High-strength geocell with fixing piles

Abstract

The utility model discloses a high-strength geocell with fixed piles, which relates to the technical field of road engineering and comprises a plurality of sheets, the sheets are fixedly connected with adjacent sheets to form nodes, the nodes are detachably connected with the fixed piles through bolts, drill bits are arranged at two ends of each fixed pile, and the drill bits are connected with the fixed piles through bolts. The fixed pile is provided with a plurality of limiting pieces and a plurality of elastic pieces, the equal-strength temperature of the elastic pieces and the fixed pile is higher than the working temperature of the sheet, and the equal-strength temperature of the fixed pile is higher than the equal-strength temperature of the elastic pieces. According to the scheme, through the design of the elastic piece, the elastic piece is heated during installation, plastic deformation of the elastic piece is promoted, the elastic piece only deforms when the tension of the geocell is damaged, the situation that in an existing scheme, the elastic piece is continuously in a stretching state after installation is effectively avoided, and therefore the fatigue time of the elastic piece is greatly shortened; the service life of the geocell is influenced.

Description

Technical Field

[0001] This utility model relates to the field of road engineering technology, and in particular to a high-strength geocell with fixed piles. Background Technology

[0002] Geocells, a three-dimensional mesh-like honeycomb structure made of polymer sheets welded by ultrasonic welding, have become a key material in geotechnical engineering for reinforcing weak foundations, slope protection, river management, and reinforcing load-bearing layers since their emergence in the 1980s. Their core mechanism lies in significantly improving the integrity and shear strength of the fill material through three-dimensional constraint, creating a "lateral confinement effect" that disperses the superstructure load and reduces uneven settlement. However, the polymers constituting the cells (such as high-density polyethylene (HDPE) or polypropylene (PP)) inevitably undergo creep under long-term continuous loads, meaning the material undergoes slow plastic deformation over time. This creep leads to a decrease in the cell structure height and relaxation of lateral constraints, causing the reinforcement effect to decay over time and potentially leading to progressive failure of the entire reinforcement system. This poses a potential safety hazard in critical projects such as steep slopes or heavily loaded roadbeds.

[0003] Existing technologies for delaying creep-induced geocell failure mainly focus on two aspects: First, starting with the geocell material, this involves three dimensions: material modification, structural optimization, and load management. Improving the crystallinity of the polymer matrix and the intermolecular forces significantly enhances the material's creep resistance and long-term elastic modulus. Second, starting with the geocell structure, this involves modifying the sheet structure and increasing material thickness or adding geometric reinforcement units in areas of anticipated high stress to distribute internal stress more effectively and delay creep deformation.

[0004] In the improvement of geocell structures, commonly used solutions include: one is to optimize the shape of the anchor rods, such as full-length corrugated or ribbed anchor rods. However, as the anchor rod structure becomes more complex, the installation difficulty of this solution also increases. Another solution is to add a tension compensation structure to the geocell, such as installing elastic components like disc springs on the geocell. The elastic force of these components allows the geocell to be in a taut and advantageous state at the beginning of installation. However, in this solution, the elastic components are constantly subjected to external loads from the initial installation stage until the geocell may fail due to creep. If the durability and other parameters of the elastic components are not properly selected in the early stage, the elastic components are very likely to fail when the geocell is in normal service, making it difficult to delay the development of geocell creep. Utility Model Content

[0005] The purpose of this invention is to provide a high-strength geocell with fixed piles to solve the above-mentioned problems.

[0006] This utility model is achieved through the following technical solution:

[0007] A high-strength geocell with fixed piles includes several sheets, each sheet being fixedly connected to adjacent sheets to form nodes. Fixed piles are detachably connected to each node via pins. Drill bits are provided at both ends of each fixed pile. Each fixed pile has several limiting members and several elastic members, and each elastic member is detachably connected to adjacent limiting members. The strength-retention temperature of both the elastic members and the fixed piles is higher than the working temperature of the sheets, and the strength-retention temperature of the fixed piles is higher than that of the elastic members. In this design, the elastic members are heated during installation to induce plastic deformation. This ensures that after the geocell is installed, the elastic members are in a free state, deforming only when the geocell's tension is compromised. This effectively avoids the situation in existing designs where the elastic members remain under tension after installation, significantly shortening the fatigue time of the elastic members and reducing the lifespan of the geocell.

[0008] Furthermore, the fixing pile includes a tenon and a mortise, the tenon and the mortise being detachably connected, and both the tenon and the mortise are interference-fitted with the pin. This solution uses the tenon and mortise to achieve initial fixing of the sheet material. The tenon and mortise mutually restrict each other's longitudinal movement, while the pin restricts the lateral movement of the tenon, mortise, and sheet material, thereby achieving restriction of the sheet material at various angles. Compared to the traditional method using anchor rods, this solution requires adjustment of multiple components during installation to limit the sheet material's position. This significantly improves the error tolerance of the fixing pile installation. During installation, operators can adjust the installation positions of the remaining components in real time according to the installation progress, thus greatly reducing the installation difficulty of the geocell.

[0009] Furthermore, the limiting component includes hooks, and both the tenon and the mortise have limiting cavities for restricting the shape of the elastic element, with each hook fixedly connected to the sidewall of an adjacent limiting cavity. Compared to existing technologies, this solution using hooks to limit the elastic element has a simpler structure and less impact on the structural stability of the fixing pile itself.

[0010] Furthermore, the pin includes an outer tube that is interference-fitted with the fixing pile. An inner rod is provided inside the outer tube, and the diameter of the inner rod is the same as the inner diameter of the outer tube. This design, through the design of the inner rod and outer tube, significantly reduces the overall volume of the components requiring heating. This allows the use of smaller heating equipment for heating, effectively reducing pre-construction transportation costs and improving the flexibility of on-site scheduling.

[0011] Furthermore, the fixed pile has several channels, and each limiting cavity is connected to the outside through adjacent channels. Several diaphragms are fixedly connected within each channel. The cross-sectional area of ​​the diaphragm within the same channel is not less than the cross-sectional area of ​​the channel, and the melting point of the diaphragm is greater than the working temperature of the node, but less than the isothermal temperature of the elastic element. This design uses channels to discharge gas from the limiting cavity, thereby reducing the negative impact of rising gas pressure on the pin installation.

[0012] Furthermore, the cross-sectional area of ​​the channel at one end near the limiting cavity is smaller than that at the other end. In this design, by changing the size of the cross-sectional area at both ends of the channel, the gas velocity flowing out of the limiting cavity can be gradually reduced, so as to avoid the gas flow velocity being too fast, which would reduce the heat transfer efficiency between the gas and the diaphragm, and cause the molten diaphragm to be blown out of the channel by the fast gas, thus affecting the diaphragm closure.

[0013] Furthermore, the elastic element and the limiting element are arranged alternately in the vertical direction. This design effectively avoids the torque superposition caused by the offset of the fixed force point when arranged in a single direction, thus improving the stability of the structure.

[0014] Furthermore, the end of the hook is provided with anti-detachment teeth. Compared with the prior art, the anti-detachment teeth design in this solution further reduces the probability of the elastic element falling off the hook during use, and further improves the stability of the structure.

[0015] Furthermore, the adjacent anti-detachment teeth are arranged in an alternating direction. This alternating arrangement of the anti-detachment teeth, compared to a unidirectional arrangement, can better prevent lateral displacement of the elastic element, significantly improving the stability of the limiting element's operation.

[0016] Furthermore, the hook is a U-shaped hook. Compared to the S-shaped hook design, this design, under stress, has a more consistent structural curvature, and deformation requires overcoming the continuity of the overall bending, thus making it more resistant to deformation.

[0017] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0018] 1. In this utility model, the elastic element is designed and heated simultaneously during the installation of the fixed pile. This allows the elastic element to undergo plastic deformation along with the installation of the fixed pile, so that the elastic element is in a free state after installation. Compared with the prior art, this solution can compensate for the tension of the geocell by the deformation of the elastic element when creep occurs in the geocell. Moreover, compared with the solution of using the elastic element to clamp and squeeze the fixed pile after installation, this solution allows the elastic element to be in a free state when there is no tension loss in the geocell, effectively avoiding the elastic element from being continuously subjected to stress under normal tension in the geocell, thus preventing fatigue.

[0019] 2. In addition, the present invention also uses a pin design consisting of an inner rod and an outer tube. Compared with the prior art, this solution only requires heating the inner rod to simultaneously achieve the heating of the elastic element and the installation requirements of the interference fit between the pin and the fixed pile. This greatly reduces the total volume of the components that need to be heated. This allows the solution to use a smaller heating device for heating, effectively reducing transportation costs before construction and improving the flexibility of on-site scheduling.

[0020] 3. In addition, through the design of channels and diaphragms, this utility model can reduce the obstruction to component installation caused by the increase in gas pressure due to the reduction in volume and the increase in temperature between various components. Moreover, this solution can use the heat carried by the gas during the exhaust process to melt the diaphragm at the same time, so that the diaphragm can gradually close as the installation is completed, thereby sealing the channel and preventing the backfill material from entering the limiting cavity or the gap of the tenon and mortise through the channel during the subsequent backfilling process, which would cause structural wear. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a top view of the fixed pile in this utility model;

[0024] Figure 3 This is a front view of the fixed pile in this utility model;

[0025] Figure 4 for Figure 2 Cross-sectional view along the AA direction;

[0026] Figure 5 for Figure 3 Cross-sectional view along the BB direction;

[0027] Figure 6 for Figure 4 Enlarged view of point C in the middle;

[0028] Figure 7 for Figure 5 Enlarged view at point D;

[0029] Figure 8 This is a schematic diagram of the diaphragm in this utility model;

[0030] Figure 9 This is a schematic diagram of the installation of the fixed pile in this utility model;

[0031] Figure 10 This is a schematic diagram of the sheet material in this utility model.

[0032] The reference numerals in the attached drawings represent: 1. Fixed stake; 11. Hole; 12. Drill bit; 13. Tenon; 14. Mortise; 2. Limiting cavity; 21. Hook; 22. Anti-dislodgement tooth; 3. Channel; 31. Diaphragm; 4. Pin; 41. Outer tube; 42. Inner rod; 5. Elastic element; 6. Sheet; 61. Mounting hole; 62. Deformation groove; 63. Pre-folding groove. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are for explaining the utility model only and are not intended to limit the utility model. It should be noted that this utility model is already in the actual research and development stage.

[0034] Example 1

[0035] like Figures 1 to 10As shown, this embodiment includes several sheets 6, each sheet 6 is welded and fixed to an adjacent sheet 6 to form a node. Each sheet 6 is also provided with mounting holes 61, and several deformation grooves 62 are formed at the node positions. Each deformation groove 62 has a pre-folding groove 63 at both ends. A fixing post 1 is detachably connected to the node via a pin 4. The fixing post 1 includes a tenon 13 and a mortise 14. The tenon 13 and mortise 14 can push the areas at the upper and lower ends of the deformation grooves 62 on the sheet 6, causing the sheet 6 to undergo plastic deformation, thereby fixing it to the sheet 6. A portion of the tenon 13 can pass through the mounting hole 61 and be inserted into the mortise 14. The tenon 13 and the mortise 14 are detachably connected in a finger-like manner. Both the tenon 13 and the mortise 14 have holes 11, and both the tenon 13 and the mortise 14 are interference-fitted with the pin 4 through the holes 11, i.e., the diameter of the hole 11 is slightly smaller than the diameter of the pin 4. The fixing post 1... Both ends are provided with drill bits 12. In this embodiment, any one drill bit 12 is integrally formed with the tenon 13, and the other drill bit 12 is integrally formed with the mortise 14. The fixing post 1 is provided with several limiting members and several elastic members 5. The limiting members include hooks 21. The tenon 13 and the mortise 14 are both provided with limiting cavities 2 for limiting the shape of the elastic members 5. The hooks 21 are all welded and fixed to the side walls of the adjacent limiting cavities 2. The elastic members 5 and the limiting members are arranged alternately in the vertical direction. The elastic members 5 are all detachably connected to the adjacent hooks 21. The elastic members 5 are bonded and fixed to the side walls of the tenon 13 or the mortise 14. The equal strength temperature of the elastic members 5 and the fixing post 1 is higher than the working temperature of the sheet 6. However, the equal strength temperature of the elastic members 5 and the fixing post 1 is much lower than the equal strength temperature of the sheet 6. The equal strength temperature of the fixing post 1 is higher than the equal strength temperature of the elastic members 5.

[0036] The end of the hook 21 is provided with anti-detachment teeth 22, which are integrally formed with the hook 21. The anti-detachment teeth 22 of adjacent hooks 21 are arranged in staggered directions. The hook 21 is a U-shaped hook 21.

[0037] The specific implementation method is as follows: In the process of using this solution, a fixed pile 1 with a suitable drill bit 12 is selected according to the construction environment. For example, when the anchoring quality requirement is high, a conical drill bit 12 can be selected to ensure that the fixed pile 1 can be basically perpendicular to the base layer during the installation process, so as to improve its anchoring force. According to the construction specifications of geocell, the geocell is fully and evenly tensioned along the main direction of the geocell, and the device is installed on the node at the same time.

[0038] During the installation of this device, the tenon 13 and mortise 14 are heated to a temperature exceeding the equivalent strength temperature of the elastic element 5, but below the equivalent strength temperature of the sheet 6. This temperature will not cause changes in the microstructure or macroscopic properties of the sheet 6. However, as the temperature of the elastic element 5 exceeds its own equivalent strength temperature, the tenon 13 and mortise 14 are placed on both sides of the joint, and the tenon 13 and mortise 14 are pressed down. The tenon 13 and mortise 14 push the upper and lower areas of the deformation groove 62 of the sheet 6 to deform along the pre-folding groove 63, so that the joint position of the sheet 6 fits. The tenon 13 and mortise 14 are positioned and shaped, which simultaneously pushes the drill bit 12 part into the base layer and causes the tenon 13 and mortise 14 to squeeze against each other, so that the elastic element 5 on the tenon 13 and mortise 14 can pass through the mounting hole 61 to the other side of the sheet 6. At this time, the elastic modulus of the elastic element 5 drops sharply. Under the pressure applied by the tenon 13 and mortise 14, the elastic element 5 undergoes plastic deformation along the inner wall of the limiting cavity 2 and the shape of the hook 21. When the hole 11 reserved on the tenon 13 can roughly coincide with the hole 11 on the mortise 14, the pin 4 is inserted to complete the installation of the device.

[0039] After installation, the device is left to stand still. Since the temperature of the elastic element 5 and the fixing post 1 is higher than the working temperature of the sheet 6 (i.e. the temperature at which the sheet 6 is installed and used) when the installation is completed, there is a temperature difference between the elastic element 5 and the fixing post 1 and the surrounding environment. The heat is gradually transferred to the surrounding environment. When the temperature drops below the equal temperature of the elastic element 5, the elastic modulus of the elastic element 5 is basically restored, and at this time the shape of the elastic element 5 is basically fitted, and the elastic element 5 is in a free state.

[0040] Meanwhile, during the heating process of the tenon 13 and mortise 14, due to thermal expansion and contraction, the tenon 13 and mortise 14 will expand to a certain extent. At this time, the diameter of the hole 11 will also increase, so that the hole 11 can accommodate the pin 4. As the temperature of the tenon 13 and mortise 14 decreases, the hole 11 will gradually shrink, achieving an interference fit with the pin 4.

[0041] This scheme uses a finger-shaped connection to limit the longitudinal relative movement between the tenon 14, tenon 13, and sheet 6. A pin 4 restricts the lateral relative movement of the tenon 14 and tenon 13. After the fixing pile 1 is inserted into the base layer, it restricts the lateral displacement of the sheet 6. Simultaneously, due to the geocell design, as the sheet 6 gradually unfolds, the sheets 6 mutually constrain each other, ensuring they are essentially perpendicular to the base layer. At this point, construction personnel only need to verify the installation qualification of the fixing pile 1 by observing the positional relationship between the sheet 6 and the base layer. Furthermore, because the installation of the fixing pile 1 is completed in two parts, this scheme allows for timely and continuous fine-tuning of the fixing pile 1 during implementation, ensuring it is installed in the appropriate position. Compared to the traditional anchor-based fixing scheme, this scheme has a higher tolerance for error during installation, effectively reducing the difficulty of construction and subsequent inspection.

[0042] Furthermore, this solution uses heating to cause the elastic element 5 to undergo plastic deformation, allowing it to adapt to the shape of the limiting cavity 2 and hook 21 after installation, thus fixing the elastic element 5. Compared to traditional U-shaped anchors, this solution utilizes the elastic element 5 to compensate for the tension loss of the geocell when creep occurs under external loads during the geocell's service life, maintaining the lateral constraint force of the geocell on the fill material. This significantly extends the service life of traditional geocells and ensures that they remain in a safe and effective service state throughout the entire process from the onset of creep to the end of the extended service life. Moreover, since the elastic element 5 is in a free state after installation and only deforms when the geocell tension is lost, it effectively avoids fatigue caused by continuous stress on the elastic element 5 under normal geocell tension.

[0043] Meanwhile, during the implementation of this scheme, the tenon 13 and mortise 14 need to be heated, which enables the elastic element 5 to undergo plastic deformation while simultaneously installing the interference fit pin 4, thereby further improving the stability of the fixed pile 1.

[0044] Furthermore, this scheme employs an alternating arrangement of the elastic element 5 and the limiting element. Compared to the scheme where the elastic element 5 and the limiting element are arranged on the same side, the installation position of the elastic element 5 is not at the axial center of the fixed pile 1. This results in the fixed force points of the elastic element 5 and the limiting element not coinciding with their axial center. During subsequent construction, any force acting on the fixed pile 1 may generate torque at the fixed force points of the elastic element 5 and the limiting element. Using a continuous arrangement, the fixed force points are offset in the same direction, which may lead to torque superposition and exacerbate the damage of torque to the overall structure. However, by using an alternating arrangement, the fixed force points of adjacent sets of limiting elements and elastic elements 5 are offset in opposite directions, thereby gradually canceling out the torque and effectively reducing the damage of torque to the overall stability of the structure.

[0045] In this design, a U-shaped hook 21 is used to fix the elastic element 5. Compared with other shapes such as S-shaped hooks 21, this design is more stable and less prone to deformation under the action of the elastic element 5. Furthermore, the design of the anti-detachment teeth 22 allows the lateral displacement of the elastic element 5 to be limited after it is fixed, further enhancing the limiting ability of the hook 21 on the elastic element 5. In addition, the design also uses an alternating arrangement of the anti-detachment teeth 22 so that the torque applied to the elastic element 5 by adjacent anti-detachment teeth 22 is opposite in direction, thus canceling each other out and avoiding the situation where the torque superposition may accelerate the deterioration of the elastic element 5.

[0046] Example 2

[0047] The difference from the above embodiment is that: the pin 4 includes an outer tube 41, the tenon 13 and the mortise 14 are both interference-fitted with the outer tube 41 through the hole 11, and the outer tube 41 is provided with an inner rod 42, the diameter of the inner rod 42 is the same as the inner diameter of the outer tube 41.

[0048] The specific implementation method is as follows: In the process of using this solution, only the inner rod 42 is heated. When the hole 11 on the tenon 13 is basically aligned with the tenon 14, the heated inner rod 42 can be inserted. As the installation proceeds, the heat on the inner rod 42 is transferred to the elastic element 5, raising the temperature of the elastic element 5, the tenon 13 and the tenon 14, so as to cause the elastic element 5 to undergo plastic deformation. At the same time, the hole 11 is heated to cause it to expand. After it expands, the outer tube 41 is inserted, so that the outer tube 41 and the hole 11, and the outer tube 41 and the inner rod 42 are interference fit, thereby realizing the installation of the fixed pile 1.

[0049] Compared to the previous solution, this solution only requires heating the inner rod 42. Under the premise of heating the same number of fixed piles 1, the total volume of the components that need to be heated is greatly reduced. This allows the solution to use a smaller heating device, effectively reducing transportation costs before construction and improving the flexibility of on-site scheduling.

[0050] Meanwhile, by using the inner rod 42 to heat the elastic element 5, excessive heat transfer to the sheet 6 can be reduced, thus preventing the sheet 6 from deteriorating. Furthermore, the heating method using the inner rod 42 ensures that the tenon 13 and mortise 14 remain at room temperature during the connection process, effectively reducing the probability of burns to operators compared to the previous method. In this method, the elastic element's temperature only gradually increases to above its equivalent strength temperature after the fixed pile 1 is basically installed. Compared to the previous method where the elastic element 5 remains above its equivalent strength temperature from the initial installation stage, this method effectively avoids irreversible damage to the elastic element 5 due to thermal aging, enhancing the method's ability to compensate for subsequent geocell tension.

[0051] Example 3

[0052] The difference from the above embodiment is that: the fixed pile 1 also has several channels 3, and the limiting cavity 2 is connected to the outside through adjacent channels 3. The cross-sectional area of ​​one end of the channel 3 near the limiting cavity 2 is smaller than that of the other end. Several diaphragms 31 are bonded and fixed in the channel 3. The cross-sectional area of ​​the diaphragm 31 in the same channel 3 is not less than the cross-sectional area of ​​the channel 3. The melting point of the diaphragm 31 is greater than the working temperature of the node. The melting point of the diaphragm 31 is less than the equal strength temperature of the elastic element 5.

[0053] The specific implementation method is as follows: When using this solution, since the melting point of the diaphragm 31 is lower than the working temperature of the node, and no external force is applied to the diaphragm 31 during the installation of the tenon 13 and the tenon 14, the shape of the diaphragm 31 does not undergo plastic deformation. As the installation proceeds, after the inner rod 42 is inserted into the hole 11, the heat is transferred to the limiting cavity 2 and gradually transferred to the diaphragm 31. As the temperature of the diaphragm 31 rises, and at the same time as the temperature of the gap between the tenon 13 and the tenon 14 and the gas inside the hole 11 rises, and with the insertion of the outer tube 41, the gas inside the hole 11 is discharged from the upper and lower ends of the hole 11. Some of the gas inside the limiting cavity 2 is discharged from the channel 3 because it encounters less resistance when it is discharged from the channel 3. As the heated gas is discharged from the channel 3, the temperature of the diaphragm 31 rises faster.

[0054] When the temperature of the diaphragm 31 rises to its melting point, it shows signs of melting. At this point, because the heat transferred to the diaphragm 31 through the sidewall of the channel 3 is largely absorbed by the tenon 13 or the mortise 14, while the heat loss through direct gas transfer to the diaphragm 31 is smaller, the side of the diaphragm 31 closer to the adjacent position heats up faster and reaches its melting point more quickly than the side closer to the sidewall of the channel 3. As installation is completed, the airflow through the channel 3 decreases, and the force exerted by the airflow on the diaphragm 31 cannot overcome gravity and the elasticity of the diaphragm 31 itself, causing the molten sidewalls of the diaphragm 31 to move closer together. During the above process, as the temperature of the geocell and the fixed pile 1 gradually decreases, the temperature of the diaphragm 31 drops below its melting point. The side walls of the diaphragm 31 melt and adhere to each other, closing the channel 3. Subsequently, the gas on the side of the channel 3 near the limiting cavity 2 continues to cool, and the gas volume shrinks, causing the air pressure inside the limiting cavity 2 to drop. This further prevents the tenon 13 and the tenon 14 from shifting. After the diaphragm 31 closes the channel 3, it can also prevent the backfill material from entering the limiting cavity 2 or the gap of the tenon 13 and the tenon 14 through the channel 3 during the layered backfilling after the geocell is installed, causing structural wear and affecting the life of the structure.

[0055] Meanwhile, in this solution, through the design of the diaphragm 31, when the air inside the limiting cavity 2 is discharged, the airflow blows the diaphragm 31 to the side away from the limiting cavity 2. At this time, when the gas flowing into the channel 3 from the outside comes into contact with the diaphragm 31, it pushes the diaphragm 31 to deform, so that the diaphragm 31 is further closed, thereby achieving the purpose of preventing the external airflow from entering the limiting cavity 2.

[0056] Compared to the solution without channel 3, this solution can help to expel some of the air between the tenon 13 and the mortise 14 and the air inside the limiting cavity 2 through channel 3, effectively preventing the internal air pressure from hindering the outer tube 41 and affecting the installation of the structure, and effectively preventing the expansion of the internal air from pushing the outer cylinder or inner rod 42 to shift and affecting the stability of the fixed column.

[0057] Meanwhile, this scheme also changes the cross-sectional area at both ends of channel 3 to gradually enlarge the gas flow cross-section, thereby gradually slowing down the airflow speed. Compared with the design of equal area flow cross-section and gradually reducing flow cross-section, this scheme retains the function of channel 3 to discharge waste gas, while also slowing down the airflow speed through diaphragm 31, avoiding excessive airflow speed that could blow the molten diaphragm 31 out of channel 3 and affect the closure of diaphragm 31.

[0058] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A high-strength geocell with a fixed stake, comprising a plurality of sheets (6), each of the sheets (6) is fixedly connected with adjacent sheets (6) to form a node, characterized in that: A fixed pile (1) is detachably connected to the node via a pin (4). The two ends of the fixed pile (1) are provided with drill bits (12). The fixed pile (1) is provided with several limiting members and several elastic members (5). The elastic members (5) are detachably connected to the adjacent limiting members. The equal strength temperature of the elastic members (5) and the fixed pile (1) is higher than the working temperature of the sheet (6). The equal strength temperature of the fixed pile (1) is higher than the equal strength temperature of the elastic members (5).

2. A high-strength geocell with a fixing pile according to claim 1, characterized in that: The fixed pile (1) includes a tenon (13) and a mortise (14), the tenon (13) and the mortise (14) are detachably connected, and both the tenon (13) and the mortise (14) are interference fit with the pin (4).

3. A high-strength geocell with a fixing pile according to claim 2, characterized in that: The limiting member includes a hook (21), and both the tenon (13) and the mortise (14) have limiting cavities (2) for limiting the shape of the elastic member (5), and the hook (21) is fixedly connected to the side wall of the adjacent limiting cavity (2).

4. A high-strength geocell with a fixing pile according to claim 1, characterized in that: The pin (4) includes an outer tube (41), which is interference-fitted with the fixed pile (1). An inner rod (42) is provided inside the outer tube (41), and the diameter of the inner rod (42) is the same as the inner diameter of the outer tube (41).

5. A high-strength geocell with a fixing pile according to claim 3, characterized in that: The fixed pile (1) also has several channels (3), and the limiting cavity (2) is connected to the outside through the adjacent channels (3). Several diaphragms (31) are fixedly connected in the channels (3). The cross-sectional area of ​​the diaphragm (31) in the same channel (3) is not less than the cross-sectional area of ​​the channel (3), and the melting point of the diaphragm (31) is greater than the working temperature of the node. The melting point of the diaphragm (31) is less than the equal strength temperature of the elastic element (5).

6. A high-strength geocell with a fixing pile according to claim 5, characterized in that: The cross-sectional area of ​​the channel (3) at one end near the limiting cavity (2) is smaller than that at the other end.

7. A high-strength geocell with a fixing pile according to claim 1, characterized in that: The elastic element (5) and the limiting element are arranged alternately in the vertical direction.

8. A high-strength geocell with a fixed pile according to claim 3, characterized in that: The end of the hook (21) is provided with anti-detachment teeth (22).

9. A high-strength geocell with a fixing pile according to claim 8, characterized in that: The directions of the adjacent anti-detachment teeth (22) are staggered.

10. A high-strength geocell with a fixing pile according to claim 9, characterized in that: The hook (21) is a U-shaped hook (21).

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