Special-shaped supporting angle solid square pile and combined pile

Abstract

This utility model discloses an irregularly shaped corner solid square pile and a combined pile. The solid square pile includes a pile body, which comprises alternating square segments and irregularly shaped segments along its length. Each irregularly shaped segment includes a cylindrical portion and a first protrusion extending radially outward from the outer side of the cylindrical portion. The position of the first protrusion corresponds to the position of the diagonal of the cross-section of the square segment. The diameter of the cylindrical portion is less than or equal to the side length of the square segment. The pile body has square segments at both ends. A cylindrical connecting segment is also provided at both ends of the pile body, with the outer diameter of the cylindrical connecting segment being less than or equal to the side length of the square segment. A skirt plate is provided on the outer side of the cylindrical connecting segment, and / or an end plate is provided at the end of the cylindrical connecting segment. The irregularly shaped corner solid square pile disclosed in this application, because it also has cylindrical connecting segments at both ends of the pile body, with the outer diameter of the cylindrical connecting segments being less than or equal to the side length of the square segment, can reduce the perimeter or end area of ​​the precast pile connection portion, thereby reducing the size (area) of the skirt plate or end plate of the irregularly shaped corner solid square pile, further reducing costs.

Description

Technical Field

[0001] This utility model relates to the field of precast pile technology, and in particular to an irregularly shaped corner solid square pile and a combined pile. Background Technology

[0002] Pile foundations are a widely used type of foundation in building engineering, especially in the soft soil areas of southeastern coastal my country, where they have been extensively used. With continuous advancements in science and technology, material innovation, and construction techniques, the requirements for piles are becoming increasingly stringent.

[0003] How to improve the bearing capacity, shear resistance, and bending resistance of piles, while achieving higher material utilization and thus saving resources, has been a problem that those skilled in the art have been committed to solving. To this end, Chinese utility model patent CN220868177U - A Solid Square Pile with Irregular Supports and Angles discloses an irregular square pile. By setting the pile body into alternating square segments and irregular segments, the irregular segments include a columnar part and a support and angle structure set on the columnar part, thereby enabling the precast pile to have better compressive, bending, and shear resistance, improving the slenderness ratio of the precast pile, saving production resources and reducing construction costs; and improving the interaction force between the precast pile and the soil, among other advantages.

[0004] However, this type of irregular pile also has the following problems: at both ends of the irregular pile, it is generally necessary to set up structures such as skirts or end plates to increase the hammer impact resistance of the precast pile ends or to connect the precast piles. Since the two ends of the precast pile are square sections (large cross sections), the area of ​​the skirts (increased skirt length) or end plates is increased, which in turn increases the cost of the precast pile. Utility Model Content

[0005] This utility model addresses the above-mentioned problems by proposing an irregularly shaped corner solid square pile.

[0006] The technical means adopted in this utility model are as follows:

[0007] A solid square pile with irregular corner supports includes a pile body. The pile body includes square segments with a square cross-section and irregular segments with an irregular cross-section, which are alternately arranged along the length of the pile body. Each irregular segment includes a cylindrical portion with a circular cross-section and a first protrusion extending radially outward from the outer side of the cylindrical portion. The position of the first protrusion corresponds to the position of the diagonal of the cross-section of the square segment. The diameter of the cylindrical portion is less than or equal to the side length of the square segment. The pile body is composed of square segments at both ends. A cylindrical connecting segment is also provided at the end of each square segment located at both ends of the pile body. The outer diameter of the cylindrical connecting segment is less than or equal to the side length of the square segment. The outer side of the cylindrical connecting segment is provided with a skirt plate and / or the end of the cylindrical connecting segment is provided with an end plate.

[0008] Furthermore, the length of the cylindrical connecting section is 50-100mm.

[0009] Furthermore, the cross-sectional shape of the first protrusion includes two included angled sides symmetrically arranged with respect to the diagonal of the cross-section of the square segment and a connecting side connecting one end of the two included angled sides, the other end of the included angled sides intersecting with the cross-section of the cylindrical portion.

[0010] Furthermore, the two included sides and the connecting side form a protruding angle, the angle of which is greater than or equal to 90°.

[0011] Furthermore, the irregular segment also includes at least one second protrusion; the cross-sectional shape of the second protrusion includes two first sides symmetrically arranged with respect to the midline of the cross-section of the square segment and a second side flush with the edge line of the cross-section of the square segment, one end of the first side intersects the cross-section of the cylindrical portion, and the other end intersects the end of the second side; the two first sides are parallel to each other or the distance between the two first sides gradually decreases outward along the radial direction of the cylindrical portion.

[0012] Furthermore, the length of the square segment is ≥400mm, and the distance between the centers of two adjacent square segments is ≤2000mm.

[0013] Furthermore, it also includes main reinforcement bars and stirrups wrapped around the main reinforcement bars, and the main reinforcement bars are arranged in a circular or polygonal manner; when the main reinforcement bars are arranged in a polygonal manner, the distance between the main reinforcement bar near the protrusion and the pile axis is greater than the distance between the other main reinforcement bars and the pile axis.

[0014] Furthermore, a pile tip is provided at one end of the pile body.

[0015] Furthermore, a first inclined transition surface is provided between the square segment and the irregular segment; a second inclined transition surface is provided between the cylindrical connecting segment and the square segment.

[0016] Furthermore, the included angles of the four sides of the cross-section of the square segment are rounded.

[0017] A composite pile includes: two sections of solid square piles with first irregular corner supports;

[0018] The first irregular corner solid square pile adopts the irregular corner solid square pile described in this application, and the end of the square segment at one end of the first irregular corner solid square pile is provided with a columnar connecting segment.

[0019] The first irregular-shaped corner solid square pile has an end plate and / or mechanical connector at one end of a column-shaped connecting section;

[0020] The two sections of the first irregular-shaped corner solid square piles are welded together by end plates at the ends of the column-shaped connecting sections; or, the two sections of the first irregular-shaped corner solid square piles are anchored together by mechanical connectors at the ends of the column-shaped connecting sections; or, the two sections of the first irregular-shaped corner solid square piles are welded together by end plates at the ends of the column-shaped connecting sections and anchored together by mechanical connectors.

[0021] A composite pile includes: two sections of first irregularly shaped corner solid square piles and one or more sections of second irregularly shaped corner solid square piles;

[0022] The first irregular corner solid square pile adopts the irregular corner solid square pile described in this application, and the end of the square segment at one end of the first irregular corner solid square pile is provided with a columnar connecting segment.

[0023] The second irregular corner solid square pile adopts the irregular corner solid square pile described in this application, and the ends of the square segments at both ends of the second irregular corner solid square pile are provided with column-shaped connecting segments;

[0024] The first irregular-shaped corner solid square pile and the second irregular-shaped corner solid square pile are provided with an end plate and / or mechanical connector at one end of the column-shaped connecting section;

[0025] The two sections of the first irregular-shaped corner solid square pile are located at both ends of the composite pile, and one or more sections of the second irregular-shaped corner solid square pile are located in the middle of the composite pile;

[0026] Two adjacent sections of irregularly shaped corner solid square piles are welded together by end plates at the ends of the column-shaped connecting sections; or, two adjacent sections of irregularly shaped corner solid square piles are anchored together by mechanical connectors at the ends of the column-shaped connecting sections; or, two adjacent sections of irregularly shaped corner solid square piles are welded together by end plates at the ends of the column-shaped connecting sections and anchored together by mechanical connectors.

[0027] A composite pile includes: a first irregularly shaped corner solid square pile and one or more second irregularly shaped corner solid square piles;

[0028] The first irregular corner solid square pile adopts the irregular corner solid square pile described in this application, and the end of the square segment at one end of the first irregular corner solid square pile is provided with a columnar connecting segment.

[0029] The second irregular corner solid square pile adopts the irregular corner solid square pile described in this application, and the ends of the square segments at both ends of the second irregular corner solid square pile are provided with column-shaped connecting segments;

[0030] The first irregular-shaped corner solid square pile and the second irregular-shaped corner solid square pile are provided with an end plate and / or mechanical connector at one end of the column-shaped connecting section;

[0031] The first irregular-shaped corner solid square pile is located at the lower end of the composite pile, and one or more sections of the second irregular-shaped corner solid square pile are sequentially connected to the upper end of the first irregular-shaped corner solid square pile;

[0032] Two adjacent sections of irregularly shaped corner solid square piles are welded together by end plates at the ends of the column-shaped connecting sections; or, two adjacent sections of irregularly shaped corner solid square piles are anchored together by mechanical connectors at the ends of the column-shaped connecting sections; or, two adjacent sections of irregularly shaped corner solid square piles are welded together by end plates at the ends of the column-shaped connecting sections and anchored together by mechanical connectors.

[0033] A composite pile includes: two or more sections of solid square piles with second irregular support corners;

[0034] The second irregular corner solid square pile adopts the irregular corner solid square pile described in this application, and the ends of the square segments at both ends of the second irregular corner solid square pile are provided with column-shaped connecting segments;

[0035] The second irregular-shaped corner solid square pile has an end plate and / or mechanical connector at the end of the column-shaped connecting section;

[0036] The two sections of the second irregular-shaped corner solid square piles are welded together by end plates at the ends of the column-shaped connecting sections; or, the two sections of the second irregular-shaped corner solid square piles are anchored together by mechanical connectors at the ends of the column-shaped connecting sections; or, the two sections of the second irregular-shaped corner solid square piles are welded together by end plates at the ends of the column-shaped connecting sections and anchored together by mechanical connectors.

[0037] Compared with the prior art, the irregular corner solid square pile disclosed in this utility model has the following beneficial effects: The irregular corner solid square pile disclosed in this application has columnar connecting sections at both ends of the pile body. The outer diameter of the columnar connecting section is less than or equal to the side length of the square section, which can reduce the perimeter or end area of ​​the precast pile connecting part, and thus reduce the size (area) of the skirt plate or end plate of the irregular corner solid square pile, further reducing the cost. Attached Figure Description

[0038] Figure 1 This is a first-direction view of the first embodiment of the irregularly shaped corner solid square pile disclosed in this utility model, and a view of the direction in which the irregularly shaped section is provided with the second protrusion.

[0039] Figure 2 This is a second-direction view of the first embodiment of the irregularly shaped corner solid square pile disclosed in this utility model, a view in which the irregularly shaped section does not have a second protrusion;

[0040] Figure 3 This is an axial view of the first embodiment of the irregularly shaped corner solid square pile disclosed in this utility model;

[0041] Figure 4 This is an end view of the first embodiment of the irregularly shaped corner solid square pile disclosed in this utility model;

[0042] Figure 5 for Figure 1 The sectional view at point AA shows that the main reinforcement bars are arranged in a circular pattern.

[0043] Figure 6 for Figure 1 The sectional view at point AA shows that the main reinforcement bars are arranged in a polygonal pattern.

[0044] Figure 7 This is a first-direction view of a second embodiment of the irregularly shaped corner solid square pile disclosed in this utility model. In this embodiment, end plates are provided at both ends of the pile body.

[0045] Figure 8 This is an end view of a second embodiment of the irregularly shaped corner solid square pile disclosed in this utility model;

[0046] Figure 9 This is a structural diagram of the third embodiment of the irregularly shaped corner solid square pile disclosed in this utility model, wherein a columnar connecting section is provided at one end of the pile body;

[0047] Figure 10 This is an axial view of the third embodiment of the irregularly shaped corner solid square pile disclosed in this utility model;

[0048] Figure 11 This is an end view of a second embodiment of the irregularly shaped corner solid square pile disclosed in this utility model. In this embodiment, one end of the pile body is provided with a pile tip.

[0049] Figure 12 This is a structural diagram of the first embodiment of the combined pile disclosed in this utility model;

[0050] Figure 13 This is a structural diagram of the second embodiment of the combined pile disclosed in this utility model;

[0051] Figure 14 This is a structural diagram of the third embodiment of the combined pile disclosed in this utility model;

[0052] Figure 15 This is a structural diagram of the fourth embodiment of the combined pile disclosed in this utility model;

[0053] Figure 16 This is a structural diagram of the fifth embodiment of the combined pile disclosed in this utility model;

[0054] Figure 17 This is a structural diagram of the sixth embodiment of the combined pile disclosed in this utility model;

[0055] Figure 18This is a structural diagram of the seventh embodiment of the combined pile disclosed in this utility model;

[0056] Figure 19 This is a structural diagram of the eighth embodiment of the combined pile disclosed in this utility model.

[0057] In the diagram: 1. Pile body; 10. Square segment; 11. Irregular segment; 110. Columnar part; 111. First protrusion; 112. Angle side; 113. Connecting side; 12. Columnar connecting segment; 13. Second protrusion; 130. First side; 131. Second side; 14. Main reinforcement; 15. Pile tip; 16. First inclined transition surface; 17. Second inclined transition surface; 18. Skirt plate; 19. End plate; 20. First irregular corner solid square pile; 21. Second irregular corner solid square pile. Detailed Implementation

[0058] Example 1

[0059] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model discloses an embodiment of a solid square pile with irregular corners. In this embodiment, it includes a pile body 1, which includes square segments 10 with a square cross-section and irregular segments 11 with an irregular cross-section, alternatingly arranged along the length of the pile body. Each irregular segment 11 includes a cylindrical portion 110 with a circular cross-section and a first protrusion 111 extending radially outward from the outer side of the cylindrical portion. The position of the first protrusion 111 corresponds to the position of the diagonal of the cross-section of the square segment 10. The diameter of the cylindrical portion 110 is less than or equal to the side length of the square segment 10. The pile body 1 has square segments 10 at both ends. A cylindrical connecting segment 12 is also provided at the ends of the square segments 10 at both ends of the pile body 1. The outer diameter of the cylindrical connecting segment 12 is less than or equal to the side length of the square segment 10, and a skirt 18 is provided on the outer side of the cylindrical connecting segment 12.

[0060] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the irregularly shaped corner solid square pile disclosed in this embodiment includes a pile body 1, with a reinforcing cage inside the pile body 1. The pile body 1 includes alternating square segments 10 and irregular segments 11. The square segments 10 have a square cross-section, and the irregular segments 11 include a cylindrical portion 110 with a circular cross-section and a first protrusion 111 extending radially outward from the outer side of the cylindrical portion. The position of the first protrusion 111 corresponds to the position of the diagonal of the cross-section of the square segment 10. The outer diameter of the cylindrical portion 110 is less than or equal to the side length of the square segment 10. The two ends of the pile body 1 are square segments 10, and the outer ends of the square segments 10 at both ends of the pile body 1 are also provided with cylindrical connecting segments 12. The outer diameter of the cylindrical connecting segments 12 is less than or equal to the side length of the square segments. A skirt 18 is provided on the outer surface of the cylindrical connecting segments 12, or an end plate 19 is provided at the end of the cylindrical connecting segments 12, or a skirt is provided on the outer side of the cylindrical connecting portion 12 and an end plate 19 is provided at the end. Figure 3 The outer side of the columnar connecting section 12 shown is provided with a skirt plate 18, and the end of the columnar connecting section 12 does not have an end plate 19. In this embodiment of the irregularly shaped corner solid square pile, since the outer sides of the square sections 10 at both ends are also provided with columnar connecting sections 12, and the outer diameter of the columnar connecting section 12 is less than or equal to the side length of the square section 10, the size of the skirt plate provided on the outer side of the columnar connecting section 12 or the size of the end plate provided at the end of the columnar connecting section 12 can be effectively reduced. When the diameter of the circle is equal to the side length of the square, the circumference and area of ​​the circle are both 78.5% of the square, meaning that the skirt plate or end plate can be reduced by 21.5%, thereby effectively reducing the manufacturing cost of the precast pile. The solid square pile disclosed in this application can be a prestressed pile or a non-prestressed pile.

[0061] Furthermore, the length of the cylindrical connecting section is 50-100mm.

[0062] Specifically, in this embodiment, when the length of the columnar connecting section is 50-100mm, when the irregular pile in this embodiment is used to connect with the pile cap, part of the length of the large cross-section section (square section) is located in the cushion layer and the pile cap. This can reduce the planar dimensions of the pile cap and reduce construction costs, while ensuring that the connection between the pile cap and the irregular pile can obtain high shear and vibration resistance.

[0063] Furthermore, such as Figure 5As shown, the cross-sectional shape of the first protrusion 111 includes two angled sides 112 symmetrically arranged with respect to the diagonal of the cross-section of the square segment and a connecting side 113 connecting one end of the two angled sides 112. The other end of the angled sides 112 intersects with the cross-section of the cylindrical part 110. The irregularly shaped corner solid square pile disclosed in this embodiment has the following advantages due to the first protrusion at the angle between the four sides of the square pile on the outer periphery of the irregularly shaped section (columnar part): 1. The first protrusion at the angle between the four sides of the square pile on the outer periphery of the irregularly shaped section (columnar part) forms a reinforcing rib structure, which improves the supporting structural force of the square and irregularly shaped sections at the angle, thereby increasing the strength of the pile; 2. The protrusion at the angle reduces the distance of backfilling (soil being backfilled into the groove after being compressed); 3. The protrusion increases the perimeter of the columnar part, thereby increasing the lateral area of ​​the irregularly shaped section, which in turn increases the friction between the pile and the soil, thus improving the bearing capacity of the pile.

[0064] Furthermore, the two included sides 112 and the connecting side 113 form a protruding angle α, the angle of which is greater than or equal to 90°. Preferably, the angle of the protruding angle is greater than 90° and less than 110°, which not only enables the square segment and the irregular segment to obtain better supporting structural force at the included angle, thus improving the strength of the pile, but also facilitates casting and demolding.

[0065] Furthermore, such as Figure 1 , Figure 5 and Figure 6 As shown, the irregular segment 11 further includes at least one second protrusion 13. The cross-sectional shape of the second protrusion 13 includes two first sides 130 symmetrically arranged with respect to the centerline of the cross-section of the square segment and a second side 131 flush with the edge line of the cross-section of the square segment. One end of the first side 130 intersects the cross-section of the cylindrical part 110, and the other end intersects the end of the second side 131. The two first sides 130 are parallel to each other, or the distance between the two first sides 130 gradually decreases radially outward from the cylindrical part 110, that is, the cross-section of the second protrusion can be rectangular or trapezoidal. By setting the second protrusion, a reinforcing rib structure is formed, which improves the supporting structural force of the square segment and the irregular segment, and improves the strength of the pile. Due to the protrusion, the perimeter of the cylindrical part is increased, which in turn increases the lateral area of ​​the irregular segment, thereby increasing the friction between the pile and the soil and improving the bearing capacity of the pile. In the figure, the number of second protrusions is 1, but the number of second protrusions can be 1, 2, 3 or 4, which can be set as needed. Figure 3 There is one second protrusion, which is a structure formed at the pouring gate in the mold.

[0066] Furthermore, the length of the square segment 10 is ≥400mm, and the distance between the centers of two adjacent square segments 10 is ≤2000mm. The length of the square segment ≥400mm allows the static press to obtain a larger clamping area, facilitating the static press to clamp the irregularly shaped corner solid square pile disclosed in this application for pile driving. Simultaneously, the distance between the centers of two adjacent square segments 10 is ≤2000mm, which facilitates the static press to sequentially clamp the square segments of the irregularly shaped corner solid square pile disclosed in this application for pile driving.

[0067] Furthermore, it also includes main reinforcement bars 14 and stirrups wrapped around the main reinforcement bars 14, and the main reinforcement bars 14 are arranged in a circular or polygonal manner; when the main reinforcement bars 14 are arranged in a polygonal manner, the distance of the main reinforcement bar 14 near the protrusion from the pile axis is greater than the distance of the other main reinforcement bars 14 from the pile axis.

[0068] The irregularly shaped corner solid square pile disclosed in this embodiment also includes main reinforcement 14 and stirrups wrapped around the main reinforcement 14, that is, a steel cage is set inside the pile body to further improve the strength of the precast pile, such as Figure 5 As shown, the multiple main reinforcing bars 14 can be arranged in a circular pattern, preferably, as shown in the figure. Figure 6 As shown, a first protrusion is provided on the outer side of the columnar section (irregular segment). The main reinforcement bars are arranged in a polygonal pattern within the pile body, and the distance between the main reinforcement bars near the protrusion and the pile axis is greater than or equal to the distance between the other main reinforcement bars and the pile axis. Figure 6 As shown in the diagram, there are 16 main reinforcing bars arranged in an octagonal pattern. The inclusion of main reinforcing bars and stirrups within the pile body further enhances the pile's bearing capacity, bending resistance, shear resistance, and bending strength. Furthermore, when the main reinforcing bars are arranged in a polygonal pattern, the distance from the pile axis to the main reinforcing bars near the protruding parts is greater than the distance to the pile axis from other main reinforcing bars, resulting in a more uniform stress distribution throughout the pile and improving its performance. The main reinforcing bars are closer to the protruding corners, increasing the strength of the protruding parts; simultaneously, the outer position of the main reinforcing bars improves the pile's bending and shear resistance.

[0069] Furthermore, a first inclined transition surface 16 is provided between the square segment 10 and the irregular segment 11; a second inclined transition surface 17 is provided between the cylindrical connecting segment 12 and the square segment 10.

[0070] Specifically, in this embodiment, such as Figure 1 and Figure 3As shown, the side length of the square segment 10 is greater than the diameter of the cylindrical part 110 of the irregular segment 11. The transition position between the square segment 10 and the irregular segment 11 is an inclined transition surface, forming the first inclined transition surface 16. The outer diameter of the cylindrical connecting segment 12 is less than or equal to the side length of the square segment 10. The transition position between the cylindrical connecting segment 12 and the square segment 10 is an inclined transition surface, forming the second inclined transition surface 17. By setting the first inclined transition surface 16 and the second inclined transition surface 17, the existence of sharp corner edges is eliminated, thereby avoiding damage to the sharp corner edges caused by the interaction between the precast pile and the soil layer during the precast pile driving process, thus improving the service life of the precast pile.

[0071] like Figure 7 and Figure 8 The following is another embodiment of the irregularly shaped corner solid square pile disclosed in this utility model. The difference between this embodiment and the previous embodiment is that in the previous embodiment, mechanical joints are provided at both ends of the pile body, and adjacent pile sections are mechanically connected through the mechanical joints. In this embodiment, the end of the columnar connecting section 12 of the irregularly shaped corner solid square pile is provided with an end plate 19, that is, the pile body 1 is also provided with end plates 19 at both ends. By setting the end plates 19, adjacent precast pile sections can be connected by welding the end plates, or mechanical joints can be installed on the end plates 19, and adjacent pile sections can be connected by mechanical connection, or a composite connection method of mechanical connection by mechanical joints and welding of end plates can be used to connect the precast piles in different ways.

[0072] Furthermore, the included angles of the four sides of the cross-section of the square segment are rounded.

[0073] Specifically, such as Figure 4 , Figure 5 and Figure 6 As shown, the included angles of the four sides of the cross-section of the square segment are rounded, that is, the four edges of the square segment are processed into rounded edge structures, thereby eliminating sharp corners and avoiding damage to the sharp corners caused by the interaction between the precast pile and the soil layer during the precast pile driving process, thus improving the service life of the precast pile.

[0074] Example 2

[0075] like Figure 9 and Figure 10 The following is another embodiment of the irregular corner solid square pile disclosed in this utility model. The difference between this embodiment and embodiment 1 is that in embodiment 1, the ends of the square segments at both ends of the irregular corner solid square pile are provided with columnar connecting segments. In this embodiment, the end of the square segment 10 at one end of the irregular corner solid square pile is provided with a columnar connecting segment 12.

[0076] Example 3

[0077] like Figure 11The figure shown is another embodiment of the irregular corner solid square pile disclosed in this utility model. The irregular corner solid square pile disclosed in this embodiment is further provided with a pile tip 15 at one end of the pile body 1.

[0078] Specifically, such as Figure 11 As shown, a pile tip 15 is also provided at one end of the pile body 1. By setting the pile tip 15, a section of solid square pile with irregular support corners with a pile tip is used at the bottom of the composite pile, which can reduce the resistance during the pile driving process and facilitate the pile driving. At the same time, the pile tip 15 can play a guiding role to ensure the accuracy of the pile driving.

[0079] Example 4

[0080] like Figure 12 The figure shown is an embodiment of a composite pile disclosed in this utility model, comprising: two sections of first irregularly shaped corner solid square piles 20;

[0081] The first irregular-shaped corner solid square pile 20 adopts the irregular-shaped corner solid square pile described in Embodiment 2 of this application, and the end of the square segment 10 at one end of the first irregular-shaped corner solid square pile 20 is provided with a columnar connecting segment 12; that is, in this embodiment, the combined pile includes two sections of irregular-shaped corner solid square piles disclosed in Embodiment 2.

[0082] The first irregular corner solid square pile 20 is provided with a column-shaped connecting section 12, one end of which is provided with an end plate and / or mechanical connector;

[0083] The two sections of the first irregular-shaped corner solid square pile 20 are welded together by the end plate at the end of the column connecting section 12; or, the two sections of the first irregular-shaped corner solid square pile 20 are anchored together by the mechanical connector at the end of the column connecting section 12; or, the two sections of the first irregular-shaped corner solid square pile 20 are welded together by the end plate at the end of the column connecting section 12 and anchored together by the mechanical connector.

[0084] Specifically, this application discloses a composite pile, comprising two sections of irregularly shaped, corner-supported solid square piles as disclosed in Embodiment 2. In one embodiment, the end of the columnar connecting section of the irregularly shaped, corner-supported solid square pile may be provided with an end plate, which is fixedly connected to the main reinforcement bars within the precast pile body. Adjacent sections of the irregularly shaped, corner-supported solid square pile are connected by welding the end plates. In another embodiment, the end of the columnar connecting section of the irregularly shaped, corner-supported solid square pile is provided with a mechanical joint, and adjacent sections of the irregularly shaped, corner-supported solid square pile are connected by the mechanical joint. In yet another embodiment, the end of the columnar connecting section of the irregularly shaped, corner-supported solid square pile is provided with an end plate, on which a mechanical joint is installed. Adjacent sections of the irregularly shaped, corner-supported solid square pile are connected by welding the end plates and the mechanical joint. The mechanical structure can employ any type of mechanical joint disclosed in the prior art. For example, the mechanical connectors can also be those disclosed in patents such as CN114351696A, CN204780879U, CN208169271U, CN210104726U, CN210562156U, CN212294638U, CN217758728UCN218060286U, CN218090813U, and CN218090813U. This embodiment does not limit these applications. The combined pile disclosed in this embodiment not only saves costs but also has a large cross-section at the lower end, which improves the bearing capacity of the combined pile. This combined pile can be used as a friction pile, an end-bearing friction pile, a friction-end-bearing pile, and an end-bearing pile.

[0085] Example 5

[0086] like Figure 13 The illustration shows another embodiment of a combined pile disclosed in this utility model. The difference between this embodiment and the combined pile in Embodiment 4 is that, in this embodiment, the lower end of the first irregularly shaped corner solid square pile 20 is further provided with a pile tip to reduce resistance during pile driving and facilitate pile driving. Simultaneously, the pile tip 15 serves a guiding function to ensure the accuracy of pile driving. This combined pile can be used as a friction pile, an end-bearing friction pile, a friction-end-bearing pile, and an end-bearing pile.

[0087] Example 6

[0088] like Figure 14 The figure shows another embodiment of a combined pile disclosed in this utility model, including: two sections of first irregular corner solid square piles 20 and one or more sections of second irregular corner solid square piles 21. The number of second irregular corner solid square piles 21 in the figure is 1 section, but it can also be set to multiple sections as needed.

[0089] The first irregular corner solid square pile 20 adopts the irregular corner solid square pile described in Embodiment 2 of this application, that is, the end of the square segment 10 at one end of the first irregular corner solid square pile is provided with a columnar connecting segment 12.

[0090] The second irregular corner solid square pile 21 adopts the irregular corner solid square pile described in Embodiment 1 of this application, that is, the ends of the square segments 10 at both ends of the second irregular corner solid square pile 21 are provided with columnar connecting segments 12.

[0091] The first irregular-shaped corner solid square pile 20 and the second irregular-shaped corner solid square pile 21 are provided with a column-shaped connecting section 12, one end of which is provided with an end plate and / or a mechanical connector;

[0092] Two sections of the first irregular-shaped corner solid square pile 20 are located at both ends of the composite pile, and one or more sections of the second irregular-shaped corner solid square pile 21 are located in the middle of the composite pile;

[0093] Two adjacent sections of irregularly shaped solid square piles with corner supports are welded together by end plates at the ends of the column-shaped connecting section 12; or, two adjacent sections of irregularly shaped solid square piles with corner supports are anchored together by mechanical connectors at the ends of the column-shaped connecting section 12; or, two adjacent sections of irregularly shaped solid square piles with corner supports are welded together by end plates at the ends of the column-shaped connecting section 12 and anchored together by mechanical connectors. This composite pile can be used as a friction pile, an end-bearing friction pile, a friction-end-bearing pile, and an end-bearing pile.

[0094] Example 7

[0095] like Figure 15 The illustration shows another embodiment of a combined pile disclosed in this utility model. The difference between this embodiment and the combined pile in Embodiment 6 is that, in this embodiment, the lower end of the first irregularly shaped corner solid square pile 20 is further provided with a pile tip to reduce resistance during pile driving and facilitate pile driving. Simultaneously, the pile tip 15 serves a guiding function to ensure the accuracy of pile driving. This combined pile can be used as a friction pile, an end-bearing friction pile, a friction-end-bearing pile, and an end-bearing pile.

[0096] Example 8

[0097] like Figure 16 The figure shown is another embodiment of a combined pile disclosed in this utility model, including: a first irregular corner solid square pile 20 and one or more second irregular corner solid square piles 21;

[0098] The first irregular corner solid square pile 20 adopts the irregular corner solid square pile described in Embodiment 2 of this application, that is, the end of the square segment 10 at one end of the first irregular corner solid square pile 20 is provided with a columnar connecting segment 12.

[0099] The second irregular corner solid square pile 21 adopts the irregular corner solid square pile described in Embodiment 1 of this application, that is, the ends of the square segments 10 at both ends of the second irregular corner solid square pile 21 are provided with columnar connecting segments 12.

[0100] The first irregular-shaped corner solid square pile 20 and the second irregular-shaped corner solid square pile 21 are provided with a column-shaped connecting section 12, one end of which is provided with an end plate and / or a mechanical connector;

[0101] The first irregular-shaped corner solid square pile 20 is located at the lower end of the composite pile. One or more sections of the second irregular-shaped corner solid square pile 21 are connected sequentially to the upper end of the first irregular-shaped corner solid square pile 20. In the figure, the number of the second irregular-shaped corner solid square piles is 2 sections. The specific number can be set as needed.

[0102] Two adjacent sections of irregularly shaped corner solid square piles are welded together by end plates at the ends of the column-shaped connecting section 12; or, two adjacent sections of irregularly shaped corner solid square piles are anchored together by mechanical connectors at the ends of the column-shaped connecting section 12; or, two adjacent sections of irregularly shaped corner solid square piles are welded together by end plates at the ends of the column-shaped connecting section 12 and anchored together by mechanical connectors. This composite pile can be used as a friction end-bearing pile and an end-bearing pile.

[0103] Example 9

[0104] like Figure 17 The illustration shows another embodiment of a combined pile disclosed in this utility model. The difference between this embodiment and the combined pile in Embodiment 8 is that, in this embodiment, the lower end of the first irregularly shaped corner solid square pile 20 is further provided with a pile tip to reduce resistance during pile driving and facilitate pile driving. Simultaneously, the pile tip 15 serves a guiding function to ensure the accuracy of pile driving. This combined pile can be used as a friction end-bearing pile and an end-bearing pile.

[0105] Example 10

[0106] like Figure 18 The figure shown is another embodiment of a combined pile disclosed in this utility model, including: two or more sections of solid square piles with second irregular support corners 21;

[0107] The second irregular corner solid square pile 21 adopts the irregular corner solid square pile described in Embodiment 1 of this application, that is, the ends of the square segments 10 at both ends of the second irregular corner solid square pile 21 are provided with columnar connecting segments 12.

[0108] The second irregular corner solid square pile 21 is provided with an end plate and / or mechanical connector at the end of the column-shaped connecting section 12;

[0109] The two sections of the second irregularly shaped solid square pile 21 are welded together by end plates at the ends of the column-shaped connecting section 12; or, the two sections of the second irregularly shaped solid square pile 21 are anchored together by mechanical connectors at the ends of the column-shaped connecting section 12; or, the two sections of the second irregularly shaped solid square pile 21 are welded together by end plates at the ends of the column-shaped connecting section 12 and anchored together by mechanical connectors. This composite pile can be used as a friction pile and an end-bearing friction pile.

[0110] Example 11

[0111] like Figure 19 The illustration shows another embodiment of a combined pile disclosed in this utility model. The difference between this embodiment and the combined pile in Embodiment 10 is that, in this embodiment, the lower end of the second irregularly shaped corner solid square pile 21 is further provided with a pile tip to reduce resistance during pile driving and facilitate pile driving. Simultaneously, the pile tip 15 serves a guiding function to ensure the accuracy of pile driving. This combined pile can be used as a friction pile or an end-bearing friction pile.

[0112] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A solid square pile with irregular corner support, comprising a pile body (1), wherein the pile body (1) comprises square segments (10) with square cross-sections and irregular segments (11) with irregular cross-sections, which are alternately arranged along the length of the pile body (1), wherein the irregular segment (11) comprises a cylindrical portion (110) with a circular cross-section and a first protrusion (111) extending radially outward from the outer side of the cylindrical portion (110), wherein the position of the first protrusion (111) corresponds to the position of the diagonal of the cross-section of the square segment (10); the diameter of the cylindrical portion (110) is less than or equal to the side length of the square segment (10); and both ends of the pile body (1) are the square segments (10); characterized in that: The square segment (10) located at one or both ends of the pile body (1) is also provided with a columnar connecting segment (12), the outer diameter of the columnar connecting segment (12) is less than or equal to the side length of the square segment (10), the outer side of the columnar connecting segment (12) is provided with a skirt plate (18) and / or the end of the columnar connecting segment (12) is provided with an end plate (19). The irregular segment (11) further includes at least one second protrusion (13); the cross-sectional shape of the second protrusion (13) includes two first sides (130) symmetrically arranged with respect to the midline of the cross-section of the square segment and a second side (131) flush with the edge line of the cross-section of the square segment. One end of the first side (130) intersects the cross-section of the cylindrical part, and the other end intersects the end of the second side (131); the two first sides (130) are parallel to each other or the distance between the two first sides (130) gradually decreases outward along the radial direction of the cylindrical part (110).

2. The irregularly shaped corner solid square pile according to claim 1, characterized in that: The length of the cylindrical connecting section (12) is 50-100mm.

3. The irregularly shaped corner solid square pile according to claim 1, characterized in that: The cross-sectional shape of the first protrusion (111) includes two angled sides (112) symmetrically arranged with respect to the diagonal of the cross-section of the square segment and a connecting side (113) connecting one end of the two angled sides (112). The other end of the angled side (112) intersects with the cross-section of the cylindrical part (110).

4. The irregularly shaped corner solid square pile according to claim 3, characterized in that: The two included sides (112) and the connecting side (113) form a protruding angle, the angle of which is greater than or equal to 90°.

5. The irregularly shaped corner solid square pile according to claim 1, characterized in that: The length of the square segment (10) is ≥400mm, and the distance between the centers of two adjacent square segments (10) is ≤2000mm.

6. The irregularly shaped corner solid square pile according to claim 1, characterized in that: It also includes main bars (14) and stirrups wrapped around the main bars (14), and the main bars (14) are arranged in a circular or polygonal shape; When the main reinforcement (14) is arranged in a polygonal shape, the distance between the main reinforcement (14) near the protrusion and the pile axis is greater than the distance between the other main reinforcements and the pile axis.

7. The irregularly shaped corner solid square pile according to claim 1, characterized in that: The pile body (1) is also provided with a pile tip (15) at one end.

8. The irregularly shaped corner solid square pile according to claim 1, characterized in that: A first inclined transition surface (16) is provided between the square segment (10) and the irregular segment (11). A second inclined transition surface (17) is provided between the cylindrical connecting section (12) and the square section (10).

9. The irregularly shaped corner solid square pile according to claim 1, characterized in that: The included angles of the four sides of the cross section of the square segment (10) are rounded.

10. A composite pile, characterized in that, include: Two sections of solid square piles with first irregular corner supports (20); The first irregular corner solid square pile (20) adopts the irregular corner solid square pile as described in any one of claims 1 to 9, and the end of the square segment (10) at one end of the first irregular corner solid square pile (20) is provided with a columnar connecting segment (12). The first irregular corner solid square pile (20) is provided with a column-shaped connecting section (12) and an end plate and / or mechanical connector at one end; The two sections of the first irregular corner solid square pile (20) are welded together by the end plate at the end of the column connecting section (12); or, the two sections of the first irregular corner solid square pile (20) are anchored together by the mechanical connector at the end of the column connecting section (12); or, the two sections of the first irregular corner solid square pile (20) are welded together by the end plate at the end of the column connecting section (12) and anchored together by the mechanical connector.

11. A composite pile, characterized in that, include: Two sections of first irregular corner solid square piles (20) and one or more sections of second irregular corner solid square piles (21); The first irregular corner solid square pile (20) adopts the irregular corner solid square pile as described in any one of claims 1 to 9, and the end of the square segment (10) at one end of the first irregular corner solid square pile (20) is provided with a columnar connecting segment (12). The second irregular corner solid square pile (21) adopts the irregular corner solid square pile as described in any one of claims 1 to 9, and the ends of the square segments (10) at both ends of the second irregular corner solid square pile (21) are provided with column-shaped connecting segments (12). The first irregular corner solid square pile (20) and the second irregular corner solid square pile (21) are provided with a column-shaped connecting section (12) with an end plate and / or mechanical connector at one end; Two sections of the first irregular-shaped corner solid square pile (20) are located at both ends of the composite pile, and one or more sections of the second irregular-shaped corner solid square pile (21) are located in the middle of the composite pile; The adjacent sections of irregular corner solid square piles are welded together by the end plate at the end of the column connecting section (12); or, the adjacent sections of irregular corner solid square piles are anchored together by the mechanical connector at the end of the column connecting section (12); or, the adjacent sections of irregular corner solid square piles are welded together by the end plate at the end of the column connecting section (12) and anchored together by the mechanical connector.

12. A composite pile, characterized in that, include: A section of solid square pile with first irregular corner (20) and one or more sections of solid square pile with second irregular corner (21); The first irregular corner solid square pile (20) adopts the irregular corner solid square pile as described in any one of claims 1 to 9, and the end of the square segment (10) at one end of the first irregular corner solid square pile (20) is provided with a columnar connecting segment (12). The second irregular corner solid square pile (21) adopts the irregular corner solid square pile as described in any one of claims 1 to 9, and the ends of the square segments (10) at both ends of the second irregular corner solid square pile (21) are provided with column-shaped connecting segments (12). The first irregular corner solid square pile (20) and the second irregular corner solid square pile (21) are provided with a column-shaped connecting section (12) with an end plate and / or mechanical connector at one end; The first irregular corner solid square pile (20) is located at the lower end of the composite pile, and one or more sections of the second irregular corner solid square pile (21) are connected to the upper end of the first irregular corner solid square pile (20). The adjacent sections of irregular corner solid square piles are welded together by the end plate at the end of the column connecting section (12); or, the adjacent sections of irregular corner solid square piles are anchored together by the mechanical connector at the end of the column connecting section (12); or, the adjacent sections of irregular corner solid square piles are welded together by the end plate at the end of the column connecting section (12) and anchored together by the mechanical connector.

13. A composite pile, characterized in that, include: Two or more sections of solid square pile with second irregular support corner (21); The second irregular corner solid square pile (21) adopts the irregular corner solid square pile as described in any one of claims 1 to 9, and the ends of the square segments (10) at both ends of the second irregular corner solid square pile (21) are provided with column-shaped connecting segments (12). The second irregular corner solid square pile (21) is provided with a column-shaped connecting section (12) and an end plate and / or mechanical connector at the end; The two sections of the second irregular corner solid square pile (21) are welded together by the end plate at the end of the column connecting section (12); or, the two sections of the second irregular corner solid square pile (21) are anchored together by the mechanical connector at the end of the column connecting section (12); or, the two sections of the second irregular corner solid square pile (21) are welded together by the end plate at the end of the column connecting section (12) and anchored together by the mechanical connector.

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