A rigidity-adjustable bow-type steel pipe concrete anti-slide pile supporting structure

Abstract

The utility model discloses a kind of stiffness-adjustable bow type steel pipe concrete anti-slide pile supporting structures, it is related to landslide control technical field, including anti-slide pile body steel pipe, anti-slide pile body steel pipe has anti-slide pile pipe body concrete and is poured in, anti-slide pile body steel pipe has anti-slide pile pipe outer concrete protection layer and is poured outside;The inner wall of anti-slide pile body steel pipe is provided with the stiffness-adjustable bow type steel plate structure, by the anti-slide pile body steel pipe and 120 degrees bow type steel plate, 90 degrees bow type steel plate and 60 degrees bow type steel plate of being set, when needing to adjust the overall stiffness of anti-slide pile, according to the stress condition of different parts of landslide body, 120 degrees bow type steel plate, 90 degrees bow type steel plate and 60 degrees bow type steel plate of different angle are selected and utilize I type high-strength bolt group, II type high-strength bolt group and III type high-strength bolt group to carry out assembly connection, not only improve the bearing capacity and stability of anti-slide pile, also enhance its adaptability to complex landslide body.

Description

Technical Field

[0001] This utility model relates to the field of landslide control technology, specifically to an adjustable stiffness arch-type steel-concrete anti-slide pile support structure. Background Technology

[0002] Landslides, a common geological hazard, seriously threaten people's lives and property and the stable operation of infrastructure. Anti-slide piles, as an effective landslide control measure, are widely used in various landslide control projects due to their simple structure, convenient construction, and high bearing capacity.

[0003] Traditional anti-slide pile structures are mostly reinforced concrete structures, and most have rectangular cross-sections. In actual construction, rectangular piles are either drilled manually or using modified mechanical drilling methods, which are quite difficult and pose safety hazards. After drilling, a reinforcing cage needs to be tied before the concrete structure is poured in layers, resulting in a long construction period. However, landslide treatment projects are generally time-sensitive, and traditional anti-slide piles cannot meet the urgency and safety requirements of landslide treatment.

[0004] In view of the above, this patent adopts a circular steel-concrete composite pipe structure. Drilling can be performed quickly using a rotary drilling rig. An adjustable-stiffness "arch-shaped" steel plate structure is installed on the inner wall of the steel pipe according to the stress conditions. The steel plate is connected to the inner wall of the steel pipe by high-strength bolts. Assembly can be completed in the factory. After hoisting on the construction site, the pipe body concrete and the outer concrete protective layer are poured to complete the anti-slide pile construction. Implementing the anti-slide pile structure according to this patent results in a short construction period for drilling, assembly, and pouring. Most of the construction is done mechanically, reducing manual labor input. While ensuring construction progress and quality, it improves the safety of landslide treatment. Therefore, based on the above research and combined with existing technology, a stiffness-adjustable arch-shaped steel-concrete composite pipe anti-slide pile support structure is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a rigidity-adjustable arch-type steel-concrete composite anti-slide pile support structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An adjustable stiffness arch-type steel-concrete composite anti-slide pile support structure includes: an anti-slide pile body steel pipe, wherein anti-slide pile body concrete is poured inside the anti-slide pile body steel pipe, and an anti-slide pile body steel pipe outer concrete protective layer is poured outside the anti-slide pile body steel pipe.

[0008] The inner wall of the anti-slide pile body steel pipe is provided with an adjustable stiffness arched steel plate structure, which includes 120-degree arched steel plates, 90-degree arched steel plates and 60-degree arched steel plates.

[0009] The 120-degree bow-shaped steel plate, the 90-degree bow-shaped steel plate, and the 60-degree bow-shaped steel plate are connected to the inner wall of the anti-slide pile body steel pipe through a group of Type I high-strength bolts, a group of Type II high-strength bolts, and a group of Type III high-strength bolts.

[0010] The anti-slide pile steel pipe is installed in the landslide body, and the landslide body is located below the sliding bed.

[0011] Furthermore, the inner wall of the anti-slide pile body steel pipe is connected to the 120-degree arched steel plate, the 90-degree arched steel plate, and the 60-degree arched steel plate by a group of Type I high-strength bolts, a group of Type II high-strength bolts, and a group of Type III high-strength bolts.

[0012] Furthermore, the concrete of the anti-slide pile body poured inside the steel pipe of the anti-slide pile body is tightly bonded to the bow-shaped steel plate structure, and the thickness of the concrete protective layer of the anti-slide pile body outside the steel pipe of the anti-slide pile body is 10-20cm.

[0013] Furthermore, the thickness of the 120-degree bow-shaped steel plate, the 90-degree bow-shaped steel plate, and the 60-degree bow-shaped steel plate is 10-20 mm. The surfaces of the 120-degree bow-shaped steel plate, the 90-degree bow-shaped steel plate, and the 60-degree bow-shaped steel plate are coated with an anti-corrosion coating, which is an epoxy resin coating with a thickness of 0.5-1 mm.

[0014] Furthermore, a connecting flange is provided at the top of the anti-slide pile body steel pipe, which is used to connect multiple anti-slide pile body steel pipes into a whole.

[0015] Furthermore, the anti-slide pile body steel pipe is installed in the landslide body, and the slide bed is located below the landslide body. The anti-slide pile body steel pipe is tightly bonded to the landslide body and the slide bed through the concrete protective layer outside the anti-slide pile pipe.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. By using steel pipes for the anti-slide pile body and 120-degree, 90-degree, and 60-degree arched steel plates, when it is necessary to adjust the overall stiffness of the anti-slide pile, different angles of 120-degree, 90-degree, and 60-degree arched steel plates can be selected according to the stress conditions of different parts of the landslide body. These plates are then assembled and connected using Type I, Type II, and Type III high-strength bolt groups. This not only improves the bearing capacity and stability of the anti-slide pile but also enhances its adaptability to complex landslide bodies, ensuring the safety and reliability of the landslide site. At the same time, the stiffness configuration can be quickly adjusted according to actual needs during construction, improving construction efficiency. Attached Figure Description

[0018] Figure 1This is a cross-sectional view of the low-stiffness arch-type steel-concrete anti-slide pile of this utility model.

[0019] Figure 2 This is a cross-sectional view of the medium-stiffness arch-type steel-concrete anti-slide pile of this utility model;

[0020] Figure 3 This is a cross-sectional view of the high-rigidity arch-type steel-concrete anti-slide pile of this utility model;

[0021] Figure 4 This is a cross-sectional view (AA) of the high-rigidity arch-shaped steel-concrete anti-slide pile of this utility model.

[0022] Figure 5 This is a cross-sectional view of the high-rigidity arch-type steel-concrete anti-slide pile body of this utility model.

[0023] In the diagram: 1. Steel pipe of the anti-slide pile body; 2. Concrete of the anti-slide pile body; 3. Concrete protective layer outside the anti-slide pile pipe; 4. 120-degree arched steel plate; 5. 90-degree arched steel plate; 6. 60-degree arched steel plate; 7. Type I high-strength bolt group; 8. Type II high-strength bolt group; 9. Type III high-strength bolt group; 10. Landslide body; 11. Slide bed. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In one typical embodiment of this application, please refer to Figures 1-5 An adjustable stiffness arch-type steel-concrete composite anti-slide pile support structure includes an anti-slide pile body steel pipe 1, an anti-slide pile body concrete 2 poured inside the anti-slide pile body steel pipe 1, and an anti-slide pile body concrete protective layer 3 poured outside the anti-slide pile body steel pipe 1.

[0026] The inner wall of the anti-slide pile body steel pipe 1 is provided with an adjustable stiffness arched steel plate structure, which includes a 120-degree arched steel plate 4, a 90-degree arched steel plate 5 and a 60-degree arched steel plate 6.

[0027] The 120-degree arched steel plate 4, the 90-degree arched steel plate 5, and the 60-degree arched steel plate 6 are connected to the inner wall of the anti-slide pile body steel pipe 1 by the type I high-strength bolt group 7, the type II high-strength bolt group 8, and the type III high-strength bolt group 9.

[0028] The anti-slide pile body steel pipe 1 is installed in the landslide body 10, and the landslide body 10 is below the sliding bed 11;

[0029] By adjusting the quantity and arrangement of the 120-degree arched steel plate 4, the 90-degree arched steel plate 5, and the 60-degree arched steel plate 6, the overall stiffness of the anti-slide piles can be adjusted to meet the needs of landslide treatment under different stress conditions, improve the bearing capacity and stability of the anti-slide piles, and ensure the safety and reliability of landslide treatment.

[0030] In this method, the landslide 10 is set up, and the stress situation of the landslide body 10 is complex and diverse. The magnitude and direction of the stress in different parts are different. By setting 120-degree bow steel plates 4, 90-degree bow steel plates 5 and 60-degree bow steel plates 6 at different angles on the inner wall of the anti-slide pile body steel pipe 1, and flexibly adjusting their quantity and arrangement according to the actual stress situation, the anti-slide pile can better adapt to the complex stress environment of the landslide body 10, effectively disperse and resist the thrust of the landslide body 10, and avoid damage or failure of the anti-slide pile due to excessive local stress.

[0031] The combination of the bow-shaped steel plate structure and the steel pipe 1 of the anti-slide pile body forms a support structure similar to a "skeleton", which significantly enhances the overall rigidity and bearing capacity of the anti-slide pile. Under the thrust of the landslide body 10, the anti-slide pile can withstand a greater load, effectively preventing the further sliding of the landslide body 10 and ensuring the safety and stability of the landslide treatment project.

[0032] The arched steel plate is connected to the anti-slide pile body steel pipe 1 using Type I high-strength bolt group 7, Type II high-strength bolt group 8, and Type III high-strength bolt group 9, making the assembly process of the anti-slide pile more convenient and efficient. At the construction site, construction personnel can quickly complete the installation and adjustment of the arched steel plate according to design requirements, without the need for complex welding or binding processes, greatly shortening the construction period and improving construction efficiency. This is especially suitable for landslide treatment projects with high requirements for construction progress.

[0033] By rationally adjusting the number and arrangement of the arched steel plates, anti-slide piles can achieve precise adjustment of stiffness, ensuring good working performance under different stress conditions, effectively reducing landslide risks, ensuring the safety and reliability of landslide treatment projects, and providing strong protection for the safety of people's lives and property and the stable operation of infrastructure.

[0034] The inner wall of the anti-slide pile body steel pipe 1 is connected to the 120-degree arched steel plate 4, the 90-degree arched steel plate 5 and the 60-degree arched steel plate 6 by a type I high-strength bolt group 7, a type II high-strength bolt group 8 and a type III high-strength bolt group 9. The high-strength bolt group is connected by bolts to ensure the firmness and reliability of the connection.

[0035] The length directions of the 120-degree bow steel plate 4, the 90-degree bow steel plate 5, and the 60-degree bow steel plate 6 are consistent with the length direction of the anti-slide pile body steel pipe 1. By adjusting the number and arrangement of the bow steel plates at different angles, the gradient adjustment of the overall stiffness of the anti-slide pile can be achieved, thereby improving the bearing capacity of the anti-slide pile in different stress areas and adapting to the complex stress conditions of the landslide body 10.

[0036] The arched steel plates at different angles are connected to the anti-slide pile body steel pipe 1 using Type I high-strength bolt groups 7, Type II high-strength bolt groups 8, and Type III high-strength bolt groups 9, respectively. When assembling anti-slide piles, appropriate bolt groups can be selected for connection based on the angle and stress conditions of the arched steel plates. This connection method not only ensures a firm and reliable connection between the arched steel plates and the anti-slide pile body steel pipe 1, enabling them to withstand the large thrust of the landslide body 10, but also facilitates assembly in the processing plant, improving construction efficiency and quality. Furthermore, different types of high-strength bolt groups can be flexibly selected and replaced according to actual needs, further enhancing the adaptability and adjustability of the anti-slide pile structure.

[0037] In this method, the stress distribution of anti-slide piles is usually uneven in actual use, with the maximum stress in the middle and the stress gradually decreasing at both ends. By arranging the 120-degree arched steel plates 4 along the entire length, the 90-degree arched steel plates 5 at 75% of the pile length, and the 60-degree arched steel plates 6 at 50% of the pile length, the stiffness of the anti-slide piles can exhibit a gradient change along the length direction, with the maximum stiffness in the middle and the stiffness gradually decreasing at both ends. This gradient stiffness design matches the stress distribution of the landslide body 10, allowing the anti-slide piles to exert optimal bearing capacity in all parts and avoiding local stress concentration and structural damage caused by stiffness mismatch.

[0038] This gradient stiffness arrangement effectively optimizes the stress performance of the anti-slide piles, making the stress distribution more uniform and reasonable when the anti-slide piles are subjected to the thrust of the landslide body 10. In the middle, a large number of "bow-shaped" steel plates can provide strong stiffness support, effectively resisting the large thrust and preventing the anti-slide piles from bending and deforming. At both ends, the number and length of the "bow-shaped" steel plates are appropriately reduced, which can ensure sufficient bearing capacity without making the structure too rigid due to excessive stiffness, thereby improving the overall stability and adaptability of the anti-slide piles and enabling them to better adapt to the complex stress conditions of the landslide body 10.

[0039] The anti-slide pile body concrete 2, which is poured inside the steel pipe 1 of the anti-slide pile body, is tightly integrated with the arched steel plate structure to form a steel pipe concrete structure. The strength grade of the anti-slide pile body concrete 2 is C50 or above, to ensure the bearing capacity and stiffness of the anti-slide pile.

[0040] The thickness of the concrete protective layer 3 cast outside the steel pipe 1 of the anti-slide pile is 10-20cm. The concrete protective layer 3 outside the anti-slide pile can provide additional protection for the steel pipe 1 of the anti-slide pile, prevent the steel pipe from being affected by the external environment, and at the same time increase the overall rigidity and stability of the anti-slide pile, and improve the durability and bearing capacity of the anti-slide pile.

[0041] In this method, the concrete protective layer 3 outside the anti-slide pile pipe effectively prevents the steel pipe 1 of the anti-slide pile from being affected by the external environment, such as rainwater erosion, groundwater erosion, and soil corrosion. This protective layer is equivalent to putting a "protective suit" on the anti-slide pile, reducing the direct damage to the steel pipe from external factors, extending the service life of the anti-slide pile, and significantly increasing the overall stiffness of the anti-slide pile. Under the thrust of the landslide body 10, this additional stiffness can effectively resist the thrust of the landslide body 10 and prevent the anti-slide pile from bending and deforming.

[0042] The thickness of the 120-degree bow-shaped steel plate 4, the 90-degree bow-shaped steel plate 5, and the 60-degree bow-shaped steel plate 6 is 10-20mm. The material of the 120-degree bow-shaped steel plate 4, the 90-degree bow-shaped steel plate 5, and the 60-degree bow-shaped steel plate 6 is Q345 high-strength steel and the surface is coated with an anti-corrosion coating. The anti-corrosion coating is an epoxy resin coating with a thickness of 0.5-1mm.

[0043] The anti-corrosion coating can effectively prevent the arch steel plate from being corroded during construction and use, extend the service life of the anti-slide pile, and improve the durability and safety of the anti-slide pile.

[0044] In this method, the anti-corrosion coating can form a dense protective film, effectively isolating the steel pipe and arch steel plate from contact with air, moisture and corrosive substances, preventing them from oxidizing and corroding. In landslide treatment projects, anti-slide piles are often in humid, watery or even corrosive environments. This anti-corrosion coating can significantly improve the durability of anti-slide piles.

[0045] The anti-corrosion coating not only protects the steel pipe 1 of the anti-slide pile and the arched steel plate, but also indirectly improves the stability of the entire anti-slide pile support structure. Under the long-term action of the landslide body 10, the structural integrity of the anti-slide pile is maintained, and it can continuously and effectively resist the thrust of the landslide body 10, ensuring the safety and reliability of the landslide treatment project.

[0046] The top of the anti-slide pile body steel pipe 1 is provided with a connecting flange. The connecting flange is used to connect multiple anti-slide pile body steel pipes 1 into a whole to form a larger support structure to meet the needs of landslide treatment of different scales.

[0047] The flange is connected by bolts, and high-strength bolts are used to ensure the firmness and reliability of the connection and improve the overall stability of the anti-slide pile.

[0048] In this method, the connecting flanges allow multiple anti-slide piles to be connected into a single unit, forming a larger support structure. In landslide treatment projects, this integration effectively improves the bearing capacity and stability of the anti-slide pile support system, enabling it to better resist the thrust of the landslide mass 10. Multiple anti-slide piles connected by the connecting flanges can work together to form a coordinated support system, enhancing the restraint effect on the landslide mass 10.

[0049] The anti-slide pile body steel pipe 1 is installed in the landslide body 10. Below the landslide body 10 is the sliding bed 11. The anti-slide pile body steel pipe 1 is tightly connected to the landslide body 10 and the sliding bed 11 through the concrete protective layer 3 outside the anti-slide pile pipe, forming a stable support system.

[0050] The stiffness adjustment function of the anti-slide pile can be optimized according to different stress areas of the landslide body 10, ensuring that the anti-slide pile provides high stiffness support when the stress in the middle of the landslide body 10 is large, and provides medium or low stiffness support when the stress on both sides and the edges of the landslide body 10 is small, thereby achieving effective support for the landslide body 10, reducing the risk of landslide, and ensuring the safety and reliability of the landslide site.

[0051] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A rigidity-adjustable arch-type steel-concrete composite anti-slide pile support structure, characterized in that, include: The anti-slide pile body steel pipe (1) is filled with anti-slide pile body concrete (2) and the anti-slide pile body steel pipe (1) is filled with an anti-slide pile pipe outer concrete protective layer (3). The inner wall of the anti-slide pile body steel pipe (1) is provided with an adjustable stiffness bow-shaped steel plate structure, which includes a 120-degree bow-shaped steel plate (4), a 90-degree bow-shaped steel plate (5) and a 60-degree bow-shaped steel plate (6). The 120-degree bow-shaped steel plate (4), the 90-degree bow-shaped steel plate (5), and the 60-degree bow-shaped steel plate (6) are connected to the inner wall of the anti-slide pile body steel pipe (1) by a type I high-strength bolt group (7), a type II high-strength bolt group (8), and a type III high-strength bolt group (9). The anti-slide pile body steel pipe (1) is installed in the landslide body (10), and the landslide body (10) is located below the sliding bed (11).

2. The adjustable stiffness arch-type steel-concrete composite anti-slide pile support structure according to claim 1, characterized in that: The inner wall of the anti-slide pile body steel pipe (1) is connected to the 120-degree arched steel plate (4), the 90-degree arched steel plate (5) and the 60-degree arched steel plate (6) by a type I high-strength bolt group (7), a type II high-strength bolt group (8) and a type III high-strength bolt group (9).

3. The adjustable stiffness arch-type steel-concrete composite anti-slide pile support structure according to claim 2, characterized in that: The anti-slide pile body concrete (2) poured inside the anti-slide pile body steel pipe (1) is tightly integrated with the bow-shaped steel plate structure, and the thickness of the anti-slide pile body steel pipe outer concrete protective layer (3) poured outside the anti-slide pile body steel pipe (1) is 10-20cm.

4. The adjustable stiffness arch-type steel-concrete composite anti-slide pile support structure according to claim 3, characterized in that: The thickness of the 120-degree bow-shaped steel plate (4), the 90-degree bow-shaped steel plate (5), and the 60-degree bow-shaped steel plate (6) is 10-20 mm. The surfaces of the 120-degree bow-shaped steel plate (4), the 90-degree bow-shaped steel plate (5), and the 60-degree bow-shaped steel plate (6) are coated with an anti-corrosion coating. The anti-corrosion coating is an epoxy resin coating with a thickness of 0.5-1 mm.

5. The adjustable stiffness arch-type steel-concrete composite anti-slide pile support structure according to claim 4, characterized in that: The top of the anti-slide pile body steel pipe (1) is provided with a connecting flange, which is used to connect multiple anti-slide pile body steel pipes (1) into a whole.

6. The adjustable stiffness arch-type steel-concrete composite anti-slide pile support structure according to claim 5, characterized in that: The anti-slide pile body steel pipe (1) is installed in the landslide body (10), and the slide bed (11) is located below the landslide body (10). The anti-slide pile body steel pipe (1) is tightly connected to the landslide body (10) and the slide bed (11) through the concrete protective layer (3) outside the anti-slide pile pipe.

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