Roadbed slope reinforcing device
By setting up retaining walls, threaded anchors, and grid structures on the slope, combined with jack tensioning and reverse slope design, the limitations of traditional slope reinforcement methods in resisting sliding forces and deformation are solved, thereby improving the stability and stiffness of the slope, preventing landslides and overturning, and ensuring the safety of the roadbed.
Patent Information
- Application Number
- CN202522624136.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-11
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-12-11
AI Technical Summary
Traditional slope reinforcement methods mainly rely on self-weight or passive resistance, which cannot effectively control slope deformation. Especially under factors such as gravity, rainwater infiltration, weathering forces and seismic activity, slopes are prone to landslides, mudslides and deep instability, affecting the integrity of the roadbed structure and driving safety.
The retaining wall body, threaded anchors, vertical ribs and horizontal ribs are composed of a grid structure. The threaded anchors are bonded to the soil and rock mass, and the continuous positive pressure is formed by the tensioning of jacks to enhance the stiffness of the slope. The reverse slope, wall toe and self-weight wall are used to increase the sliding surface and the overturning resistance, forming a wedge-shaped base surface to resist the landslide thrust.
It effectively suppresses slope deformation, improves overall integrity and rigidity, prevents landslides at the bottom of the slope and the overturning of retaining walls, enhances slope stability, reduces the risk of structural deformation, and ensures driving safety.
Smart Images
Figure CN223824223U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of slope reinforcement technology, and in particular to a roadbed slope reinforcement device. Background Technology
[0002] In the construction and operation of transportation infrastructure such as roads and railways, the long-term stability and safety of roadbed slopes is a crucial and widespread issue. Especially in mountainous, hilly areas or regions with complex geological conditions, roadbed slopes are highly susceptible to surface soil collapse, shallow landslides, and even deep instability under the influence of natural factors such as gravity, rainwater infiltration, weathering forces, and even seismic activity. These problems not only directly threaten the structural integrity of the roadbed and affect driving safety, but in severe cases can even lead to traffic disruptions, causing significant economic losses and safety accidents.
[0003] Traditional slope reinforcement methods, while widely used, mainly rely on self-weight or passive resistance to maintain stability, which has limitations in resisting large sliding forces and cannot effectively control slope deformation. In view of this, this application proposes a roadbed slope reinforcement device based on the above-mentioned technical problems. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a roadbed slope reinforcement device.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A roadbed slope reinforcement device includes a retaining wall body, wherein the retaining wall body has a plurality of holes, all of which extend downward at an incline to the landslide layer, and threaded anchor rods are inserted into the holes, and a layer of cement slurry is poured between the threaded anchor rods and the holes.
[0007] The retaining wall body has vertical ribs on one side, and horizontal ribs are installed through the vertical ribs. The vertical and horizontal ribs are intersected to form a grid structure and cover the outside of the threaded anchor rod. The vertical and horizontal ribs are made of concrete. A pad is fixedly installed on the outer surface of the horizontal rib. The pad is sleeved on the outside of the threaded anchor rod. An anchor is fixedly installed on one side of the pad. A jack is fixedly installed on one side of the anchor. The output end of the jack is fixedly connected to the threaded anchor rod. A nut is threadedly connected to the outside of the threaded anchor rod.
[0008] Furthermore, a protective cover is fixedly installed at the anchor head of the threaded anchor rod.
[0009] Furthermore, the longitudinal section of the transverse rib is an isosceles trapezoid, and the angle of the inclined plane of the transverse rib is consistent with the inclination angle of the hole.
[0010] Furthermore, the cross-section of the vertical rib is an isosceles trapezoid.
[0011] Furthermore, a reinforcing connecting layer is cast at both the upper and lower ends of the vertical rib.
[0012] Furthermore, the retaining wall body includes a main bearing wall, which is located at the junction of the landslide layer and the road layer. The bottom of the main bearing wall is cast with a reverse slope, which is embedded in the road layer. The longitudinal section of the reverse slope is a right trapezoid with its inclined surface pointing downwards towards the landslide layer.
[0013] Furthermore, a wall toe is poured on the side of the reverse slope near the road layer.
[0014] Furthermore, a self-weight wall is cast on the side of the main load-bearing wall closest to the landslide.
[0015] Furthermore, the bottom surfaces formed by the wall toe and the self-weight wall are both located in the same inclined plane as the bottom surface of the reverse slope.
[0016] The beneficial effects of this utility model are as follows:
[0017] 1. This utility model, by setting up a retaining wall body, horizontal ribs, vertical ribs, threaded anchors, and anchorages, firstly, drills a series of holes deep into the landslide layer on the retaining wall body built at the junction of the landslide layer and the road layer using a drilling rig. Then, threaded anchors are inserted into these holes and cement grout is poured in, so that the threaded anchors are firmly bonded to the surrounding rock and soil, forming a deep anchoring foundation. Then, vertical and horizontal ribs are poured on the outside of the threaded anchors. After the concrete material of the vertical and horizontal ribs reaches a certain strength, pads, anchorages, and jacks are installed. The threaded anchors are tensioned to the design load using jacks, and the anchorages are locked with nuts. This tension force is effectively locked through the pads and anchorages, thus converting into a continuous positive pressure on the landslide body. This generates significant frictional resistance on the potential sliding surface of the landslide, actively offsetting part of the sliding force and pre-compressing the rock and soil, greatly improving the integrity and rigidity of the slope, thereby effectively suppressing slope deformation.
[0018] 2. This utility model, by setting up a reverse slope, a wall toe, and a self-weight wall, increases the sliding surface of the retaining wall body, making the bond between the main load-bearing wall and the road layer tighter and effectively preventing the bottom of the slope from sliding due to natural factors. The wall toe on the front side of the reverse slope increases the overturning radius of the retaining wall body, further enhancing the overturning resistance of the retaining wall body and effectively avoiding the risk of overturning of the retaining wall body due to external forces. At the same time, the widened design of the self-weight wall balances the pressure of the landslide layer soil through its own weight, further enhancing the stability of the retaining wall body and reducing the risk of structural deformation caused by uneven soil pressure. Attached Figure Description
[0019] Figure 1This is a schematic diagram of the installation of a threaded anchor rod for a roadbed slope reinforcement device proposed in this utility model;
[0020] Figure 2 This is a schematic diagram of the protective cover of a roadbed slope reinforcement device proposed in this utility model;
[0021] Figure 3 This is a schematic diagram of the retaining wall body of a roadbed slope reinforcement device proposed in this utility model;
[0022] Figure 4 This is a schematic diagram of an anchor for a roadbed slope reinforcement device proposed in this utility model;
[0023] Figure 5 This is a schematic diagram of the wall toe of a roadbed slope reinforcement device proposed in this utility model;
[0024] Figure 6 This is a schematic diagram of the reinforcement connection layer of a roadbed slope reinforcement device proposed in this utility model.
[0025] In the diagram: 1. Retaining wall body; 2. Hole; 3. Threaded anchor; 4. Cement grout layer; 5. Vertical rib; 6. Horizontal rib; 7. Pad; 8. Anchor; 9. Jack; 10. Nut; 11. Protective cover; 12. Reinforced connection layer; 13. Main load-bearing wall; 14. Reverse slope; 15. Wall toe; 16. Self-weight wall. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0027] Reference Figure 1-4 A roadbed slope reinforcement device includes a retaining wall body 1, wherein the retaining wall body 1 has a plurality of holes 2, wherein the plurality of holes 2 extend downward at an incline to the landslide layer, wherein threaded anchor rods 3 are inserted in the holes 2, and a cement slurry layer 4 is poured between the threaded anchor rods 3 and the holes 2.
[0028] A vertical rib 5 is provided on one side of the retaining wall body 1, and a horizontal rib 6 is provided through the vertical rib 5. The vertical rib 5 and the horizontal rib 6 are intersected to form a grid structure and cover the outside of the threaded anchor rod 3. Both the vertical rib 5 and the horizontal rib 6 are made of concrete. A pad 7 is fixedly installed on the outer surface of the horizontal rib 6. The pad 7 is sleeved on the outside of the threaded anchor rod 3. An anchor 8 is fixedly installed on one side of the pad 7. A jack 9 is fixedly installed on one side of the anchor 8. The output end of the jack 9 is fixedly connected to the threaded anchor rod 3. A nut 10 is threadedly connected to the outside of the threaded anchor rod 3.
[0029] First, on the retaining wall body 1 built at the junction of the landslide layer and the road layer, a series of holes 2 are drilled downwards at an angle to penetrate into the landslide layer using a drilling rig. Then, threaded anchor rods 3 are inserted into them and cement grout 4 is poured in to firmly bond the threaded anchor rods 3 with the surrounding rock and soil, forming a deep anchoring foundation. Then, vertical ribs 5 and horizontal ribs 6 are poured on the outside of the threaded anchor rods 3. After the concrete material of the vertical ribs 5 and horizontal ribs 6 reaches a certain strength, pads 7, anchors 8, and jacks 9 are installed. The threaded anchor rods 3 are tensioned to the design load by jacks 9, and the anchors 8 are locked with nuts 10. This tension force is effectively locked by pads 7 and anchors 8, thereby converting into a continuous positive pressure on the landslide body. Significant frictional resistance is generated on the potential sliding surface of the landslide, which actively offsets part of the sliding force and pre-compresses the rock and soil, greatly improving the integrity and rigidity of the slope, thus effectively suppressing slope deformation.
[0030] The crisscrossing vertical ribs 5 and horizontal ribs 6 form a rigid grid skeleton. When the prestress is transmitted through the pad 7, it is first effectively dispersed and supported by this grid structure, avoiding stress concentration and damage to the local wall.
[0031] Reference Figure 1-2 Specifically: a protective cover 11 is fixedly installed at the anchor head of the threaded anchor rod 3. After the anchor 8 is locked, the jack 9 is removed, the excess threaded anchor rod 3 is cut off, and finally the protective cover 11 is used to protect the anchor head of the excess exposed threaded anchor rod 3.
[0032] Reference Figure 3-4 Specifically: the longitudinal section of the transverse rib 6 is an isosceles trapezoid and the angle of the inclined surface of the transverse rib 6 is consistent with the inclination angle of the hole 2. The inclined surface design of the transverse rib 6 makes it fit with the inclined hole 2 and the threaded anchor rod 3, ensuring a smooth force path and facilitating the installation of the pad 7.
[0033] Reference Figure 6 Specifically: the cross-section of the vertical rib 5 is an isosceles trapezoid.
[0034] Reference Figure 2 Specifically, the vertical rib 5 has a reinforcing connecting layer 12 cast at both its upper and lower ends.
[0035] Reference Figure 1 , Figure 5 Specifically: the retaining wall body 1 includes a main bearing wall 13, which is located at the junction of the landslide layer and the road layer. A reverse slope 14 is poured at the bottom of the main bearing wall 13. The reverse slope 14 is embedded in the road layer. The longitudinal section of the reverse slope 14 is a right trapezoid with the slope pointing downwards towards the landslide layer.
[0036] By pouring a reverse slope 14 embedded in the road layer at the bottom of the main bearing wall 13, the sliding surface of the retaining wall body 1 is increased, making the bond between the main bearing wall 13 and the road layer tighter and effectively preventing the bottom of the slope from sliding due to natural factors.
[0037] Reference Figure 5 Specifically: the reverse slope 14 is reinforced with a wall toe 15 on the side near the road layer, which increases the overturning radius of the retaining wall body 1, further enhances the overturning resistance of the retaining wall body 1, and effectively avoids the risk of overturning of the retaining wall body 1 due to external forces.
[0038] Reference Figure 5 Specifically: The main load-bearing wall 13 is reinforced with a self-weight wall 16 on the side near the landslide. The widened design of the self-weight wall 16 balances the pressure of the landslide soil layer by its own weight, further enhancing the stability of the retaining wall body 1 and reducing the risk of structural deformation caused by uneven soil pressure.
[0039] Reference Figure 5 Specifically: the bottom surfaces formed by the wall toe 15 and the self-weight wall 16 are both located in the same inclined plane as the bottom surface of the reverse slope 14, forming an inclined base surface that counteracts the downward trend of the landslide layer. In particular, the reverse slope 14 embedded in the road layer has a right-angled trapezoidal slope that points directly to the landslide layer. When subjected to landslide thrust, this wedge-shaped structure can utilize the reaction force of the foundation below to generate greater anti-slide resistance.
[0040] Working principle: First, a series of holes 2 are drilled downwards into the landslide layer using a drilling rig on the retaining wall body 1, which is located at the junction of the landslide layer and the road layer. Then, threaded anchor rods 3 are inserted into the holes and cement grout 4 is injected to firmly bond the threaded anchor rods 3 with the surrounding soil and rock, forming a deep anchoring foundation. Then, vertical ribs 5 and horizontal ribs 6 are poured on the outside of the threaded anchor rods 3. After the concrete material of the vertical ribs 5 and horizontal ribs 6 reaches a certain strength, the pad 7, anchor 8, and jack 9 are installed. The threaded anchor rods 3 are tensioned to the design load by the jack 9, and the anchor 8 is locked with nuts 10. This tension force is effectively locked by the pad 7 and the anchor 8, thus converting into a continuous positive pressure on the landslide body. Significant frictional resistance is generated on the potential sliding surface of the landslide, which actively offsets part of the sliding force and pre-compresses the soil and rock, greatly improving the integrity and rigidity of the slope, thereby effectively suppressing slope deformation.
[0041] After the anchor 8 is locked, the jack 9 is removed, the excess threaded anchor rod 3 is cut off, and finally the anchor head of the excess exposed threaded anchor rod 3 is protected with the protective cover 11.
[0042] In addition, the crisscrossing vertical ribs 5 and horizontal ribs 6 form a rigid grid skeleton. When the prestress is transmitted through the pad 7, it is first effectively dispersed and borne by this grid structure, avoiding stress concentration and damage to the local wall. Furthermore, the inclined design of the horizontal ribs 6 makes them fit perfectly with the inclined holes 2 and threaded anchor rods 3, ensuring a smooth force path and facilitating the installation of the pad 7.
[0043] By pouring a reverse slope 14 embedded in the road layer at the bottom of the main bearing wall 13, the sliding surface of the retaining wall body 1 is increased, making the bond between the main bearing wall 13 and the road layer tighter and effectively preventing the bottom of the slope from sliding due to natural factors.
[0044] The wall toe 15 on the front side of the reverse slope 14 increases the overturning radius of the retaining wall body 1, further enhancing the overturning resistance of the retaining wall body 1 and effectively avoiding the risk of overturning of the retaining wall body 1 due to external forces.
[0045] Meanwhile, the widened design of the self-weight wall 16 balances the pressure of the landslide soil through its own weight, further enhancing the stability of the retaining wall body 1 and reducing the risk of structural deformation caused by uneven soil pressure.
[0046] The bottom surface formed by the wall toe 15 and the self-weight wall 16 is flush with the bottom surface of the reverse slope 14, forming an inclined base surface that can resist landslides. In particular, the reverse slope 14 embedded in the road layer has a right-angled trapezoidal slope that points directly to the landslide layer. When subjected to landslide thrust, this wedge-shaped structure can utilize the reaction force of the foundation below to generate greater anti-slide resistance.
[0047] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
[0048] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
Claims
1. A roadbed slope reinforcement device, characterized in that, The retaining wall body (1) includes a number of holes (2), which extend downwards to the landslide layer. Threaded anchor rods (3) are inserted into the holes (2), and a cement slurry layer (4) is poured between the threaded anchor rods (3) and the holes (2). The retaining wall body (1) has a vertical rib (5) on one side, and a horizontal rib (6) is provided through the vertical rib (5). The vertical rib (5) and the horizontal rib (6) are intersected to form a grid structure and cover the outside of the threaded anchor rod (3). The vertical rib (5) and the horizontal rib (6) are both made of concrete. A pad (7) is fixedly installed on the outer surface of the horizontal rib (6). The pad (7) is sleeved on the outside of the threaded anchor rod (3). An anchor (8) is fixedly installed on one side of the pad (7). A jack (9) is fixedly installed on one side of the anchor (8). The output end of the jack (9) is fixedly connected to the threaded anchor rod (3). A nut (10) is threadedly connected to the outside of the threaded anchor rod (3).
2. The roadbed slope reinforcement device according to claim 1, characterized in that, A protective cover (11) is fixedly installed at the anchor head of the threaded anchor rod (3).
3. The roadbed slope reinforcement device according to claim 1, characterized in that, The longitudinal section of the transverse rib (6) is an isosceles trapezoid and the angle of the inclined plane of the transverse rib (6) is consistent with the inclination angle of the hole (2).
4. The roadbed slope reinforcement device according to claim 1, characterized in that, The cross-section of the vertical rib (5) is an isosceles trapezoid.
5. A roadbed slope reinforcement device according to claim 1, characterized in that, The vertical rib (5) has a reinforcing connecting layer (12) cast at both the upper and lower ends.
6. A roadbed slope reinforcement device according to claim 1, characterized in that, The retaining wall body (1) includes a main bearing wall (13), which is located at the junction of the landslide layer and the road layer. A reverse slope (14) is poured at the bottom of the main bearing wall (13), which is embedded in the road layer. The longitudinal section of the reverse slope (14) is a right trapezoid with its slope pointing downwards towards the landslide layer.
7. A roadbed slope reinforcement device according to claim 6, characterized in that, The reverse slope (14) has a wall toe (15) poured on the side near the road layer.
8. A roadbed slope reinforcement device according to claim 7, characterized in that, The main load-bearing wall (13) has a self-weight wall (16) cast on the side near the landslide.
9. A roadbed slope reinforcement device according to claim 8, characterized in that, The bottom surfaces formed by the wall toe (15) and the self-weight wall (16) are both located in the same inclined plane as the bottom surface of the reverse slope (14).