A circular anti-slide pile with an exterior decoration and baffle suspension structure

Abstract

This utility model discloses an appearance decoration and retaining plate suspension structure for circular anti-slide piles, including a cylindrical anti-slide pile body constructed using rotary drilling machinery; reinforcing bars evenly arranged radially along the pile body, one end inserted into the pile body and the other end extending outward; a decorative concrete layer coaxially wrapped around the outside of the pile body, with the extended ends of the reinforcing bars extending into it, used to cover the rough surface of the pile body and serve as a retaining plate support carrier; and a straight retaining plate located on the outside of the decorative concrete layer, fitting snugly against the outer surface of the layer to achieve the soil retention function between piles. This structure can solve the problems of poor appearance of circular anti-slide piles and difficulty in retaining plate suspension, improve the road landscape effect, reduce earthwork excavation costs and retaining plate installation difficulty, ensure structural stability, and is compatible with existing construction techniques, making it highly practical.

Description

Technical Field

[0001] This utility model relates to the field of landslide control technology in transportation construction and slope protection engineering, specifically to the appearance decoration and baffle suspension structure of a circular anti-slide pile. Background Technology

[0002] In the fields of transportation construction and slope protection engineering, anti-slide piles are the core structural components of landslide control. Their technical characteristics and engineering applicability have a key impact on the control effect and long-term stability. Currently, the anti-slide piles commonly used in engineering practice are mainly divided into two categories: square anti-slide piles and circular anti-slide piles.

[0003] Among them, square anti-slide piles have significant technical advantages: they have a higher flexural modulus, which can fully utilize the mechanical properties of materials, and their single-pile anti-slide bearing capacity is superior to that of circular anti-slide piles; the outer side of the pile body is usually equipped with a concrete retaining structure, which not only improves the safety during construction but also improves the appearance quality of the pile body; the matching baffle uses standardized prefabricated components, which are convenient to install and have reliable connections. As an early mainstream pile type, square anti-slide piles were widely used in landslide control projects. However, this type of pile relies on manual excavation, which poses a high safety risk. Due to this technological defect, some regions have listed it as an outdated technology with restricted use, and its application scenarios have gradually decreased.

[0004] With the popularization of mechanized construction technology, circular anti-slide piles are safer to construct than square anti-slide piles due to the use of rotary drilling machinery for hole formation, and the construction efficiency is increased by 40%-60%. They are especially suitable for areas with complex geological conditions. The application rate of circular anti-slide piles in newly constructed landslide control projects has gradually increased from 18% in 2018 to 47% in 2024, making them one of the mainstream pile types. However, circular anti-slide piles still have two major problems in practical applications, making it difficult to meet the current engineering requirements for aesthetics and ease of construction: On the one hand, the rotary drilling machine creates a naturally rough surface on the pile body, resulting in an uneven appearance and poor road appearance. In recent years, environmental protection and landscape requirements have been increasing, and this appearance defect of circular anti-slide piles is seriously incompatible with policy and engineering needs. On the other hand, circular anti-slide piles lack a retaining block structure on the outside to support the retaining plate. Currently, some design units use the method of directly supporting the arc-shaped retaining plate on the pile body to achieve the soil retention function. However, this method requires a large amount of excavation of the soil behind the pile, which increases the amount of earthwork and engineering costs. Moreover, there is no fixed connection between the arc-shaped retaining plate and the pile body, making it difficult to align during hoisting and installation, which reduces construction efficiency and affects the stability of the retaining plate after installation.

[0005] In summary, how to solve the problems of rough appearance of circular anti-slide piles and difficulty in hanging baffles has become a technical bottleneck that urgently needs to be overcome in current landslide control projects. Utility Model Content

[0006] In view of this, the purpose of this utility model is to overcome the shortcomings of existing related technologies and provide a decorative appearance and baffle suspension structure for circular anti-slide piles. This solves the problems of uneven surface and poor road appearance caused by rotary drilling, which makes it difficult to meet the requirements of current environmental protection and landscaping policies. It also addresses the issues of existing circular anti-slide piles lacking external baffle support, requiring the use of arc-shaped baffles directly supported on the pile body, leading to large excavation volumes behind the pile, high construction costs, and difficulties in aligning the baffles and pile body during hoisting and installation due to the lack of a fixed connection. Furthermore, by using rebar to reliably connect the decorative concrete layer to the anti-slide pile body, the overall structural stability is ensured. Simultaneously, the decorative concrete layer can be flexibly designed into various shapes such as hexagonal prisms and octagonal prisms to adapt to the diverse appearance requirements of different engineering scenarios, without requiring significant modifications to the main structure of the circular anti-slide pile. This design is compatible with existing rotary drilling technology for circular anti-slide piles, balancing functional practicality and engineering adaptability.

[0007] To achieve the above objectives, this utility model provides an appearance decoration and baffle suspension structure for a circular anti-slide pile, comprising:

[0008] The circular anti-slide pile body is a cylindrical structure constructed using rotary drilling machinery, and has a steel reinforcement cage inside.

[0009] Rebar is installed, wherein the rebar is evenly arranged radially along the circular anti-slide pile body, and one end of the rebar is inserted into the inside of the circular anti-slide pile body, and the other end extends out of the outside of the circular anti-slide pile body;

[0010] A finishing concrete layer is coaxially wrapped around the outside of the circular anti-slide pile body, and one end of the anchor bar extending out of the circular anti-slide pile body extends into the interior of the finishing concrete layer. The finishing concrete layer is used to cover the rough surface of the circular anti-slide pile body to optimize the appearance and to serve as a baffle support carrier.

[0011] A straight retaining plate is provided on the outside of the finishing concrete layer, and the straight retaining plate is attached to and supports the outer side of the finishing concrete layer. The straight retaining plate is used to realize the function of retaining soil between piles.

[0012] Furthermore, the rebar installation includes a first type of rebar installation, a second type of rebar installation, and a third type of rebar installation; the first type of rebar installation and the second type of rebar installation are inserted into the circular anti-slide pile body to a depth of not less than 20 times the rebar diameter, and the third type of rebar installation is inserted into the circular anti-slide pile body to a depth of not less than 40cm.

[0013] Furthermore, the decorative concrete layer is a C30 cast-in-place concrete structure, and the cross-sectional shape of the decorative concrete layer is hexagonal prism or octagonal prism.

[0014] Furthermore, it also includes a decorative layer, which is attached to the outer surface of the decorative concrete layer on the side away from the circular anti-slip pile body, and the decorative layer is an embossed layer or a painted layer.

[0015] Furthermore, there are no additional connecting parts between the straight retaining plate and the finishing concrete layer, and the straight retaining plate forms a close fit and support with the outer surface of the finishing concrete layer by its own weight.

[0016] Furthermore, it also includes a rebar adhesive, which fills the gap between the rebar and the implantation hole of the circular anti-slide pile body to enhance the connection strength between the rebar and the circular anti-slide pile body.

[0017] Furthermore, the reinforcing cage includes stirrups and reinforcing bars, and the net protective layer thickness between the outer reinforcing bars of the reinforcing cage and the inner wall of the circular anti-slide pile body is not less than 2cm.

[0018] Furthermore, the straight retaining plate is equipped with retaining plate reinforcement inside.

[0019] The present invention, by adopting the above technical solution, has at least the following beneficial effects:

[0020] In this invention, by setting a coaxially wrapped decorative concrete layer around the outside of the circular anti-slide pile, the rough surface of the pile caused by the rotary drilling machine can be directly covered, fundamentally solving the defect of uneven appearance of the circular anti-slide pile. At the same time, an embossed layer or a painted layer can be attached to the outside of the decorative concrete layer, which can not only improve the road appearance effect, but also meet the current environmental protection and landscape policy requirements, making the anti-slide pile more harmonious with the surrounding environment and making up for the shortcomings of the existing circular anti-slide pile in terms of insufficient landscape.

[0021] In this invention, a decorative concrete layer is used as the supporting carrier for a straight retaining plate, replacing the traditional method of "curved retaining plates directly supporting the pile body". On the one hand, the straight retaining plate does not need to be adapted to the curvature of the circular pile body, which greatly reduces the amount of soil excavation behind the pile and reduces earthwork construction costs and workload. On the other hand, the decorative concrete layer provides a stable support point for the retaining plate, avoiding the hoisting alignment problem caused by the lack of fixed connection between the retaining plate and the pile body, improving the installation efficiency of the retaining plate and the structural stability after installation, and solving the problems of poor convenience and high cost of existing retaining plate suspension construction.

[0022] In this invention, the decorative concrete layer is reliably connected to the circular anti-slide pile body by rebar installation. The rebar installation, combined with rebar adhesive to fill the gaps, further enhances the connection strength, ensuring that the decorative concrete layer and the pile body form an integral structure, taking into account both the aesthetic function and the structural load-bearing stability. At the same time, the decorative concrete layer can be flexibly designed into various cross-sectional shapes such as hexagonal prisms and octagonal prisms, without requiring major modifications to the main structure of the circular anti-slide pile. It can adapt to the diverse aesthetic requirements of different engineering scenarios and is compatible with circular anti-slide piles constructed using existing rotary drilling machinery, demonstrating good engineering adaptability and practicality. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a cross-sectional view of the cantilever section of the anti-slide pile of this utility model;

[0025] Figure 2 This is an elevation view of the cantilever section of the anti-slide pile with rebar installation.

[0026] Figure 3 This is a cross-sectional view of the external reinforcing steel bars of the cantilever section of the anti-slide pile of this utility model.

[0027] In the diagram: 1. Pile body; 2. Finishing concrete layer; 3. Retaining wall. Detailed Implementation

[0028] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this invention as detailed in the appended claims.

[0029] like Figures 1 to 3 As shown, this embodiment provides an appearance decoration and baffle suspension structure for a circular anti-slide pile, which includes: a circular anti-slide pile body 1, wherein the circular anti-slide pile body 1 is a cylindrical structure constructed by rotary drilling mechanical hole forming process, and has a steel cage inside;

[0030] Rebar is installed, wherein the rebar is evenly arranged along the radial direction of the circular anti-slide pile body 1, and one end of the rebar is inserted into the interior of the circular anti-slide pile body 1, and the other end extends out of the outside of the circular anti-slide pile body 1.

[0031] A decorative concrete layer 2 is coaxially wrapped around the outside of the circular anti-slide pile body 1, and one end of the rebar extending out of the circular anti-slide pile body 1 extends into the interior of the decorative concrete layer 2. The decorative concrete layer 2 is used to cover the rough surface of the circular anti-slide pile body 1 to optimize the appearance and to serve as a baffle support carrier.

[0032] A straight retaining plate 3 is provided on the outside of the finishing concrete layer 2, and the straight retaining plate 3 is attached to and supports the outer side of the finishing concrete layer 2. The straight retaining plate 3 is used to realize the function of retaining soil between piles.

[0033] As one implementation method, the rebar installation in this embodiment includes a first type of rebar installation, a second type of rebar installation, and a third type of rebar installation; the first type of rebar installation and the second type of rebar installation are inserted into the circular anti-slide pile body 1 to a depth of not less than 20 times the rebar diameter, and the third type of rebar installation is inserted into the circular anti-slide pile body 1 to a depth of not less than 40cm.

[0034] The first type of rebar corresponds to rebar ③, with a diameter of 12mm and a length of 43.0cm; the second type corresponds to rebar ④, with a diameter of 12mm and a length of 64.1cm; and the third type corresponds to rebar ⑤, with a diameter of 20mm and a length of 61.0cm. All three types of rebar use HRB400 steel bars and are evenly distributed circumferentially along the pile body 1 of the circular anti-slide pile. The circumferential spacing of adjacent rebars is precisely controlled by the cross-sectional dimensions of pile body 1 (diameter 2.2m) and the number of rebars to ensure the uniformity and stability of the connection. Furthermore, the vertical spacing of the rebars matches the vertical spacing of the reinforcing bars in the steel cage to ensure structural stress coordination.

[0035] In one embodiment, the decorative concrete layer 2 is a C30 cast-in-place concrete structure, and the cross-sectional shape of the decorative concrete layer 2 is a hexagonal prism or an octagonal prism.

[0036] When a hexagonal prism cross-section is used, the outer diameter of the concrete layer 2 precisely matches the diameter of the circular anti-slide pile body 1. Each prism face is a planar structure, providing a fitting support plane for the straight retaining wall 3. During cast-in-place construction, the circular anti-slide pile body 1 serves as the inner formwork support, while the outer side is supported by a customized steel formwork (suitable for hexagonal or octagonal prism shapes). During concrete pouring, layered compaction with a vibrator ensures density, resulting in a smooth surface after molding. This effectively covers the rough surface of the pile body 1 and enhances the landscape effect through optimized shape.

[0037] As one implementation, this embodiment also includes a decorative layer, which is attached to the outer surface of the decorative concrete layer 2 on the side away from the circular anti-slide pile body 1. The decorative layer is an embossed layer or a painted layer.

[0038] Before applying the decorative layer, the outer surface of the concrete layer 2 must be ground to ensure a smooth surface free of laitance and honeycomb pitting, providing a good base for the decorative layer to adhere. If an embossed layer is used, it can be implemented through "prefabricated embossed module pasting" or "on-site carving," with the embossed pattern designed to incorporate the cultural characteristics of the project area (such as local customs and natural landscape elements). If a painted layer is used, a special architectural coating with strong weather resistance and UV resistance must be selected, and the application must be carried out in multiple processes, including "primer and topcoat," to ensure that the paint does not fade or peel over a long period, making the anti-slip piles more harmonious with the surrounding environment.

[0039] In one embodiment, there are no additional connecting parts between the straight retaining plate 3 and the decorative concrete layer 2. The straight retaining plate 3 forms a close fit and support with the outer surface of the decorative concrete layer 2 by its own weight.

[0040] The straight retaining plate 3 is a precast reinforced concrete component, internally reinforced with steel bars (such as 12mm diameter HRB400 steel bars). Before leaving the factory, it undergoes strength and appearance inspections to ensure it is free of cracks and has intact edges and corners. During construction, the retaining plate 3 is hoisted to the outside of the finishing concrete layer 2 using hoisting equipment. By adjusting the hoisting position, the inner plane of the retaining plate 3 is precisely aligned with the outer surface of the finishing concrete layer 2. Stable support is achieved by the weight of the retaining plate 3 itself (determined by its size and concrete density), eliminating the need for additional welding or bolt connections, significantly simplifying the installation process and improving construction efficiency.

[0041] As one embodiment, this embodiment also includes anchoring adhesive, which fills the gap between the anchoring rebar and the implantation hole of the circular anti-slide pile body 1 to enhance the connection strength between the anchoring rebar and the circular anti-slide pile body 1.

[0042] The anchoring holes are drilled radially along the pile body using drilling equipment. The hole diameter is 4-8mm larger than the anchoring diameter (e.g., if the anchoring diameter is 12mm, the hole diameter should be 16mm or 18mm). The drilling depth must meet the anchoring depth requirements (no less than 20 times the diameter for Class I and Class II anchoring, and no less than 40cm for Class III anchoring). After drilling, use a high-pressure air pump and brush to clean the dust and debris inside the hole to ensure the hole wall is clean and dry. Use epoxy or modified epoxy special construction anchoring adhesive. When injecting the adhesive, inject it slowly from the bottom of the hole. The amount of adhesive injected should be such that the adhesive overflows from the hole opening after the anchoring is inserted and there are no air bubbles. After the anchoring is inserted, it needs to be allowed to cure (the curing time is determined according to the anchoring adhesive product instructions, generally no less than 24 hours). During the curing period, the anchoring must not be disturbed to ensure the connection strength.

[0043] In one embodiment, the reinforcing cage in this embodiment includes stirrups and reinforcing bars, and the net protective layer thickness between the outer reinforcing bars of the reinforcing cage and the inner wall of the circular anti-slide pile body 1 is not less than 2cm.

[0044] The stirrups of the reinforcing cage are made of HPB300 steel bars (as shown in ① and ② in the attached diagram, with a diameter of 6mm), arranged in a ring around the circumference of the circular anti-slide pile body 1, with the spacing determined according to design requirements (e.g., 20cm spacing in some areas). The main reinforcement bars are made of HRB400 steel bars (as shown in ③, ④, ⑤, ⑥, and ⑦ in the attached diagram, with a diameter of 12mm or 20mm), arranged longitudinally along the axial direction of pile body 1, and the stirrups surround the main reinforcement bars to form an integral reinforcing cage through "tying or welding". After the reinforcing cage is processed, concrete spacers are set on its outer side (the strength of the spacers is not lower than the concrete strength of pile body 1) to ensure that the net protective layer thickness between the outer layer of the reinforcing cage and the inner wall of pile body 1 is not less than 2cm, preventing steel bar corrosion and ensuring the structural durability of pile body 1.

[0045] As one implementation method, the straight retaining plate 3 in this embodiment is provided with retaining plate 3 steel bars inside.

[0046] The retaining slab 3 reinforcement includes main reinforcement and distribution reinforcement: the main reinforcement uses HRB400 steel bars (e.g., 12mm diameter bars) and is arranged along the stress direction of the retaining slab 3; the distribution reinforcement uses HPB300 steel bars (e.g., 6mm diameter bars) and is arranged perpendicular to the main reinforcement to form a steel mesh structure. The arrangement density and diameter of the retaining slab 3 reinforcement must meet the bending and shear mechanical requirements of the retaining slab 3; during construction, the reinforcement must be accurately cut and tied according to the design drawings to ensure that the positional deviation of the reinforcement meets the specifications, and the actual quantity of the retaining slab 3 reinforcement used must be accurately included in the overall quantity of the straight retaining slab 3 project as the basis for project measurement and cost accounting.

[0047] The circular anti-slide pile appearance decoration and retaining plate suspension structure in this embodiment, through the core design of "connecting the pile body 1 with the decorative concrete layer 2 by rebar" not only solves the problem of rough appearance of the rotary drilled pile body 1, but also provides a stable support carrier for the straight retaining plate 3; at the same time, the decorative layer can be flexibly customized in shape and decoration, and the installation process of the retaining plate 3 is simplified. The overall structure takes into account the aesthetics, construction convenience and structural stability, and is suitable for anti-slide pile landslide control projects with a pile diameter of 2.2m and an exposed length of no more than 10m, and has good engineering practicality and scene adaptability.

[0048] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A circular anti-slide pile's appearance decoration and baffle suspension structure, characterized in that: include: The circular anti-slide pile body is a cylindrical structure constructed using rotary drilling machinery, and has a steel reinforcement cage inside. Rebar is installed, wherein the rebar is evenly arranged radially along the circular anti-slide pile body, and one end of the rebar is inserted into the inside of the circular anti-slide pile body, and the other end extends out of the outside of the circular anti-slide pile body; A finishing concrete layer is coaxially wrapped around the outside of the circular anti-slide pile body, and one end of the anchor bar extending out of the circular anti-slide pile body extends into the interior of the finishing concrete layer. The finishing concrete layer is used to cover the rough surface of the circular anti-slide pile body to optimize the appearance and to serve as a baffle support carrier. A straight retaining plate is provided on the outside of the finishing concrete layer, and the straight retaining plate is attached to and supports the outer side of the finishing concrete layer. The straight retaining plate is used to realize the function of retaining soil between piles.

2. The outer decoration and fender suspension structure of a round anti-slide pile according to claim 1, characterized in that: The rebar installation includes a first type of rebar installation, a second type of rebar installation, and a third type of rebar installation; the first type of rebar and the second type of rebar installation are inserted into the circular anti-slide pile body to a depth of not less than 20 times the rebar diameter, and the third type of rebar installation is inserted into the circular anti-slide pile body to a depth of not less than 40cm.

3. The outer decoration and fender suspension structure of a round anti-slide pile according to claim 1, characterized in that: The decorative concrete layer is a C30 cast-in-place concrete structure, and the cross-sectional shape of the decorative concrete layer is hexagonal prism or octagonal prism.

4. The outer decoration and fender suspension structure of a circular anti-slide pile according to claim 1, characterized in that: It also includes a decorative layer, which is attached to the outer surface of the decorative concrete layer on the side away from the circular anti-slide pile body, and the decorative layer is an embossed layer or a painted layer.

5. The architectural finishing and fender suspension structure for a circular anti- slide pile according to claim 1, wherein: There are no additional connecting parts between the straight retaining plate and the decorative concrete layer. The straight retaining plate forms a close fit and support with the outer surface of the decorative concrete layer by its own weight.

6. The architectural finishing and fender suspension structure for a circular anti- slide pile according to claim 1, wherein: It also includes a rebar adhesive, which fills the gap between the rebar and the implantation hole of the circular anti-slide pile body to enhance the connection strength between the rebar and the circular anti-slide pile body.

7. The architectural finishing and fender suspension structure for a circular anti- slide pile according to claim 1, wherein: The steel cage includes stirrups and reinforcing bars, and the net protective layer thickness between the outer reinforcing bars of the steel cage and the inner wall of the circular anti-slide pile body is not less than 2cm.

8. The architectural finishing and fender suspension structure for a circular anti- slide pile according to claim 1, wherein: The straight retaining plate is equipped with retaining plate reinforcement inside.

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