Stress pile for embankment and retaining wall

Abstract

The utility model relates to a stress pile for an embankment and a retaining wall. The stress pile comprises a pile body provided with a cavity, and the pile body comprises a soil facing part constructed to be arranged on a soil facing face; the upstream part is constructed to be capable of being arranged on an upstream face; the two connecting plates are arranged on the two sides of the pile body respectively; the length of the stress pile is L, the maximum distance between the soil facing part and the water facing part of the pile body in the length direction perpendicular to the stress pile is H, and the value range of the ratio of L to H is 1.5 H < = L < = 2.5 H. The pile body is arranged to be the stress main body of the closed structure, the pile body is provided with the cavity, the pile body is connected through the connecting plate, the integrity is good, the mechanical property is good, the manufacturing cost is lower, construction is more convenient and rapid, and the soil squeezing effect between the connected piles can be reduced.

Description

Technical Field

[0001] The utility model generally relates to the field of water conservancy projects, and more specifically, to a force-bearing pile and retaining wall for embankments. The utility model can be used for river bank protection, embankment protection, embankment retaining, foundation pit support for construction projects, and the like. Background Art

[0002] Bank protection refers to the engineering measures of artificial reinforcement on the original water bank slope to prevent the invasion and scouring of waves, water flow and groundwater and maintain the stability of the coastline.

[0003] The prior art discloses imitation wood piles for bank protection, such as rectangular piles, continuously arranged piles, plastic steel sheet piles, etc. These imitation wood piles use a lot of raw materials, resulting in high cost, insufficient overall structural stability, and great construction difficulty.

[0004] In addition, it has been found in the actual construction process that in the backfilling stage after the pile plate is constructed, the displacement phenomenon caused by backfilling of H-type force piles is prone to occur in places with poor local soil quality. For this reason, a curved panoramic wall is disclosed in the Chinese utility model patent CN215829353U, in which the arc-shaped connecting plate that is stressed by the H-type force piles (the piles are deeper in the soil) plays a role in connection and force transmission. The arc-shaped connecting plate is shorter, which plays a role in saving construction costs. Its force model is that the soil pressure acts on the arched surface of the connecting plate, and then is transmitted to the H-type force piles through the arched connecting plate. Therefore, during the overall calculation, only the force transmission effect of the connecting plate is considered, and it does not participate in the force calculation of the system, but only the force of the H-type force piles is calculated based on the fixed pile spacing and insertion depth. However, the limitation of this structure is that once it encounters a embankment environment with poor soil quality, the entire retaining wall is prone to instability, causing displacement of the force piles. Moreover, due to the influence of construction conditions and geological conditions, the construction accuracy of H-type load-bearing piles is difficult to meet. When the spacing error is large, it increases the difficulty of inserting the arc-shaped connecting plate later.

[0005] In addition, it has been found in actual construction that continuously arranged piles (with equal depth of penetration) have better structural integrity. For example, Chinese utility model patent CN213389968U discloses an ecological landscape revetment, in which continuous pile locks are connected to play a role of common force, and the stiffness per unit meter is also increased. It is also found in actual engineering cases that this form is more stable and has better integrity than CN215829353U. However, because its structure is a closed structure, the material consumption is high, the cost has no obvious advantage, and the continuously arranged closed structure is prone to soil squeezing effect.

[0006] In addition, the existing technical solutions also disclose plastic steel sheet piles of single-layer folded plate structures, in which, in order to overcome the structural instability, concrete piles or polymer piles are inserted into the continuous folded plate structure as load-bearing piles (such as CN208151964U and CN216948101 U). However, although this enhances the strength and stability of the structure, it does not have outstanding performance in terms of construction difficulty, molding effect and cost advantage. Utility Model Content

[0007] In view of some or all of the problems in the prior art, the utility model aims to provide a force-bearing pile for embankments, comprising:

[0008] A pile body having a cavity, wherein the pile body comprises:

[0009] a soil facing portion configured to be arranged on a soil facing surface; and

[0010] a water-facing portion configured to be arranged on a water-facing surface; and

[0011] Two connecting plates, which are respectively arranged on both sides of the pile body;

[0012] The length of the stressed pile is L, and the maximum distance between the soil facing part and the water facing part of the pile body in a direction perpendicular to the length of the stressed pile is H, wherein the ratio between L and H is in the range of 1.5H≤L≤2.5H.

[0013] Furthermore, the value range of H is 100mm≤H≤380mm.

[0014] Furthermore, the maximum distance between two sides of the pile body in the length direction of the load-bearing pile is B, wherein the ratio of B to H is in the range of 0.6H≤B≤2H.

[0015] Furthermore, the load-bearing pile further comprises:

[0016] A locking structure comprises a connecting lock slot and a connecting lock buckle, wherein the connecting lock buckle has a lock head capable of cooperating with the connecting lock slot, and wherein the connecting lock buckle is constructed to be capable of rotating or moving relative to the connecting lock slot.

[0017] Furthermore, the connecting lock groove has a lock cavity with a C-shaped cross section, and the connecting lock buckle has a lock head with a circular cross section that can be movably connected to the C-shaped lock cavity.

[0018] Furthermore, the pile body and the connecting plate are integrally formed.

[0019] Furthermore, the pile body and / or the connecting plate are made of polymer material.

[0020] Further, the cavity of the pile body is configured to accommodate landscape plants; and / or

[0021] A water filter layer is provided in the cavity of the pile body; and / or

[0022] The cavity of the pile body is configured to allow a planting frame to be hung externally.

[0023] Furthermore, the cross-sectional shape of the cavity of the pile body is one of the following or a combination thereof: circular, elliptical, triangular, and polygonal.

[0024] The utility model also provides a retaining wall for a embankment, which is formed by connecting a plurality of the load-bearing piles in sequence.

[0025] Compared with the prior art, the utility model has at least the following beneficial effects:

[0026] 1. The load-bearing pile provided by the utility model sets the pile body as a load-bearing main body of a closed structure, thereby enhancing the integrity and mechanical properties of the pile plate.

[0027] 2. The pile body provided by the utility model is provided with a cavity in the middle, which can save raw materials and has an advantage in cost.

[0028] 3. The utility model connects the connected piles through the connecting lock groove and the connecting lock buckle, and the connecting lock buckle can be rotated or moved relative to the connecting lock groove, which makes the construction more convenient.

[0029] 4. The utility model utilizes the principle of soil arch effect of the soil between piles, arranges connecting plates on both sides of the piles, selects appropriate component proportions and / or size ranges, and the soil arch effect causes the soil pressure to be transferred to the main pile, while the force on the connecting plates on both sides reaches the minimum state.

[0030] 5. The utility model connects the pile bodies via the connecting plates, which can reduce the soil squeezing effect between the connected piles. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] To further illustrate the above and other advantages and features of various embodiments of the present invention, a more specific description of various embodiments of the present invention will be presented with reference to the accompanying drawings. It will be understood that these drawings only depict typical embodiments of the present invention and are therefore not to be considered as limiting the scope thereof. In the accompanying drawings, for clarity, identical or corresponding components will be represented by identical or similar reference numerals.

[0032] Figure 1 A schematic diagram of the soil arching effect is shown;

[0033] Figure 2 A schematic diagram showing the influence of soil arching effect on the load-bearing body of a closed structure;

[0034] Figure 3a The structure schematic diagram of the first embodiment of the force-bearing pile of the utility model is shown;

[0035] Figure 3b It shows a schematic structural diagram of the connection between the connection lock groove and the connection lock buckle of the first embodiment of the force-bearing pile of the utility model;

[0036] Figure 3c A schematic diagram of the connection structure of a first embodiment of a force-bearing pile of the utility model is shown;

[0037] Figure 4 A schematic diagram of the connection structure of a second embodiment of a force-bearing pile of the utility model is shown;

[0038] Figure 5 A schematic diagram of the connection structure of a third embodiment of a force-bearing pile of the utility model is shown;

[0039] Figure 6 A schematic diagram of the connection structure of a fourth embodiment of a force-bearing pile of the utility model is shown;

[0040] Figure 7 A schematic diagram of the three-dimensional structure of a force-bearing pile according to an embodiment of the utility model is shown;

[0041] Figure 8 A schematic diagram showing dimensions according to an embodiment of the present invention; and

[0042] Fig. 9 A schematic structural diagram of placing an object in a pile body cavity of a stressed pile according to an embodiment of the utility model is shown. DETAILED DESCRIPTION

[0043] In the following description, the utility model is described with reference to various embodiments. However, those skilled in the art will recognize that the various embodiments can be implemented without one or more specific details or with other replacement and / or additional methods or components. In other cases, well-known structures or operations are not shown or described in detail to avoid blurring the utility model points of the utility model. Similarly, for the purpose of explanation, specific numbers and configurations are set forth in order to provide a comprehensive understanding of the embodiments of the utility model. However, the utility model is not limited to these specific details. In addition, it should be understood that the various embodiments shown in the drawings are illustrative representations and are not necessarily drawn in correct proportions.

[0044] In the present invention, reference to "one embodiment" or "the embodiment" means that a particular feature, structure or characteristic described in conjunction with the embodiment is included in at least one embodiment of the present invention. The phrase "in one embodiment" appearing in various places in the present invention does not necessarily refer to the same embodiment.

[0045] In the present invention, unless otherwise specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration, unless otherwise specified. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the present invention, the words "same", "equal", "equal to" and the like do not mean that the values ​​of the two are absolutely equal, but allow a certain reasonable error, that is, the words also cover "substantially the same", "substantially equal", "substantially equal to". By analogy, in the present invention, the terms "perpendicular to", "parallel to" and the like indicating direction also cover the meaning of "substantially perpendicular to" and "substantially parallel to".

[0047] The utility model provides a load-bearing pile for a embankment, in which the pile body is arranged as a load-bearing main body with a closed structure, the integrity of the pile plate is enhanced, a cavity is arranged in the middle of the pile body, raw materials can be saved, and the pile bodies are connected by connecting plates, so that the soil squeezing effect between the connected piles can be reduced.

[0048] In the present invention, the term "polymer material" refers to polymer materials, including, for example, plastics, rubber, and fibers.

[0049] In the present invention, the term "water facing surface" refers to the side of the water body close to the embankment, and the term "soil facing surface" refers to the side of the soil close to the embankment.

[0050] In the present utility model, the concepts such as "length" and "length direction" of the load-bearing pile shall be based on the markings in the drawings and the corresponding text descriptions.

[0051] The solution of the utility model is further described below in conjunction with the accompanying drawings of the embodiments.

[0052] Figure 1A schematic diagram of the soil arch effect is shown. In the field of soil mechanics, soil arch is a phenomenon used to describe stress transfer, which is achieved by exerting the shear strength of the soil. Terzaghi confirmed the existence of the soil arch effect through a sliding door test in 1936. The soil arch effect refers to the phenomenon that the soil pressure behind the wall increases locally when the support stiffness is large and the surrounding structure stiffness is small. The local soil moves while the rest remains in its original position. This relative movement in the soil is resisted by the shear strength of the soil, which reduces the pressure on the moving part of the soil and increases the pressure on the immobile part. The reason for the formation of the soil arch is that under the action of load or deadweight, the soil is compressed and deformed, resulting in uneven displacement, causing the soil particles to "wedge" each other, thus generating a "soil arch effect" in a certain range of soil layers. In short, in the present utility model, "the soil arch effect generated by the load-bearing pile" means that the support stiffness of the load-bearing pile is greater than the stiffness of the surrounding structure.

[0053] Figure 2 The schematic diagram shows the influence of soil arching effect on the load-bearing body of a closed structure. Figure 2 As shown, the pile bodies 201, i.e. the closed load-bearing bodies, are arranged at intervals. Due to the existence of the soil arch effect, the part of the closed load-bearing body facing the soil surface, i.e. the soil-facing part, is subjected to greater pressure, while the part between the closed load-bearing bodies, i.e. the connecting plate, is subjected to less pressure. Therefore, only a connecting plate of lower strength is needed to play a soil retaining role.

[0054] Figure 3a The structural schematic diagram of the first embodiment of the force-bearing pile of the utility model is shown. As shown in FIG3 , the force-bearing pile includes a pile body 301 , a connecting plate 302 , and a locking structure. The locking structure includes a connecting locking groove 303 and a connecting locking buckle 304 .

[0055] The pile body is configured as a closed structure with a hole in the middle, i.e., a cavity, and includes a soil facing portion 3011 close to the bank and a water facing portion 3012 away from the bank. The connecting plates 302 are arranged on both sides of the pile body. Figure 3a As shown, the soil facing part 3011 includes an upper part of the pile body connected to the connecting plates 302 on both sides, and the water part 3012 includes a lower part of the pile body connected to the connecting plates 302 on both sides.

[0056] like Figure 3a As shown, the length of the stressed pile is L, the maximum distance between the two sides of the pile body 301 in the length direction of the stressed pile is B, and the maximum distance between the soil facing part 3011 and the water facing part 3012 of the pile body in the length direction perpendicular to the stressed pile is H.

[0057] In one embodiment of the utility model, the cross section of the connecting plate is in an arc, rectangular, trapezoidal, wavy or other shapes. In one embodiment of the utility model, the pile body and the connecting plate are both integrally formed structures. In one embodiment of the utility model, the pile body and the connecting plate are provided with reinforcing ribs and / or decorative layers. In one embodiment of the utility model, the pile body and the connecting plate are preferably made of polymer materials, and the polymer materials can be selected from materials such as PET, HDPE, PVC, PMMA, PP, PS or ASA.

[0058] The connecting lock buckle has a lock head that can be matched with the connecting lock groove. Figure 3a As shown, the connecting lock groove has a lock cavity with a C-shaped cross section, and the connecting lock buckle has a lock head with a circular cross section that can be movably connected to the C-shaped lock cavity. In one embodiment of the utility model, the connecting lock groove is arranged on one side or both sides of the pile body or the connecting plate. In one embodiment of the utility model, the connecting lock buckle is arranged on one side or both sides of the pile body or the connecting plate. The structure of the connecting lock groove and the connecting lock buckle is as shown in FIG. Figure 3b As shown, the connecting lock buckle can rotate or move relative to the connecting lock groove. In one embodiment of the utility model, the connecting lock groove and the connecting lock buckle are engaged with each other through engaging parts such as sawtooth parts formed on the side walls of the two parts, and the engaged structure can realize the relative rotation of the lock head, and also has better anti-seepage and anti-leakage functions.

[0059] Figure 3c The figure shows a schematic diagram of the connection structure of the first embodiment of the load-bearing pile of the utility model. Figure 3c As shown, a plurality of the pile bodies and a plurality of the connecting plates are alternately connected to form a connecting structure of the load-bearing piles, thereby forming a retaining wall.

[0060] In an embodiment of the present invention, the cross-sectional shape of the cavity of the pile body is circular, elliptical, triangular, polygonal, or a combination thereof, or other shapes. Figure 4 FIG. 2 shows a schematic diagram of the connection structure of the second embodiment of the force-bearing pile of the utility model. Figure 4 As shown, the load-bearing pile includes a pile body 401, a connecting plate 402, a connecting locking groove 403 and a connecting locking buckle 404. Figure 4 As shown, the cross-sectional shape of the cavity of the pile body 401 is an ellipse.

[0061] In an embodiment of the present invention, the number of cavities in the pile body is one or more. Figure 5 FIG. 2 shows a schematic diagram of the connection structure of the third embodiment of the load-bearing pile of the utility model. Figure 5 As shown, the load-bearing pile includes a pile body 501, a connecting plate 502, a connecting locking groove 503 and a connecting locking buckle 504. Figure 5 As shown, the pile body 501 has two cavities. Figure 6 FIG. 2 shows a schematic diagram of the connection structure of the fourth embodiment of the force-bearing pile of the utility model. Figure 6 As shown, the load-bearing pile includes a pile body 601, a connecting plate 602, a connecting locking groove 603 and a connecting locking buckle 604. Figure 6 As shown, the pile body 601 has three cavities.

[0062] Figure 7 FIG. 2 shows a schematic diagram of the three-dimensional structure of a load-bearing pile according to an embodiment of the utility model. Figure 7 As shown, the connecting plates 702 are arranged at both ends of the pile body 701, the connecting lock slots 703 are arranged at the right end of the connecting plate 702, and the connecting lock buckles 704 are arranged at the left end of the connecting plate 702. A plurality of pile bodies are connected through the connecting lock slots and the connecting lock buckles.

[0063] Figure 8 Schematic diagram showing the dimensions of an embodiment of the present invention. Figure 8 As shown, the load-bearing pile includes a pile body 801, a connecting plate 802, a connecting lock groove 803 and a connecting lock buckle 804. The pile body 801 includes a soil-facing part 8011 close to the side of the embankment, that is, the soil-facing surface, and a water-facing part 8012 away from the side of the embankment. The direction parallel to the soil-facing surface is the length direction of the load-bearing pile, the length of the load-bearing pile is L, the length of the connecting plate with the connecting lock buckle 804 at the end in the length direction of the load-bearing pile is A, the maximum distance between the two sides of the pile body 801 in the length direction of the load-bearing pile is B, the length of the connecting plate with the connecting lock groove 803 at the end in the length direction of the load-bearing pile is C, and the maximum distance between the soil-facing part and the water-facing part of the pile body in the length direction perpendicular to the load-bearing pile is H, L=A+B+C. In the present utility model, the relationship between L, B and H will affect the load-bearing properties such as stiffness, bending and shearing resistance, and economic properties such as material saving of the load-bearing body, and belongs to the main size.

[0064] According to finite element analysis, in order to make the load-bearing pile produce soil arch effect, the best technical effect can be achieved when the sizes and ratios between B, L, and H simultaneously meet the following value ranges:

[0065] 1.5H≤L≤2.5H, 100mm≤H≤380mm, 0.6H≤B≤2H. If only one or two of the above dimensions and proportions are met, the corresponding technical effects can be obtained to a certain extent.

[0066] Fig. 9A schematic diagram of the structure of placing an object in the pile body cavity of a load-bearing pile according to an embodiment of the utility model is shown. The cavity of the pile body is configured to accommodate landscape plants; and / or a water filter layer is provided in the cavity of the pile body; and / or the cavity of the pile body is configured to be able to hang a planting frame externally.

[0067] The utility model provides a load-bearing pile, in which the pile body is arranged as a load-bearing main body of a closed structure, thereby enhancing the integrity of the pile plate; the pile body is arranged with a cavity to save raw materials; the connecting lock buckle can be rotated or moved relative to the connecting lock groove, and the construction is more convenient; by selecting a suitable proportional relationship and / or size range, the soil pressure is transmitted to the pile body, and the stress on the connecting plates on both sides reaches a minimum state; the pile body is connected by the connecting plate, so that the soil squeezing effect between the connected piles can be reduced.

[0068] Although various embodiments of the utility model are described above, it should be understood that they are presented as examples only and not as limitations. It is obvious to those skilled in the relevant art that various combinations, modifications and changes can be made thereto without departing from the spirit and scope of the utility model. Therefore, the breadth and scope of the utility model disclosed herein should not be limited by the exemplary embodiments disclosed above, but should only be defined according to the attached claims and their equivalents.

Claims

1. A load-bearing pile for embankment, characterized in that: include: A pile body having a cavity, wherein the pile body comprises: a soil facing portion configured to be arranged on a soil facing surface; and a water-facing portion configured to be arranged on a water-facing surface; and Two connecting plates, which are respectively arranged on both sides of the pile body; The length of the stressed pile is L, and the maximum distance between the soil facing part and the water facing part of the pile body in a direction perpendicular to the length of the stressed pile is H, wherein the ratio between L and H is in the range of 1.5H≤L≤2.5H.

2. The stressed pile according to claim 1, characterized in that: The value range of H is 100mm≤H≤380mm.

3. The stressed pile according to claim 1, characterized in that: The maximum distance between the two sides of the pile body in the length direction of the load-bearing pile is B, wherein the ratio of B to H is in the range of 0.6H≤B≤2H.

4. The stressed pile according to claim 1, characterized in that: Also includes: A locking structure comprises a connecting lock slot and a connecting lock buckle, wherein the connecting lock buckle has a lock head capable of cooperating with the connecting lock slot, and wherein the connecting lock buckle is constructed to be capable of rotating or moving relative to the connecting lock slot.

5. The stressed pile according to claim 4, characterized in that: The connecting lock groove has a lock cavity with a C-shaped cross section, and the connecting lock buckle has a lock head with a circular cross section that can be movably connected to the C-shaped lock cavity.

6. The stressed pile according to claim 1, characterized in that: The pile body and the connecting plate are integrally formed.

7. The stressed pile according to claim 1, characterized in that: The pile body and / or the connecting plate are made of polymer material.

8. The stressed pile according to claim 1, characterized in that: The cavity of the pile is configured to accommodate landscape plants; and / or A water filter layer is provided in the cavity of the pile body; and / or The cavity of the pile body is configured to allow a planting frame to be hung externally.

9. The stressed pile according to claim 1, characterized in that: The cross-sectional shape of the cavity of the pile body is one of the following or a combination thereof: circular, elliptical, triangular, and polygonal.

10. A retaining wall for an embankment, formed by sequentially connecting a plurality of load-bearing piles as claimed in any one of claims 1 to 9.

Images