Multi-stage embedded pile and frame pile combined structure for reinforcing landslide

Abstract

The utility model discloses a multistage embedded pile and frame pile combined structure for reinforcing a landslide, which comprises at least four rows of slide-resistant piles, the at least four rows of slide-resistant piles comprise at least two rows of single embedded piles, at least two rows of portal type embedded piles and at least two rows of frame type embedded piles which are sequentially arranged along the slope direction of a slope surface from high to low, and the frame type embedded piles are arranged along the slope direction of the slope surface from high to low. The first pile body and the second pile body are sequentially arranged from high to low in the slope direction of the slope surface, and the first beam body is connected with the first pile body and the second pile body. The third pile body and the fourth pile body are sequentially arranged from high to low in the slope direction of the slope surface, and the second beam bodies are connected with the third pile body and the fourth pile body and are arranged at intervals from top to bottom. A combined system formed by the reinforcing structure and the slope body is large in overall rigidity, high in deformation resistance and high in anti-sliding bearing capacity, the safety and stability requirements of a long sliding surface and a high-thrust landslide after reinforcement can be met, and deformation of the slope body can be effectively limited.

Description

Technical Field

[0001] This utility model relates to the technical field of landslide reinforcement engineering, and more specifically, to a multi-stage buried pile and frame pile combination structure for reinforcing landslides. Background Technology

[0002] Long landslides are a common potential geological hazard in mountainous engineering projects. These landslides are characterized by long sliding surfaces, thick sliding masses, and large thrust. The treatment of such large landslides generally employs a tiered approach along the sliding direction, from high to low, using methods such as multi-stage anti-slide pile structures and multi-stage anchoring structures. Anti-slide pile structures are typically made of reinforced concrete and offer advantages such as strong adaptability to geological environments and high durability. In contrast, anchoring structures suffer from issues like long-term anchor cable slack and corrosion, resulting in lower long-term reliability compared to reinforced concrete anti-slide pile structures. Therefore, using reinforced concrete anti-slide pile structures to reinforce landslides is often an important measure to ensure the long-term stability of the reinforced slope.

[0003] Traditional anti-slide pile structures for reinforcing long-slip, high-thrust landslides are generally multi-stage (or multi-row) single-row anti-slide pile structures. This involves arranging several levels of single-row anti-slide piles at certain horizontal intervals along the sliding direction of the slope, with each pile in each row being a traditional single pile structure. In this case, on the one hand, because the resistance of a single pile is limited, a large number of stages (such as 6 or more) are often required, increasing both project cost and construction time. On the other hand, the load-bearing section of a single pile is a cantilever beam structure, which may experience significant displacement, especially when the landslide mass is thick. This results in insufficient constraint on the deformation of the reinforced slope, potentially leading to significant deformation under heavy rainfall and strong earthquakes. Therefore, for the reinforcement of long-slip, high-thrust landslides, especially important projects where the stability and deformation of the slope under heavy rainfall and strong earthquakes remain critical, traditional multi-stage single-row anti-slide pile structures are not necessarily suitable, easily exhibiting combined technical and economic drawbacks. A new multi-stage anti-slide pile reinforcement structure is needed to address this problem. Utility Model Content

[0004] The main purpose of this utility model is to provide a multi-stage buried pile and frame pile combination structure for reinforcing landslides, so as to solve the technical problems of the comprehensive defects in technology and economy in the existing technology.

[0005] To achieve the above objectives, this utility model provides a multi-stage buried pile and frame pile combined structure for reinforcing landslides, the technical solution of which is as follows:

[0006] A multi-stage pile and frame pile combination structure for landslide reinforcement includes at least four rows of anti-slide piles. The at least four rows of anti-slide piles include individual piles, portal frame piles, and frame piles arranged sequentially from high to low along the slope direction. The individual piles are arranged in at least two rows along the slope direction. The portal frame piles include a first pile body and a second pile body arranged sequentially from high to low along the slope direction, as well as a first beam body connecting the first pile body and the second pile body. The frame piles include a third pile body and a fourth pile body arranged sequentially from high to low along the slope direction, as well as a second beam body connecting the third pile body and the fourth pile body and arranged at intervals from top to bottom.

[0007] As a further improvement to the aforementioned multi-stage driven pile and frame pile combination structure for reinforcing landslides:

[0008] The vertical distance between the top of the single buried pile and the slope surface is 1 / 5 to 1 / 4 of the vertical thickness of the sliding body;

[0009] The length of the embedded section of the single buried pile is 0.4 to 0.6 times the total length of the single buried pile;

[0010] The cross-section of the single buried pile is rectangular, with the long side set along the slope.

[0011] As a further improvement to the aforementioned multi-stage driven pile and frame pile combination structure for reinforcing landslides:

[0012] The vertical distance between the top of the first pile and the slope is 1 / 5 to 1 / 4 of the vertical thickness of the sliding body;

[0013] The length of the embedded section of the first pile body is 0.3 to 0.5 times the total length of the first pile body;

[0014] The length of the embedded section of the second pile is 0.4 to 0.6 times the total length of the second pile.

[0015] As a further improvement to the above-mentioned multi-stage buried pile and frame pile combination structure for reinforcing landslides: the cross-sections of the first pile and the second pile are rectangular with the long side set along the slope direction, and the cross-section of the first beam is square, with the width of the rectangle being greater than the side length of the square.

[0016] As a further improvement to the aforementioned multi-stage driven pile and frame pile combination structure for reinforcing landslides:

[0017] The tops of the third and fourth piles are located on the slope.

[0018] The length of the embedded section of the third pile is 0.3 to 0.5 times the total length of the third pile.

[0019] The length of the embedded section of the fourth pile is 0.4 to 0.6 times the total length of the fourth pile.

[0020] As a further improvement to the aforementioned multi-stage buried pile and frame pile combination structure for reinforcing landslides: the cross-sections of the third pile, the fourth pile, and the second beam are all square, and the side lengths of the third pile and the fourth pile are greater than the side length of the second beam.

[0021] As a further improvement to the aforementioned multi-stage buried pile and frame pile combination structure for reinforcing landslides: both the first beam and the second beam are located above the sliding surface and are horizontally arranged.

[0022] As a further improvement to the aforementioned multi-stage driven pile and frame pile combination structure for reinforcing landslides:

[0023] One end of the first beam is connected to the top of the second pile, and the other end is connected to the middle of the load-bearing section of the first pile.

[0024] The second beam consists of two parts, with the upper second beam connected to the top of the fourth pile and the lower second beam connected to the middle of the load-bearing section of the fourth pile.

[0025] As a further improvement to the aforementioned multi-stage buried pile and frame pile combination structure for reinforcing landslides: the horizontal length of the first beam and the second beam is 4 to 6 meters.

[0026] As a further improvement to the above-mentioned multi-stage buried pile and frame pile combination structure for reinforcing landslides: the at least four rows of anti-slide piles are arranged with a pile side distance of 8 to 10 meters along the slope direction and a pile side distance of 3 to 5 meters along the slope direction.

[0027] The advantages of the multi-stage buried pile and frame pile combined structure for reinforcing landslides of this utility model are:

[0028] (1) Resisting the thrust of large landslides: Compared with traditional multi-level single-row anti-slide piles, the portal frame type buried piles and frame type buried piles used in this utility model at the lower part of the slope are all combined anti-slide piles, which have a greater anti-slide bearing capacity than single pile structures. Therefore, the combined structure of this utility model can resist landslides with greater thrust.

[0029] (2) Small structural and slope deformation: Compared with traditional multi-level single-row anti-slide piles, the portal frame type buried piles and frame type buried piles used in this utility model at the lower part of the slope have greater overall rigidity and stronger resistance to deformation. Under the same landslide thrust, the deformation constraint effect on the reinforced slope is stronger, and the slope deformation is smaller.

[0030] (3) Good seismic resistance: Compared with traditional multi-level single-row anti-slide piles, the portal frame type buried piles and frame type buried piles used in this utility model at the lower part of the slope have strong structural integrity and strong anti-slide ability, and can withstand the greater landslide thrust generated under strong earthquake action, so that the overall seismic resistance of the reinforced slope is good.

[0031] (4) Material saving: This utility model uses combined anti-slide piles only at the lower part of the slope, while using single buried piles at the higher part, which is conducive to saving pile materials. In particular, the pile tops of single buried piles and gantry-type buried piles are not set on the ground (traditional method), but are buried to a certain depth below the ground by the burial method, which shortens the pile length, further saves material costs, and improves economic efficiency.

[0032] In summary, the graded "single-portal type-frame type-frame type-sinking type" combined anti-slide pile reinforcement structure of this utility model, together with the reinforced slope, forms a composite system with high overall rigidity, strong deformation resistance, and strong anti-slide bearing capacity. It can not only meet the safety and stability requirements of long sliding surfaces and high-thrust landslides after reinforcement, but also effectively limit slope deformation, including reducing the deformation of the anti-slide structure itself. It is not only suitable for engineering reinforcement of long sliding surfaces and high-thrust landslides, but also particularly suitable for projects with high requirements for slope stability and deformation under heavy rainfall and strong earthquake conditions.

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Additional aspects and advantages of the present invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention. Attached Figure Description

[0034] The accompanying drawings, which form part of this utility model, are used to aid in understanding this utility model. The content provided in the drawings and the related descriptions in this utility model can be used to explain this utility model, but do not constitute an undue limitation of this utility model. In the drawings:

[0035] Figure 1 This is a lateral schematic diagram of the multi-stage buried pile and frame pile combination structure for reinforcing landslides according to this utility model.

[0036] Figure 2 This is a frontal schematic diagram of the multi-stage buried pile and frame pile combination structure for reinforcing landslides according to this utility model.

[0037] The relevant markings in the above figures are:

[0038] 110-Slope, 120-Sliding body, 130-Sliding surface, 140-Sliding bed, 200-Single pile, 300-Portal type pile, 310-First pile, 320-Second pile, 330-First beam, 400-Frame type pile, 410-Third pile, 420-Fourth pile, 430-Second beam. Detailed Implementation

[0039] The present invention will now be clearly and completely described in conjunction with the accompanying drawings. Those skilled in the art will be able to implement the present invention based on these descriptions. Before describing the present invention in conjunction with the accompanying drawings, it should be particularly noted that:

[0040] The technical solutions and features provided in the various parts of this utility model, including the following description, can be combined with each other without conflict.

[0041] Furthermore, the embodiments of the present invention described below are generally only a part of the embodiments of the present invention, and not all of the embodiments. Therefore, all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the protection scope of the present invention.

[0042] Regarding the terminology and units used in this utility model: The terms "comprising," "having," and any variations thereof in the specification, claims, and related parts of this utility model are intended to cover non-exclusive inclusion.

[0043] Figure 1 This is a lateral schematic diagram of the multi-stage buried pile and frame pile combination structure for reinforcing landslides according to this utility model. Figure 2 This is a frontal schematic diagram of the multi-stage buried pile and frame pile combination structure for reinforcing landslides according to this utility model.

[0044] like Figure 1 The multi-stage pile and frame pile combination structure for landslide reinforcement shown includes four rows of anti-slide piles, comprising individual piles, portal frame piles, and frame piles arranged sequentially from high to low along the slope direction. Two rows of individual piles are arranged along the slope direction. The landslide structure includes, from top to bottom, a slope surface, a sliding body, a sliding surface, and a sliding bed. The anti-slide piles intersect with the sliding surface.

[0045] The vertical distance between the top of the single buried pile and the slope surface is 1 / 5 of the vertical thickness of the sliding body (along the direction of the central axis of the pile body, the same below); the length L1 of the embedded section of the single buried pile (the distance from the intersection of the center line of the pile body and the sliding surface to the bottom of the pile body, the same below) is 0.5 times the total length of the single buried pile; the cross-section of the single buried pile is rectangular with the long side set along the slope direction, and the cross-sectional size can generally be 2m×3m.

[0046] The portal frame type driven pile includes a first pile body and a second pile body arranged sequentially from high to low along the slope direction, as well as a first beam body connecting the first pile body and the second pile body. The vertical distance between the top of the first pile body and the slope surface is 1 / 5 of the vertical thickness of the sliding body; the embedded section length of the first pile body is 0.4 times the total length of the first pile body; the embedded section length of the second pile body is 0.5 times the total length of the second pile body. The cross-sections of the first and second pile bodies are rectangular with the long side along the slope direction, and the cross-section of the first beam body is square, with the width of the rectangle being greater than the side length of the square. The cross-sectional dimensions of the pile body are generally 2m × 2.5m, and the cross-sectional dimensions of the beam body are generally 1.5m × 1.5m.

[0047] The frame-type driven piles include a third pile and a fourth pile arranged sequentially from high to low along the slope, and a second beam connecting the third and fourth piles and arranged at intervals from top to bottom. The tops of the third and fourth piles are located on the slope surface; the embedded section length of the third pile is 0.4 times the total length of the third pile; the embedded section length of the fourth pile is 0.5 times the total length of the fourth pile. The cross-sections of the third pile, the fourth pile, and the second beam are all square, with the side lengths of the third and fourth piles being greater than the side length of the second beam. The cross-sectional dimensions of the piles are generally 2m × 2m, and the cross-sectional dimensions of the beams are generally 1.25m × 1.25m.

[0048] Both the first and second beams are located above the sliding surface and are horizontally positioned, each with a horizontal length of 5 meters. One end of the first beam is connected to the top of the second pile, and the other end is connected to the middle of the load-bearing section of the first pile. There are two second beams, with the upper second beam connected to the top of the fourth pile and the lower second beam connected to the middle of the load-bearing section of the fourth pile.

[0049] The four rows of anti-slide piles are arranged with a pile edge distance L2 of 9 meters along the slope direction and a pile edge distance L3 of 4 meters along the slope direction. The piles are arranged either vertically aligned or staggered.

[0050] The foregoing has described the relevant content of this utility model. Those skilled in the art will be able to implement this utility model based on these descriptions. All other embodiments obtained by those skilled in the art based on the above description of this utility model without inventive effort should fall within the protection scope of this utility model.

Claims

1. A multi-stage driven pile and frame pile combined structure for landslide reinforcement, characterized in that: It includes at least four rows of anti-slide piles, which include single-unit buried piles, portal frame type buried piles and frame type buried piles arranged in descending order along the slope direction. Among them, at least two rows of single-unit buried piles are arranged along the slope direction. The gantry-type buried pile includes a first pile body and a second pile body arranged sequentially from high to low along the slope direction, as well as a first beam body connecting the first pile body and the second pile body; The frame-type buried pile includes a third pile body and a fourth pile body arranged sequentially from high to low along the slope direction, as well as a second beam body connecting the third pile body and the fourth pile body and arranged at intervals from top to bottom.

2. The multi-stage buried pile and frame pile combined structure for reinforcing landslides as described in claim 1, characterized in that: The vertical distance between the top of the single buried pile and the slope surface is 1 / 5 to 1 / 4 of the vertical thickness of the sliding body; The length of the embedded section of the single buried pile is 0.4 to 0.6 times the total length of the single buried pile; The cross-section of the single buried pile is rectangular, with the long side set along the slope.

3. The multi-stage driven pile and frame pile combination structure for landslide reinforcement as described in claim 1, characterized in that: The vertical distance between the top of the first pile and the slope is 1 / 5 to 1 / 4 of the vertical thickness of the sliding body; The length of the embedded section of the first pile body is 0.3 to 0.5 times the total length of the first pile body; The length of the embedded section of the second pile is 0.4 to 0.6 times the total length of the second pile.

4. The multi-stage driven pile and frame pile combination structure for landslide reinforcement as described in claim 1, characterized in that: The first and second piles have rectangular cross-sections with their long sides oriented along the slope. The first beam has a square cross-section, with the width of the rectangle being greater than the side length of the square.

5. The multi-stage driven pile and frame pile combination structure for landslide reinforcement as described in claim 1, characterized in that: The tops of the third and fourth piles are located on the slope. The length of the embedded section of the third pile is 0.3 to 0.5 times the total length of the third pile. The length of the embedded section of the fourth pile is 0.4 to 0.6 times the total length of the fourth pile.

6. The multi-stage buried pile and frame pile combined structure for reinforcing landslides as described in claim 1, characterized in that: The cross-sections of the third pile, the fourth pile, and the second beam are all square, and the side lengths of the third pile and the fourth pile are greater than the side length of the second beam.

7. The multi-stage buried pile and frame pile combined structure for landslide reinforcement as described in claim 1, characterized in that: Both the first beam and the second beam are located above the sliding surface and are horizontally positioned.

8. The multi-stage buried pile and frame pile combined structure for reinforcing landslides as described in claim 7, characterized in that: One end of the first beam is connected to the top of the second pile, and the other end is connected to the middle of the load-bearing section of the first pile. The second beam consists of two parts, with the upper second beam connected to the top of the fourth pile and the lower second beam connected to the middle of the load-bearing section of the fourth pile.

9. The multi-stage buried pile and frame pile combined structure for reinforcing landslides as described in claim 7, characterized in that: The horizontal length of the first beam and the second beam is 4 to 6 meters.

10. The multi-stage driven pile and frame pile combination structure for landslide reinforcement as described in claim 1, characterized in that: The at least four rows of anti-slide piles are arranged with a pile-to-pile distance of 8 to 10 meters along the slope direction and a pile-to-pile distance of 3 to 5 meters along the slope direction.

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