An arch-shaped prestressed support pile

Abstract

This utility model relates to the field of building technology, specifically disclosing an arched prestressed support pile. It includes: a support pile body, the support pile body comprising a central structure, first and second connecting arms disposed on the left and right sides of the central structure, and multiple sets of prestressed steel bars axially disposed inside the support pile body; the first and second connecting arms of adjacent support pile bodies can be connected to each other; the upper part of the support pile body is a compression zone, and the lower part of the support pile body is a tension zone; the diameter of the prestressed steel bars disposed in the compression zone is smaller than the diameter of the prestressed steel bars disposed in the tension zone. This utility model achieves targeted regional placement of prestressed steel bars, avoiding redundant configuration of prestressed steel bars in the compression zone.

Description

Technical Field

[0001] This utility model relates to the field of building technology, and in particular to an arched prestressed support pile. Background Technology

[0002] Open-type hydraulic support piles are a type of support structure specifically designed for hydraulic engineering projects. Their purpose is to improve the stability and safety of foundation pits or river channels, serving both water-stopping and soil-retaining functions. Currently, to increase the flexural bearing capacity of support piles, a common method is to uniformly increase the diameter of the prestressed steel bars. However, this approach is inefficient; when the support pile is under stress, the load is mainly borne by the tension zone reinforcement, while the contribution of the compression zone reinforcement is limited, easily leading to resource waste. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an arch-shaped prestressed support pile, which enables targeted regional setting of prestressed steel bars, avoiding redundant configuration of prestressed steel bars in the compression zone.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An arch-shaped prestressed retaining pile includes: a retaining pile body, the retaining pile body comprising an intermediate structure, first connecting arms and second connecting arms disposed on the left and right sides of the intermediate structure, and multiple sets of prestressed steel bars disposed axially inside the retaining pile body, wherein the first connecting arms and second connecting arms of two adjacent retaining pile bodies can be connected to each other; the intermediate structure includes a concave portion at its bottom and an convex portion at its top, both the concave portion and the convex portion extending axially along the retaining pile body; the upper part of the retaining pile body is a compression zone, the lower part of the retaining pile body is a tension zone, and the diameter of the prestressed steel bars disposed in the compression zone is smaller than the diameter of the prestressed steel bars disposed in the tension zone.

[0006] According to some embodiments of the present invention, an anti-scouring plate is provided on the top surface of the support pile body, and the bottom shape of the anti-scouring plate matches the top shape of the support pile body.

[0007] According to some embodiments of the present invention, the tension zone is located at the lower part of the first connecting arm, the second connecting arm, and the intermediate structure, and the compression zone is located at the upper part of the first connecting arm, the second connecting arm, and the intermediate structure.

[0008] According to some embodiments of this utility model, the cross-sectional shape of the concave portion and the convex portion is arc-shaped, and the highest point of the concave portion and the highest point of the convex portion are located in the same vertical direction.

[0009] According to some embodiments of this utility model, the prestressed steel bars are arched and equidistantly spaced.

[0010] According to some embodiments of the present invention, the first connecting arm includes an outwardly protruding side protrusion disposed on its side, and the second connecting arm includes an inwardly recessed side concave portion disposed on its side, wherein the side protrusion can be matched and spliced ​​with the side concave portion.

[0011] According to some embodiments of the present invention, both the convex portion and the concave portion are disposed within the tension zone.

[0012] According to some embodiments of the present invention, the top surfaces of the first connecting arm and the second connecting arm are both connected to the upper protrusion, and the connection point is the first inflection point; the bottom surfaces of the first connecting arm and the second connecting arm are both connected to the lower concave portion, and the connection point is the second inflection point.

[0013] According to some embodiments of the present invention, the top surfaces of both the first connecting arm and the second connecting arm gradually slope downwards outwards from the first inflection point.

[0014] According to some embodiments of the present invention, when two support pile bodies are stacked one on top of the other, the second inflection point of the upper support pile body is placed at the first inflection point of the lower support pile body.

[0015] This utility model has at least the following beneficial effects:

[0016] The recessed and convex portions facilitate stacking and hoisting of the support pile body during storage or transportation; the first and second connecting arms facilitate interconnection; prestressed steel bars are configured separately in the compression and tension zones to improve stress distribution, significantly enhance the bending bearing capacity of the support pile body, and specifically strengthen the prestressed steel bars in the tension zone to avoid redundant configuration of prestressed steel bars in the compression zone. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of one embodiment of the present utility model. Figure 2 ;

[0019] Figure 3 This is an installation diagram of one embodiment of the present invention;

[0020] Figure 4 This is a stacking diagram of one embodiment of the present invention. Detailed Implementation

[0021] This invention provides the following description with reference to the accompanying drawings to aid in a comprehensive understanding of the various embodiments of the invention as defined by the claims and their equivalents. The description includes various specific details to aid understanding, but these details should be considered exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the invention.

[0022] In the description of this utility model, the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] It should be understood that when one element (e.g., the first element) is “connected” to another element (e.g., the second element), the element may be directly connected to the other element, or there may be an intervening element (e.g., the third element) between the element and the other element.

[0024] An embodiment of this utility model provides an arched prestressed support pile, such as... Figure 1-4 As shown, it includes: a support pile body 1, which includes an intermediate structure 100, a first connecting arm 101 and a second connecting arm 102 disposed on the left and right sides of the intermediate structure 100, and multiple sets of prestressed steel bars 2 disposed axially inside the support pile body 1. The first connecting arm 101 and the second connecting arm 102 of two adjacent support pile bodies 1 can be connected to each other. The intermediate structure 100 includes a concave portion 103 at its bottom and an convex portion 104 at its top. Both the concave portion 103 and the convex portion 104 extend axially along the support pile body 1. The upper part of the support pile body 1 is a compression zone 201, and the lower part of the support pile body 1 is a tension zone 202. The diameter of the prestressed steel bars 2 disposed in the compression zone 201 is smaller than the diameter of the prestressed steel bars 2 disposed in the tension zone 202.

[0025] The support pile body 1 is horizontally positioned across the river channel. First connecting arms 101 and second connecting arms 102 are located on either side of the central structure 100, allowing adjacent support pile bodies 1 to connect to each other. This facilitates quick and easy assembly into a continuous pile wall structure, meeting the support requirements of different lengths and scales. The upward-recessed lower portion 103 at the bottom of the support pile body 1 and the upward-protruding upper portion 104 at the top allow the support pile bodies 1 to be nested together during stacking and transportation, improving stability and preventing slippage or tipping during stacking. This also saves space and reduces storage and transportation costs. Multiple sets of prestressed steel bars 2 are axially arranged inside the support pile body 1, forming an arched prestress distribution. Combined with the upper protrusion 104 and the lower recess 103, this creates an effective stress distribution within the support pile body 1, enhancing its overall rigidity and strength, and enabling it to better resist external loads.

[0026] The upper part of the support pile body 1 is the compression zone 201, and the lower part is the tension zone 202. When the support pile body 1 is under stress, the load is mainly borne by the prestressed steel bars 2 in the tension zone 202, while the role of the steel bars in the compression zone 201 is relatively low. If all the prestressed steel bars 2 of the same diameter are used, it will easily lead to waste of resources. According to the stress characteristics, the diameter of the prestressed steel bars 2 set in the compression zone 201 is smaller than that of the prestressed steel bars 2 set in the tension zone 202. For example, in practice, the diameter of the prestressed steel bars 2 in the compression zone 201 is 9.0 mm, and the diameter of the prestressed steel bars 2 in the tension zone 202 is 10.7 mm or even 12.6 mm. This allows the prestressed steel bars 2 to play a more reasonable role in the support pile body 1, which can effectively improve the crack resistance and bearing capacity of the support pile body 1. At the same time, it reduces resource waste, achieves targeted reinforcement of the steel bars in the tension zone 202, and avoids redundant configuration of the steel bars in the compression zone 201. By adjusting the configuration of prestressed steel bars 2 to meet the support requirements, it has strong versatility and adaptability.

[0027] Furthermore, the diameter of the prestressed steel bars 2 in the compression zone 201 is 7.1mm, 9.0mm, or 10.7mm, and the diameter of the prestressed steel bars 2 in the tension zone 202 is 9.0mm, 10.7mm, or 12.6mm. During the design and construction of the support pile body 1, the diameter of the prestressed steel bars 2 can be rationally selected according to different stress zones. Since the diameter of the prestressed steel bars 2 in the compression zone 201 is smaller, and the diameter in the tension zone 202 is larger, when improving the flexural bearing capacity of the support pile body 1, it is only necessary to configure prestressed steel bars 2 with a larger nominal diameter in the tension zone 202, rather than in the tension zone 202. This approach helps the support pile body 1 form an arch-like stress distribution, improving the overall structural bearing capacity and crack resistance, better utilizing the performance of the prestressed steel bars 2, and reducing resource waste.

[0028] In some embodiments, such as Figure 1-2 As shown, an anti-scouring plate 3 is provided on the top surface of the support pile body 1, and the bottom shape of the anti-scouring plate 3 matches the top shape of the support pile body 1.

[0029] The cumulative erosion action of rivers wears down the support pile body 1, directly reducing its load-bearing capacity and structural stability, thus shortening its service life. The scour protection plate 3 effectively protects the support pile body 1 and extends its service life. In practice, the scour protection plate 3 is made of plastic, utilizing the principle that plastic is difficult to degrade to improve durability.

[0030] In some embodiments, such as Figure 1 As shown, the tension zone 202 is located at the lower part of the first connecting arm 101, the second connecting arm 102 and the intermediate structure 100, and the compression zone 201 is located at the upper part of the first connecting arm 101, the second connecting arm 102 and the intermediate structure 100.

[0031] In practice, the compression zone 201 and the tension zone 202 are symmetrically arranged on both sides of the support pile body 1, with the tension zone 202 located in the lower part of the support pile body 1.

[0032] In some embodiments, such as Figure 1 As shown, the cross-sectional shape of both the concave portion 103 and the convex portion 104 is arc-shaped, and the highest point of the concave portion 103 and the highest point of the convex portion 104 are set in the same vertical direction.

[0033] Setting the piles in the same vertical direction allows for greater space compression when stacked, making them easier to store and preventing instability or misalignment due to irregular shapes. This improves the stability of the piles during storage and transportation.

[0034] Furthermore, when the two support pile bodies 1 are stacked one on top of the other, the distance between the highest point of the concave portion 103 of the upper support pile body 1 and the highest point of the convex portion 104 of the lower support pile body 1 is 5-15cm. The space between the highest points of the convex portion 104 and the concave portion 103 is the gap between the two piles after stacking, and the actual spacing is 10cm, which ensures sufficient space for hoisting operations after the support pile bodies 1 are stacked.

[0035] In some embodiments, the prestressed steel bars 2 are arched and equidistantly spaced.

[0036] The prestressed steel bars 2 are arranged in an arch shape around one side of the recessed portion 103 within the support pile body 1, resulting in a uniform stress distribution inside. Combined with the fact that the diameter of the prestressed steel bars 2 in the compression zone 201 is smaller than that of the prestressed steel bars 2 in the tension zone 202, this arrangement helps to form an arch-like stress distribution in the pile body after tensioning, thereby enhancing the overall stability and bending resistance of the structure.

[0037] In some embodiments, the first connecting arm 101 includes an outwardly protruding side protrusion 107 disposed on its side, and the second connecting arm 102 includes an inwardly recessed side concave portion 108 disposed on its side, wherein the side protrusion 107 can be matched and spliced ​​with the side concave portion 108.

[0038] Specifically, the protrusions or depressions can be in the shape of a semi-circle, T-shape, trapezoid, etc. The matching splicing method can realize the efficient lateral connection between adjacent support pile bodies 1, and improve construction efficiency.

[0039] Furthermore, both the convex portion 107 and the concave portion 108 are located within the tension zone 202. The outward compression within the tension zone, and the mutual compression, can further improve the connection strength of the convex portion 107 and the concave portion 108 of two adjacent support pile bodies 1.

[0040] In some embodiments, such as Figure 1 As shown, the top surfaces of the first connecting arm 101 and the second connecting arm 102 are both connected to the upper protrusion 104, and the connection point is the first inflection point 105; the bottom surfaces of the first connecting arm 101 and the second connecting arm 102 are both connected to the lower concave portion 103, and the connection point is the second inflection point 106.

[0041] Specifically, the first inflection point 105 and the second inflection point 106 do not necessarily refer to their straight line connection. The position can be arc-shaped, or convex and concave respectively, to facilitate subsequent stacking operations.

[0042] Furthermore, the top surfaces of both the first connecting arm 101 and the second connecting arm 102 gradually slope downwards outwards along the first inflection point 105.

[0043] In practice, the bottom surfaces of the first connecting arm 101 and the second connecting arm 102 are horizontal straight surfaces, and the top surfaces of the first connecting arm 101 and the second connecting arm 102 are designed to slope downwards, so that adjacent support pile bodies 1 can form a shape like this when stacked. Figure 4 The notch, as shown, makes the support pile body 1 easier to remove.

[0044] Furthermore, such as Figure 4 As shown, when the two support pile bodies 1 are stacked one on top of the other, the second inflection point 106 of the upper support pile body 1 is placed at the first inflection point 105 of the lower support pile body 1.

[0045] The upper and lower convex parts 104 and the lower concave parts 103 are stacked in a way that the second inflection point 106 of the upper support pile body 1 is placed exactly at the first inflection point 105 of the lower support pile body 1 when stacked, which improves the positioning and stability when stacked.

[0046] The terms and words used in the foregoing description and claims are not limited to their literal meaning, but are merely used by the applicant to enable a clear and consistent understanding of the present invention. Therefore, those skilled in the art should understand that the foregoing description of various embodiments of the present invention is for illustrative purposes only, and not intended to limit the present invention as defined by the appended claims and their equivalents.

Claims

1. An arched prestressed support pile, characterized by, include: The support pile body (1) includes an intermediate structure (100), a first connecting arm (101) and a second connecting arm (102) disposed on the left and right sides of the intermediate structure (100), and multiple sets of prestressed steel bars (2) disposed axially inside the support pile body (1). The first connecting arm (101) and the second connecting arm (102) of two adjacent support pile bodies (1) can be connected to each other. The intermediate structure (100) includes an inwardly recessed section at its bottom. The recessed portion (103) and the upwardly protruding portion (104) at its top both extend along the axial direction of the support pile body (1); the upper part of the support pile body (1) is a compression zone (201), and the lower part of the support pile body (1) is a tension zone (202); the diameter of the prestressed steel bar (2) set in the compression zone (201) is smaller than the diameter of the prestressed steel bar (2) set in the tension zone (202).

2. The arched prestressed support pile according to claim 1, characterized in that: The top surface of the support pile body (1) is provided with an anti-scouring plate (3), and the bottom shape of the anti-scouring plate (3) matches the top shape of the support pile body (1).

3. The arched prestressed support pile according to claim 1, characterized in that: The tension zone (202) is located at the lower part of the first connecting arm (101), the second connecting arm (102) and the intermediate structure (100), and the compression zone (201) is located at the upper part of the first connecting arm (101), the second connecting arm (102) and the intermediate structure (100).

4. An arch-shaped prestressed support pile according to claim 1, characterized in that: The cross-sectional shape of both the lower concave portion (103) and the upper convex portion (104) is arc-shaped, and the highest point of the lower concave portion (103) and the highest point of the upper convex portion (104) are set in the same vertical direction.

5. The arched prestressed support pile according to claim 1, characterized in that: The prestressed steel bars (2) are arched and spaced at equal intervals.

6. An arch-shaped prestressed support pile according to any one of claims 1-5, characterized in that: The first connecting arm (101) includes an outwardly protruding side protrusion (107) disposed on its side, and the second connecting arm (102) includes an inwardly recessed side concave portion (108) disposed on its side, wherein the side protrusion (107) can be matched and spliced ​​with the side concave portion (108).

7. An arch-shaped prestressed support pile according to claim 6, characterized in that: Both the convex portion (107) and the concave portion (108) are disposed within the tension zone (202).

8. An arch-shaped prestressed support pile according to any one of claims 1-5, characterized in that: The top surfaces of the first connecting arm (101) and the second connecting arm (102) are both connected to the upper protrusion (104), and the connection point is the first inflection point (105); the bottom surfaces of the first connecting arm (101) and the second connecting arm (102) are both connected to the lower recess (103), and the connection point is the second inflection point (106).

9. An arch-shaped prestressed support pile according to claim 8, characterized in that: The top surfaces of the first connecting arm (101) and the second connecting arm (102) gradually slope downwards outwards from the first inflection point (105).

10. The arch-shaped prestressed support pile according to claim 9, characterized in that: When the two support pile bodies (1) are stacked one on top of the other, the second inflection point (106) of the upper support pile body (1) is placed at the first inflection point (105) of the lower support pile body (1).

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