole through overlapping plates or frame structures.

[0093] For example, three hollow cylinders 5 are arranged side by side along the length of the strip, and three central columns 6 are connected in parallel by long strip lap plates. This three-cylinder structure is suitable for high-load, long-span engineering applications, such as highway subgrades and railway subgrades. Multiple hollow cylinders 5 provide more anchoring points and a larger bonding area, further improving the load-bearing capacity of node 3 compared to a single hollow cylinder structure.

[0094] like Figure 4 As shown, Figure 4 This is a schematic diagram of the second structural design of the central pillar. The central pillar 6 has a cylindrical cross-section. The cylindrical central pillar 6 is the easiest to manufacture, and can be produced using processes such as turning, grinding, or injection molding. The contact between the cylindrical central pillar 6 and the hollow cylinder 5 is either line contact or surface contact (depending on the internal shape of the hollow cylinder 5), resulting in a more uniform stress distribution and avoiding localized stress concentration. The cylindrical central pillar 6 experiences less resistance when inserted into the hollow cylinder 5, which improves assembly efficiency, especially in large-scale production scenarios where its assembly speed advantage is significant.

[0095] like Figures 5-9 As shown, Figure 5 A schematic diagram of a cross-shaped structure with a central column; Figure 6 A schematic diagram of the segmented structure of the central column; Figure 7 A schematic diagram of a cross-shaped structure with a central column; Figure 8 A schematic diagram of the segmented structure of the central column; Figure 9 The structural diagram of the geocell with multiple anchor points provided in this application.

[0096] The central column 6 can be set with a cross-shaped cross section. It can be formed by opening axial grooves on the outer periphery of the central column with a rhomboid or circular cross section to form a cross-shaped structure. Of course, more strip grooves can also be started to form a cross-shaped structure like a gear.

[0097] Furthermore, multiple annular grooves can be spaced out on the rhomboid central pillar or the cylindrical central pillar.

[0098] In other embodiments, the central column 6 has a square cross-section. The contact surface between the square central column 6 and the hollow cylinder 5 is planar, which provides better resistance to rotation and enhances the torsional resistance of node 3. The four planes of the square central column 6 form surface contact with the cylinder wall of the hollow cylinder 5, resulting in a large contact area, uniform stress distribution, and the right-angled edges between the planes provide a mechanical interlocking effect, restricting the rotation of the central column 6.

[0099] The square central column 6 is suitable for engineering applications requiring high resistance to rotation, such as steep slope protection and high embankment construction. In these scenarios, the cells may be subjected to significant torque, and the square central column 6 can provide reliable torsional restraint, maintaining the geometric stability of the nodes.

[0100] In other embodiments, the central pillar 6 has a hexagonal cross-section. The hexagonal central pillar 6 combines the advantages of both cylindrical and square shapes, providing both good machinability and excellent resistance to rotation. The six planes of the hexagonal central pillar 6 alternately contact the wall of the hollow cylinder 5, with the contact state falling between line contact and surface contact, ensuring a certain contact area while avoiding excessive insertion resistance.

[0101] The hexagonal center post 6 is suitable for most engineering applications, especially those requiring a balance between ease of fabrication, assembly efficiency, and resistance to rotation. The hexagonal cross-section of the center post 6 offers a well-balanced mechanical performance, making it a cost-effective choice.

[0102] In other embodiments, the cross-section of the central column 6 can also be elliptical, rectangular, triangular, or other polygonal. An elliptical cross-section central column 6 has different stiffnesses in two orthogonal directions, suitable for anisotropic load conditions; a rectangular cross-section central column 6 is similar to a square one, but its aspect ratio can be adjusted to accommodate stiffness requirements in different directions; a triangular cross-section central column 6 matches the triangular cross-section hollow cylinder 5, resulting in a compact structure and high material utilization. The specific shape is determined comprehensively based on the internal cavity shape of the hollow cylinder 5, mechanical performance requirements, and processing feasibility.

[0103] In this embodiment, the first strip 1 and the second strip 2 are HDPE strips. HDPE (high-density polyethylene) is a thermoplastic with high crystallinity, a density of 0.94 g / cm³ to 0.97 g / cm³, and high rigidity and strength. Among geosynthetic materials, it is considered a material with moderate density and high strength. HDPE has a melting point of 130°C to 137°C, a softening temperature of approximately 120°C, and good dimensional stability at room temperature.

[0104] HDPE has a tensile strength of 20MPa to 35MPa and a yield strength of 20MPa to 30MPa, enabling it to withstand large tensile loads. HDPE also has an elongation at break of 500% to 1000%, exhibiting good toughness and the ability to undergo significant deformation without brittle fracture under stress. This is crucial for the adaptability of the cell after it is filled with soil and rock.

[0105] HDPE exhibits excellent chemical resistance, resisting the erosion of most acids, alkalis, and salts, including dilute sulfuric acid, dilute hydrochloric acid, and sodium hydroxide solution. This makes HDPE strips suitable for engineering scenarios with complex acid and alkaline environments, such as chemical plant areas, mine tailings ponds, and landfills.

[0106] HDPE exhibits good abrasion resistance, showing minimal surface wear even under prolonged frictional contact with soil and rock. It can be manufactured using processes such as extrusion molding, injection molding, and blow molding. Extrusion molding is the most commonly used process for producing HDPE strips, offering high production efficiency, uniform strip dimensions, and suitability for large-scale continuous production.

[0107] HDPE strips are suitable for most geocell engineering applications, especially in acidic and alkaline environments, long-term outdoor exposure, and under general load conditions. HDPE strips offer high cost-effectiveness and are one of the most commonly used strip materials for geocells.

[0108] In other embodiments, the first strip 1 and the second strip 2 are PP strips. PP (polypropylene) is a highly crystalline thermoplastic with the following characteristics:

[0109] PP exhibits good chemical resistance, resisting most acids, alkalis, and salts, but its oxidation resistance is poor, and it may degrade under the influence of strong oxidizing agents. PP has better solvent resistance than HDPE, exhibiting less swelling in organic solvents. PP has good processing properties and can be produced through processes such as extrusion molding and injection molding. The extrusion temperature of PP is higher than that of HDPE, typically between 200°C and 240°C. PP has good flowability, making it suitable for preparing thin-walled, complex-shaped strips.

[0110] In other embodiments, the first strip 1 and the second strip 2 are PET strips. PET (polyethylene terephthalate) is a semi-crystalline thermoplastic polyester with a density of 1.3 g / cm³ to 1.4 g / cm³, higher than HDPE and PP, but with significantly higher tensile strength and modulus than polyolefin materials. PET has a tensile strength of 50 MPa to 80 MPa and an elastic modulus of 2.0 GPa to 3.0 GPa, which is 2 to 3 times that of HDPE. This gives PET strips a higher load-bearing capacity for the same cross-sectional dimensions, making them suitable for engineering applications under high load conditions.

[0111] PET has an elongation at break of 50% to 300%, lower than HDPE and PP, but it exhibits excellent creep resistance, minimal deformation under long-term loads, and good dimensional stability. This is crucial for high-fill embankments and scenarios subject to long-term static loads.

[0112] PET strips are suitable for engineering applications with high load requirements, strict creep resistance requirements, and high temperature resistance requirements, such as highway subgrades, railway subgrades, and airport runways. While PET strips are relatively expensive, their performance advantages under high load conditions are significant, making them a high-performance strip material choice.

[0113] In other embodiments, the strip material can also be other polymer materials such as PVC, PA, and ABS, or strips of modified, blended, or composite materials of the above materials. For example, HDPE / PP blend strips combine the advantages of both materials; glass fiber reinforced HDPE strips improve rigidity and strength by adding glass fibers; nano-modified PP strips improve mechanical properties and weather resistance by adding nanofillers. The specific material selection is based on a comprehensive consideration of engineering environmental conditions, mechanical performance requirements, and economic factors.

[0114] After the adhesive is applied, the connecting node 3 has an injection-molded body 15 that encapsulates the first strip 1, the second strip 2, and the central post 6 as a whole. The injection-molded body 15 fills the injection hole 7 (or injection through hole 13), the adhesive opening 8, the gap between the central post 6 and the wall of the hollow cylinder 5, and the contact area between the overlapping boss and the strip. After curing, the injection-molded body 15 firmly connects the components into a whole, forming a three-in-one anchoring system of strip-central post-body.

[0115] In this embodiment, the injection-molded colloid 15 is formed by injection molding of thermoplastic polyurethane (TPU). TPU is a block copolymer composed of hard segments (diisocyanate and chain extender) and soft segments (long-chain polyols), capable of withstanding significant mechanical stress and friction. TPU has an elongation at break of 300% to 700%, exhibiting good toughness and elastic recovery.

[0116] In other embodiments, the injection-molded colloid 15 may also be injection-molded from one or more of the following materials:

[0117] Thermoplastic rubber (TPR): TPR is a general term for materials such as SBS (styrene-butadiene-styrene block copolymer) or SEBS (styrene-ethylene-butene-styrene block copolymer). TPR has rubber-like elasticity and plastic-like processing properties, with a relatively low price, making it suitable for cost-sensitive applications. TPR has a Shore A hardness of 70 to 95, a tensile strength of 15 MPa to 30 MPa, and an elongation at break of 300% to 800%. TPR has good weather resistance and aging resistance, making it suitable for engineering applications requiring long-term outdoor exposure. TPR has good compatibility with polyolefin materials (HDPE, PP) and high bond strength. TPR has a processing temperature of 160°C to 200°C and a relatively fast curing speed.

[0118] Ethylene-vinyl acetate copolymer (EVA): EVA is a copolymer of ethylene and vinyl acetate, and the VA content can be adjusted between 5% and 40%. EVA has good flexibility, adhesion, and transparency. The higher the VA content, the better the flexibility and the stronger the adhesion of the material. In this embodiment, EVA with a VA content of 20% to 28% is selected, with a Shore A80 to Shore A95 hardness, a tensile strength of 15MPa to 25MPa, and an elongation at break of 400% to 800%. EVA has a low processing temperature (120°C to 160°C), is easy to injection mold, and is suitable for temperature-sensitive strip materials. EVA has excellent compatibility with HDPE and PP and high adhesive strength. EVA has moderate weather resistance, and antioxidants and UV absorbers need to be added for long-term outdoor use.

[0119] Ethylene-methyl acrylate copolymer (EMA): EMA is a copolymer of ethylene and methyl acrylate, with the methyl acrylate content typically between 15% and 30%. EMA exhibits good flexibility, adhesion, and heat-sealing properties, and demonstrates excellent compatibility with a variety of polymers. EMA has a tensile strength of 10 MPa to 20 MPa and an elongation at break of 300% to 600%. EMA has a low processing temperature (140°C to 180°C), good thermal stability, and is suitable for co-extrusion and lamination processes. EMA exhibits particularly excellent adhesion to polar materials (such as PET and PA), making it suitable for bonding PET strips or PA center pillars.

[0120] Ethylene-ethyl acrylate copolymer (EEA): EEA is a copolymer of ethylene and ethyl acrylate, with the ethyl acrylate content typically between 15% and 30%. Similar to EMA, EEA exhibits good flexibility and adhesion, and its excellent resistance to environmental stress cracking makes it suitable for applications requiring long-term stress. EEA has a tensile strength of 10 MPa to 18 MPa and an elongation at break of 350% to 700%. The processing temperature for EEA is 150°C to 190°C, and it has good compatibility with most polymers.

[0121] Polyvinyl chloride (PVC): PVC is a widely used thermoplastic with excellent flame retardancy, chemical resistance, and electrical insulation. The hardness of PVC can be adjusted by adding plasticizers, ranging from rigid PVC (Shore D70 to Shore D85) to flexible PVC (Shore A50 to Shore A90). In this embodiment, flexible PVC with a hardness of Shore A80 to Shore A95, a tensile strength of 15 MPa to 25 MPa, and an elongation at break of 200% to 400% is selected. PVC has good adhesion to various strip and center post materials. PVC has excellent flame retardancy (oxygen index greater than 45%), making it suitable for engineering applications with high fire protection requirements. The disadvantages of PVC are its poor thermal stability, requiring the addition of heat stabilizers during processing; its tendency to become brittle at low temperatures; and the production of toxic gases during combustion.

[0122] Polypropylene (PP): When used as an injection molding compound, PP exhibits the best compatibility for bonding PP strips. PP colloid has a tensile strength of 20MPa to 35MPa and an elastic modulus of 1.0GPa to 1.5GPa, demonstrating high rigidity. PP has good temperature resistance, with a long-term service temperature up to 100°C. PP also has good chemical resistance, making it suitable for acidic and alkaline environments. PP has a processing temperature of 200°C to 240°C and a relatively fast curing speed. PP colloid is suitable for engineering applications in high-temperature environments and for self-adhesive bonding of PP strips.

[0123] Polyethylene (PE): PE includes LDPE (low-density polyethylene), LLDPE (linear low-density polyethylene), and HDPE (high-density polyethylene), etc. When PE is used as an injection molding compound 15, it exhibits excellent compatibility with HDPE strips and HDPE center pillars 6, resulting in the highest bond strength. The tensile strength of the PE compound ranges from 10 MPa to 30 MPa, and its elongation at break ranges from 200% to 800%. PE has good chemical resistance and electrical insulation properties. The processing temperature of PE ranges from 160°C to 220°C, and it cures quickly. PE compound is suitable for cost-sensitive applications with lower strength requirements, as well as for self-bonding applications involving HDPE strips.

[0124] Styrene-butadiene-styrene block copolymer (SBS): SBS is a thermoplastic elastomer with excellent elasticity, abrasion resistance, and anti-slip properties. SBS has a Shore A hardness of 60 to 95, a tensile strength of 15 MPa to 30 MPa, and an elongation at break of 500% to 1000%. SBS has good compatibility with asphalt, plastics, and other materials, and is often used to modify asphalt and toughen plastics. SBS has moderate weather resistance and is prone to aging under long-term UV exposure, requiring the addition of antioxidants and UV stabilizers. The processing temperature of SBS is 160°C to 200°C, and it cures relatively quickly. SBS is suitable for applications requiring high elasticity and toughness.

[0125] Acrylonitrile-butadiene-styrene copolymer (ABS): ABS possesses good comprehensive mechanical properties, with tensile strength ranging from 30 MPa to 50 MPa, impact strength from 20 kJ / m² to 40 kJ / m², and hardness from Shore D70 to Shore D85. ABS exhibits excellent processing performance and a good surface gloss, making it suitable for products with high aesthetic requirements. However, ABS has moderate chemical corrosion resistance and is not resistant to strong acids and strong oxidizing agents. Its weather resistance is poor, and prolonged outdoor use can easily lead to discoloration and embrittlement. The processing temperature for ABS is 200°C to 240°C. While ABS is suitable for products with high requirements for appearance and mechanical properties, its insufficient weather resistance limits its application in outdoor engineering projects.

[0126] Polyamide 6 (PA6): PA6 is a commonly used engineering plastic with high mechanical strength, wear resistance, and self-lubricating properties. PA6 has a tensile strength of 60MPa to 80MPa, an elastic modulus of 2.5GPa to 3.5GPa, and excellent wear resistance (wear loss less than 20mm³). PA6 also has excellent oil resistance, making it suitable for oily environments. PA6 has relatively high water absorption (approximately 3%), and its dimensional and performance changes significantly after water absorption; the impact of water absorption needs to be considered when using it in humid environments. PA6 has a processing temperature of 240°C to 280°C and a relatively fast curing speed. PA6 is suitable for engineering applications in high-load, high-wear-resistance, and oil-resistant environments.

[0127] Polyamide 12 (PA12): Compared to PA6, PA12 has a lower water absorption rate (approximately 1.5%) and better dimensional stability, while maintaining good mechanical properties and chemical resistance. PA12 has a tensile strength of 50 MPa to 70 MPa and an elastic modulus of 1.5 GPa to 2.0 GPa. PA12 exhibits excellent low-temperature performance and can be used below -40°C. PA12 has better chemical resistance than PA6 and can resist a wider range of chemical media. The processing temperature of PA12 is 240°C to 270°C. PA12 is more expensive and is suitable for high-end applications with high performance requirements, such as cold regions, high-humidity environments, and chemically corrosive environments.

[0128] Thermoplastic Polyester Elastomer (TPEE): TPEE is a high-performance thermoplastic elastomer with excellent mechanical strength, fatigue resistance, and chemical resistance. TPEE has a tensile strength of 30 MPa to 50 MPa, an elastic modulus of 100 MPa to 500 MPa, and an elongation at break of 300% to 600%. TPEE exhibits excellent temperature resistance, with long-term service temperatures reaching 120°C to 150°C and short-term service temperatures reaching 180°C. TPEE has good hydrolysis resistance, making it suitable for humid or underwater environments. TPEE has better chemical resistance than TPU, resisting more oils and solvents. The processing temperature of TPEE is 200°C to 240°C. TPEE is suitable for engineering applications requiring high-temperature environments, high-load conditions, and high chemical resistance.

[0129] Ethylene-butyl acrylate copolymer (EBA): EBA is a copolymer of ethylene and butyl acrylate, with the butyl acrylate content typically between 15% and 30%. EBA exhibits better flexibility and low-temperature performance than EMA and EEA, with a glass transition temperature as low as -60°C. EBA has a tensile strength of 8 MPa to 15 MPa and an elongation at break of 400% to 800%. EBA possesses excellent bonding properties, making it particularly suitable for bonding with polar materials. The processing temperature of EBA is 140°C to 180°C. EBA is suitable for applications requiring low-temperature environments, high elasticity, and good adhesion.

[0130] In practical applications, the above materials can be used alone or in combination of two or more. For example, TPU can be used as the main colloid material (70% to 90%), with a certain proportion of TPEE (10% to 30%) added to improve mechanical strength and temperature resistance; or EVA can be used as the main material (60% to 80%), with SBS (20% to 40%) added to improve elasticity and toughness. In addition, various additives can be added to improve the properties of the colloid, such as tackifiers (to improve adhesion), toughening agents (to improve impact resistance), fillers (to reduce cost and improve rigidity), antioxidants (to improve aging resistance), and UV absorbers (to improve weather resistance). The amount of additives added is usually 0.5% to 5% of the total colloid, with the specific amount determined according to the type and performance requirements of the additive.

[0131] The geocell with multiple anchor points provided in this application forms multiple axially distributed anchor points after curing through multiple injection holes 7 (or injection through holes 13) on the central column 6. This disperses and transfers the load, avoiding stress concentration during single-point anchoring and significantly improving the connection strength and fatigue life of node 3. Each anchor point independently bears a portion of the load, and if one anchor point fails due to local defects, the other anchor points can still continue to bear the load, providing a certain degree of redundancy.

[0132] The solid central column 6 provides uniform radial support to the hollow cylinder 5, limiting the deformation of the hollow cylinder 5 under stress and ensuring the geometric stability at node 3 and the overall load-bearing capacity of the cell. The solid structure of the central column 6 also increases the local mass and stiffness of node 3, improving its vibration and impact resistance.

[0133] The corresponding arrangement of the injection holes and glue-passing windows ensures the directional flow and uniform distribution of the adhesive at node 3, guaranteeing full bonding between components and preventing partial bonding gaps or adhesive buildup. This corresponding arrangement also improves the controllability and detectability of the injection process, making it easier for operators to assess the quality of the adhesive application.

[0134] 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 multiple anchor points, characterized in that, It has multiple sets of first and second strips with connecting nodes; The connection node is cut with multiple slits spaced apart along the height direction, and the strips on both sides of the slits extend in opposite directions, so that the connection node forms a hollow cylinder. The hollow cylinder is filled with a central column of a solid structure that supports and shapes it, and the central column is provided with a radially recessed glue injection hole; The hollow cylinder is filled with a colloid that wraps around the central column, and the colloid extends outside the hollow cylinder and wraps around the first strip and the second strip; The first strip, the second strip, and the central column are fixed together by the colloid to form the connection node.

2. The geocell with multiple anchor points according to claim 1, characterized in that, The axial end of the central column is provided with an overlapping structure for locking and positioning the connecting node. The overlapping structure can be provided alone at either end of the central column, or simultaneously at both ends of the central column in the axial direction. The overlapping structure is an overlapping boss extending radially along the central column, and the overlapping boss overlaps the strip of the connecting node.

3. The geocell with multiple anchor points according to claim 2, characterized in that, The overlapping structure is an annular overlapping boss, or the overlapping structure is a semi-circular annular overlapping boss.

4. The geocell with multiple anchor points according to any one of claims 1-3, characterized in that, The injection holes are spaced apart along the height of the central column, arranged in a row; or arranged in multiple rows along the circumference of the central column.

5. The geocell with multiple anchor points according to claim 4, characterized in that, The injection hole is a radial injection through hole that penetrates the central column.

6. The geocell with multiple anchor points according to claim 5, characterized in that, The connecting node has a glue-filled opening formed by strips on both sides of the cut, and the glue injection hole is arranged corresponding to the glue-filled opening.

7. The geocell with multiple anchor points according to claim 5, characterized in that, The connection node includes one, two, or more hollow cylinders; Each hollow cylinder is provided with a central column. When the connection node has two or more hollow cylinders, either end of the central column is connected in parallel through an overlapping plate.

8. The geocell with multiple anchor points according to claim 7, characterized in that, The central pillar can be cylindrical, square, or hexagonal.

9. The geocell with multiple anchor points according to claim 8, characterized in that, The first and second strips are HDPE strips, PP strips, or PET strips.

10. The geocell with multiple anchor points according to claim 9, characterized in that, The connecting node has an injection-molded body that encapsulates the first strip, the second strip, and the central column as a single unit.

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