Road embankment reinforcement structure

Abstract

This utility model relates to the field of roadbed reinforcement technology, specifically a roadbed reinforcement structure, including the original foundation and the roadbed, as well as a force-transmitting tie plate and several precast retaining walls. The force-transmitting tie plate is placed in the middle of the foundation, and the roadbed is placed on both sides of the force-transmitting tie plate. Precast retaining walls are laid on the slopes of the roadbed on both sides of the force-transmitting tie plate, and several tie bars are provided between the precast retaining walls and the force-transmitting tie plate. This utility model adds tie bars between the force-transmitting tie plate and the precast retaining walls, making the precast retaining walls fit tightly against the roadbed slopes, preventing displacement of the precast retaining walls, and making the roadbed more stable; furthermore, the force-transmitting tie plate and the precast retaining walls compress the roadbed between them, improving the bearing capacity and stability of the roadbed.

Description

Technical Field

[0001] This utility model relates to the field of roadbed reinforcement technology, specifically to roadbed reinforcement structures. Background Technology

[0002] Road structures generally consist of a roadbed and a pavement. The roadbed is further divided into embankments and cuttings, both of which involve slope protection structures. In some sections, the original ground level does not reach the design elevation, requiring layered backfilling and compaction of the original ground, followed by slope trimming to form an embankment. Embankment slopes need protection and reinforcement to prevent rainwater or pavement drainage from eroding the slopes and seeping into the roadbed, reducing the foundation's bearing capacity, causing pavement collapse and roadbed slope instability, severely impacting road conditions and driving safety.

[0003] In existing technologies, slope protection methods such as installing protective nets, planting trees, applying concrete or cement mortar, and spraying grout on slopes have solved the problems of water erosion of roadbed slopes and water infiltration. However, the connection between the slope protection structure and the roadbed slope is not very stable. After long-term crustal movement or vehicle loads, the reinforcement capacity between the roadbed slope and the slope protection structure decreases. This leads to a reduction in the protection and reinforcement capacity of the slope protection structure for the roadbed, thus affecting the roadbed's bearing capacity and stability. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a roadbed reinforcement structure that solves the problem of unstable connection between the current slope protection structure and the roadbed slope.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A roadbed reinforcement structure includes an original foundation and a roadbed, and also includes a force transmission plate and several precast retaining bodies. The force transmission plate is placed in the middle of the foundation, and the roadbed is placed on both sides of the force transmission plate. Precast retaining bodies are laid on the slopes of the roadbed on both sides of the force transmission plate, and several tie bars are provided between the precast retaining bodies and the force transmission plate.

[0007] Compared with the prior art, the beneficial effects of this utility model are:

[0008] As a preferred embodiment, a further technical solution of this utility model is:

[0009] Preferably, steps are set on the slopes of the roadbed on both sides of the force transmission plate, and precast retaining bodies are laid on the steps.

[0010] Preferably, the precast retaining body includes a connecting panel and a retaining box. One end of the connecting panel is connected to the bottom of one vertical side wall of the retaining box, the other vertical side wall of the retaining box abuts against the vertical surface of the step, the bottom of the connecting panel abuts against the horizontal surface of the step, one end of the tie rod is connected to the force transmission plate, and the other end is connected to the retaining box.

[0011] Preferably, the connecting panel has several vertical holes 1, and the top and bottom walls of the retaining box have vertical holes 2 respectively, with the two vertical holes being set vertically and vertically; an anchor rod passes through the interior of the vertical hole 2.

[0012] Preferably, horizontal holes are opened on the two vertical side walls of the retaining box, one on the left and one on the right respectively. One end of the tie rod is provided with a threaded structure. The threaded end of the tie rod passes through the two horizontal holes in sequence and is locked by a fixing nut.

[0013] Preferably, a vertical guide pipe is installed inside the retaining box between the top and bottom walls, and the vertical guide pipe is positioned between two vertical holes. After the lower end of the anchor rod passes through the vertical hole in the top wall of the retaining box, it exits through the vertical guide pipe from the vertical hole in the bottom wall of the retaining box. Therefore, the vertical guide pipe allows the lower end of the anchor rod to pass through the vertical holes in the top and bottom walls of the retaining box, preventing the bottom wall of the retaining box from blocking the lower end of the anchor rod from passing through.

[0014] Preferably, a horizontal guide tube is installed inside the retaining box between the two vertical side walls, and the horizontal guide tube is positioned between two horizontal holes on the left and right sides. After the outer end of the tie rod passes through the horizontal hole in the inner side wall of the retaining box, it exits through the horizontal hole in the outer side wall of the retaining box via the horizontal guide tube. Therefore, the horizontal guide tube facilitates the outer end of the tie rod to pass through the horizontal holes in both the inner and outer side walls of the retaining box, preventing the outer side wall of the retaining box from blocking the outer end of the tie rod from passing through.

[0015] Preferably, the bottom of the force transmission plate is provided with a large foot, which is embedded in the original foundation. The large foot can increase the stability of the force transmission plate and also distribute the load transmitted by the force transmission plate, so that the force transmission plate is evenly stressed. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the roadbed reinforcement structure described in this utility model;

[0017] Figure 2 for Figure 1 Enlarged view of point A in the image;

[0018] Figure 3 This is a schematic diagram of the precast retaining body in the roadbed reinforcement structure described in this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the retaining box in the roadbed reinforcement structure described in this utility model;

[0020] In the diagram: 1. Original foundation; 2. Roadbed; 21. Step; 3. Force transmission tie plate; 31. Large footing; 4. Precast retaining wall; 41. Connecting panel; 411. Vertical hole one; 42. Retaining box; 421. Vertical hole two; 422. Horizontal hole; 43. Side plate; 44. Vertical guide pipe; 45. Horizontal guide pipe; 5. Tie bar; 6. Fixing nut; 7. Anchor bolt; 71. Clamping plate. Detailed Implementation

[0021] The present invention will be further described below with reference to specific embodiments. The purpose of this description is only to better understand the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0022] like Figures 1 to 4 As shown, a roadbed reinforcement structure consists of an original foundation 1, a roadbed 2, a load-transfer plate 3, and several precast retaining bodies 4. The load-transfer plate 3 is placed in the middle of the original foundation 1, and a large foot 31 is provided at the bottom of the load-transfer plate 3. The large foot 31 is buried in the original foundation 1. The large foot 31 can increase the contact area between the load-transfer plate 3 and the original foundation 1, improve the stability of the load-transfer plate 3, and also disperse the load transmitted by the load-transfer plate 3, so that the stress is uniform.

[0023] Roadbed 2 is provided on both sides of the force transmission plate 3. Precast retaining bodies 4 are laid on the slopes of the roadbed 2 on both sides. The precast retaining bodies 4 are connected to the force transmission plate 3 by several tie bars 5. The specific structure is as follows: steps 21 are provided on the slopes of the roadbed 2 on both sides of the force transmission plate 3. The precast retaining bodies 4 are laid on the steps 21.

[0024] The precast retaining body 4 consists of a connecting panel 41 and a retaining box 42. One end of the connecting panel 41 is fixedly connected to the bottom of one vertical side wall of the retaining box 42. The other vertical side wall of the retaining box 42 (the vertical side wall of the retaining box 42 away from the connecting panel 41) abuts against the vertical surface of the step 21. The bottom of the connecting panel 41 abuts against the horizontal surface of the step 21. One end of the tie rod 5 is connected to the force transmission plate 3, and the other end is connected to the retaining box 42.

[0025] Two side plates 43 are symmetrically arranged at the front and rear ends of the precast retaining body 4. Each side plate 43 is placed between the connecting plate and the retaining box 42 and is fixedly connected to both. The side plates 43 can increase the strength of the precast retaining body 4 and improve the stability of the connecting panel 41 and the retaining box 42.

[0026] The connecting panel 41 has several vertical holes 411, and the top and bottom walls of the retaining box 42 also have vertical holes 421, which are positioned vertically to each other. The upper connecting panel 41 is close to the outer edge and abuts against the top wall of the lower retaining box 42. The axis of the hole of the first vertical hole 411 coincides with the axis of the hole of the second vertical hole 421.

[0027] In this embodiment, the retaining box 42 is also provided with an anchor rod 7. The upper end of the anchor rod 7 is provided with a retaining plate 71. The lower end of the anchor rod 7 passes through two vertical holes 421 from top to bottom and extends to the outside of the retaining box 42. The retaining plate 71 is used to limit the anchor rod 7 so that its upper end can be kept on the connecting panel 41 and will not shift.

[0028] When the precast retaining body 4 is laid, the anchor rods 7 can be designed to be of different lengths according to different locations. The bottom anchor rod 7 passes through the vertical hole 411 of the bottom connecting panel 41 and is anchored into the original foundation 1. The clamping plate 71 abuts against the upper surface of the bottom connecting panel 41.

[0029] The second layer anchor rod 7 passes through the vertical hole 411 of the second layer panel, the vertical hole 421 of the top wall of the bottom retaining box 42, and the vertical hole 421 of the bottom wall of the bottom retaining box 42 in sequence and is anchored into the original foundation 1. The clamping plate 71 abuts against the upper surface of the second layer connecting panel 41.

[0030] The third layer anchor rod 7 passes through the vertical hole 411 of the third layer connecting panel 41, the vertical hole 421 of the top wall of the second layer retaining box 42, and the vertical hole 421 of the bottom wall of the second layer retaining box 42 in sequence, and is then anchored into the step 21. The clamping plate 71 abuts against the upper surface of the third layer connecting panel 41.

[0031] The fixing method of the precast retaining body 4 and the step 21 from the third layer to the second-to-top layer is the same as that of the third layer, and will not be repeated here.

[0032] The topmost anchor rod 7 passes through the second vertical hole 421 on the top wall and the second vertical hole 421 on the bottom wall of the retaining box 42 in sequence and is then anchored into the step 21, fixing the topmost retaining box 42 to the step 21.

[0033] Several horizontal holes 422 are respectively opened on the two vertical side walls of the retaining box 42. The horizontal holes 422 on the two vertical side walls are set one-to-one. The end of the tie rod 5 connected to the retaining box 42 is provided with a threaded structure on its outer surface. The threaded end of the tie rod 5 passes through the two horizontal holes 422 in sequence and is locked by the fixing nut 6.

[0034] Vertical pipes are installed in the vertical holes 421 corresponding to the top and bottom walls of the retaining box 42, connecting the two vertical holes 421. After the lower end of the anchor rod 7 passes through the vertical hole 421 in the top wall of the retaining box 42, it exits through the vertical pipe 44 in the vertical hole 421 in the bottom wall of the retaining box 42. Therefore, the vertical pipe 44 facilitates the lower end of the anchor rod 7 to pass through the vertical holes 421 in the top and bottom walls of the retaining box 42, preventing the bottom wall of the retaining box 42 from blocking the lower end of the anchor rod 7 from passing through.

[0035] The inner and outer walls of the retaining box 42 are respectively provided with horizontal guide pipes 45 corresponding to each group of horizontal holes 422, and the horizontal guide pipes 45 are placed between two corresponding horizontal holes 422 on the left and right.

[0036] After the outer end of the tie rod 5 passes through the horizontal hole 422 in the inner wall of the retaining box 42, it passes through the horizontal conduit 45 out through the horizontal hole 422 in the outer wall of the retaining box 42. Therefore, the horizontal conduit 45 can facilitate the outer end of the tie rod 5 to pass through the horizontal hole 422 in the inner wall and the horizontal hole 422 in the outer wall of the retaining box 42, and prevent the outer wall of the retaining box 42 from blocking the outer end of the tie rod 5 from passing through.

[0037] When prefabricating or casting the force transmission plate 3, multiple rows of mechanical connecting sleeves with internal threads can be pre-embedded on the left and right sides of the force transmission plate 3. The outer surface of the end of the tie rod 5 that is connected to the force transmission plate 3 is provided with a threaded structure, and the end of the tie rod 5 is threaded to the mechanical connecting sleeve through the threaded structure, thus completing the connection between the tie rod 5 and the force transmission plate 3.

[0038] When this structure is applied, the large foot 31 at the lower end of the force transmission plate 3 is first buried in the original foundation 1, then the first layer of roadbed 2 is filled and compacted, and then the first layer of tie bars 5 is installed; then the second layer of roadbed 2 is filled and compacted, and then the second row of tie bars 5 is installed. After that, the filling and compaction of roadbed 2 and the installation of tie bars 5 are carried out alternately until the upper surface of roadbed 2 is flush with the upper edge of the force transmission plate 3. After the roadbed 2 is completed;

[0039] Step 21 is excavated on the slope of roadbed 2, exposing the ends of tie rods 5. Then, precast retaining bodies 4 are placed. During the placement of precast retaining bodies 4, the ends of tie rods 5 pass through the horizontal holes 422, horizontal guide pipes 45, and horizontal holes 422 on the outer side wall of retaining box 42 in sequence through the inner vertical side wall (the side closest to step 21). After the precast retaining bodies 4 are placed, fixing nuts 6 are screwed onto the outer ends of tie rods 5, and the fixing nuts 6 abut against the outer side wall of retaining box 42. Then, anchor rods 7 are driven into the vertical holes 411 of the bottom connecting panel 41 and anchored into the original foundation 1. Subsequently, anchor rods 7 are driven into the vertical holes 411 of the second connecting panel 41 in sequence through the vertical holes 411 of the second connecting panel 41 and the vertical holes 421 on the top wall of the bottom retaining box 42. The anchor rod 7 is driven into the vertical hole 421 on the bottom wall of the bottom retaining box 42 and anchored into the original foundation 1. Then, the anchor rod 7 is driven into the vertical hole 411 on the third connecting panel 41. The anchor rod 7 passes through the vertical hole 411 on the third connecting panel 41, the vertical hole 421 on the top wall of the second retaining box 42 and the vertical hole 421 on the bottom wall of the second retaining box 42 in sequence, and is anchored into the step 21. The fixing method of the precast retaining body 4 from the third layer to the second top layer to the step 21 is the same as that of the precast retaining body 4 on the third layer, and will not be described again here. Finally, the anchor rod 7 is driven into the vertical hole 421 on the top wall and the vertical hole 421 on the bottom wall of the top retaining box 42 and anchored into the step 21 to fix the top retaining box 42 to the step 21. This completes the installation of the roadbed 2 fixing structure.

[0040] Tie bars can increase the shear and tensile strength of the roadbed, making it more stable. At the same time, tie bars can connect the precast retaining wall and the load-bearing plate, so that the precast retaining wall is close to the slope of the roadbed, preventing relative displacement between the precast retaining wall and the slope of the roadbed. In addition, in conjunction with steps, it can prevent the precast retaining wall from sliding along the slope, increasing its stability. The load-bearing plate and the precast retaining wall can squeeze the roadbed between them, thereby improving the bearing capacity and stability of the roadbed. Anchor bolts can further increase the connection stability between the precast retaining wall and the roadbed slope.

[0041] The above description is merely a preferred embodiment of the present utility model and does not limit the scope of the present utility model. All equivalent changes made based on the content of the present utility model specification and its drawings are included within the scope of the present utility model.

Claims

1. A roadbed reinforcement structure, comprising an original foundation and a roadbed, characterized in that: It also includes a force transmission tie plate and several precast retaining walls. The force transmission tie plate is placed in the middle of the foundation, and the roadbed is placed on both sides of the force transmission tie plate. Precast retaining walls are laid on the slopes of the roadbed on both sides of the force transmission plate. Several tie bars are set between the precast retaining walls and the force transmission tie plate.

2. The roadbed reinforcement structure according to claim 1, characterized in that: Steps are set on the slopes of the roadbed on both sides of the force transmission plate, and precast retaining bodies are laid on the steps.

3. The roadbed reinforcement structure according to claim 2, characterized in that: The precast retaining structure includes a connecting panel and a retaining box. One end of the connecting panel is connected to the bottom of one vertical side wall of the retaining box, and the other vertical side wall of the retaining box abuts against the vertical surface of the step. The bottom of the connecting panel abuts against the horizontal surface of the step. One end of the tie rod is connected to the force transmission plate, and the other end is connected to the retaining box.

4. The roadbed reinforcement structure according to claim 3, characterized in that: The connecting panel has several vertical holes (1), and the top and bottom walls of the retaining box have vertical holes (2), with the two vertical holes being set vertically and vertically respectively; anchor rods pass through the interior of the vertical holes (2).

5. The roadbed reinforcement structure according to claim 3, characterized in that: Horizontal holes are opened on the left and right sides of the two vertical side walls of the retaining box, and one end of the tie rod is provided with a threaded structure. The threaded end of the tie rod passes through the two horizontal holes in sequence and is locked by a fixing nut.

6. The roadbed reinforcement structure according to claim 4, characterized in that: The interior of the retaining box has a vertical guide pipe installed between the top and bottom walls, and the vertical guide pipe is placed between two vertical holes.

7. The roadbed reinforcement structure according to claim 5, characterized in that: The interior of the retaining box has a horizontal guide pipe installed between the two vertical side walls, and the horizontal guide pipe is placed between two horizontal holes on the left and right.

8. The roadbed reinforcement structure according to claim 1, characterized in that: The bottom of the force transmission plate is equipped with a large foot, which is embedded in the original foundation.

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