A roadbed reinforcing structure for a municipal road
By designing clearance grooves and grid seat structures on the geogrid, the problem of geogrid positional displacement was solved, laying efficiency and stability were improved, and efficient fixing and temporary support of the geogrid were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANTUO CONSTRUCTION CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-06-23
AI Technical Summary
When laying geogrids, the lack of U-shaped nails for positioning makes them prone to displacement, increasing the workload of construction workers and affecting laying efficiency and stability.
The geogrid with relief grooves and grid seat structure are adopted. The geogrid is limited and fixed by the cooperation of plug-in columns and adjusting rods, and the stability and soil falling are ensured by baffles and return springs.
It improves the laying efficiency of geogrids, reduces the frequency of position adjustment, ensures stability, and provides temporary support during earthwork backfilling to prevent collapse and earthwork falling.
Smart Images
Figure CN224395349U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of roadbed reinforcement, and in particular to a roadbed reinforcement structure for municipal roads. Background Technology
[0002] Currently, roadbed reinforcement structures are an important component in ensuring the long-term stability and load-bearing capacity of municipal roads. Roadbed reinforcement mainly targets road foundations in soft soil, high embankment sections, or under special geological conditions, aiming to improve their load-bearing capacity, reduce settlement, and prevent deformation.
[0003] Geogrids are mesh-like structural materials formed by stretching or weaving polymers (such as polypropylene (PP), polyester (PET), and high-density polyethylene (HDPE). They possess high tensile strength and low elongation. Widely used in road, railway, slope, embankment, and retaining wall projects, they are primarily used to reinforce and improve soil stability, enhance bearing capacity, and control settlement. Using geogrids to reinforce roadbeds can significantly improve their stability and bearing capacity, effectively reduce settlement, and extend road service life. Furthermore, it can reduce project costs, as geogrids are more economical and efficient compared to traditional reinforcement methods such as replacement.
[0004] When laying geogrids, it is necessary to ensure that the geogrids are laid in an accurate position, and then use U-shaped nails to press and fix the geogrids to the roadbed. However, during the laying process, due to the lack of U-shaped nails for restraint, the geogrid grids are prone to displacement when subjected to external forces. In order to ensure the reinforcement effect later, the construction personnel need to adjust the position of the geogrid grids again or even multiple times. Since the overall area of the geogrid is relatively large, this will bring considerable inconvenience to the adjustment work and increase the workload. Utility Model Content
[0005] This application provides a roadbed reinforcement structure for municipal roads, which reduces the additional workload during geogrid laying, improves the laying efficiency of geogrid, and ensures the stability of geogrid.
[0006] The technical solution for a roadbed reinforcement structure for municipal roads provided in this application is as follows:
[0007] A roadbed reinforcement structure for municipal roads includes a geogrid for laying on the roadbed surface, wherein the geogrid has clearance grooves arranged at intervals in sequence; it also includes a grid seat for being disposed on one side of the geogrid, wherein a lifting plate is movably disposed on the side of the grid seat opposite to the geogrid, and an adjusting rod is threadedly connected to the grid seat with a length along the lifting direction of the lifting plate, one end of the adjusting rod being rotatably disposed on the lifting plate, and the adjusting rod being used to drive the lifting plate to rise and fall; the grid seat has a through slot for the geogrid to pass through, and the lifting plate is provided with a plurality of insert posts arranged at intervals in sequence, wherein the insert posts are respectively used to pass through their respective opposite clearance grooves.
[0008] Preferably, the barrier seat is provided with a plug seat that is one-to-one with the plug post, and the plug seat is provided with a plug groove for the corresponding plug post to be inserted into the plug seat.
[0009] Preferably, the bottom of the barrier seat is provided with a positioning post for insertion into the roadbed.
[0010] Preferably, a support frame is rotatably mounted on the outer side wall of the grid seat away from the geogrid, and the bottom of the support frame is used to be erected on the roadbed.
[0011] Preferably, an installation seat is provided on the outer side wall of the grid seat away from the geogrid. A lifting rod is slidably provided in the installation seat along the lifting direction of the lifting plate. A baffle is provided at the end of the lifting rod outside the installation seat. A return spring is provided in the installation seat. The return spring extends and retracts along the sliding direction of the lifting rod, and the return spring is used to push the baffle to seal the slot.
[0012] Preferably, the baffle is provided with a connecting plate, the lifting rod is connected to the connecting plate, and the connecting plate is located on the moving path of the lifting plate.
[0013] Preferably, it also includes a pressing plate for pressing the geogrid onto the subgrade, the pressing plate being provided with a fixing member for insertion into the subgrade.
[0014] In summary, this application includes at least one of the following beneficial technical effects:
[0015] By fixing the grid seat on the roadbed, and then fixing one side of the geogrid to the grid seat by inserting a post, one side of the geogrid can be fixed in place, making it less likely to shift position during subsequent laying. This improves the positioning effect of the geogrid, reduces the frequency of subsequent adjustments to the geogrid position by construction workers, reduces the extra workload during geogrid laying, improves the laying efficiency of the geogrid, and ensures the stability of the geogrid.
[0016] The retaining wall provides temporary support for the backfilled soil during subsequent backfilling, preventing soil collapse. Furthermore, sealing the trench opening with baffles effectively prevents soil from falling out.
[0017] By rotating the adjusting rod, the lifting plate is raised upward. Since the connecting plate is located on the rising path of the lifting plate, the lifting plate will drive the baffle to rise synchronously through the connecting plate during the rising process. As the insertion column smoothly exits from the clearance groove of the geogrid and the baffle opens the groove, the grid seat can then be smoothly removed from one side of the geogrid. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure after backfilling in an embodiment of this application;
[0019] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application;
[0020] Figure 3 This is a schematic diagram highlighting a portion of the structure on the back of the guard seat;
[0021] Figure 4 This is an exploded view showing a portion of the mounting base's structure.
[0022] Figure 5 This is an exploded view of a portion of the structure of the pressure plate.
[0023] Explanation of reference numerals in the attached drawings: 1. Geogrid; 10. Clearance groove; 2. Barrier seat; 20. Groove opening; 21. Positioning post; 200. Guide rod; 3. Lifting plate; 30. Insertion post; 31. Insertion seat; 32. Insertion groove; 4. Adjusting rod; 5. Support frame; 6. Mounting seat; 60. Lifting rod; 61. Baffle; 62. Return spring; 63. Connecting plate; 7. Pressing plate; 70. Fixing component; 71. Insert rod. Detailed Implementation
[0024] The present application will be further described in detail below with reference to the accompanying drawings.
[0025] This application discloses a roadbed reinforcement structure for municipal roads.
[0026] Reference Figure 1 , Figure 2The system includes a geogrid 1 for laying on the roadbed surface, with a large number of clearance grooves 10 woven on the geogrid 1 in a sequentially and evenly spaced manner. It also includes a retaining seat 2 for placement on one side of the geogrid 1, with a lifting plate 3 mounted on the side of the retaining seat 2 opposite to the geogrid 1. Two sets of guide rods 200 are fixedly installed on the retaining seat 2, symmetrically arranged on both sides of the lifting plate 3. The length of the guide rods 200 extends along the lifting direction of the lifting plate 3, and the left and right sides of the lifting plate 3 are respectively movably inserted through the guide rods 200.
[0027] like Figure 3 , Figure 4 As shown, an adjusting rod 4 is also threadedly connected to the baffle seat 2, located between the two guide rods 200. The length of the adjusting rod 4 is set along the lifting direction of the lifting plate 3. The lower end of the adjusting rod 4 rotates and is limited on the lifting plate 3, while the upper end of the adjusting rod 4 is threadedly connected to the baffle seat 2. By rotating the adjusting rod 4, the lifting plate 3 will rise and fall along the length direction of the two guide rods 200 under the drive of the adjusting rod 4.
[0028] like Figure 3 , Figure 4 As shown, a plurality of insertion posts 30 are fixedly installed at the bottom of the lifting plate 3, arranged sequentially at intervals along the length of the lifting plate 3. The insertion posts 30 are used to pass through the clearance grooves 10 of their respective counterparts in the geogrid 1. The grid seat 2 is also fixedly installed with insertion seats 31 that are one-to-one with the upper insertion posts 30. The top of the insertion seat 31 is provided with insertion grooves 32 for the respective insertion posts 30 to be inserted into the insertion seat 31 from top to bottom.
[0029] like Figure 3 , Figure 4 As shown, the grid seat 2 has a through slot 20 for the geogrid 1 to pass through from the front to the back of the grid seat 2. After one side of the geogrid 1 passes through the slot 20 to the back of the grid seat 2, the lifting plate 3 is gradually lowered under the guidance of the guide rods 200 on both sides by rotating the adjusting rod 4, until the insertion post 30 passes through its respective relief groove 10 and is inserted into the corresponding insertion groove 32. At this time, one side of the geogrid 1 will be fixed on the grid seat 2 by the limiting of the insertion post 30.
[0030] like Figure 3 , Figure 4As shown, the bottom of the retaining base 2 is threaded with two positioning posts 21. The positioning posts 21 are symmetrically arranged on the left and right sides of the retaining base 2. The positioning posts 21 are used to insert into the roadbed from top to bottom and fix the retaining base 2 on the roadbed. Multiple support frames 5 are also rotatably arranged on the outer wall of the retaining base 2 away from the geogrid 1. The support frames 5 are arranged sequentially at intervals along the length of the retaining base 2, and the bottom of the support frames 5 is used to support the roadbed. The rotation axis of the support frames 5 is set along the lifting direction of the lifting plate 3. By rotating the placement angle of the support frames 5, the retaining base 2 can be better supported.
[0031] By fixing the grid seat 2 on the roadbed, and then fixing one side of the geogrid 1 to the grid seat 2 by the plug post 30, one side of the geogrid 1 can be fixed and limited, making it less likely to shift position during subsequent laying. This improves the positioning effect of the geogrid 1, reduces the frequency of subsequent position adjustments by construction personnel, reduces the extra workload during the laying of the geogrid 1, improves the laying efficiency of the geogrid 1, and ensures the stability of the geogrid 1.
[0032] like Figure 3 , Figure 4 As shown, two mounting seats 6 are fixedly installed on the outer wall of the retaining seat 2 away from the geogrid 1. The mounting seats 6 are located above the lifting plate 3 and are symmetrically arranged on the left and right sides of the retaining seat 2. A lifting rod 60 is slidably installed on the mounting seat 6 along the lifting direction of the lifting plate 3. The upper end of the lifting rod 60 is limited inside the mounting seat 6, and the lower end of the lifting rod 60 protrudes from the bottom of the mounting seat 6. The same baffle 61 is fixedly installed on the protruding lifting rod 60. A connecting plate 63 is fixedly installed on the baffle 61. The bottom of the lifting rod 60 is connected and fixed to its corresponding connecting plate 63, and the connecting plate 63 is located on the movement path of the lifting plate 3.
[0033] like Figure 3 , Figure 4 As shown, a return spring 62 is provided inside the mounting base 6. The return spring 62 extends and retracts along the lifting direction of the lifting rod 60. The upper end of the return spring 62 abuts against the inner side wall of the mounting base 6, and the lower end of the return spring 62 abuts against the top wall of the lifting rod 60. In its natural state, the return spring 62 is used to push the baffle 61 down and seal the slot 20.
[0034] After one side of the geogrid 1 is passed through the opening 20 to the back of the retaining seat 2, the baffle 61, under the action of the return spring 62 and its own weight, further presses and fixes the geogrid 1 onto the retaining seat 2, thereby further improving the clamping and fixing effect of the geogrid 1 and enhancing the connection reliability between the geogrid 1 and the retaining seat 2. The retaining seat 2 can provide temporary support for the backfilled soil during subsequent backfilling, preventing soil collapse. In addition, sealing the opening 20 by the baffle 61 can effectively prevent soil from falling out of the opening 20.
[0035] When it is necessary to separate the grid seat 2 from the geogrid 1, the lifting plate 3 is lifted upward by rotating the adjusting rod 4. Since the connecting plate 63 is located on the rising path of the lifting plate 3, the lifting plate 3 will drive the baffle 61 to rise synchronously through the connecting plate 63 during the rising process. As the insertion column 30 smoothly exits from the relief groove 10 of the geogrid 1, and the baffle 61 opens the groove 20, the grid seat 2 can be smoothly removed from one side of the geogrid 1.
[0036] like Figure 5 As shown, the system also includes multiple pressing plates 7 for pressing the geogrid 1 onto the roadbed. Two U-shaped fasteners 70 are detachably inserted through the pressing plate 7 and pass through the clearance groove 10 to press the pressing plate 7 downwards onto the roadbed. Multiple insertion rods 71 are also fixedly installed at the bottom of the pressing plate 7, and these rods are inserted downwards into the roadbed. The insertion rods 71 are located on both sides of the fasteners 70 and also press the pressing plate 7 downwards onto the roadbed. The pressing plate 7 further increases the contact area between the fasteners 70 and the roadbed, thereby further improving the fixing effect of the fasteners 70 on the geogrid 1.
[0037] The implementation principle is as follows: by fixing the grid seat 2 on the roadbed, one side of the geogrid 1 is then fixed to the grid seat 2 by the plug post 30. At this time, one side of the geogrid 1 can be fixed and limited, so that it is not easy for the position to shift during the subsequent laying process. This improves the positioning effect of the geogrid 1, reduces the frequency of subsequent position adjustment of the geogrid 1 by the construction personnel, reduces the extra workload when laying the geogrid 1, improves the laying efficiency of the geogrid 1, and ensures the stability of the geogrid 1.
[0038] The retaining seat 2 can provide temporary support for the backfilled soil during subsequent backfilling, preventing soil collapse. In addition, the baffle 61 can effectively prevent soil from falling out of the trench opening 20.
[0039] When it is necessary to separate the grid seat 2 from the geogrid 1, the lifting plate 3 is lifted upward by rotating the adjusting rod 4. Since the connecting plate 63 is located on the rising path of the lifting plate 3, the lifting plate 3 will drive the baffle 61 to rise synchronously through the connecting plate 63 during the rising process. As the insertion column 30 smoothly exits from the relief groove 10 of the geogrid 1, and the baffle 61 opens the groove 20, the grid seat 2 can be smoothly removed from one side of the geogrid 1.
[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A roadbed reinforcement structure for municipal roads, comprising a geogrid (1) for laying on the roadbed surface, wherein the geogrid (1) has clearance grooves (10) arranged in a sequentially spaced manner; characterized in that: It also includes a grid seat (2) for setting on one side of the geogrid (1), and a lifting plate (3) is provided on the side of the grid seat (2) away from the geogrid (1). An adjusting rod (4) with a length along the lifting direction of the lifting plate (3) is threaded onto the grid seat (2). One end of the adjusting rod (4) is rotatably set on the lifting plate (3), and the adjusting rod (4) is used to drive the lifting plate (3) to rise and fall. A slot (20) for the geogrid (1) to pass through is provided on the grid seat (2). A plurality of plug-in posts (30) are arranged in sequence at intervals on the lifting plate (3). The plug-in posts (30) are used to pass through their respective relative clearance slots (10).
2. The roadbed reinforcement structure for municipal roads according to claim 1, characterized in that: The block seat (2) is provided with a plug seat (31) that is one-to-one with the plug post (30), and the plug seat (31) is provided with a plug groove (32) for the corresponding plug post (30) to be inserted into the plug seat (31).
3. The roadbed reinforcement structure for municipal roads according to claim 1, characterized in that: The bottom of the barrier seat (2) is provided with a positioning post (21) for insertion into the roadbed.
4. The roadbed reinforcement structure for municipal roads according to claim 1, characterized in that: The grid seat (2) is rotatably provided with a support frame (5) on the outer side wall away from the geogrid (1), and the bottom of the support frame (5) is used to be erected on the roadbed.
5. The roadbed reinforcement structure for municipal roads according to claim 1, characterized in that: The grid seat (2) is provided with an installation seat (6) on the outer side wall away from the geogrid (1). A lifting rod (60) is slidably provided in the installation seat (6) along the lifting direction of the lifting plate (3). A baffle (61) located outside the installation seat (6) is provided at the end of the lifting rod (60). A return spring (62) is provided in the installation seat (6). The return spring (62) extends and retracts along the sliding direction of the lifting rod (60), and the return spring (62) is used to push the baffle (61) to seal the slot (20).
6. The roadbed reinforcement structure for municipal roads according to claim 5, characterized in that: A connecting plate (63) is provided on the baffle (61), the lifting rod (60) is connected to the connecting plate (63), and the connecting plate (63) is located on the moving path of the lifting plate (3).
7. The roadbed reinforcement structure for municipal roads according to claim 1, characterized in that: It also includes a pressing plate (7) for pressing the geogrid (1) onto the subgrade, and the pressing plate (7) is provided with a fastener (70) for inserting into the subgrade.