Pile plate type retaining wall capable of adjusting landslide thrust distribution
By setting a thrust adjustment structure in the pile-slab retaining wall, the landslide thrust distribution is adjusted to a triangle, which solves the problem of high cost of existing pile-slab retaining walls and achieves the effects of saving materials and shortening the construction period.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-04-10
AI Technical Summary
For existing pile-slab retaining wall structures, the horizontal thrust of rock landslides or dense soil landslides is generally distributed in a rectangular or trapezoidal shape, resulting in a large demand for pile cross-sections and reinforcement, and thus higher costs.
Design a pile-slab retaining wall with adjustable landslide thrust distribution. By setting a thrust adjustment structure on the retaining plate, the landslide thrust decreases from bottom to top along the axis of the anti-slide pile, and the landslide thrust distribution pattern is adjusted to a triangle to reduce the bending moment.
It significantly reduces the bending moment of the pile-slab retaining wall caused by landslide thrust, saves steel bars and concrete, and reduces engineering costs. It is particularly suitable for the treatment of medium and large-sized rock landslides.
Smart Images
Figure CN224106437U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of slope protection, and specifically relates to a pile board type retaining wall capable of adjusting landslide thrust distribution. BACKGROUND
[0002] With large-scale construction of national highway network and large-scale development of mines, a large number of excavated exposed slopes have a serious impact on soil and water conservation, ecological balance and environmental protection, causing significant losses. Ecological destruction of slopes not only directly leads to soil erosion and destroys engineering construction itself, but also causes impact and threat to people's life and property safety through environmental and safety disasters.
[0003] Newly excavated slopes often affect the ecological balance state. Under the influence of environmental and engineering factors, slopes are prone to induce geological disasters such as collapse and landslide, causing huge economic losses and casualties. Therefore, after the formation of the slope by excavation, slope protection measures need to be taken to avoid landslide geological disasters.
[0004] The pile board type retaining wall is a light retaining wall composed of reinforced concrete piles and retaining boards. Its working mode is that the soil pressure or landslide thrust is transmitted to the anti-slide pile through the retaining board between the piles, and the anti-slide pile transmits the soil pressure or landslide thrust and bending moment to the lower stable rock-soil mass by using its own bending and shearing capacity, so as to achieve the purpose of landslide support and reinforcement. It is a commonly used structure for slope protection at present.
[0005] However, the existing pile board type retaining wall structure has the problems that for rock landslide or dense soil landslide, the landslide horizontal thrust is generally similar to rectangular distribution or trapezoidal distribution, the bending moment is large, and therefore a large pile section and reinforcement are required, resulting in high cost. CONTENT OF THE UTILITY MODEL
[0006] Therefore, it is necessary to provide a pile board type retaining wall capable of adjusting landslide thrust distribution in view of the problems of the existing pile board type retaining wall structure, i.e. the landslide horizontal thrust is generally similar to rectangular distribution or trapezoidal distribution, a large pile section and reinforcement are required, and the cost is high.
[0007] A pile board type retaining wall capable of adjusting landslide thrust distribution comprises:
[0008] An anti-slide pile for embedding in the soil body;
[0009] A retaining board installed on the anti-slide pile, and the retaining board is located on the side of the anti-slide pile close to the slope;
[0010] A thrust adjusting structure installed on the retaining board, the stiffness of the thrust adjusting structure decreases from bottom to top along the axial direction of the anti-slide pile, so that the landslide thrust borne by the anti-slide pile is in triangular distribution.
[0011] In one of the embodiments, the thrust adjusting structure comprises a first thrust adjusting structure, which is arranged between the anti-slide pile and the retaining board, and the rigidity of the first thrust adjusting structure decreases from bottom to top along the axial direction of the anti-slide pile.
[0012] In one of the embodiments, the thrust adjusting structure comprises a second thrust adjusting structure, which is arranged between the retaining board and the landslide rock mass, and the rigidity of the second thrust adjusting structure decreases from bottom to top along the axial direction of the anti-slide pile.
[0013] In one of the embodiments, the thrust adjusting structure comprises a first thrust adjusting structure and a second thrust adjusting structure, the first thrust adjusting structure is arranged between the anti-slide pile and the retaining board, and the second thrust adjusting structure is arranged between the retaining board and the landslide rock mass, and the rigidity of the first thrust adjusting structure and the second thrust adjusting structure decreases from bottom to top along the axial direction of the anti-slide pile.
[0014] In one of the embodiments, the first thrust adjusting structure comprises a plurality of damping elastic groups, which are arranged in sequence along the axial direction of the anti-slide pile, and the rigidity of the plurality of damping elastic groups decreases from bottom to top.
[0015] In one of the embodiments, the damping elastic group is a damping spring group.
[0016] In one of the embodiments, the bottom of the retaining board is rigidly connected to the anti-slide pile by concrete.
[0017] In one of the embodiments, the second thrust adjusting structure comprises a plurality of fillers with different rigidities, which are filled in layers, and the rigidity of the fillers filled in layers decreases from bottom to top.
[0018] In one of the embodiments, the fillers from bottom to top comprise a first filling layer, a second filling layer, a third filling layer, a fourth filling layer, and a fifth filling layer.
[0019] In one of the embodiments, the first filling layer is filled with coarse-grained pervious concrete, the second filling layer is filled with rammed lime-soil or gravel, the third filling layer is filled with rammed sand-gravel, gravel or sand-gravel, the fourth filling layer is filled with pervious material or lime-soil ramming, and the fifth filling layer is filled with clay sealing.
[0020] The aforementioned pile-slab retaining wall with adjustable landslide thrust distribution typically exhibits a rectangular or trapezoidal distribution of horizontal landslide thrust in rock or dense soil landslides. By designing a thrust adjustment structure on the retaining plate, the stiffness of which decreases sequentially from bottom to top along the axial direction of the anti-slide piles, the distribution pattern of the horizontal landslide thrust in the pile-slab retaining wall is adjusted to triangular. Compared to the rectangular or trapezoidal distribution of landslide thrust, this significantly reduces the bending moment exerted on the pile-slab retaining wall by the landslide thrust, thereby significantly improving the stress conditions of the piles and saving steel reinforcement and concrete. Attached Figure Description
[0021] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.
[0022] Figure 1 This is a schematic diagram of a pile-slab retaining wall with adjustable landslide thrust distribution in one embodiment.
[0023] Figure 2 for Figure 1 The side view of a pile-slab retaining wall with adjustable landslide thrust distribution is shown.
[0024] Figure 3 for Figure 1 The front view of a pile-slab retaining wall with adjustable landslide thrust distribution is shown.
[0025] Figure 4 This is a structural schematic diagram of a pile-slab retaining wall with adjustable landslide thrust distribution, as described in another embodiment.
[0026] Figure 5 for Figure 4 The side view of a pile-slab retaining wall with adjustable landslide thrust distribution is shown.
[0027] Figure 6 for Figure 4 The image shows a front view of a pile-slab retaining wall with adjustable landslide thrust distribution.
[0028] Figure label:
[0029] 10-Anti-slide pile, 20-Retaining plate, 31-First thrust adjustment structure, 311-Damping elastic group, 312-Connecting concrete, 32-Second thrust adjustment structure, 321-Filling material. Detailed Implementation
[0030] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific implementation disclosed below.
[0031] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present. The terms "vertical", "horizontal", "left", "right" and similar expressions as used herein are for illustrative purposes only and are not intended to be limiting.
[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
[0033] Please refer to Figure 1 In an embodiment, the pile-slab retaining wall capable of adjusting landslide thrust force distribution is mainly used for rock landslide or dense soil landslide treatment, and can also be used in other landslide scenes with rectangular or trapezoidal distribution of horizontal thrust force.
[0034] In an embodiment, the pile-slab retaining wall capable of adjusting landslide thrust force distribution comprises a slide-resistant pile 10, a retaining slab 20 and a thrust force adjusting structure. The slide-resistant pile 10 is embedded in the soil, the retaining slab 20 is installed on the slide-resistant pile 10, and the retaining slab 20 is located on the side of the slide-resistant pile 10 close to the slope. The retaining slab 20 can be implemented in a prefabricated assembly manner, which can improve the construction efficiency of the retaining slab 20.
[0035] The thrust force adjusting structure is installed on the retaining slab 20, and the rigidity of the thrust force adjusting structure decreases from bottom to top along the axial direction of the slide-resistant pile 10, so that the landslide thrust force borne by the slide-resistant pile 10 is in a triangular distribution. Adjusting the distribution mode of the horizontal thrust force of the landslide on the pile-slab retaining wall to be triangular can significantly reduce the bending moment of the landslide thrust force acting on the pile-slab retaining wall, thereby significantly improving the stress condition of the pile and saving steel and concrete.
[0036] As Figure 1As shown, in an embodiment, the thrust adjusting structure includes a first thrust adjusting structure 31 arranged between the anti-slide pile 10 and the retaining plate 20, and the rigidity of the first thrust adjusting structure 31 decreases from bottom to top along the axial direction of the anti-slide pile 10. As shown in the figure, the first thrust adjusting structure 31 includes a plurality of damping elastic groups 311 arranged in the axial direction of the anti-slide pile 10, and the rigidity of the damping elastic groups 311 decreases from bottom to top. Figure 4 As shown, alternatively, the thrust adjusting structure includes a second thrust adjusting structure 32 arranged between the retaining plate 20 and the landslide rock mass, and the rigidity of the second thrust adjusting structure 32 decreases from bottom to top along the axial direction of the anti-slide pile 10. Alternatively, the thrust adjusting structure includes the first thrust adjusting structure 31 and the second thrust adjusting structure 32, which work together to adjust the distribution of landslide thrust on the pile and plate wall.
[0037] That is, the thrust adjusting can be performed separately between the anti-slide pile 10 and the retaining plate 20, separately between the retaining plate 20 and the landslide rock mass, or between the anti-slide pile 10 and the retaining plate 20 and between the retaining plate 20 and the landslide rock mass. Among them, the first thrust adjusting structure 31 is suitable for urban and municipal buildings or important building-intensive areas with strict deformation control requirements. By arranging the damping spring group between the pile and the plate, the distribution of landslide thrust can be more accurately allocated. The second thrust adjusting structure 32 is suitable for pile and plate walls used in most rock landslides and dense soil landslides. The combination of the first thrust adjusting structure 31 and the second thrust adjusting structure 32 is suitable for scenarios where the landslide thrust is large and the landslide thrust is accurately distributed.
[0038] Please refer to Figures 1 to 3 In an embodiment, the first thrust adjusting structure 31 includes a plurality of damping elastic groups 311 arranged in the axial direction of the anti-slide pile 10, and the rigidity of the damping elastic groups 311 decreases from bottom to top.
[0039] In an embodiment, the bottom of the retaining plate 20 is rigidly connected with the anti-slide pile 10 through the connecting concrete 312 to connect the pile and plate type retaining wall as a whole. The damping elastic group 311 is a damping spring group. Of course, in other embodiments, the damping elastic group 311 can also be other elastic components as long as it can realize elastic deformation.
[0040] Among them, the retaining plate 20 and the anti-slide pile 10 are connected by a hierarchical spring damping group, the bottom is provided with a high-rigidity spring, the middle is provided with a medium-rigidity spring, and the top is provided with a low-rigidity spring. By arranging the damping spring group between the retaining plate 20 and the anti-slide pile 10, the middle and lower parts of the anti-slide pile 10 are first stressed when the upper rock-soil mass deforms. With the increase of deformation, the anti-slide pile 10 bears more landslide force, and the upper part of the anti-slide pile 10 is gradually stressed, and the landslide thrust borne by the anti-slide pile 10 presents a positive triangular distribution characteristic.
[0041] Please refer to Figures 4 to 6In an embodiment, the second thrust adjusting structure 32 comprises fillers 321 with different stiffnesses which are layered from bottom to top with decreasing stiffnesses. By layering fillers 321 with different stiffnesses between the outer side of the retaining wall 20 and the landslide rock mass, the contact stiffness between the retaining wall 20 and the landslide rock mass is adjusted. When the upper rock mass deforms, the lower part of the anti-slide pile 10 is first stressed, and as the deformation increases, the sliding force borne by the anti-slide pile 10 increases, and the upper part of the pile is gradually stressed, and the sliding force borne by the anti-slide pile 10 presents a positive triangular distribution characteristic.
[0042] In an embodiment, the fillers 321 comprise, from bottom to top, a first filling layer, a second filling layer, a third filling layer, a fourth filling layer, and a fifth filling layer. The first filling layer is filled with coarse-particle permeable concrete 312, the second filling layer is filled with rammed lime-soil gravel or gravel, the third filling layer is filled with rammed sand-gravel or gravel, the fourth filling layer is filled with permeable material or lime-soil ramming, and the fifth filling layer is filled with clay sealing.
[0043] In the embodiment, the lower part is filled with coarse-particle permeable concrete 312 to a depth of 0.75-1.0h, the second filling layer is filled with rammed lime-soil gravel or gravel to a depth of 0.5-0.75h, the third filling layer is filled with rammed sand-gravel or gravel to a depth of 0.25-0.5h, the fourth filling layer is filled with permeable material or lime-soil ramming to a depth of 0.5m-0.25h, and the fifth filling layer is filled with clay sealing to a depth of 0-0.5m. The filling thickness is preferably 50cm.
[0044] The pile-wall retaining wall with adjustable landslide thrust distribution is suitable for rock landslide and dense soil landslide. The landslide thrust of such landslides is in a trapezoidal or rectangular distribution, and the bending moment is large. Under the same sliding force, a large pile section and reinforcement are required. In the present application, the landslide thrust distribution is adjusted from a rectangular or trapezoidal distribution to a triangular distribution, and the bending moment is reduced by 33.33%, and the anti-slide pile 10 section can be optimized by about 10-20%. It is particularly suitable for medium and large rock landslide treatment projects with a landslide thrust of 500-1500kN / m or more, and can shorten the construction period by more than 20%, with significant technical and economic advantages.
[0045] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for part or all of the technical features; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application.
Claims
1. A sheet-pile retaining wall with adjustable landslide thrust distribution, characterized in that, The utility model relates to a landslide prevention structure, comprising: a slide-resistant pile embedded in soil; a retaining board installed on the slide-resistant pile and located on the side of the slide-resistant pile close to a slope; a thrust adjusting structure installed on the retaining board, the rigidity of the thrust adjusting structure decreasing from bottom to top along the axial direction of the slide-resistant pile, so that the thrust of the slide-resistant pile is distributed in a triangular shape.
2. The pile-slab retaining wall with adjustable landslide thrust distribution according to claim 1, characterized in that, The thrust adjusting structure comprises a first thrust adjusting structure arranged between the slide-resistant pile and the retaining board, and the rigidity of the first thrust adjusting structure decreases from bottom to top along the axial direction of the slide-resistant pile.
3. The pile-slab retaining wall with adjustable landslide thrust distribution according to claim 1, characterized in that, The thrust adjusting structure comprises a second thrust adjusting structure arranged between the retaining board and a landslide rock mass, and the rigidity of the second thrust adjusting structure decreases from bottom to top along the axial direction of the slide-resistant pile.
4. The pile-slab retaining wall with adjustable landslide thrust distribution according to claim 1, characterized in that, The thrust adjusting structure comprises a first thrust adjusting structure and a second thrust adjusting structure, the first thrust adjusting structure is arranged between the slide-resistant pile and the retaining board, the second thrust adjusting structure is arranged between the retaining board and a landslide rock mass, and the rigidity of the first thrust adjusting structure and the second thrust adjusting structure decreases from bottom to top along the axial direction of the slide-resistant pile.
5. A pile-slab retaining wall with adjustable landslide thrust distribution according to claim 2 or 4, characterized in that, The first thrust adjusting structure comprises a plurality of damping elastic groups, the plurality of damping elastic groups are arranged in sequence along the axial direction of the slide-resistant pile, and the rigidity of the plurality of damping elastic groups decreases from bottom to top.
6. The pile-slab retaining wall with adjustable landslide thrust distribution according to claim 5, characterized in that, The damping elastic group is a damping spring group.
7. The pile-slab retaining wall with adjustable landslide thrust distribution according to claim 5, characterized in that, The bottom of the retaining board is rigidly connected to the slide-resistant pile through concrete.
8. A pile-slab retaining wall with adjustable landslide thrust distribution according to claim 3 or 4, characterized in that The second thrust adjusting structure comprises a plurality of layers of fillers with different rigidity, and the rigidity of the plurality of layers of fillers decreases from bottom to top.
9. The pile-slab retaining wall with adjustable landslide thrust distribution according to claim 8, characterized in that The plurality of layers of fillers comprises a first filling layer, a second filling layer, a third filling layer, a fourth filling layer and a fifth filling layer from bottom to top.
10. The pile-slab retaining wall with adjustable landslide thrust distribution according to claim 9, characterized in that, The first filling layer is filled with coarse-particle permeable concrete, the second filling layer is filled with rammed lime-soil, the third filling layer is filled with rammed sand-gravel, the fourth filling layer is filled with permeable material or lime-soil, and the fifth filling layer is filled with clay.