Retaining wall for high-fill highway subgrade
By using a quincunx arrangement of front and rear anti-slide piles and prestressed anchor cables to connect them in the roadbed of a high embankment highway, a one-to-two tension structure is formed, which solves the problem that existing retaining walls cannot support high embankment roadbeds, and achieves stable support of the roadbed and reduces the risk of landslides.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-04-10
AI Technical Summary
The existing retaining walls cannot meet the support requirements of high embankment highway subgrades, resulting in soil instability and increased risk of landslides.
The anti-slide piles are arranged in a quincunx pattern with front and rear rows. The front row of anti-slide piles are connected to the rear row of anti-slide piles by prestressed anchor cables to form a one-to-two tension structure, which enhances the anchoring effect of the cantilever piles. The connection of the piles is strengthened by the front and rear beams.
It provides stable support for the subgrade of high embankment highways, enhances the anchoring effect of cantilever piles, and reduces the risk of soil landslides.
Smart Images
Figure CN224106463U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of geotechnical engineering, especially relates to a retaining wall for high fill roadbed. BACKGROUND
[0002] High fill roadbed refers to the embankment with soil filling material and filling height exceeding 18m. Retaining wall is an important supporting structure in geotechnical engineering, which mainly functions to maintain soil stability by resisting lateral earth pressure and prevent soil landslide or deformation. Retaining wall is often used to support high fill roadbed. Retaining wall mainly includes: 1. gravity retaining wall, which relies on self-weight to balance earth pressure; 2. anchor retaining wall, which anchors rock layer through prestressed anchor; 3. buttress retaining wall, which combines wall toe plate and buttress to enhance rigidity; 4. anchor plate retaining wall, which utilizes anchor plate and pull rod to work together; 5. pile plate retaining wall, which forms composite structure by combining anti-slide pile and retaining plate. However, these retaining walls do not meet the supporting requirements of high fill roadbed. SUMMARY
[0003] Therefore, the utility model aims to provide a retaining wall for high fill roadbed to solve the technical problem that the existing retaining wall does not meet the supporting requirements of high fill roadbed.
[0004] The utility model aims to realize the following technical scheme:
[0005] A retaining wall for high fill roadbed, which comprises front row anti-slide piles and rear row anti-slide piles, the pile bodies of the front row anti-slide piles and the rear row anti-slide piles are arranged in a plum blossom shape, the lower ends of the front row anti-slide piles and the rear row anti-slide piles are anchored in stable rock-soil body, the top surface of the front row anti-slide piles is higher than that of the rear row anti-slide piles and is at least flush with the road surface, the rear side of the front row anti-slide piles is in contact with the supported soil body, the rear row anti-slide piles are located in the supported soil body, retaining plates are arranged between the adjacent two pile bodies of the front row anti-slide piles, and the middle part of the pile body of the front row anti-slide piles and the upper ends of the pile bodies of the rear row anti-slide piles on both sides thereof are connected by prestressed anchor cables.
[0006] Further, the prestressed anchor cable comprises steel strands with prestress and anchor members at both ends of the steel strands.
[0007] Further, the corners of the pile bodies of the front row anti-slide piles and the rear row anti-slide piles are chamfered at equal distances to form anchor surfaces, the front ends of the steel strands are located on the diagonal lines of the pile bodies of the front row anti-slide piles, the anchor members at the front ends of the steel strands are located on the anchor surfaces, the rear ends of the steel strands are located on the diagonal lines of the pile bodies of the rear row anti-slide piles, the anchor members at the rear ends of the steel strands are located on the anchor surfaces, and the two steel strands on each pile body are staggered vertically.
[0008] Further, the front end anchor of the steel strand is a pier head clamp, and the rear end anchor of the steel strand is a pier head anchor.
[0009] Still further, the adjacent two pile bodies of the front row of anti-slide piles are connected through front beams.
[0010] Still further, the adjacent two pile bodies of the rear row of anti-slide piles are connected through rear beams.
[0011] The utility model discloses beneficial effect is:
[0012] The utility model discloses a retaining wall for high fill highway subgrade, relies on the support of each pile body of front row of anti - slide pile to soil body, although each pile body of front row of anti - slide pile is anchored in stable rock - soil body with cantilevered upper end, therefore through setting up rear row of anti - slide pile, makes the middle part of the pile body of front row of anti - slide pile be connected with the upper end of the pile body of rear row of anti - slide pile of its both sides through prestressed anchor cable, makes the cantilevered section of the pile body of front row of anti - slide pile be pulled by the cantilevered section of the pile body of rear row of anti - slide pile of its both sides, and this pair of two pulling mode makes the cantilevered section of the pile body of front row of anti - slide pile be subjected to the anchoring effect of two points, two directions powerful, makes front row of anti - slide pile can stably support the subgrade of higher filling height.
[0013] The both ends of the steel strand of prestressed anchor cable are on the diagonal lines of the pile body of front row of anti - slide pile and the pile body of rear row of anti - slide pile respectively, and the anchoring effect is stronger.
[0014] The other advantages, objects and features of the utility model will be set forth in the subsequent description to some extent, and to some extent, will be obvious to those skilled in the art based on the study of the following text or can be taught from the practice of the utility model. The objects and other advantages of the utility model can be realized and obtained through the following description. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to make the purpose, technical scheme and advantage of the utility model more clear, the utility model will be further described in detail below with the drawings, wherein:
[0016] Figure 1 It is the perspective view of the utility model.
[0017] Figure 2 It is the perspective view of the utility model without the retaining board.
[0018] Figure 3 It is the plan view of the utility model.
[0019] Figure 4 It is the right view of the utility model.
[0020] Figure 5 It is the right view of the utility model in the using state.
[0021] In the diagram: 1. Front row anti-slide piles; 2. Rear row anti-slide piles; 3. Pile body; 4. Stable rock and soil; 5. Road surface; 6. Soil; 7. Front beam; 8. Rear beam; 9. Retaining plate; 10. Anchor cable; 11. Anchoring surface. Detailed Implementation
[0022] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.
[0023] like Figures 1-5 The retaining wall shown is used for the subgrade of a high embankment highway. It includes a front row of anti-slide piles 1 and a rear row of anti-slide piles 2. The front row of anti-slide piles 1 and the rear row of anti-slide piles 2 are each composed of multiple pile bodies 3 arranged longitudinally along the subgrade. The pile bodies 3 of the front row of anti-slide piles 1 and the pile bodies 3 of the rear row of anti-slide piles 2 are arranged in a quincunx pattern. The lower ends of the front row of anti-slide piles 1 and the rear row of anti-slide piles 2 are anchored in the stable rock and soil mass 4. The top surface of the front row of anti-slide piles 1 is higher than the top surface of the rear row of anti-slide piles 2 and is flush with the road surface 5. The rear side of the front row of anti-slide piles 1 is in contact with the supported soil mass 6. The rear row of anti-slide piles 2 is located in the supported soil mass 6. The adjacent pile bodies 3 of the front row of anti-slide piles 1 are connected by a front beam 7. The adjacent pile bodies 3 of the rear row of anti-slide piles 2 are connected by a rear beam 8. A retaining plate 9 is provided between the adjacent pile bodies 3 of the front row of anti-slide piles 1. The pile body 3 of the front row of anti-slide piles 1 and the pile bodies 3 of the rear row of anti-slide piles 2 on both sides are connected by prestressed anchor cables 10. Specifically, each corner of the pile body 3 of the front row of anti-slide piles 1 and the rear row of anti-slide piles 2 is chamfered at equal intervals to form an anchoring surface 11. The pile body 3 of the front row of anti-slide piles 1 has two first anchoring holes on the two diagonal lines in the middle. These two first anchoring holes are staggered vertically. The pile bodies 3 of the rear row of anti-slide piles 2 on both sides of the pile body of the front row of anti-slide piles 1 have second anchoring holes corresponding to these two first anchoring holes. The prestressed anchor cable 10 includes a steel strand with prestress applied and anchors at both ends of the steel strand. One anchor is a pier head clamp and the other anchor is a pier head anchor. The structure of this prestressed anchor cable 10 is existing technology. The front end of the steel strand is located in the first anchoring hole of the pile body 3 of the front row of anti-slide piles 1 and the front end head clamp of the steel strand is located on the anchoring surface 11. The rear end of the steel strand is located in the second anchoring hole of the pile body 3 of the rear row of anti-slide piles 2 and the rear end head anchor is located on the anchoring surface 11. Here, the first anchoring hole and the second anchoring hole at both ends of the steel strand correspond to each other.
[0024] The retaining wall for high fill roadbed provided by the utility model supports the soil body 6 by the pile body 3 of the front row of anti-slide piles 1, and the upper end of the pile body 3 of the front row of anti-slide piles 1 is cantilevered although the lower end is anchored in the stable rock-soil body 4, so the rear row of anti-slide piles 2 are arranged, the middle part of the pile body 3 of the front row of anti-slide piles 1 is connected with the upper end of the pile body 3 of the rear row of anti-slide piles 2 on the two sides through the prestressed anchor cable 10, the cantilevered section of the pile body 3 of the front row of anti-slide piles 1 is pulled by the cantilevered section of the pile body 3 of the rear row of anti-slide piles 2 on the two sides, the pulling mode of one to two makes the cantilevered section of the pile body 3 of the front row of anti-slide piles 1 be subjected to the anchoring effect of two points and two directions, and the front row of anti-slide piles 1 can stably support the roadbed with higher filling height. The steel strands of the prestressed anchor cable 11 are arranged on the diagonal lines of the pile body 3 of the front row of anti-slide piles 1 and the pile body 3 of the rear row of anti-slide piles 2 respectively, and the anchoring effect is stronger. The strength of the front row of anti-slide piles 1 is enhanced by arranging the front beam 7, and the strength of the rear row of anti-slide piles 2 is enhanced by arranging the rear beam 8.
[0025] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model and not to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions, and all of them should be covered in the scope of the claims of the utility model.
Claims
1. A retaining wall for high embankment highway roadbed, characterized by: It includes front row anti-slide pile (1) and rear row anti-slide pile (2), the pile body (3) of front row anti-slide pile (1) and the pile body (3) of rear row anti-slide pile (2) are arranged in plum blossom shape, the lower end of front row anti-slide pile (1) and rear row anti-slide pile (2) is anchored in stable rock-soil body (4), the top surface of front row anti-slide pile (1) is higher than the top surface of rear row anti-slide pile (2) and is at least flush with highway pavement (5), the rear side of front row anti-slide pile (1) is in contact with supported soil body (6), rear row anti-slide pile (2) is located in supported soil body (6), the adjacent two pile bodies (3) of front row anti-slide pile (1) are provided with soil retaining plate (9), the middle part of pile body (3) of front row anti-slide pile (1) is connected with the upper end of pile body (3) of rear row anti-slide pile (2) on both sides thereof by prestressed anchor cable (10) respectively.
2. The retaining wall for high fill highway embankments of claim 1, wherein: The prestressed anchor cable (10) includes prestressed steel strand and anchor at both ends of the steel strand.
3. The retaining wall for high fill highway embankments of claim 2, wherein: The corner of each pile body (3) of front row anti-slide pile (1) and rear row anti-slide pile (2) is chamfered equidistantly to form anchoring surface (11), the front end of steel strand is located on the diagonal line of pile body (3) of front row anti-slide pile (1) and the anchor at the front end of steel strand is located on anchoring surface (11), the rear end of steel strand is located on the diagonal line of pile body (3) of rear row anti-slide pile (2) and the anchor at the rear end of steel strand is located on anchoring surface (11), the two steel strands on each pile body (3) are vertically staggered.
4. The retaining wall for high fill highway embankments of claim 3, wherein: The front end anchor of steel strand is pier head clamp, and the rear end anchor of steel strand is pier head anchor.
5. A retaining wall for high embankment highway roadbeds according to any one of claims 1-4, characterized in that: The adjacent two pile bodies (3) of front row anti-slide pile (1) are connected by front beam (7).
6. The retaining wall for high fill highway embankments of claim 5, wherein: The adjacent two pile bodies (3) of rear row anti-slide pile (2) are connected by rear beam (8). The adjacent two pile bodies (3) of front row anti-slide pile (1) are connected by front beam (7).