Fixing structure and geocell

Abstract

The invention provides a fixing structure which comprises two connecting pieces which are connected in an inserted mode, a connecting piece body extends outwards to form a plurality of extrusion parts, a plurality of extrusion grooves are formed in the connecting piece body, and the extrusion parts and the extrusion grooves are arranged at intervals. The connecting piece comprises a first connecting piece and a second connecting piece; the extrusion part and the extrusion groove of the first connecting piece correspond to the extrusion groove and the extrusion part of the second connecting piece respectively; the end part of the joint of the extrusion part and the first connecting piece body protrudes out of the first connecting piece body to form a first stop part, and the end part of the joint of the extrusion part and the second connecting piece body protrudes out of the second connecting piece body to form a second stop part; when the first connecting piece and the second connecting piece are connected in an inserted mode, the first stopping part and the second stopping part are connected in a clamped mode. According to the fixing structure provided by the invention, extra tools and complex procedures are not needed in the assembling process, assembling can be completed only by connecting the first connecting piece and the second connecting piece in a matched mode, the assembling difficulty is remarkably reduced, and the construction time is shortened.

Description

A fixed structure and geocell Technical Field

[0001] This invention relates to the field of geocell technology, and more specifically to a fixed structure and a geocell using the fixed structure. Background Technology

[0002] Geocells are honeycomb-like three-dimensional grid structures formed by connecting polymer sheets through welding, riveting, tenoning, and other methods. They are widely used in engineering fields such as roadbed reinforcement, slope protection, and river channel management. Their core function is to improve soil stability and bearing capacity by laterally restraining the soil and distributing loads. Their fixing structure is a key component that ensures the geocells work collaboratively with the soil and prevents displacement or slippage.

[0003] The existing fixed structure has many components, requiring through holes to be made on the connectors, and pins to be inserted into the through holes to connect the two connectors. In actual operation, the two connectors are first connected by tenon joint using a device. After the two connectors are connected, the pins must be manually inserted into the through holes formed by the two connectors to complete the assembly, which is time-consuming and labor-intensive. Summary of the Invention

[0004] The purpose of this invention is to provide a fixed structure that is easy to operate and has a high connection strength, and a geocell using the fixed structure.

[0005] According to one aspect of the present invention, a fixing structure is provided, comprising two connectors that are interlocked with each other. The connector body extends outward to form a plurality of pressing portions, and the connector body is provided with a plurality of pressing grooves, the pressing portions and the pressing grooves being spaced apart. The connectors include a first connector and a second connector. The pressing portions and pressing grooves of the first connector correspond to the pressing grooves and pressing portions of the second connector, respectively. The end of the pressing portion where it connects with the first connector body protrudes beyond the first connector body to form a first stop portion, and the end of the pressing portion where it connects with the second connector body protrudes beyond the second connector body to form a second stop portion. When the first connector and the second connector are interlocked, the first stop portion and the second stop portion engage with each other.

[0006] In some embodiments, the first connector body includes a first frame and a plurality of parallel first fixing parts. The first frame includes two first end faces and two first side faces. The first fixing part is located between the two end faces. A first extrusion groove is provided between the first fixing part and the end faces. The first fixing part extends outward to form a first extrusion part.

[0007] In some embodiments, the ends of the two ends of the first extrusion portion protrude from the first fixing portion to form a first stop portion, and the first stop portion is stepped.

[0008] In some embodiments, the second connector body includes a second frame and a plurality of parallel second fixing portions. The second frame includes two second end faces and two second side faces. The second fixing portions are located between the two end faces. The second fixing portions extend outward to form a second pressing portion, and the second end faces extend outward to form a third pressing portion.

[0009] In some embodiments, the end faces of the two ends of the second extrusion part protrude from the second fixing part to form a second stop; the outer surface of the third extrusion part is flush with the second end face, and the inner end face of the third extrusion part protrudes from the second end face to form a second stop; the second stop is stepped.

[0010] In some embodiments, the extrusion part is semi-circular or U-shaped, and the extrusion groove is provided with a blocking strip. The shape of the blocking strip is the same as that of the extrusion part, and the blocking strip and the extrusion part clamp the extruded sheet.

[0011] In some embodiments, the thickness of the pressing portion gradually increases in the direction toward the stop portion to form an inclined surface.

[0012] In some embodiments, the width of the extrusion portion is smaller than the width of the connector body.

[0013] In some embodiments, the first connector and the second connector are interference fit.

[0014] According to another aspect of the present invention, a geocell is provided, comprising: a fixing structure; a sheet having a plurality of through slits along its length, the through slits dividing the sheet into extrusion strips that cooperate with the extrusion part; when the fixing structure fixes two mating sheets, the extrusion part extrudes the extrusion strips into the extrusion groove.

[0015] The beneficial effects are as follows: The fixing structure provided by this invention requires no additional tools or complex procedures during assembly. Simply connecting the first and second connecting parts together allows for rapid assembly, significantly reducing assembly difficulty and shortening construction time. The connection forms a stable structure with uniform stress distribution at the interface, eliminating stress concentration. Under long-term stress, vibration, soil deformation, and external loads, it is not prone to loosening, slippage, or separation, exhibiting extremely high overall connection strength and significantly improving connection strength and structural stability. This fixing structure not only meets the requirements for rapid installation and efficient construction of geocells on-site but also ensures long-term stability and resistance to failure under complex working conditions, thereby improving the overall service life of the geocells and the safety of the project.

[0017] The geocell of this invention uses through-slits on the sheets to form extrusion strips that cooperate with the extrusion parts. This allows the fixing structure to precisely squeeze the extrusion strips into the corresponding extrusion grooves when connecting two sheets, achieving an embedded locking fit between the sheets and the fixing structure. Through the mutual cooperation of multiple sets of extrusion parts and extrusion grooves clamping the sheets, a stable connection structure with uniform stress, multi-point constraint, and overall locking is formed between the two sheets. This significantly improves the connection strength at the geocell nodes and the overall structural stability, thus significantly enhancing the subgrade reinforcement effect and the service life of the project. Attached Figure Description

[0018] Figure 1 is a structural schematic diagram of a fixing structure according to an embodiment of the present invention; Figure 2 is a structural schematic diagram of a first connecting member of a fixing structure according to an embodiment of the present invention; Figure 3 is a front view schematic diagram of a first connecting member of a fixing structure according to an embodiment of the present invention; Figure 4 is a structural schematic diagram of a second connecting member of a fixing structure according to an embodiment of the present invention; Figure 5 is a front view schematic diagram of a second connecting member of a fixing structure according to an embodiment of the present invention; Figure 6 is a structural schematic diagram of the sheet material of a geocell according to an embodiment of the present invention. Detailed Implementation

[0019] The present invention will now be further described with reference to the accompanying drawings.

[0020] As shown in Figures 1-6, Figure 1 is a structural schematic diagram of a fixing structure according to an embodiment of the present invention; Figures 2-3 are schematic diagrams of the first connecting member of a fixing structure according to an embodiment of the present invention; Figures 4-5 are schematic diagrams of the second connecting member of a fixing structure according to an embodiment of the present invention; Figure 6 is a structural schematic diagram of the sheet material of a geocell according to an embodiment of the present invention.

[0021] As shown in Figures 1-5, a fixing structure includes two interlocking connectors, each with a connector body extending outward to form multiple pressing portions. The connector body contains multiple pressing grooves, with the pressing portions and grooves spaced apart. The connector includes a first connector 1 and a second connector 2. The pressing portions and pressing grooves of the first connector 1 correspond to the pressing grooves and pressing portions of the second connector 2, respectively. The end of the pressing portion where it connects to the body of the first connector 1 protrudes beyond the body of the first connector 1 to form a first stop portion 16. The end of the pressing portion where it connects to the body of the second connector 2 protrudes beyond the body of the second connector 2 to form a second stop portion 26. When the first connector 1 and the second connector 2 are interlocked, the first stop portion 16 and the second stop portion 26 engage with each other.

[0022] In one embodiment of the present invention, the first connector 1 includes a first frame 11, a plurality of first fixing portions 12 disposed within the first frame 11, and a first pressing portion 13 extending outward from the first fixing portions 12. The first frame 11 includes first end portions 111 located at both ends and first side portions 112 located on both sides. The width of the first end portions 111 is the same as the width of the first side portions 112. The first end portions 111 at both ends and the first side portions 112 on both sides are connected to form the first frame 11. The gap between the first pressing portion 13 and the first end portion 111 is a first pressing groove 14, and the gap between two adjacent first pressing portions 13 is a second pressing groove 15. The thickness of the first pressing portion 13 gradually increases in the direction toward the first frame 11 to form a smooth slope, such that the end of the first pressing portion 13 connected to the first fixing portion 12 protrudes from the first fixing portion 12 to form a first stop portion 16, the first stop portion 16 being stepped.

[0023] The second connector 2 includes a second frame 21, a plurality of second fixing portions 22 disposed within the second frame 21, and a second pressing portion 23 extending outward from the second fixing portions 22. The second frame 21 includes second end portions 211 located at both ends and second side portions 212 located on both sides. The width of the second end portions 211 is the same as the width of the second side portions 212. The second end portions 211 at both ends and the second side portions 212 on both sides are connected to form the second frame 21. The gaps in the second connector 2, namely the gaps between the second pressing portions 23 and the second end portions 211 and the gaps between two adjacent second pressing portions 23, constitute a third pressing groove 25. The thickness of the second pressing portion 23 gradually increases in the direction toward the second frame 21 to form a smooth slope. The end of the second pressing portion 23 connected to the second fixing portion 22 protrudes from the second fixing portion 22 to form a second stop portion 26, which is stepped.

[0024] The second end face 211 extends outward to form the third extrusion portion 24. The outer end face of the third extrusion portion 24 is flat, and the thickness of the inner end face of the third extrusion portion 24 gradually increases towards the frame to form a smooth slope. The end of the inner end face of the third extrusion portion 24 that connects to the second end face 211 protrudes out of the second end face 211 to form the second stop portion 26, which is stepped.

[0025] When the first connector 1 is connected to the second connector 2: the first pressing part 13 is pressed into the third pressing groove 25, the third pressing part 24 is pressed into the first pressing groove 14, and the second pressing part 23 is pressed into the second pressing groove 15, so that the first stop part 16 and the second stop part 26 are engaged. Furthermore, the inclined surfaces of the first pressing part 13, the second pressing part 23, and the third pressing part 24 facilitate the insertion and connection of the first connector 1 and the second connector 2.

[0026] In this embodiment, to ensure a more secure connection, the first connector 1 and the second connector 2 are connected by an interference fit. When the first connector 1 and the second connector 2 are inserted together, the total thickness of the end faces of the first fixing part 12, the second fixing part 22, and the second connector 2 is equal to the internal length of the first frame 11. Since the first connector 1 and the second connector 2 are injection molded from thermoplastic polymer material and have a certain degree of elasticity, the interference fit allows the first extrusion part 13 to be extruded into the third extrusion groove 25, while the third extrusion part 24 is extruded into the first extrusion groove 14, and the second extrusion part 23 is extruded into the second extrusion groove 15, thereby causing the first stop part 16 and the second stop part 26 to be snapped together.

[0027] In this embodiment, the first extrusion part 13, the second extrusion part 23, and the third extrusion part 24 are semi-circular or U-shaped. The straight edge of the first extrusion part 13 is connected to the first fixing part 12. The width of the first extrusion part 13 is smaller than the width of the body of the first connector 1; specifically, the width of the first extrusion part 13 is smaller than the width of the first fixing part 12, and the first extrusion part 13 is not connected to the first side surface 112. The straight edge of the second extrusion part 23 is connected to the second fixing part 22, and the width of the second extrusion part 23 is smaller than the width of the second fixing part 22; the second extrusion part 23 is not connected to the second side surface 212. The straight edge of the third extrusion part 24 is connected to the second end face 211, and the width of the third extrusion part 24 is smaller than the width of the second end face 211; the two sides of the second end face 211 protrude beyond the third extrusion part 24. For easy interlocking connection, multiple first fixing parts 12 are arranged in parallel, and the first fixing parts 12 are arranged parallel to the first end face 111 and perpendicular to the first side surface 112. Multiple second fixing parts 22 are arranged in parallel, and the second fixing parts 22 are arranged in parallel with the second end face 211 and perpendicular to the second side face 212.

[0028] In this embodiment, the extrusion groove is provided with a blocking strip. Specifically, the first extrusion groove 14 is provided with a first blocking strip 17, which extends from the first end face 111 along the first side face 112 and is connected to both first side face 112. The second extrusion groove 15 is provided with a second blocking strip 18, which is connected to both first side face 112. The third extrusion groove 25 is provided with a third blocking strip 27, which is connected to the second side face 212. There is a gap between the first blocking strip 17 and the first fixing part 12, a gap between the second blocking strip 18 and the first fixing part 12, a gap between the third blocking strip 27 and the second end face 211, and a gap between the third blocking strip 27 and the second fixing part 22.

[0029] The shape inside the first blocking bar 17 is the same as the shape of the extrusion part, the shape inside the second blocking bar 18 is the same as the shape of the second extrusion part 23, and the shape inside the third blocking bar 27 is the same as the shape of the third extrusion part 24, so that the blocking bars and the extrusion part together clamp the sheet 3 being extruded into the extrusion groove.

[0030] As shown in Figure 6, a geocell includes a sheet 3 and the fixing structure described in the above embodiment. The sheet 3 has several through-slits 32 along its length, dividing it into extrusion strips 31 that cooperate with the extrusion sections. To cooperate with the extrusion sections, the extrusion strips 31 are arranged in parallel. The number of extrusion strips 31 is the sum of the number of extrusion sections, and the width of each extrusion strip 31 is equal to the thickness of the extrusion section. Specifically, the number of extrusion strips 31 is the sum of the number of the first extrusion section 13, the second extrusion section 23, and the third extrusion section 24. A fixing structure is used to fix two sheets 3. When the first connector 1 and the second connector 2 are pressed together, the extrusion strips 31 of the two sheets 3 are respectively forced into the extrusion grooves to form a stable grid structure. Specifically, the first extrusion section 13 extrudes two sheets 3 and their corresponding extrusion strips 31 into the third extrusion groove 25; the third extrusion section 24 extrudes two sheets 3 and their corresponding extrusion strips 31 into the first extrusion groove 14; and the second extrusion section 23 extrudes two sheets 3 and their corresponding extrusion strips into the second extrusion groove 15. Multiple sheets 3 are connected in pairs through a fixing structure to form a stable grid structure. Various materials such as soil, sand, gravel, and concrete are then filled into the grid to strengthen the roadbed.

[0031] After performing tensile, shear, and peel tests on the sheet 3 fixed by the fixing structure of the present invention using an electronic tensile testing machine, the sheet exhibited high strength. The sheet used in this experiment was 5 cm wide and had six through slits, forming seven extrusion strips 31. The first connector 1 and the second connector 2 were connected by an insertion of the fixing structure. The first extrusion part 13 drove the extrusion strips 31 into the third extrusion groove 25, the third extrusion part 24 drove the extrusion strips 31 into the first extrusion groove 14, and the second extrusion part 23 was driven into the second extrusion groove 15. Specifically, the tensile test was performed by assembling and fixing the two sheets 3 together using the fixing structure to form a stable connection between them. Fold one end of one sheet 3 in half, and hold the two ends of the sheet 3 with the first clamp of the electronic tensile testing machine; fold the two ends of the other sheet 3 in half, and hold the two ends of the sheet 3 with the second clamp of the electronic tensile testing machine; perform a tensile test at a constant rate, and record the maximum tensile force greater than 10,000 Newtons when the fixed structure fails.

[0032] Shear test: Two sheets 3 are assembled and fixed using a fixed structure to form a stable connection. The first clamp of the electronic tensile testing machine holds one end of one sheet 3, and the second clamp of the tensile testing machine holds one end of the other sheet 3. The clamped ends are located on both sides of the fixed structure. A tensile shear test is performed at a constant rate, and the maximum shear force when the fixed structure fails is recorded as greater than 6000 Newtons.

[0033] Peeling test: Two sheets 3 are assembled and fixed using a fixing structure to form a stable connection between them. The first clamp of the electronic tensile testing machine holds one end of one sheet 3, and the second clamp of the tensile testing machine holds one end of the other sheet 3. The two clamped ends are located on the same side of the fixing structure. A tensile shear test is performed at a constant rate, and the maximum shear force when the fixing structure fails is recorded as greater than 4000 Newtons.

[0034] The above are merely some embodiments of the present invention, used only to illustrate the technical solutions of the present invention, and not to limit them. For those skilled in the art, modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions for some or all of the technical features, without departing from the inventive concept of the present invention, all fall within the protection scope of the present invention.

Claims

1. A fixed structure, characterized in that, The device includes two interlocking connectors. The connector body extends outward to form multiple pressing portions, and the connector body has multiple pressing grooves. The pressing portions and pressing grooves are spaced apart. The connector includes a first connector and a second connector. The pressing portions and pressing grooves of the first connector correspond to the pressing grooves and pressing portions of the second connector, respectively. The end of the pressing portion that connects to the first connector body protrudes from the first connector body to form a first stop portion, and the end of the pressing portion that connects to the second connector body protrudes from the second connector body to form a second stop portion. When the first connector and the second connector are interlocked, the first stop portion and the second stop portion engage with each other.

2. The fixing structure according to claim 1, characterized in that, The first connector body includes a first frame and a plurality of parallel first fixing parts. The first frame includes two first end faces and two first side faces. The first fixing part is located between the two end faces. A first extrusion groove is provided between the first fixing part and the end faces. The first fixing part extends outward to form a first extrusion part.

3. The fixing structure according to claim 2, characterized in that, The ends of the two faces of the first extrusion part protrude from the first fixing part to form a first stop part, and the first stop part is stepped.

4. The fixing structure according to claim 1, characterized in that, The second connector body includes a second frame and a plurality of parallel second fixing parts. The second frame includes two second end faces and two second side faces. The second fixing part is located between the two end faces. The second fixing part extends outward to form a second pressing part, and the second end faces extend outward to form a third pressing part.

5. The fixing structure according to claim 3, characterized in that, The end faces of the two ends of the second extrusion part protrude from the second fixing part to form a second stop; the outer surface of the third extrusion part is flush with the second end face, and the inner end face of the third extrusion part protrudes from the second end face to form a second stop; the second stop is stepped.

6. The fixing structure according to claim 1, characterized in that, The extrusion section is semi-circular and U-shaped, and the extrusion groove is provided with a blocking strip. The shape of the blocking strip is the same as that of the extrusion section, and the blocking strip and the extrusion section clamp the extruded sheet.

7. The fixing structure according to claim 1, characterized in that, The thickness of the extrusion section gradually increases toward the stop section to form an inclined surface.

8. The fixing structure according to claim 1, characterized in that, The width of the extrusion section is smaller than the width of the connector body.

9. The fixing structure according to claim 1, characterized in that, The first connector and the second connector are interference fit.

10. A geocell, characterized in that, include: The fixing structure as described in any one of claims 1-7; A sheet material has several through slits along its length, which divide the sheet material into extrusion strips that cooperate with the extrusion section; when the fixing structure fixes two fitted sheets, the extrusion section extrudes the extrusion strips into the extrusion groove.

Images