Splicing structure of concrete pile and concrete pile

Abstract

The utility model relates to a splicing structure of a concrete pile, which is arranged between splicing surfaces of two adjacent concrete pile bodies, and comprises a convex rib and a slot which are arranged on the splicing surfaces, and the convex rib and the slot can be inserted and matched with each other; the splicing piece is characterized in that only one convex rib is arranged on one splicing face in the length direction, only one inserting groove is formed in the other splicing face in the length direction, the outer surface of each convex rib is an arc-shaped outer cambered surface, the inner surface of each inserting groove is an arc-shaped inner cambered surface, the inner cambered surface of each inserting groove is an inferior arc, and the outer surface of each convex rib is an arc-shaped inferior arc. The outer cambered surface of the convex rib can be attached to the inner cambered surface of the slot, and the height of the convex rib is larger than the depth of the slot. Similar ball head connection is formed between the two piles, the height of the convex ribs is larger than the depth of the inserting grooves, the two piles oppositely form an angle, pile bodies cannot interfere with each other and can still be spliced together through the convex ribs and the inserting grooves, and the construction precision is reduced. The utility model further relates to a concrete pile.

Description

Technical Field

[0001] The utility model belongs to the technical field of pile foundation engineering of various building structure systems, and in particular relates to a concrete pile splicing structure and a concrete pile. Background Art

[0002] The improvement of large underground buildings, slopes, tunnels, port and wharf walls, and river bank protection, etc., all of these buildings require temporary or permanent enclosure of their own foundations or the foundations of surrounding buildings during construction.

[0003] There is a splicing wall that is a bank protection wall composed of rectangular piles, H-type supporting piles or U-type sheet piles (also called "J"-shaped sheet piles) connected to each other in sequence through a rib groove plug-in structure. The pile body has two opposite splicing surfaces for splicing. Taking a rectangular pile as an example, its splicing surface is two opposite side surfaces, taking a U-type sheet pile as an example, its splicing surface is the side surface of two opposite flanges, and taking an H-type supporting pile as an example, its splicing surface is the side surface of two pairs of flanges spaced opposite to each other in front and back. For example, a Chinese utility model patent "H-type supporting pile connection structure" with patent number ZL201320461012.5 (publication number CN203559411U) discloses an H-type pile used for maintaining a wall. For example, the Chinese utility model patent "A concrete sheet pile with waterproof joints" with patent number ZL201220102189.1 (publication number CN202543900U) discloses a U-shaped sheet pile with a rib-groove plug-in structure. Its main improvement is to fill the gap of the rib-groove plug-in structure with rubber or plastic caulking sealing material.

[0004] Among them, the cross section of the convex rib in the rib-slot plug-in structure is a trapezoid with a small outside and a large inside, and the cross section of the slot in the rib-slot plug-in structure is a trapezoid with a large outside and a small inside. The continuous wall formed by splicing concrete piles with the rib-slot plug-in structure has very high requirements for the precision of piling. It is necessary to ensure that the rib-slot structures correspond to each other and insert each other after piling. However, in the actual construction process, it is difficult for the two to correspond and plug into each other. It is important that when encountering a splicing wall, a certain degree of turning is required, which makes it impossible for the rib-slot plug-in structures of two adjacent concrete piles to be plugged together, which also leads to problems in the connection between the two adjacent piles, affecting the stability of the wall.

[0005] In summary, the existing splicing structure of concrete piles used to construct splicing walls needs to be further improved. Utility Model Content

[0006] The first technical problem to be solved by the utility model is to provide a concrete pile splicing structure with a reasonable structure, which is conducive to splicing two adjacent piles together to form a continuous wall, in response to the above-mentioned existing technical status. Even if the two adjacent concrete piles are at an angle to each other, they can be spliced ​​together through the splicing structure, thereby reducing construction requirements and facilitating the construction of continuous walls.

[0007] The technical solution adopted by the utility model to solve the above-mentioned first technical problem is: a splicing structure of a concrete pile, which is arranged between the splicing surfaces of two adjacent concrete pile bodies, including a convex rib arranged on the splicing surface of one of the concrete pile bodies, and a slot arranged on the splicing surface of the other concrete pile body, and the convex rib and the slot can be plugged into each other; it is characterized in that: there is only one convex rib arranged along the length direction on one of the splicing surfaces, and there is only one slot arranged along the length direction on the other splicing surface, the outer surface of the convex rib is an outer arc surface in the shape of an arc, the inner surface of the slot is an inner arc surface in the shape of an arc, the inner arc surface of the slot is a minor arc, the outer arc surface of the convex rib and the inner arc surface of the slot can fit each other, and the height of the convex rib is greater than the depth of the slot.

[0008] As a further improvement, a first concave portion is formed on the outer arc surface of the convex rib, and a second concave portion is formed on the inner arc surface of the slot. When the convex rib is inserted into the slot, the first concave portion and the second concave portion are spliced ​​to form an annular cavity for filling a filler. The first concave portion and the second concave portion can form an annular cavity at the splicing position. In this way, the splicing wall formed by the splicing structure can be poured with concrete in the cavity to form an anti-seepage and water-stopping protective wall, which is suitable for foundation pit enclosure, pipe gallery construction, or revetment with high waterproof requirements.

[0009] As an option for the concrete pile body, the above-mentioned concrete pile body is a rectangular column or a polygonal pile, and the two opposite side surfaces of the concrete pile body are splicing surfaces, and each of the splicing surfaces is provided with one of a convex rib and a slot. One of the splicing surfaces is provided with the convex rib, and the other splicing surface is provided with the slot; or, both of the splicing surfaces are provided with the convex rib; or, both of the splicing surfaces are provided with the slot. The first scheme has both convex ribs and slots on the pile body, which is the best setting method for the convex ribs and slots. This scheme only requires one structural form of concrete pile structure to realize the construction of a continuous anti-seepage water-stopping wall using the pile, and the construction is more convenient.

[0010] As a second option for the concrete pile body, the concrete pile body is a U-shaped sheet pile, which consists of a top, waists located on the left and right sides of the top and extending obliquely downward, and a bottom located below the two waists and extending horizontally outward, each outer side surface of the bottom constitutes the splicing surface, and each of the splicing surfaces is one of the convex ribs and the slots.

[0011] As a third option for the concrete pile body, the concrete pile body is an H-shaped pile, and the concrete pile body includes two flanges arranged front and back, and a web connecting the middle of the two flanges. The two flanges and the web form lateral grooves extending along the length direction of the concrete pile body on the left and right sides of the concrete pile body. The two flanges arranged at intervals front and back on the same side (left or right) are a whole and constitute the splicing surface as a whole. Each splicing surface is provided with one of the convex ribs and the slots. The lateral grooves cut the convex ribs or the slots into two parts spaced front and back. The H-shaped pile itself has lateral grooves. When two adjacent piles are combined by the convex ribs and the slots, the adjacent two lateral grooves form an annular cavity for filling with fillers, which is suitable for the construction of water stop walls. Of course, it can also be left unfilled.

[0012] In order to enable the concrete pile body to be formed by centrifugal means, a through hole is provided in the middle of the concrete pile body.

[0013] Compared with the prior art, the advantages of the splicing structure of the present concrete pile are: there is only one convex rib on one splicing surface and only one slot on the other splicing surface, and the outer surface of the convex rib is an arc-shaped outer arc surface, and the inner surface of the slot is an arc-shaped inner arc surface. When the two piles are spliced, the outer arc surface of the convex rib and the inner arc surface of the slot can fit each other, so that a similar ball head connection is formed between the two piles. The height of the convex rib is greater than the depth of the slot. The two piles are at an angle to each other, and the pile bodies will not interfere with each other. Therefore, even if the two piles are not in the same plane (at an angle to each other), the two piles can be spliced ​​together through the convex rib and the slot, reducing the construction accuracy. The inner arc surface is an inferior arc, which is conducive to the angle between the two adjacent piles and is also convenient for molding. It is especially suitable for scenes with tortuous river banks and can enable the revetment to turn at a larger angle.

[0014] The second technical problem to be solved by the present invention is to provide a concrete pile that can adopt the aforementioned splicing structure in response to the above-mentioned existing technical status. Even if two adjacent concrete piles are at an angle to each other, they can be spliced ​​together through the splicing structure, thereby reducing construction requirements and facilitating the construction of continuous walls.

[0015] The first technical solution adopted by the utility model to solve the above-mentioned second technical problem is: a concrete pile, including a concrete pile body with a rectangular or polygonal cross-section, two opposite side surfaces of the concrete pile body are splicing surfaces, one of the two splicing surfaces is provided with a convex rib arranged along the length direction, and the other splicing surface is provided with a slot arranged along the length direction; it is characterized in that: there is only one convex rib and only one slot, the outer surface of the convex rib is an outer arc surface in the shape of an arc, the inner surface of the slot is an inner arc surface in the shape of an arc, the outer arc surface of the convex rib and the inner arc surface of the slot match each other, and the height of the convex rib is greater than the depth of the slot.

[0016] Preferably, the first maximum width of the rib is greater than or equal to half of the width of the joint surface; the second maximum width of the slot is greater than or equal to one third of the width of the joint surface and less than the first maximum width of the rib. The aforementioned rib and slot size requirements make the size of the arc-shaped rib and the arc-shaped slot as large as possible, increasing the strength of the joint between two adjacent piles, while also making it easier for the two adjacent piles to form an angle with each other, further reducing the construction accuracy requirements.

[0017] The second technical solution adopted by the utility model to solve the above-mentioned second technical problem is: a concrete pile, including a concrete pile body, the concrete pile body is composed of a top, a waist located on the left and right sides of the top and extending obliquely downward, and a bottom located below the two waists and extending horizontally outward, the top and the waist form a positive groove portion that is concave inward, and the outer side surface of each of the bottoms constitutes a splicing surface, of the two splicing surfaces, one of the splicing surfaces is provided with a convex rib arranged along the length direction, and the other splicing surface is provided with a slot arranged along the length direction; it is characterized in that: there is only one convex rib and only one slot, the outer surface of the convex rib is an outer arc surface in the shape of a circular arc, the inner surface of the slot is an inner arc surface in the shape of a circular arc, the outer arc surface of the convex rib and the inner arc surface of the slot match each other, and the height of the convex rib is greater than the depth of the slot.

[0018] For the convenience of the aforementioned U-shaped sheet pile, it can be formed by centrifugal means, the aforementioned top portion is in an outwardly convex arch shape, and the aforementioned positive groove portion is in an inwardly concave semicircular shape.

[0019] Of course, the U-shaped sheet pile may also adopt a conventional shape, that is, the top is a horizontal wall, the waists on both sides are inclined walls, and the cross-section of the positive groove part is a trapezoid.

[0020] The third technical solution adopted by the utility model to solve the above-mentioned second technical problem is: a concrete pile, including a concrete pile body, the concrete pile body includes two flanges arranged in front and back, and a web connecting the middle parts of the two flanges, the two flanges and the web forming lateral groove parts extending along the length direction of the concrete member on the left and right sides of the concrete pile body, the two flanges arranged in front and back at intervals on the same side (left and right) are as a whole and constitute the splicing surface as a whole, one of the two splicing surfaces is provided with a convex rib arranged in the length direction, and the other splicing surface is provided with a slot arranged in the length direction; it is characterized in that: there is only one convex rib and only one slot, the outer surface of the convex rib is an outer arc surface in the shape of an arc, the inner surface of the slot is an inner arc surface in the shape of an arc, the outer arc surface of the convex rib matches the inner arc surface of the slot, the height of the convex rib is greater than the depth of the slot, and the lateral groove part cuts the convex rib or the slot into two parts spaced in front and back.

[0021] Compared with the prior art, the advantages of the three schemes of concrete piles are: they are conducive to forming the aforementioned splicing method. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the first embodiment of the utility model (two adjacent piles are in a straight state);

[0023] Figure 2 This is a schematic diagram of the first embodiment of the utility model (two adjacent piles are at an angle to each other);

[0024] Figure 3 This is a schematic diagram of the second embodiment of the utility model (two adjacent piles are in a straight state);

[0025] Figure 4 This is a schematic diagram of the second embodiment of the utility model (two adjacent piles are at an angle to each other);

[0026] Figure 5 A three-dimensional schematic diagram of a concrete pile in the second embodiment of the utility model Figure 1 ;

[0027] Figure 6 A three-dimensional schematic diagram of a concrete pile in the second embodiment of the utility model Figure 2 ;

[0028] Figure 7 It is a three-dimensional schematic diagram of a third embodiment of the utility model;

[0029] Figure 8 It is a schematic diagram of the three-dimensional structure of the fourth embodiment of the utility model. DETAILED DESCRIPTION

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0031] like Figure 1 , 2 The figure shows the first embodiment of the splicing structure of concrete piles.

[0032] A splicing structure of a concrete pile. The concrete pile body designed in this embodiment takes a rectangular pile as an example.

[0033] A splicing structure of a concrete pile is arranged between the splicing surfaces S of two adjacent concrete pile bodies 1, wherein the concrete pile includes a concrete pile body 1 with a rectangular or polygonal cross-section, and two opposite side surfaces of the concrete pile body 1 are splicing surfaces S. Among the two splicing surfaces S, one splicing surface S is provided with a convex rib 2 arranged along the length direction, and the other splicing surface S is provided with a slot 3 arranged along the length direction; the convex rib 2 and the slot 3 can be plugged into each other.

[0034] There is only one rib 2 and only one slot 3. The outer surface of the rib 2 is an arc-shaped outer arc surface 2a, and the inner surface of the slot 3 is an arc-shaped inner arc surface 3a. The inner arc surface 3a of the slot 3 is a minor arc. The outer arc surface 2a of the rib 2 and the inner arc surface 3a of the slot 3 match each other, and the height H1 of the rib 2 is greater than the depth H2 of the slot 3.

[0035] The first maximum width d1 of the rib 2 is greater than or equal to half of the width D of the splicing surface S; the second maximum width d2 of the slot 3 is greater than or equal to one third of the width D of the splicing surface S and less than the first maximum width d1 of the rib 2 .

[0036] There is only one convex rib 2 on one splicing surface S, and there is only one slot 3 on the other splicing surface S, and the outer surface of the convex rib 2 is an arc-shaped outer arc surface 2a, and the inner surface of the slot 3 is an arc-shaped inner arc surface 3a. When the two concrete pile bodies 1 are spliced ​​together, the outer arc surface 2a of the convex rib 2 and the inner arc surface 3a of the slot 3 can fit each other, so that a similar ball head connection is formed between the two concrete pile bodies 1. The height of the convex rib 2 is greater than the depth of the slot 3. The two concrete pile bodies 1 are at an angle relative to each other, and the concrete pile bodies 1 will not interfere with each other. Therefore, even if the two concrete pile bodies 1 are not in the same plane (at an angle to each other), the two concrete pile bodies 1 can be spliced ​​together through the convex rib 2 and the slot 3, thereby reducing the construction angle. It is especially suitable for scenes with tortuous river banks, and can enable the revetment to turn at a larger angle. The arrangement of the first recess 2b and the second recess 3b can form an annular cavity P at the splicing position. The splicing wall formed by the splicing structure can be poured with concrete in the cavity P to form an anti-seepage and water-stopping protective wall, which is suitable for foundation pit enclosure, pipeline corridor construction, or revetment with high waterproofing requirements.

[0037] like Figures 3 to 6 FIG. 1 shows a second embodiment of the splicing structure of concrete piles.

[0038] The difference between this embodiment and the first embodiment is that: a first concave recess 2b is formed on the outer arc surface 2a of the convex rib 2, and a second concave recess 3b is formed on the inner arc surface 3a of the slot 3. When the convex rib 2 is inserted into the slot 3, the first recess 2b and the second recess 3b are spliced ​​to form an annular cavity P for filling a filler. The arrangement of the first recess 2b and the second recess 3b can form an annular cavity P at the splicing position. In this way, the splicing wall formed by the splicing structure can be poured with concrete in the cavity P to form an anti-seepage and water-stopping protective wall, which is suitable for foundation pit enclosure, pipe gallery construction, or revetment with high waterproof requirements.

[0039] A centrifugal through hole K is provided in the middle of the concrete pile body 1. The centrifugal through hole K may not be provided.

[0040] like Figure 7The third embodiment of the splicing structure of concrete piles is shown.

[0041] The difference between this embodiment and the first embodiment is that the concrete pile body 1 is a U-shaped sheet pile, and the concrete pile body 1 is composed of a top 11, a waist 12 located on the left and right sides of the top 11 and extending downwardly obliquely, and a bottom 13 located below the two waists 12 and extending outward horizontally. The top 11 and the waist 12 surround a positive groove portion 14 that is positively concave inward, the top 11 is an outwardly convex arch, and the positive groove portion 14 is an inwardly concave semicircle. The outer side surface of each of the bottoms 13 constitutes a splicing surface S, and one of the two splicing surfaces S is provided with a convex rib 2 arranged along the length direction, and the other splicing surface S is provided with a slot 3 arranged along the length direction; there is only one convex rib 2 and only one slot 3, the outer surface of the convex rib 2 is an outer arc surface 2a in the shape of a circular arc, and the inner surface of the slot 3 is an inner arc surface 3a in the shape of a circular arc, the outer arc surface 2a of the convex rib 2 matches the inner arc surface 3a of the slot 3, and the height H1 of the convex rib 2 is greater than the depth H2 of the slot 3.

[0042] like Figure 8 FIG. 4 shows a fourth embodiment of the splicing structure of concrete piles.

[0043] The difference between this embodiment and the first embodiment is that the concrete pile body 1 is an H-shaped pile, the concrete pile body 1 includes two flanges 1a arranged front and back, and a web 1b connecting the middle parts of the two flanges 1a, the two flanges 1a and the web 1b form a lateral groove portion 1c extending along the length direction of the concrete pile body 1 on the left and right sides of the concrete pile body 1, and the two flanges 1a arranged front and back at intervals on the same side (left and right) are as a whole and constitute the splicing surface S as a whole, one of the two splicing surfaces S is provided with a convex rib 2 arranged along the length direction, and the other splicing surface S is provided with a slot 3 arranged along the length direction; there is only one convex rib 2 and only one slot 3, the outer surface of the convex rib 2 is an outer arc surface 2a in the shape of a circular arc, and the inner surface of the slot 3 is an inner arc surface 3a in the shape of a circular arc, the outer arc surface 2a of the convex rib 2 matches the inner arc surface 3a of the slot 3, the height H1 of the convex rib 2 is greater than the depth H2 of the slot 3, and the lateral groove portion 1c cuts the convex rib 2 or the slot 3 into two parts spaced front and back.

[0044] The first maximum width d1 of the rib 2 is greater than or equal to half of the width D of the splicing surface S; the second maximum width d2 of the slot 3 is greater than or equal to one third of the width D of the splicing surface S and less than the first maximum width d1 of the rib 2 .

[0045] In summary, the continuous wall using this pile has greatly reduced the accuracy requirements for the pile body to be inserted into the ground, which is beneficial to the construction of the continuous wall, while also reducing construction costs and time.

[0046] It should be noted that in the description of this embodiment, the terms "front, back", "left, right", "inside, outside", "upper, lower" and the like indicating directions or positional relationships are all based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. The terms "install", "connect", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A concrete pile splicing structure, arranged between the splicing surfaces (S) of two adjacent concrete pile bodies (1), comprising a convex rib (2) arranged on the splicing surface (S) of one of the concrete pile bodies (1), and a slot (3) arranged on the splicing surface of the other concrete pile body (1), wherein the convex rib (2) and the slot (3) can be plugged into each other; characterized in that: There is only one convex rib (2) arranged along the length direction on one of the splicing surfaces (S), and there is only one slot (3) arranged along the length direction on the other splicing surface (S); the outer surface of the convex rib (2) is an outer arc surface (2a) in the shape of a circular arc, and the inner surface of the slot (3) is an inner arc surface (3a) in the shape of a circular arc; the inner arc surface (3a) of the slot (3) is a minor arc; the outer arc surface (2a) of the convex rib (2) and the inner arc surface (3a) of the slot (3) can fit each other; and the height (H1) of the convex rib (2) is greater than the depth (H2) of the slot.

2. The splicing structure of concrete piles according to claim 1 is characterized in that: A first concave portion (2b) is formed on the outer arc surface (2a) of the convex rib (2), and a second concave portion (3b) is formed on the inner arc surface (3a) of the slot (3). When the convex rib (2) is inserted into the slot (3), the first concave portion (2b) and the second concave portion (3b) are spliced ​​to form an annular cavity (P) for filling a filler.

3. The concrete pile splicing structure according to claim 1 is characterized in that: The concrete pile body (1) is a rectangular column or a polygonal pile. Two opposite side surfaces of the concrete pile body (1) are splicing surfaces. Each splicing surface (S) is provided with one of the convex rib (2) and the slot (3).

4. The concrete pile splicing structure according to claim 1, characterized in that: The concrete pile body (1) is a U-shaped sheet pile, and is composed of a top (11), waists (12) located on the left and right sides of the top (11) and extending obliquely downward, and a bottom (13) located below the two waists (12) and extending horizontally outward, wherein the outer side surface of each bottom (13) constitutes the splicing surface (S), and each splicing surface (S) is provided with one of the convex rib (2) and the slot (3).

5. The concrete pile splicing structure according to claim 1, characterized in that: The concrete pile body (1) is an H-shaped pile. The concrete pile body (1) comprises two flanges (1a) arranged front and rear, and a web (1b) connecting the middle parts of the two flanges (1a). The two flanges (1a) and the web (1b) form a lateral groove portion (1c) extending along the length direction of the concrete pile body (1) on the left and right sides of the concrete pile body (1). The two flanges (1a) arranged front and rear at intervals on the same side are a whole and constitute the splicing surface (S) as a whole. Each of the splicing surfaces (S) is provided with one of the convex rib (2) and the slot (3). The lateral groove portion (1c) cuts the convex rib (2) or the slot (3) into two parts spaced front and rear.

6. The concrete pile splicing structure according to claim 1, characterized in that: A centrifugal through hole (K) is provided in the middle of the concrete pile body (1).

7. A concrete pile, comprising a concrete pile body (1) with a rectangular or polygonal cross section, wherein two opposite side surfaces of the concrete pile body (1) are splicing surfaces (S), one of the two splicing surfaces (S) is provided with a convex rib (2) arranged along the length direction, and the other splicing surface (S) is provided with a slot (3) arranged along the length direction; characterized in that: There is only one convex rib (2) and only one slot (3); the outer surface of the convex rib (2) is an arc-shaped outer arc surface (2a), and the inner surface of the slot (3) is an arc-shaped inner arc surface (3a); the outer arc surface (2a) of the convex rib (2) and the inner arc surface (3a) of the slot (3) match each other; and the height (H1) of the convex rib (2) is greater than the depth (H2) of the slot (3).

8. The concrete pile according to claim 7, characterized in that: An inwardly concave first recess (2b) is formed on the outer arc surface (2a) of the convex rib (2), and an inwardly concave second recess (3b) is formed on the inner arc surface (3a) of the slot (3).

9. The concrete pile according to claim 7, characterized in that: The first maximum width (d1) of the convex rib (2) is greater than or equal to half the width (D) of the splicing surface (S); the second maximum width (d2) of the slot (3) is greater than or equal to one third of the width of the splicing surface (S) and is less than the first maximum width (d1) of the convex rib (2).

10. A concrete pile, comprising a concrete pile body (1), the concrete pile body (1) comprising a top (11), waists (12) located on the left and right sides of the top (11) and extending obliquely downward, and a bottom (13) located below the two waists (12) and extending horizontally outward, the top (11) and the waists (12) enclose a positive groove portion (14) that is concave inward, the outer side surface of each of the bottoms (13) constitutes a splicing surface (S), one of the two splicing surfaces (S) is provided with a convex rib (2) arranged along the length direction, and the other splicing surface (S) is provided with a slot (3) arranged along the length direction; characterized in that: There is only one convex rib (2) and only one slot (3); the outer surface of the convex rib (2) is an arc-shaped outer arc surface (2a), and the inner surface of the slot (3) is an arc-shaped inner arc surface (3a); the outer arc surface (2a) of the convex rib (2) and the inner arc surface (3a) of the slot (3) match each other; and the height (H1) of the convex rib (2) is greater than the depth (H2) of the slot (3).

11. The concrete pile according to claim 10, characterized in that: An inwardly concave first recess (2b) is formed on the outer arc surface (2a) of the convex rib (2), and an inwardly concave second recess (3b) is formed on the inner arc surface (3a) of the slot (3).

12. The concrete pile according to claim 10, characterized in that: The top (11) is in an outwardly convex arch shape, and the positive groove portion (14) is in an inwardly concave semicircular shape.

13. A concrete pile, comprising a concrete pile body (1), wherein the concrete pile body (1) comprises two flanges (1a) arranged front and rear, and a web (1b) connecting the middle parts of the two flanges (1a), the two flanges (1a) and the web (1b) forming lateral grooves (1c) extending along the length direction of the concrete pile body (1) on the left and right sides of the concrete pile body (1), the two flanges (1a) arranged front and rear at intervals on the same side are as a whole and constitute the splicing surface (S) as a whole, and one of the two splicing surfaces (S) is provided with a rib (2) arranged along the length direction, and the other splicing surface (S) is provided with a slot (3) arranged along the length direction; characterized in that: There is only one convex rib (2) and only one slot (3); the outer surface of the convex rib (2) is an arc-shaped outer arc surface (2a), and the inner surface of the slot (3) is an arc-shaped inner arc surface (3a); the outer arc surface (2a) of the convex rib (2) and the inner arc surface (3a) of the slot (3) match each other; the height (H) of the convex rib (2) is greater than the depth (H2) of the slot (3); and the lateral groove portion (1c) cuts the convex rib (2) or the slot (3) into two parts spaced apart from each other.

14. The concrete pile according to claim 13, characterized in that: The first maximum width (d1) of the convex rib (2) is greater than or equal to half the width (D) of the splicing surface (S); the second maximum width (d2) of the slot (3) is greater than or equal to one third of the width of the splicing surface (S) and is less than the first maximum width (d1) of the convex rib (2).

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