Precast concrete special-shaped square pile

Abstract

The utility model relates to a precast concrete special-shaped square pile, and relates to the technical field of precast piles, the precast concrete special-shaped square pile comprises a plurality of square sections and a plurality of cylindrical sections which are fixedly connected, the square sections and the cylindrical sections are distributed in a staggered mode, a metal sleeve is arranged between the square sections and the cylindrical sections, one end of the sleeve is square, the other end of the sleeve is cylindrical, and the square sections and the cylindrical sections are fixedly connected. The square section is sleeved with the square portion of the sleeve and tightly attached to the square section, and the cylindrical section is sleeved with the cylindrical portion of the sleeve and tightly attached to the cylindrical section. The corners of the square sections are protected through the sleeves made of the metal materials, so that the concrete structure is not prone to falling off when being impacted, the integrity of the pile body structure is improved, and the corners of the pile body are not prone to being damaged; when the static press clamps the pile body, the contact part is the outer wall of the sleeve, so that the corners of the square section are not easy to damage, and the concrete structural integrity of the pile body is improved.

Description

Technical Field

[0001] This application relates to the field of precast pile technology, and in particular to a precast concrete irregular square pile. Background Technology

[0002] Precast piles are piles prefabricated in a factory. During on-site construction, the piles are simply inserted into the pile hole to complete the construction, offering the advantage of rapid construction. Because precast piles are prefabricated in the factory, various functional structures, detachable structures, or reinforcement structures can be incorporated to improve various performance characteristics.

[0003] The utility model patent with publication number CN220868177U discloses an irregularly shaped corner solid square pile, including: a pile body, the pile body including square segments and irregular segments with cross-sectional shapes that are alternately arranged along the length of the pile body; the irregular segment includes at least a cylindrical part with a circular cross-section, the diameter of the cylindrical part being less than or equal to the side length of the square segment; the two ends of the pile body are square segments. The utility model discloses an irregularly shaped solid square pile with corner supports. The square section allows for greater friction between the pile and the soil. The cross-sectional area of ​​the irregularly shaped section is smaller than that of the square section. During pile driving, a soil plugging effect occurs, with soil filling the area around the irregularly shaped section and between the two square sections, thus increasing the pile's bearing capacity. The outer perimeter of the columnar part is circular. For solid piles, compared to non-circular piles, circular piles have better bearing capacity, bending resistance, and shear resistance. The columnar part gives the pile better performance, makes better use of materials, and saves resources. The square section has a longer perimeter, which facilitates the clamping and driving of the pile by a static pressure machine.

[0004] Regarding the aforementioned technologies, the inventors believe that the corners at both ends of the square segment are made of concrete, which makes it easy to damage the corners during transportation and pile driving, resulting in structural incompleteness. The corners of the square segment are also easily damaged when the static pressure machine clamps the pile body, and improvements are needed. Utility Model Content

[0005] This application provides a precast concrete irregular square pile, which uses metal plates to protect the two ends and corners of the square segment to prevent damage to the corners of the square segment.

[0006] This application provides a precast concrete irregular-shaped square pile, which adopts the following technical solution:

[0007] A precast concrete irregular square pile includes several square segments and several columnar segments fixedly connected, the square segments and columnar segments are staggered, and a metal sleeve is provided between the square segments and columnar segments. One end of the sleeve is square and the other end of the sleeve is columnar. The square part of the sleeve is fitted over the square segment and close to the square segment, and the columnar part of the sleeve is fitted over the columnar segment and close to the columnar segment.

[0008] By adopting the above technical solution, the metal sleeve protects the corners of the square section, thus preventing the concrete structure from easily detaching upon impact. When the static pressure machine clamps the pile, the contact area is the outer wall of the sleeve, which further reduces the risk of damage to the corners of the square section and improves the integrity of the pile's concrete structure.

[0009] Optionally, the sleeve includes half sleeve one and half sleeve two, which are combined to form a sleeve.

[0010] By adopting the above technical solution, the sleeve is divided into left and right parts to facilitate the installation of the sleeve.

[0011] Optionally, the cylindrical part of the first half-set is fixed with a positioning piece, and the cylindrical part of the second half-set is provided with a positioning groove for the positioning piece to be inserted.

[0012] By adopting the above technical solution, the combination of positioning piece and positioning groove facilitates the assembly of half set one and half set two.

[0013] Optionally, rivets are provided on the inner walls of the positioning piece and the positioning groove, and the inner walls of the positioning piece and the positioning groove are fixed by the rivets.

[0014] By adopting the above technical solution, the installation speed is higher than that of conventional bolt fixing, and the stability is high. There will be no problem of bolt loosening, and the rivet protrudes less from the surface of the positioning plate than the bolt.

[0015] Optionally, the outer wall of the cylindrical segment is provided with a positioning hole for the rivet end to be inserted.

[0016] By adopting the above technical solution, the positioning hole limits the end of the rivet, which facilitates the positioning of the rivet installation position and prevents the sleeve from falling down when the pile is in a vertical position.

[0017] Optionally, the square portion of half-set one and the square portion of half-set two are fixed together by welding.

[0018] By adopting the above technical solution and fixing it by welding, the square part of half sleeve one and the square part of half sleeve two can be completely fixed without the risk of separation. After grinding, the weld seam will not protrude from the surface of the sleeve, or the height of the protrusion from the surface of the sleeve will be low, and the increase in the outer wall size of the square part of the sleeve will not be significant. Therefore, it will not affect the lowering operation of the pile body in the pile hole.

[0019] Optionally, the wall thickness of the square portion of the sleeve is 1-2 mm.

[0020] By adopting the above technical solution, the square part of the sleeve within this wall thickness range can provide a protective effect, and because it is a thin-walled structure, the increase in the outer wall size of the square section is not significant and will not affect the process of lowering the pile into the pile hole.

[0021] Optionally, a reinforcing cage is fixed inside the square segment and the cylindrical segment. The reinforcing cage includes a square ring and a circular ring. The square ring is located inside the square segment, and the circular ring is located inside the cylindrical segment. The square ring and the circular ring are fixed together by connecting bars.

[0022] By adopting the above technical solution and setting up a steel reinforcement structure corresponding to the shape of the square and columnar segments, the structural strength of the square and columnar segments is improved.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The corners of the square section are protected by a metal sleeve, so that the concrete structure is less likely to fall off when it is impacted, thus improving the integrity of the pile structure.

[0025] 2. When the static pressure machine clamps the pile, the contact part is the outer wall of the sleeve, so it is not easy to damage the corners of the square section, thus improving the integrity of the concrete structure of the pile.

[0026] 3. The sleeve and pile body are easy to install, and the production process is convenient and quick. Attached Figure Description

[0027] Figure 1 This is a perspective view of a precast concrete irregular square pile according to an embodiment;

[0028] Figure 2 This is a partial exploded view of an embodiment;

[0029] Figure 3 These are perspective views of half of the first and half of the second embodiment;

[0030] Figure 4 This is a structural diagram of the steel cage in an embodiment.

[0031] Explanation of reference numerals in the attached drawings: 1. Square segment; 2. Columnar segment; 3. Sleeve; 31. Half sleeve one; 32. Half sleeve two; 33. Positioning piece; 34. Positioning groove; 35. Rivet; 21. Positioning hole; 4. Reinforcing cage; 41. Square ring; 42. Circular ring; 43. Connecting bar. Detailed Implementation

[0032] The present application will be further described in detail below with reference to the accompanying drawings.

[0033] Reference Figure 1This embodiment discloses a precast concrete irregular square pile, including several square segments 1 and several columnar segments 2 fixedly connected. The square segments 1 and columnar segments 2 are distributed alternately. Both the upper and lower ends of the pile body are square segments 1. The square segments 1 and columnar segments 2 are made of concrete and are integrally formed and fixed.

[0034] A metal sleeve 3 is installed between the square segment 1 and the cylindrical segment 2. One end of the sleeve 3 is square, and the other end is cylindrical. The square part of the sleeve 3 fits over and is tightly against the square segment 1, and the cylindrical part of the sleeve 3 fits over and is tightly against the cylindrical segment 2. The wall thickness of the square part of the sleeve 3 is 1-2mm. This wall thickness provides protection, and because it is a thin-walled structure, it does not significantly increase the outer wall size of the square segment 1 and will not affect the process of lowering the pile into the pile hole.

[0035] Reference Figure 2 and Figure 3 To facilitate the installation of sleeve 3, sleeve 3 is divided into two parts, left and right. Sleeve 3 includes half sleeve one 31 and half sleeve two 32. Half sleeve one 31 and half sleeve two 32 are combined to form sleeve 3.

[0036] The cylindrical part of half-set 31 is fixed with a positioning piece 33, and the cylindrical part of half-set 32 ​​has a positioning groove 34 for the positioning piece 33 to be inserted. Rivets 35 pass through the inner walls of the positioning piece 33 and the positioning groove 34, and the inner walls of the positioning piece 33 and the positioning groove 34 are fixed by the rivets 35. The cooperation between the positioning piece 33 and the positioning groove 34 facilitates the assembly of half-set 31 and half-set 32; the installation speed is higher than that of conventional bolt fixing, and the stability is high, avoiding the problem of bolt loosening. The protrusion of the rivet 35 from the surface of the positioning piece 33 is also less than that of a bolt. The outer wall of the cylindrical section 2 has a positioning hole 21 for the end of the rivet 35 to be inserted. The positioning hole 21 limits the end of the rivet 35, facilitating the positioning of the rivet 35 and preventing the sleeve 3 from falling downwards when the pile is in a vertical position.

[0037] The square portions of half-sleeve 1 (31) and half-sleeve 2 (32) are fixed together by welding. The weld is straight and easy to perform. Through welding, the square portions of half-sleeve 1 (31) and half-sleeve 2 (32) can be completely fixed together without the risk of separation. After grinding, the weld does not protrude from the surface of sleeve 3, or the protrusion is very small, and the increase in the outer wall dimension of the square portion of sleeve 3 is not significant. Therefore, it does not affect the lowering operation of the pile in the pile hole.

[0038] Reference Figure 4A reinforcing cage 4 is fixed inside the square segment 1 and the cylindrical segment 2. The reinforcing cage 4 includes a square ring 41 and a circular ring 42. The square ring 41 is located inside the square segment 1, and the circular ring 42 is located inside the cylindrical segment 2. The square ring 41 and the circular ring 42 are fixed together by connecting bars 43. The square ring 41 is located close to the outer wall of the square segment 1, and the circular ring 42 is located close to the outer wall of the cylindrical segment 2. By setting a reinforcing steel structure corresponding to the shape of the square segment 1 and the cylindrical segment 2, the structural strength of the square segment 1 and the cylindrical segment 2 is improved.

[0039] The implementation principle of a precast concrete irregular square pile according to an embodiment of this application is as follows: a square segment 1 and a columnar segment 2 are formed outside the reinforcing cage 4 by casting in a mold. When installing the sleeve 3, the pile body is placed horizontally and raised by shims. The shims are positioned to avoid the installation position of the sleeve 3, which facilitates the installation operation of the sleeve 3. Half sleeve 1 31 and half sleeve 2 32 are fastened to both sides of the pile body, so that the square part of the sleeve 3 fits over the square segment 1 and is close to the square segment 1, and the columnar part of the sleeve 3 fits over the columnar segment 2 and is close to the columnar segment 2. Then, the columnar part of the sleeve 3 is fixed by rivets 35, and the square part of the sleeve 3 is fixed by welding. The whole production process is convenient and quick.

[0040] During transportation and pile driving, the metal sleeve 3 protects the corners of the square section 1, thus preventing concrete detachment from impacts and improving the integrity of the pile structure. When the static pressure machine clamps the pile, the contact area is the outer wall of the sleeve 3, which also prevents damage to the corners of the square section 1, further enhancing the integrity of the pile's concrete structure.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A precast concrete irregular square pile, comprising a plurality of square segments (1) and a plurality of columnar segments (2) fixedly connected, wherein the square segments (1) and columnar segments (2) are staggered, characterized in that: A metal sleeve (3) is provided between the square segment (1) and the cylindrical segment (2). One end of the sleeve (3) is square and the other end is cylindrical. The square part of the sleeve (3) is fitted over the square segment (1) and close to the square segment (1), and the cylindrical part of the sleeve (3) is fitted over the cylindrical segment (2) and close to the cylindrical segment (2).

2. The precast concrete irregular square pile according to claim 1, characterized in that: The sleeve (3) includes a first half sleeve (31) and a second half sleeve (32), which are combined to form the sleeve (3).

3. A precast concrete irregular square pile according to claim 2, characterized in that: The cylindrical part of the first half (31) is fixed with a positioning piece (33), and the cylindrical part of the second half (32) is provided with a positioning groove (34) for the positioning piece (33) to be inserted.

4. A precast concrete irregular square pile according to claim 3, characterized in that: The inner walls of the positioning piece (33) and the positioning groove (34) are provided with rivets (35), and the inner walls of the positioning piece (33) and the positioning groove (34) are fixed by the rivets (35).

5. A precast concrete irregular square pile according to claim 4, characterized in that: The outer wall of the cylindrical section (2) is provided with a positioning hole (21) for the end of the rivet (35) to be inserted.

6. A precast concrete irregular square pile according to claim 2, characterized in that: The square parts of the first half (31) and the square parts of the second half (32) are fixed together by welding.

7. A precast concrete irregular square pile according to claim 1, characterized in that: The square part of the sleeve (3) has a wall thickness of 1-2 mm.

8. A precast concrete irregular square pile according to claim 1, characterized in that: A steel cage (4) is fixed inside the square segment (1) and the column segment (2). The steel cage (4) includes a square ring (41) and a circular ring (42). The square ring (41) is located inside the square segment (1), and the circular ring (42) is located inside the column segment (2). The square ring (41) and the circular ring (42) are fixed together by a connecting bar (43).

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