Deformation compaction anti-sliding anchor cable supporting mechanism and system

Abstract

The invention provides a deformation compaction anti-sliding anchor cable supporting mechanism and system.The mechanism comprises an anchor cable and a loading plate, the loading plate is arranged on a slope, a rolling groove is formed in the loading plate, and a rolling shaft is arranged in the rolling groove; the anchor cable comprises an anchoring section, a free section and an anchor head which are sequentially connected, the anchoring section is located in the sliding bed, the free section is located in the sliding body, the anchor head is connected with the rolling shaft, the rolling shaft rolls in the rolling groove, and the free section can be stretched. The system comprises a plurality of the above mechanisms, the plurality of loading plates are arranged independently, or the plurality of loading plates are connected with each other through steel-concrete beam structures, and a frame protection slope is formed on a slope surface. The device has the beneficial effects that a soil body of a sliding body can be further compacted, so that the compactness and the strength of the soil body are improved; and meanwhile, the anti-sliding force on the sliding surface is further increased due to the larger downward pressure, and the risk of further sliding deformation is reduced.

Description

Technical Field

[0001] This invention relates to the field of slope protection technology, specifically to a deformation compaction anti-slip anchor cable support mechanism and system. Background Technology

[0002] Anchor cable and frame beam structures are frequently used in slope protection and anti-slide stabilization projects. However, this type of anchoring often encounters problems in actual engineering, reducing or even eliminating the structure's protective effect on the slope. For example, the anchoring force of the anchor cable is transmitted to the slope surface through the frame beam, but this force's diffusion range is drastically reduced, resulting in its effect on slope deformation and anti-slide only acting on the surface layer. Furthermore, the contact between the frame beam and the slope soil often fails due to soil erosion, slope mechanical creep, and other factors, leading to anchoring failure. When the slope undergoes significant deformation, the sliding soil loosens, expands in volume, and its strength decreases significantly, exacerbating slope instability. Deformation of slope materials in natural environments is unavoidable, thus the "anchor cable + frame beam" slope treatment scheme has certain inherent defects. To address these problems in practical engineering, this invention provides a deformation compaction anti-slide anchor cable support mechanism and system, which is of significant importance. Summary of the Invention

[0003] The purpose of this invention is to address at least one of the aforementioned shortcomings of the prior art. For example, one objective of this invention is to provide a deformation compaction anti-slip anchor cable support mechanism with a reasonable structure that can increase the normal pressure between the sliding body and the sliding bed, further enhancing the slope's own anti-slip force. Another objective of this invention is to provide a deformation compaction anti-slip anchor cable support system that is less prone to failure under contact compression.

[0004] To achieve the above objectives, the present invention provides a deformation compaction anti-slip anchor cable support mechanism, which may include an anchor cable and a loading plate. The loading plate is disposed on a slope surface and has a groove on the loading plate, in which a roller is provided. The anchor cable includes an anchoring section, a free section and an anchor head connected in sequence. The anchoring section is located in a sliding bed, the free section is located in a sliding body, the anchor head is connected to the roller, the roller rolls in the groove, and the free section can be stretched.

[0005] According to an exemplary embodiment of one aspect of the present invention, anti-slip teeth may be provided on the end face of the loading plate that contacts the slope.

[0006] According to an exemplary embodiment of one aspect of the present invention, the concave profile of the groove may be a curve rising relative to the slope line; the bottom end of the groove surface may be the beginning of the groove, and the top end of the groove surface may be the end of the groove.

[0007] According to an exemplary embodiment of one aspect of the present invention, both the beginning and end of the groove may be provided with a limiting block matching the roller radius.

[0008] According to an exemplary embodiment of one aspect of the present invention, when the sliding body pressed down by the loading plate deforms or loosens, the roller can roll upward relative to the groove, the support angle of the anchor cable decreases, and the support angle is the angle between the free section and the horizontal plane.

[0009] According to an exemplary embodiment of one aspect of the present invention, the anchor cable may be arranged perpendicularly to the slope.

[0010] According to an exemplary embodiment of one aspect of the present invention, when the anchor head is at the beginning of the groove, it may be in the initial position, at which time the tension of the anchor cable is perpendicular to the tangent at the bottom of the groove surface.

[0011] According to an exemplary embodiment of one aspect of the present invention, the design of the geometry and dimensional parameters of the groove may include using the motion trajectory equation of the roller; the motion trajectory equation of the roller is: y = ae bx+c +d; where y is the longitudinal displacement of the roller in the groove; x is the distance the roller moves in the direction parallel to the loading plate; and a, b, c, and d are natural numbers.

[0012] According to an exemplary embodiment of one aspect of the present invention, the downward deformation of the loading plate can increase exponentially with the downward deformation.

[0013] Another aspect of the present invention provides a deformation compaction anti-slip anchor cable support system, the system may include several deformation compaction anti-slip anchor cable support mechanisms as described above, several loading plates are arranged independently of each other, or several loading plates are connected to each other by a steel-concrete beam structure to form a frame slope protection on the slope.

[0014] Compared with the prior art, the beneficial effects of the present invention include at least one of the following:

[0015] (1) The deformation compaction anti-slip anchor cable support mechanism proposed in this invention can solve the problem of reduced anchor support force or failure by taking advantage of the inevitable sliding deformation of the slope. In the anchor-frame beam combined support structure, it can reduce the problem of easy failure of frame beam in contact with soil.

[0016] (2) The rigid connection between the slope protection structure (loading plate) and the anchor support structure (anchor cable) of the deformation compaction anti-slip anchor cable support mechanism proposed in this invention is decoupled. The anchor cable can respond to the movement of the loading plate, so that the greater the slope deformation, the greater the clamping force of the anchor structure on the slope.

[0017] (3) The deformation compaction anti-slip anchor cable support mechanism proposed in this invention can generate the action mechanism of "sliding body deformation - increased anchor cable tensile stress - greater support force - loading plate squeezing the sliding body - loading plate generating greater downward pressure on the sliding body". The benefits of this mechanism are: firstly, the soil of the sliding body is further compacted, which improves the soil density and strength; secondly, the greater downward pressure brings a further increase in the anti-slip force on the sliding surface, reducing the risk of further sliding deformation. Attached Figure Description

[0018] The above and other objects and features of the present invention will become clearer from the following description taken in conjunction with the accompanying drawings, in which:

[0019] Figure 1 A structural schematic diagram of a deformation compaction anti-slip anchor cable support mechanism according to an exemplary embodiment of the present invention is shown;

[0020] Figure 2 A schematic diagram of the loading plate structure is shown;

[0021] Figure 3 Another structural schematic diagram of the loading plate is shown;

[0022] Figure 4A The ps curve of the loading plate load test is shown;

[0023] Figure 4B Another loading plate load test ps curve is shown;

[0024] Figure 5 A schematic diagram of the groove shape is shown;

[0025] Figure 6 A structural schematic diagram of a deformation compaction anti-slip anchor cable support system according to another exemplary embodiment of the present invention is shown;

[0026] Figure 7 A schematic diagram of the grooved connection is shown.

[0027] Explanation of key figure labels:

[0028] 1-Anchoring section, 2-Free section, 3-Anchor head, 4-Loading plate, 5-Groove, 6-Roller, 7-Anti-slip teeth. Detailed Implementation

[0029] In the following, a deformation compaction anti-slip anchor cable support mechanism and system of the present invention will be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0030] In the description of this application, it should be understood that the terms "center", "horizontal", "bottom", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this application.

[0031] In the description of this application, unless otherwise stated, "a number" means two or more. It should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] Exemplary Example 1

[0033] This exemplary embodiment provides a deformation compaction anti-slip anchor cable support mechanism.

[0034] like Figures 1 to 3 As shown, the deformation compaction anti-slip anchor cable support mechanism may include anchor cables and loading plates 4.

[0035] The loading plate 4 is located on the slope, and a groove 5 is provided on the loading plate 4. The concave profile of the groove 5 is a curve that gradually rises relative to the slope line. A roller 6 is installed in the groove 5 and can roll along the groove 5. The anchor cable is straight as a whole. The anchor cable includes an anchoring section 1, a free section 2, and an anchor head 3 connected in sequence. The anchoring section 1 is located in the slide, the free section 2 is located in the slide body, one end of the free section 2 passes through the loading plate 4 and connects to the anchor head 3, and the anchor head 3 is fixed on the shaft of the roller 6.

[0036] In this exemplary embodiment, the installation angle between the anchor cable and the slope can be designed according to the anti-slip anchor cable design. For example, the anchor cable can be set perpendicular to the slope.

[0037] In this exemplary embodiment, the anchor cable of the present invention differs from most conventional anchor cable structures in the anchor head portion. The anchor head of the present invention is not directly rigidly connected to the slope protection structure (loading plate) that bears the anchoring force; instead, the anchor head is fixed to the shaft of a roller, and the anchoring force is transmitted through the contact between the roller and the groove in the loading plate.

[0038] In this exemplary embodiment, when the sliding body pressed down by the loading plate deforms or loosens, the rollers roll upwards relative to each other along the groove under the pull of the anchor cable, while the anchor cable support angle decreases (the angle between the free section of the anchor cable and the horizontal plane). At this time, the length of the free section of the anchor cable is stretched, generating a greater support force acting on the loading plate (i.e., the bearing plate), and the bearing plate is pressed against the sliding body by the support force. Thus, the present invention can produce a mechanism of action of "sliding body deformation – increased anchor cable tensile stress – greater support force – bearing plate squeezing the sliding body – bearing plate generating greater downward pressure on the sliding body".

[0039] In this exemplary embodiment, in order to ensure the rationality of the force on the anchor cable during the deformation movement relative to the bearing plate, the geometry and parameters of the groove on the bearing plate need to be reasonably designed.

[0040] ps curve from the bearing plate test of soil ( Figure 4A and Figure 4B As can be seen, during the deformation process, soil undergoes a compaction stage, a plastic zone development stage, and a shear failure stage, with the deformation increasing exponentially with the load. Similarly, in landslides, the soil structure is damaged during sliding deformation, resulting in decreased density, reduced strength, and increased compression modulus. Therefore, to effectively compact the soil using the anchoring force generated by the anchor cables, a rapid increase in compression deformation is required. To ensure the structure of this invention provides safety protection during slope sliding deformation, the compression deformation of the bearing plate must increase exponentially with the sliding deformation. Here, the ps curve, obtained from load tests, is used to illustrate the basic design principle of this invention.

[0041] like Figure 5 As shown, the roller 6, with the anchor head 3 fixed, can roll on the groove 5, and the rolling force comes from the sliding of the sliding body. The bottom end of the groove surface is the beginning of the groove, and the anchor head is at the beginning of the groove when it is in the initial position; the top end of the groove surface is the end of the groove, and the roller can reach the end of the groove. Figure 5 (The position indicated by the leftmost dashed circle). The tension of the anchor cable reaches a temporary equilibrium state when it is perpendicular to the tangent at the contact point of the roller groove. The anchor cable tension is [value missing] when the roller is in the initial installation position. The tangent perpendicular to the bottom edge of the groove surface.

[0042] The design of the groove's geometry and parameters requires consideration of the anchor cable's free section length, installation angle, the sliding deformation limit of the sliding body, the x and y coordinates of the roller displacement when the roller is at the beginning and end, and the normal direction of the groove when the roller is at the beginning and end. From this, the equation for the roller's motion trajectory can be derived: y = ae bx+c +d; where y is the longitudinal displacement of the roller in the groove; x is the distance the roller moves in the direction parallel to the loading plate; a, b, c, and d are natural numbers. The shape and dimensions of the groove are then designed.

[0043] In this exemplary embodiment, both the beginning and end of the groove can be provided with limiting blocks that match the roller radius, ensuring that the support structure of the present invention can function stably.

[0044] In this exemplary embodiment, as Figure 2 As shown in Figure 3, anti-slip teeth 7 may be provided on the end face of the loading plate 4 that is in contact with the slope.

[0045] In this exemplary embodiment, the main tension structure of the anchor cable (primarily referring to the tensile structure, such as steel cable, steel strand bundle, etc.) should preferably be a hot-extruded PE-sleeved parallel steel strand cable, which has excellent qualities such as high strength and corrosion resistance. While meeting the tensile strength requirements, the material has a relatively small cross-section, good overall material integrity, and is less prone to uneven deformation under the complex action of deep soil and rock.

[0046] In this exemplary embodiment, the pressure plate can be a precast reinforced concrete structure, and the material strength meets the engineering requirements. Specifically, because the contact area between the roller and the groove is relatively small and the pressure is relatively high, structural reinforcement material needs to be used at the connection between the groove surface and the pressure plate. Possible connection and fixing methods include... Figure 7 As shown, the grooving is fixed by fixing the reinforcing bars and rails. The principle is the same as fixing the rails to the reinforced concrete members. This can distribute the pressure and transfer the load to the reinforced concrete members.

[0047] Exemplary Example 2

[0048] This exemplary embodiment provides a deformation compaction anti-slip anchor cable support system.

[0049] The deformation compaction anti-slip anchor cable support system of this exemplary embodiment may include several deformation compaction anti-slip anchor cable support mechanisms as described in Exemplary Embodiment 1 above.

[0050] In this exemplary embodiment, as Figure 6 As shown, several loading plates of several deformation compaction anti-slip anchor cable support mechanisms can be set independently of each other to form a frame slope protection structure on the slope.

[0051] In this exemplary embodiment, several loading plates of several deformation compaction anti-slip anchor cable support mechanisms can be interconnected through a steel-concrete composite beam structure to form a frame slope protection structure on the slope.

[0052] In summary, the beneficial effects include:

[0053] This invention provides a deformation compaction anti-slide anchor cable support mechanism and system, mainly applied in the field of slope support. Compared with the working principle of previous anchor support structures, the structure of this invention allows the bearing plate to gradually compress the rock and soil of the sliding body as the slope slides down, making the rock and soil relatively dense. This means that the mechanical strength of the sliding body material will not decrease too much (or the sliding body will not become a loose body with almost no strength due to sliding), which helps the overall stability of the sliding body. As the slope slides down, the bearing plate gradually compresses the rock and soil of the sliding body, which can increase the normal pressure between the sliding body and the sliding bed, further improving the slope's own anti-slide force. It allows the slope to undergo large deformations while ensuring safety, meaning that the contact between the bearing plate and the slope soil will not fail due to the compression effect. Similarly, because of the compression effect between the bearing plate and the slope soil, the contact force between the bearing plate and the soil caused by water and soil erosion or other external factors can recover to a certain extent on its own.

[0054] Although a deformation compaction anti-slip anchor cable support mechanism and system of the present invention has been described above in conjunction with exemplary embodiments, those skilled in the art should understand that various modifications and changes can be made to the exemplary embodiments of the present invention without departing from the spirit and scope defined by the claims.

Claims

1. A deformation pressure anti-slide anchor cable supporting mechanism, characterized in that, The mechanism comprises an anchor cable and a loading plate, wherein, The loading plate is arranged on the slope surface, and a rolling groove is arranged on the loading plate, and a rolling shaft is arranged in the rolling groove; The anchor cable comprises an anchoring segment, a free segment and an anchor head connected in sequence, the anchoring segment is arranged in the sliding bed, the free segment is arranged in the sliding body, the anchor head is connected with the rolling shaft, the rolling shaft rolls in the rolling groove, and the free segment can be stretched.

2. The deformation pressure anti-slide anchor cable support mechanism according to claim 1, characterized in that, An anti-skid tooth is arranged on the end surface of the loading plate in contact with the slope surface.

3. The deformation pressure anti-slide anchor cable support mechanism according to claim 1, characterized in that, The inner concave surface profile line of the rolling groove is a curve rising relative to the slope line; the lowest end of the rolling groove surface is the initial end of the rolling groove, and the highest end of the rolling groove surface is the terminal end of the rolling groove.

4. The deformation pressure anti-slide anchor cable support mechanism according to claim 3, characterized in that, Limiting blocks matched with the radius of the rolling shaft are arranged at the initial end and the terminal end of the rolling groove.

5. The shape-changing pre-stressed anti-slide anchor cable support mechanism according to claim 1, characterized in that, When the sliding body of the loading plate is deformed or loosened, the rolling shaft rolls upward relative to the rolling groove, the supporting angle of the anchor cable becomes smaller, and the supporting angle is the included angle between the free segment and the horizontal plane.

6. The shape-changing pre-stressed anti-slide anchor cable support mechanism according to claim 1, characterized in that, The anchor cable is arranged vertically to the slope surface.

7. The shape-changing pre-stressed anti-slide anchor cable support mechanism according to claim 3, characterized in that, The anchor head is in the initial position when the anchor head is at the initial end of the rolling groove, and at this time, the tension of the anchor cable is perpendicular to the tangent line of the lowest end of the rolling groove surface.

8. The shape-changing pre-stressed anti-slide anchor cable support mechanism according to claim 7, characterized in that, The geometric shape and size parameters of the rolling groove are designed by the motion trajectory equation of the rolling shaft; Equation of the trajectory of the movement of the roller: y = ae bx+c + d; Wherein, y is the longitudinal displacement of the rolling shaft in the rolling groove; x is the movement distance of the rolling shaft in the direction parallel to the loading plate; a, b, c and d are natural numbers.

9. The shape-changing pre-stressed anti-slide anchor cable support mechanism according to claim 1, characterized in that, The deformation amount of the loading plate increases exponentially with the sliding deformation amount.

10. A deformation pressure anti-slide anchor cable support system, characterized in that, The system comprises a plurality of deformation pressure anti-slide anchor cable supporting mechanisms as claimed in any one of claims 1-9, and the plurality of loading plates are arranged independently, or the plurality of loading plates are connected with each other through a steel-concrete beam structure to form a frame slope protection on the slope surface.

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