Self-locking geocell with embedded nodes
By using a node-interlocking self-locking design, geocell sheets are connected using the conical locking principle of the interlocking body and interlocking rod, which solves the problem of material strength damage caused by traditional connection methods and achieves low-cost, high-strength geocell connection.
Patent Information
- Application Number
- CN202520362672.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-04
AI Technical Summary
Traditional geocell node connection methods can easily damage the strength of polymer materials and require slotting or drilling on the sheets, resulting in high production costs and reduced strength.
The design adopts a node-interlocking self-locking design, which uses the conical locking principle of the interlocking body and the interlocking rod to connect the geocell sheet. No drilling or grooving is required. Self-locking is achieved through the cooperation of the inner conical hole and the outer conical rod, which improves the peel and shear strength of the node.
It simplifies the manufacturing process, reduces production costs, maintains sheet strength, achieves uniform and reasonable stress distribution, improves the peel and shear strength of nodes, and enhances the overall strength of geocells.
Smart Images

Figure CN223867208U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of geotechnical construction technology, specifically to a node-interlocking self-locking geocell. Background Technology
[0002] Geocells are sheet-like cell structures. They are flexible and can be folded up for transportation, saving transport space. When in use, they can be unfolded and filled with soil, rock, or concrete to form a structure with strong lateral confinement and high rigidity. Geocells are mainly used as a subbase to treat weak foundations and increase their bearing capacity. They can also be laid on slopes to form slope protection structures and can be used to construct retaining structures. However, traditional geocells currently have the following disadvantages:
[0003] Most current geocell connection methods cause some damage to the nodes or the sheet material at the nodes. For example, welding of geocells will cause a decrease in the strength of the polymer material at the node due to the melting temperature. For mortise and tenon joints, interlocking, and bolts, grooves or holes need to be cut in the sheet material, which will also lead to a decrease in the strength of the material at the node. Utility Model Content
[0004] In view of the above-mentioned problems in the existing technology, the node-interlocking self-locking geocell provided by this utility model is used to overcome the above-mentioned defects in the existing technology.
[0005] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:
[0006] The node-interlocking self-locking geocell comprises geocell sheets, interlocking elements, positioning pins, and interlocking rods.
[0007] The insert has two first through holes arranged side-by-side on its upper and lower end faces. The first through holes are internal conical holes. The left and right side walls of the insert are respectively provided with positioning grooves, and the two positioning grooves are connected to the two first through holes.
[0008] The interlocking rod includes two vertical rods arranged side by side and a horizontal rod connecting the upper ends of the two vertical rods. The two ends of the horizontal rod are respectively provided with a second through hole, and the vertical rod is an outer cone rod.
[0009] The upper end of the front surface of the inlay has two through holes arranged side by side, penetrating the first through hole and the front and rear side walls of the inlay. The third through hole and the second through hole on the same side are located on the same straight line.
[0010] After the two geocell sheets are folded in half, the folded ends are inserted into the two positioning grooves respectively. The two vertical rods are inserted into the two first through holes from top to bottom, and the two vertical rods are located on the inside of the bent parts of the two geocell sheets respectively. The two positioning pins are inserted into the two third through holes and the second through hole from front to back respectively.
[0011] In one embodiment, the diameter of the first through hole and the upper end of the vertical rod is larger than the diameter of its lower end.
[0012] In one embodiment, the upper end of the interlocking body is provided with a first countersunk hole, and the crossbar is located in the first countersunk hole.
[0013] In one embodiment, a connecting rod is provided between the front ends of the two positioning pins, and a second countersunk hole is provided at the upper end of the front surface of the interlocking body, with the connecting rod located inside the second countersunk hole.
[0014] In one embodiment, the top of the crossbar is flush with the upper end face of the interlocking body, and the front surface of the connecting rod is flush with the front surface of the interlocking body.
[0015] In one embodiment, the inlay has two fourth through holes arranged side by side inside, penetrating its upper and lower end faces, and the two fourth through holes are symmetrically arranged on the front and rear sides of the first countersunk hole.
[0016] Compared with the prior art, the node-interlocking self-locking geocell provided by this utility model,
[0017] Firstly, there is no need to drill or groove the sheet, which not only reduces production costs and simplifies the manufacturing process, but also does not damage the strength of the sheet. In this way, the stress value in each direction during actual use is equal to the stress value of the sheet strip itself.
[0018] Secondly, the interlocking body and the interlocking rod in this utility model adopt a design scheme based on the principle of conical locking, so the force between the two is more uniform and reasonable. When the interlocking rod is under force, it will press the sheet strip tightly against the inner surface of the interlocking body, thereby achieving the purpose of self-locking, thereby improving the peel strength and shear strength of its nodes, and ultimately achieving the purpose of being consistent with the strength of the sheet. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the cross-sectional structure of the present invention;
[0020] Figure 2 This is a schematic diagram of the main longitudinal section structure of the inlay in this utility model;
[0021] Figure 3This is a schematic diagram of the right-side structure of the inlay in this utility model;
[0022] Figure 4 for Figure 3 A top-view structural diagram;
[0023] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure at points AA and BB;
[0024] Figure 6 This is a schematic diagram of the main structure of the phase insert in this utility model;
[0025] Figure 7 This is a schematic diagram of the assembly structure of the positioning pin and connecting rod in this utility model. Detailed Implementation
[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0029] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0030] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0031] like Figure 1-7 As shown, for ease of description, the orientation references of "up", "down", "left", "right", "front" and "rear" in this utility model are attached. Figure 2 The directions shown are for reference only;
[0032] The node-interlocking self-locking geocell comprises geocell sheet 1, interlocking body 2, positioning pin 3, and interlocking rod 4.
[0033] The inlay 2 has two first through holes 5 arranged side by side on the left and right sides, penetrating its upper and lower end faces. The left and right side walls of the inlay 2 are respectively provided with positioning grooves 6, and the two positioning grooves 6 are connected to the two first through holes 5.
[0034] The interlocking rod 4 includes two vertical rods 41 arranged side by side and a horizontal rod 42 connected between the upper ends of the two vertical rods 41. The two ends of the horizontal rod 42 are respectively provided with second through holes 7.
[0035] The upper end of the front surface of the inlay 2 has two through holes 5 and third through holes 8 on the front and rear side walls of the inlay 2, which are arranged side by side. The third through holes 8 and the second through holes 7 on the same side are located on the same straight line.
[0036] Two geocell sheets 1 are folded in half and their folded ends are inserted into two positioning slots 6. Then, two vertical rods 41 are inserted into two first through holes 5 from top to bottom, with the two vertical rods 5 located on the inside of the folded parts of the two geocell sheets 1. Two positioning pins 3 are inserted into two third through holes 8 and two second through holes 7 from front to back. The first through hole 5 is an inner conical hole, and the vertical rod 41 is an outer conical rod. The diameter of the upper end of the first through hole 5 and the vertical rod 41 is larger than the diameter of the lower end.
[0037] As can be seen from the above structure, the connection between the two geocell sheets 1 is achieved through the cooperation of the interlocking body 2 and the interlocking rod 4. At the same time, the interlocking body 2 with an inner conical hole and the interlocking rod 4 with an outer conical shape are used to achieve self-locking between the two, which not only facilitates the assembly and disassembly of the two, but also greatly simplifies the entire geocell manufacturing process. Finally, the interlocking rod 4 is positioned by two positioning pins 3, realizing the installation and interlocking between the geocell sheet 1, the interlocking body 2, the positioning pins 3 and the interlocking rod 4. This also avoids the need to drill holes in the geocell sheet 1, further ensuring the strength of the geocell sheet 1, and thus improving the overall strength of the geocell.
[0038] In this embodiment, the upper end of the inlay 2 is provided with a first countersunk hole 9, and the crossbar 42 is located inside the first countersunk hole 9;
[0039] A connecting rod 10 is provided between the front ends of the two positioning pins 3, and a second countersunk hole 11 is provided at the upper end of the front surface of the interlocking body 2, with the connecting rod 10 located inside the second countersunk hole 11.
[0040] The top of the crossbar 42 is flush with the upper end face of the interlocking body 2, and the front surface of the connecting rod 10 is flush with the front surface of the interlocking body 2. This makes the whole structure consisting of the interlocking body 2, the positioning pin 3, the interlocking rod 4 and the connecting rod 10 more compact and more rounded and beautiful.
[0041] In this embodiment, two fourth through holes 12 are arranged side by side inside the interlocking body 2, penetrating its upper and lower end faces, and the two fourth through holes 12 are symmetrically arranged on the front and rear sides of the first countersunk hole 10. By setting two more fourth through holes 12 inside the interlocking body 2, the overall weight of the interlocking body 2 is further reduced, thereby facilitating the installation and transportation of geocells.
[0042] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0043] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A node-interlocking self-locking geocell, characterized in that, Includes geocell sheets, inlays, positioning pins, and inlay rods. The insert has two first through holes arranged side-by-side on its upper and lower end faces. The first through holes are internal conical holes. The left and right side walls of the insert are respectively provided with positioning grooves, and the two positioning grooves are connected to the two first through holes. The interlocking rod includes two vertical rods arranged side by side and a horizontal rod connecting the upper ends of the two vertical rods. The two ends of the horizontal rod are respectively provided with a second through hole, and the vertical rod is an outer cone rod. The upper end of the front surface of the inlay has two through holes arranged side by side, penetrating the first through hole and the front and rear side walls of the inlay. The third through hole and the second through hole on the same side are located on the same straight line. After the two geocell sheets are folded in half, the folded ends are inserted into the two positioning grooves respectively. The two vertical rods are inserted into the two first through holes from top to bottom, and the two vertical rods are located on the inside of the bent parts of the two geocell sheets respectively. The two positioning pins are inserted into the two third through holes and the second through hole from front to back respectively.
2. The node-embedded self-locking geocell according to claim 1, characterized in that, The diameter of the first through hole and the upper end of the vertical rod is larger than the diameter of its lower end.
3. The node-embedded self-locking geocell according to claim 1, characterized in that, The upper end of the inlay is provided with a first countersunk hole, and the crossbar is located in the first countersunk hole.
4. The node-embedded self-locking geocell according to claim 3, characterized in that, A connecting rod is provided between the front ends of the two positioning pins, and a second countersunk hole is provided at the upper end of the front surface of the interlocking body, with the connecting rod located inside the second countersunk hole.
5. The node-embedded self-locking geocell according to claim 4, characterized in that, The top of the crossbar is flush with the upper end face of the interlocking body, and the front surface of the connecting rod is flush with the front surface of the interlocking body.
6. The node-embedded self-locking geocell according to claim 3, characterized in that, The inlay has two fourth through holes arranged side by side inside, penetrating its upper and lower end faces, and the two fourth through holes are symmetrically arranged on the front and back sides of the first countersunk hole.