Geogrid for road construction

Abstract

The utility model provides a geogrid for road construction, which comprises a grid body, and the grid body comprises transverse ribs and longitudinal ribs which are arranged in a criss-cross manner; connecting parts are formed at the two ends of each transverse rib on the two transverse opposite sides of the grille body, and vertically-through through holes are formed in the connecting parts. The connecting parts of every two adjacent grille bodies can be in lap joint with each other, and a plug pin can be inserted into the two through holes of the two connecting parts which are in lap joint with each other. According to the geogrid for road construction, the connecting parts and the plug pins are arranged in a matched mode, the plug pins can penetrate through the through holes in the connecting parts of the two adjacent grid bodies to form transverse constraint on the two connecting parts, and therefore the two adjacent grid bodies are connected together in the transverse direction; therefore, the overall tensile property of the geogrid is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of civil engineering tools, in particular to a geogrid for road construction. Background Art

[0002] In the field of civil engineering, geogrids, as an important geosynthetic material, play a vital role, particularly in road construction and foundation treatment. Geogrids have high tensile strength and tensile modulus, which can evenly distribute load stress, significantly enhancing the stability and load-bearing capacity of the structure.

[0003] Currently, due to the wide width of the construction road and the limited width of the geogrid, multiple geogrids need to be spliced together during the laying process. However, in actual use, only the edges of the geogrids are overlapped and fixed to the ground with U-shaped anchor nails. This splicing method does not stitch the geogrids together, and the overlapping joints of the geogrids are not tightly fitted and easily slide out of position, resulting in poor tensile strength of the geogrid. Therefore, how to ensure effective splicing between geogrids to improve the tensile strength of the overall structure is a technical problem that needs to be solved. Utility Model Content

[0004] In view of this, the present invention aims to provide a geogrid for road construction, which can splice adjacent grid bodies to improve the tensile strength of the geogrid.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0006] A geogrid for road construction comprises a grid body, the grid body comprising transverse ribs and longitudinal ribs arranged in a crisscross pattern; connecting portions are formed at both ends of each of the transverse ribs on opposite transverse sides of the grid body, and each connecting portion is provided with a through hole extending vertically therethrough; the connecting portions of two adjacent grid bodies can overlap each other, and a pin can be inserted into the two through holes of the two overlapping connecting portions.

[0007] Furthermore, the transverse ribs and the longitudinal ribs are both composed of an inner core and a plastic layer covering the inner core; the inner core in the transverse ribs is in the shape of a long ring extending along the length direction of the transverse ribs and connected end to end, and the two through holes are located and surrounded by the inner core.

[0008] Furthermore, the connecting portion includes a pressing portion and an overlapping portion, and the pressing portions of any one of the grille bodies can be overlapped on the overlapping portions of another grille body; the pressing portion is extended from the upper surface of the transverse rib to form an inverted step shape with the lower surface of the transverse rib; the overlapping portion is extended from the lower surface of the transverse rib to form a step shape with the upper surface of the transverse rib.

[0009] Furthermore, on any of the transverse ribs, the pressing portion and the overlapping portion are arranged at both ends of the transverse rib; and / or, on the end portion on the same side of each of the transverse ribs, the pressing portion and the overlapping portion are alternately arranged on each of the transverse ribs.

[0010] Furthermore, the transverse rib is provided with a hook, and the hook is arranged at both ends of the transverse rib, and the hook is arranged at one end of the transverse rib away from the pressing part or the overlapping part; the hook includes an extension part extending outward along the length direction of the transverse rib, and a clamping part at one end of the extension part facing the pressing part or the overlapping part; a clamping groove for accommodating the clamping part is formed on the side of the pressing part and the overlapping part away from the hook.

[0011] Furthermore, an inclined guiding surface is formed on one outward end of the clamping portion along the length direction of the transverse rib.

[0012] Furthermore, a limiting plate is provided on the top of the latch, and a limiting protrusion is provided on the outer periphery of the latch; when the latch is inserted into the through hole, the limiting plate abuts against the top of one of the connecting parts, and the limiting protrusion is located below the other connecting part.

[0013] Furthermore, the limiting protrusion is an annular protrusion surrounding the latch.

[0014] Furthermore, bosses extending outward from the grille body are formed on both upper and lower sides of the intersection of the transverse ribs and the longitudinal ribs.

[0015] Furthermore, at the intersection of the transverse ribs and the longitudinal ribs, reinforcing ribs are provided between adjacent transverse ribs and the longitudinal ribs.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] The geogrid for road construction described in the utility model is arranged in cooperation with the connecting part and the pin. The pin can pass through the through hole on the connecting part of two adjacent grid bodies to constitute a lateral constraint on the two connecting parts, thereby connecting the two adjacent grid bodies together in the transverse direction to improve the overall tensile resistance of the geogrid.

[0018] Furthermore, both the transverse and longitudinal ribs consist of an inner core and a plastic layer covering the inner core, enhancing the structural strength of the grille body. The inner core in the transverse rib surrounds the two through-holes, reinforcing the connection. When tension is applied to the connection, the inner core can partially withstand the force, thereby increasing the tensile strength of the connection. The connection comprises a compression portion and an overlapped portion, facilitating the connection of two grille bodies.

[0019] Additionally, a compression portion and an overlap portion are provided at both ends of a transverse rib, so that opposing sides of two adjacent grille bodies are provided with a compression portion and an overlap portion, respectively, to facilitate their connection. The compression portions and overlap portions are alternately arranged on each transverse rib, allowing any side of one grille body to connect to any side of another, further facilitating the splicing of the grille bodies.

[0020] Furthermore, the transverse ribs are provided with hooks. Through the arrangement of the hooks and the slots, the engaging portion can be snapped into the slots, securing the hook to the pressing portion or the overlapping portion, ensuring that the two through-holes are always aligned. The engaging portion is formed with an inclined guide surface, allowing the engaging portion to be lifted by the pressing portion or the overlapping portion, and then snapped into the slot, thereby facilitating the hook's engagement with the slot. A limiting plate is provided at the top of the latch, and limiting protrusions are provided on the outer periphery of the latch, which can constrain the pressing portion and the overlapping portion in the height direction to prevent them from detaching from the latch.

[0021] Finally, the stopper protrusion is an annular protrusion surrounding the latch, enhancing its ability to limit the overlap. Bosses extending outward from the grille body are formed on both the upper and lower sides of the intersection of the transverse and longitudinal ribs, improving contact between the grille body and the foundation soil. Reinforcing ribs are provided between adjacent transverse and longitudinal ribs to enhance the connection strength at the intersection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of the overall structure of the geogrid for road construction according to an embodiment of the present utility model;

[0024] Figure 2 A top view of a geogrid for road construction according to an embodiment of the present utility model;

[0025] Figure 3 This is a schematic structural diagram of the latch according to an embodiment of the present utility model;

[0026] Figure 4This is a schematic diagram of the connection between two connected grille bodies according to an embodiment of the present utility model;

[0027] Figure 5 For the utility model Figure 4 A cross-sectional view at the position shown in FIG.

[0028] Description of reference numerals:

[0029] 1. Grille body;

[0030] 101, transverse ribs; 1011, inner core; 1012, plastic layer;

[0031] 102, longitudinal ribs;

[0032] 2. Through hole;

[0033] 3. Latch;

[0034] 301, limiting plate; 302, limiting protrusion;

[0035] 4. Pressing part;

[0036] 5. Overlap joint;

[0037] 6. Hook;

[0038] 601, extension portion; 602, clamping portion;

[0039] 7. Card slot;

[0040] 8. Boss;

[0041] 9. Strengthen the ribs. DETAILED DESCRIPTION

[0042] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0043] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present application with unnecessary detail.

[0044] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," and "outer" appear to indicate orientation or positional relationships, these are based on the orientation or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, if terms such as "first" and "second" appear, they are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0045] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "mounted," "connected," "connection," and "connector" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0046] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0047] This embodiment relates to a geogrid for road construction, the overall structure of which is as follows: Figure 1 As shown, the grille body 1 includes transverse ribs 101 and longitudinal ribs 102 arranged in a crisscross pattern.

[0048] On opposite sides of the grille body 1, each transverse rib 101 has a connecting portion formed at both ends, each of which is provided with a through hole 2 extending vertically therethrough. The connecting portions of two adjacent grille bodies 1 can overlap each other, and a latch 3 can be inserted into the two through holes 2 of the overlapping connecting portions.

[0049] As described above, by cooperating with the connecting portion and the pin 3, the pin 3 can pass through the through hole 2 on the connecting portion of two adjacent grid bodies 1 to constitute a lateral constraint on the two connecting portions, thereby connecting the two adjacent grid bodies 1 together in the lateral direction to improve the overall tensile strength of the geogrid.

[0050] Based on the above overall introduction, specifically, the length of the grid body 1 in the longitudinal direction of this embodiment is longer, that is, the length of the longitudinal ribs 102 is longer, so that the grid body 1 can be rolled up in the longitudinal direction for easy transportation and laying. And two adjacent grid bodies 1 are connected by pins 3. When the geogrid is stretched, the pins 3 are subjected to a large shear force. In order to improve the structural strength of the pins 3, such as Figure 2 、 Figure 3As shown, the cross section of the latch 3 of this embodiment is an oblong, and the through hole 2 is a waist-shaped hole, so that the latch 3 has a greater thickness in the shear force direction to ensure the structural strength of the latch 3.

[0051] In order to improve the tensile strength of the grid body 1 and enhance the structural strength of the grid body 1 to ensure its strengthening effect on the foundation, Figure 2 As shown, the transverse ribs 101 and longitudinal ribs 102 of this embodiment are each composed of an inner core 1011 and a plastic layer 1012 covering the inner core 1011. The inner core 1011 of the transverse rib 101 is in the shape of a long ring extending along the length of the transverse rib 101 and connected end to end. The two through holes 2 are located and surrounded by the inner core 1011. The arrangement of the inner core 1011 and the plastic layer 1012 improves the structural strength of each grille body 1.

[0052] Furthermore, it is understandable that Figure 2 and Figure 5 As shown, two adjacent grille bodies 1 are connected by a connecting portion and a latch 3. Due to the presence of a through hole 2 in the connecting portion, the connecting portion is relatively weak and easily broken due to tension. By providing an inner core 1011 surrounding the through hole 2, the inner core 1011 can reinforce the connecting portion and, when the connecting portion is subjected to tension, can withstand part of the tension, thereby increasing the tensile strength of the connecting portion and improving the tensile resistance and structural strength of the grille body 1. In a specific implementation, the inner core 1011 of this embodiment can be a conventional polymer core material, a glass fiber core material, a steel wire rope, etc., as known to those skilled in the art.

[0053] In this embodiment, if Figure 1 and Figure 4 As shown, the connection portion includes a pressing portion 4 and an overlapping portion 5. The pressing portions 4 of any grid body 1 can overlap the overlapping portions 5 of another grid body 1. The pressing portion 4 extends from the upper surface of the transverse rib 101, forming an inverted step with the lower surface of the transverse rib 101. The overlapping portion 5 extends from the lower surface of the transverse rib 101, forming a step with the upper surface of the transverse rib 101. By setting the pressing portion 4 and the overlapping portion 5, the two grid bodies 1 can be easily connected. At the same time, the thickness of the pressing portion 4 and the overlapping portion 5 after connection is equal to the thickness of the transverse rib 101, which can ensure the flatness of the geogrid of this embodiment during laying, thereby improving the use effect of the geogrid of this embodiment.

[0054] In order to further facilitate the splicing of two adjacent grille bodies 1, on any transverse rib 101 of this embodiment, the pressing portion 4 and the overlapping portion 5 are respectively arranged at both ends of the transverse rib 101. Such an arrangement enables the opposite sides of the two adjacent grille bodies 1 to be respectively provided with a pressing portion 4 and an overlapping portion 5 to facilitate their connection.

[0055] Since, in the actual process of laying geogrids, it is easy for two adjacent grid bodies 1 to have both the pressing portion 4 or both the overlapping portion 5 on the same side, it is necessary to reverse the direction of one grid body 1. Therefore, in this embodiment, at the end of each transverse rib 101 on the same side, the pressing portion 4 and the overlapping portion 5 are alternately arranged on each transverse rib 101. This arrangement avoids the need to reverse the direction of the grid body 1, allowing any side of one grid body 1 to be connected to any side of another grid body 1, thereby further facilitating the splicing of grid bodies 1.

[0056] Furthermore, since the two connecting portions, namely the pressing portion 4 and the overlapping portion 5, are connected only by the latch 3, the operator must align the through-holes 2 on the pressing portion 4 and the overlapping portion 5 before inserting the latch 3 during installation. During this process, the operator must manually hold the pressing portion 4 and the overlapping portion 5 on the two grille bodies 1 and align the through-holes 2, which makes insertion of the latch 3 difficult. To this end, the transverse ribs 101 of this embodiment are provided with hooks 6. These hooks 6 are located at both ends of the transverse ribs, and are located at the end of the transverse rib 101 away from the pressing portion 4 or the overlapping portion 5. The hooks 6 include an extension 601 extending outward along the length of the transverse rib 101, and a snap-in portion 602 at one end of the extension 601, facing toward the pressing portion 4 or the overlapping portion 5. A slot 7 for accommodating the snap-in portion 602 is formed on the sides of the pressing portion 4 and the overlapping portion 5 facing away from the hook 6.

[0057] By providing the hook 6 and the slot 7, after the pressing portion 4 and the overlapping portion 5 abut against each other, the engaging portion 602 can be snapped into the slot 7, thereby securing the hook 6 to the pressing portion 4 or the overlapping portion 5, preventing the pressing portion 4 and the overlapping portion 5 from separating and ensuring that the two through holes 2 are always aligned, thereby facilitating the insertion and installation of the latch 3 and reducing labor intensity. In specific implementation, the hook 6 of this embodiment is made of plastic, the same material as the plastic layer 1012 of the transverse rib 101, and is integrally molded on the plastic layer 1012.

[0058] It is worth mentioning that, in order to facilitate hooking the hook 6 into the slot 7, an inclined guide surface is formed on one end of the clamping portion 602 of this embodiment that faces outward along the length direction of the transverse rib 101. By providing the guide surface, the clamping portion 602 can be lifted by the pressing portion 4 or the overlapping portion 5, and then the clamping portion 602 can be inserted into the slot 7, thereby facilitating hooking the hook 6 into the slot 7. In a specific implementation, an inclined guide surface is also formed at one end of the pressing portion 4 and the overlapping portion 5 of this embodiment that abuts against the clamping portion 602.

[0059] When the pressing part 4 and the overlapping part 5 are connected, the pin 3 can constrain the two in the horizontal direction, and can only achieve constraint in the height direction through the hook 6, but the hook 6 only plays a role in positioning the through hole 2, and its structural strength is relatively weak. When the geogrid is subjected to force, the two adjacent grid bodies 1 are prone to shift in the height direction, causing the pressing part 4 and the overlapping part 5 to slip off the pin 3, resulting in a decrease in the splicing effect of the grid body 1.

[0060] For this reason, Figure 3 As shown, in this embodiment, a stop plate 301 is provided at the top of the latch 3, and stop protrusions 302 are provided on the outer periphery of the latch 3. When the latch 3 is inserted into the through-hole 2, the stop plate 301 abuts against the top of one connecting portion, and the stop protrusion 302 is positioned below the other connecting portion. The stop plate 301 and stop protrusion 302 constrain the pressing portion 4 and the overlapping portion 5 in the height direction, preventing them from moving along the latch 3 in the height direction and becoming loose, thereby improving the splicing stability of the grille body 1.

[0061] Specifically, the limiting protrusion 302 is an annular protrusion surrounding the latch 3 , which can improve the limiting effect of the limiting protrusion 302 on the overlapping portion 5 .

[0062] In this embodiment, bosses 8 extending outward from the geogrid body 1 are formed on both the upper and lower sides of the intersection of the transverse ribs 101 and the longitudinal ribs 102. The provision of bosses 8 improves the contact between the geogrid body 1 and the foundation soil, preventing relative sliding between the geogrid and the foundation, effectively restraining lateral displacement of the foundation soil, enhancing the stability of the foundation, and improving the strengthening effect of the foundation.

[0063] Finally, in this embodiment, reinforcing ribs 9 are provided at the intersections of the transverse ribs 101 and the longitudinal ribs 102, and between adjacent transverse ribs 101 and longitudinal ribs 102. The provision of the reinforcing ribs 9 can improve the connection strength at the intersections of the transverse ribs 101 and the longitudinal ribs 102, and to a certain extent prevent the grid body 1 from being damaged by stretching, thereby improving the structural strength and service life of the geocell.

[0064] In summary, the geogrid for road construction of this embodiment is arranged in coordination with the connecting portion and the pin 3. The pin 3 can pass through the through hole 2 on the connecting portion of two adjacent grid bodies 1 to constitute a lateral constraint on the two connecting portions, thereby connecting the two adjacent grid bodies 1 together in the transverse direction to improve the overall tensile strength of the geogrid, and has good practicality.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A geogrid for road construction, characterized by: The invention comprises a grille body (1), wherein the grille body (1) comprises transverse ribs (101) and longitudinal ribs (102) arranged in a crisscross pattern; On two opposite transverse sides of the grille body (1), connecting portions are formed at both ends of each transverse rib (101), and a through hole (2) is provided on the connecting portion that passes through the grille body (1); The connecting parts of two adjacent grille bodies (1) can overlap each other, and a latch (3) can be inserted into the two through holes (2) of the two overlapping connecting parts.

2. The geogrid for road construction according to claim 1, characterized in that: The transverse ribs (101) and the longitudinal ribs (102) are both composed of an inner core (1011) and a plastic layer (1012) covering the inner core (1011); The inner core (1011) in the transverse rib (101) is in the shape of a long ring extending along the length direction of the transverse rib (101) and connected end to end, and the two through holes (2) are located and surrounded by the inner core (1011).

3. The geogrid for road construction according to claim 1, characterized in that: The connecting portion comprises a pressing portion (4) and an overlapping portion (5), and each pressing portion (4) of any one of the grille bodies (1) can be overlapped on each overlapping portion (5) of another grille body (1); The pressing portion (4) is extended from the upper surface of the transverse rib (101) to form an inverted step shape with the lower surface of the transverse rib (101); The overlapping portion (5) is extended from the lower surface of the transverse rib (101) to form a step shape with the upper surface of the transverse rib (101).

4. The geogrid for road construction according to claim 3, characterized in that: On any of the transverse ribs (101), the pressing portion (4) and the overlapping portion (5) are respectively provided at two ends of the transverse rib (101); And / or, at the end portion on the same side of each of the transverse ribs (101), the pressing portion (4) and the overlapping portion (5) are alternately arranged on each of the transverse ribs (101).

5. The geogrid for road construction according to claim 3, characterized in that: The transverse rib (101) is provided with a hook (6), and the hook (6) is provided at both ends of the transverse rib, and the hook (6) is provided at one end of the transverse rib (101) away from the pressing portion (4) or the overlapping portion (5); The hook (6) comprises an extension portion (601) extending outwardly along the length direction of the transverse rib (101), and a clamping portion (602) at one end of the extension portion (601) facing the pressing portion (4) or the overlapping portion (5); A clamping groove (7) for accommodating the clamping portion (602) is formed on the side of the pressing portion (4) and the overlapping portion (5) facing away from the hook (6).

6. The geogrid for road construction according to claim 5, characterized in that: An inclined guiding surface is formed on one end of the clamping portion (602) facing outward along the length direction of the transverse rib (101).

7. The geogrid for road construction according to claim 1, characterized in that: A limiting plate (301) is provided on the top of the latch (3), and a limiting protrusion (302) is provided on the outer periphery of the latch (3); When the latch (3) is inserted into the through hole (2), the limiting plate (301) abuts against the top of one of the connecting parts, and the limiting protrusion (302) is located below the other connecting part.

8. The geogrid for road construction according to claim 7, characterized in that: The limiting protrusion (302) is an annular protrusion surrounding the latch (3).

9. The geogrid for road construction according to any one of claims 1 to 8, characterized in that: Bosses (8) extending outward from the grille body (1) are formed on both upper and lower sides of the intersection of the transverse ribs (101) and the longitudinal ribs (102).

10. The geogrid for road construction according to any one of claims 1 to 8, characterized in that: At the intersection of the transverse ribs (101) and the longitudinal ribs (102), reinforcing rib plates (9) are provided between adjacent transverse ribs (101) and longitudinal ribs (102).

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