Connecting structure of concrete square pile

Abstract

The utility model discloses a connecting structure of a concrete square pile, which comprises a bottom pile body (1) and a connecting pile body (2), the connecting structure comprises a seat body (5), a plurality of foundation steel bars (3) which are connected with a steel bar framework in the bottom pile body (1) and protrude out of the top face of the bottom pile body (1), and a plurality of connecting steel bars (4) which are connected with a steel bar framework in the connecting pile body (2) and protrude out of the two ends of the connecting pile body (2). A plurality of waist-shaped holes (6) are formed in the seat body (5); the foundation steel bars (3) and the connecting steel bars (4) are jointly arranged in the kidney-shaped holes (6) in a penetrating mode, and the foundation steel bars (3) and the connecting steel bars (4) are arranged in a staggered mode; damage to the structure of the concrete square pile can be effectively reduced, meanwhile, balanced force transmission is achieved through butt joint of the connecting steel bars and the foundation steel bars, and the concrete square pile has the advantage of being high in structural strength.

Description

Technical Field

[0001] The utility model relates to the field of building construction, in particular to a connection structure of concrete square piles. Background Art

[0002] Pre-tensioned prestressed square piles are hollow cylindrical slender concrete prefabricated components made using pre-tensioned prestressing technology and centrifugal forming methods. They are mainly composed of a square pile body, an end plate and a steel sleeve. They have the characteristics of large bearing capacity, strong seismic resistance and quick construction. For example, the Chinese utility model patent with announcement number CN216108459U discloses a high-strength concrete hollow square pile, which specifically includes a square pile body, a positioning cone head, a docking frame and a threaded docking hole. The docking frame is embedded in another square pile and then a threaded docking hole is provided to achieve connection. On the one hand, this connection method only uses a single docking frame to bear force, and has the disadvantages of low structural strength and uneven force transmission. At the same time, driving the docking thread into the threaded docking hole will cause certain damage to the structure of the pile body, further reducing the structural strength. Utility Model Content

[0003] The purpose of the present invention is to provide a connection structure for concrete square piles, which can effectively reduce damage to the concrete square pile structure itself, and at the same time achieve balanced force transmission by connecting the connecting steel bars and the foundation steel bars, thereby having the characteristics of high structural strength.

[0004] The technical solution of the present utility model: a connection structure of concrete square piles, the concrete square piles include a bottom pile body and a connecting pile body, the connection structure includes a base body, a plurality of foundation steel bars connected to the internal steel bar skeleton of the bottom pile body and protruding from the top surface of the bottom pile body, and a plurality of connecting steel bars connected to the internal steel bar skeleton of the connecting pile body and protruding from both ends of the connecting pile body; a plurality of waist-shaped holes are provided on the base body; the foundation steel bars and the connecting steel bars are jointly inserted into the waist-shaped holes, and the foundation steel bars and the connecting steel bars are staggered; the upper and lower sides of the base body are provided with an enclosure frame adapted to the bottom pile body and the connecting pile body, and a mortar-filled cavity is provided in the enclosure frame.

[0005] In the above-mentioned connection structure of concrete square piles, the foundation steel bars are arranged on the four sides of the bottom pile body, and the positions of the two foundation steel bars on one pair of sides of the bottom pile body are symmetrical about the center of the bottom pile body, and are symmetrical with the positions of the two foundation steel bars on the other pair of sides about the corner line of the bottom pile body; the connecting steel bars are arranged on the four sides of the connecting pile body, and the positions of the two connecting steel bars on one pair of sides of the connecting pile body are symmetrical about the center of the connecting pile body, and are symmetrical with the positions of the two connecting steel bars on the other pair of sides about the corner line of the connecting pile body.

[0006] In the aforementioned connection structure of concrete square piles, the waist-shaped holes include side waist-shaped holes and corner waist-shaped holes.

[0007] In the aforementioned connection structure of concrete square piles, the extension line of the side waist hole is parallel to the side of the bottom pile body.

[0008] In the aforementioned connection structure of concrete square piles, the side portion of the seat body is provided with limiting bolt holes communicating with both ends of the side waist-shaped holes.

[0009] In the aforementioned connection structure of concrete square piles, the extension line of the corner waist-shaped hole is collinear with the diagonal line of the end surface of the bottom pile body.

[0010] In the aforementioned connection structure of concrete square piles, the foundation reinforcement at the corner positions of the bottom pile body is located outside the connection reinforcement at the corner positions of the connecting pile body.

[0011] In the aforementioned connection structure of concrete square piles, the length of the foundation steel bars protruding from the top surface of the bottom pile body and the length of the connection steel bars protruding from the end surface of the connection pile body are greater than the thickness of the base body.

[0012] Compared with the prior art, when docking, the present invention first covers the top surface of the bottom pile body with mortar, and then puts a connecting structure on the bottom pile body to ensure that the foundation steel bars pass through the waist-shaped holes. Then, the upper enclosing frame is filled with mortar, the connecting pile body is hoisted, and the connecting pile body is embedded in the enclosing frame. At the same time, it is ensured that the connecting steel bars are embedded in the waist-shaped holes. The waist-shaped holes limit a group of foundation steel bars and connecting steel bars to ensure that the two are gathered and fit together, and then the steel skeleton of the bottom pile body and the connecting pile body is connected to achieve balanced and reliable force transmission and high structural strength. At the same time, this structure will not cause damage to the concrete square piles during construction, further improving the reliability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 It is a structural diagram of the seat body of the utility model;

[0015] Figure 3 It is a schematic diagram of the distribution of the basic steel bars of the utility model;

[0016] Figure 4 It is a distribution diagram of the connecting steel bars of the utility model;

[0017] Figure 5 This is a schematic diagram of the distribution of the connecting steel bars and the connecting steel bars after connection of the utility model;

[0018] Figure 6 It is a structural schematic diagram of the limiting bolt hole and the side waist hole of the utility model.

[0019] The marks in the accompanying drawings are: 1-bottom pile body; 2-connecting pile body; 3-foundation steel bar; 31-first foundation steel bar; 32-second foundation steel bar; 33-third foundation steel bar; 34-fourth foundation steel bar; 4-connecting steel bar; 41-first connecting steel bar; 42-second connecting steel bar; 43-third connecting steel bar; 44-fourth connecting steel bar; 5-base; 6-waist-shaped hole; 7-limiting bolt hole; 8-enclosing frame; 9-mortar filling cavity; 10-corner waist-shaped hole; 11-side waist-shaped hole. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0021] Example: The connection structure of concrete square piles, as shown in the attached Figure 1 As shown, the concrete square pile includes a bottom pile body 1 and a connecting pile body 2, and the connecting structure includes a metal base body 5. The bottom pile body 1 is pre-formed with 8 foundation steel bars 3 connected to its internal steel skeleton and protruding from the top surface, and the connecting pile body 2 is pre-formed with 8 connecting steel bars 4 connected to its internal steel skeleton and protruding from both ends; as shown in the attached figure Figure 2 As shown, the connection structure includes a base body 5 made of metal, and 8 waist-shaped holes 6 are integrally formed on the base body 5; the foundation steel bars 3 and the connecting steel bars 4 are jointly inserted into the waist-shaped holes 6, and the foundation steel bars 3 and the connecting steel bars 4 are staggered; the upper and lower sides of the base body 5 are integrally formed with an enclosing frame 8 adapted to the bottom pile body 1 and the connecting pile body 2, and the enclosing frame 8 has a mortar filling cavity 9; the foundation steel bars 3 are arranged on the four sides of the bottom pile body 1, and the positions of the two foundation steel bars 3 on one pair of sides of the bottom pile body 1 are symmetrical about the center of the bottom pile body 1, and the positions of the two foundation steel bars 3 on the other pair of sides are symmetrical about the corner axis of the bottom pile body 1, as shown in the attached figure. Figure 3 As shown, the first foundation steel bar 31 is symmetrical about the center of the second foundation steel bar 32, and both are symmetrical with the third foundation steel bar 33 and the fourth foundation steel bar 34 about the corner line axis; the connecting steel bars 4 are arranged on the four sides of the connecting pile body 2, and the positions of the two connecting steel bars 4 on one pair of sides of the connecting pile body 2 are symmetrical about the center of the connecting pile body 2, and are symmetrical with the positions of the two connecting steel bars 4 on the other pair of sides about the corner line axis of the connecting pile body 2, as shown in the attached figure. Figure 4 As shown, the first connecting steel bar 41 is symmetrical about the center of the second connecting steel bar 42, and both are symmetrical about the corner line axis with the third connecting steel bar 43 and the fourth connecting steel bar 44. Figure 5 As shown in the attached Figure 6As shown, the blocking effect between the foundation steel bar 3 and the connecting steel bar 4 after being fitted together can form shear bearing capacity and torsional bearing capacity; the waist-shaped hole 6 includes a side waist-shaped hole 11 and a corner waist-shaped hole 10; the extension line of the side waist-shaped hole 11 is parallel to the side of the bottom pile body 1; the side of the seat body 5 is provided with a limiting bolt hole 7 connected to the two ends of the side waist-shaped hole 11, and bolts are arranged in the limiting bolt hole to limit the foundation steel bar and the connecting steel bar on both sides, further improving the reliability of the connection; the extension line of the corner waist-shaped hole 10 is collinear with the diagonal line of the end face of the bottom pile body 1; the foundation steel bar 3 at the corner position of the bottom pile body 1 is located on the outside of the connecting steel bar 4 at the corner position of the connecting pile body 2, and the force is transmitted with the bottom pile body as the force basis, further improving the shear bearing capacity; the length of the foundation steel bar 3 protruding from the top surface of the bottom pile body 1 and the length of the connecting steel bar 4 protruding from the end face of the connecting pile body 2 are greater than the thickness of the seat body 5, considering the filling thickness of the mortar.

[0022] Working principle: When docking, first cover the top surface of the bottom pile body 1 with mortar, put the connecting structure on the bottom pile body 1, ensure that the foundation steel bars 3 pass through the waist-shaped holes 6, and cover them with a membrane to reduce mortar overflow. Then fill the mortar in the upper enclosing frame 8, hoist the connecting pile body 2, and embed the connecting pile body 2 into the enclosing frame 8. At the same time, ensure that the connecting steel bars 4 are embedded in the waist-shaped holes 6. Finally, drive bolts into the limiting bolt holes 7. The bolts limit a group of foundation steel bars 3 and connecting steel bars 4 in the side waist-shaped holes 11 to ensure that the two are gathered together and fit together, thereby connecting the steel skeletons of the bottom pile body 1 and the connecting pile body 2, realizing balanced and reliable force transmission, and high structural strength. At the same time, this structure will not cause damage to the concrete square piles during construction, further improving the reliability of the structure.

[0023] The above embodiments merely represent implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. Furthermore, in these embodiments, the terms "up," "down," "left," "right," "front," and "back" merely represent relative positions and do not represent absolute positions. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the concept of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A connection structure for concrete square piles, comprising a bottom pile body (1) and a connection pile body (2), characterized in that: The connection structure comprises a seat body (5), a plurality of foundation steel bars (3) connected to the internal steel bar skeleton of the bottom pile body (1) and protruding from the top surface of the bottom pile body (1), and a plurality of connecting steel bars (4) connected to the internal steel bar skeleton of the connecting pile body (2) and protruding from both ends of the connecting pile body (2); a plurality of waist-shaped holes (6) are provided on the seat body (5); the foundation steel bars (3) and the connecting steel bars (4) are jointly inserted into the waist-shaped holes (6), and the foundation steel bars (3) and the connecting steel bars (4) are staggered; the upper and lower sides of the seat body (5) are both provided with an enclosure frame (8) adapted to the bottom pile body (1) and the connecting pile body (2), and a mortar filling cavity (9) is provided in the enclosure frame (8).

2. The connection structure of concrete square piles according to claim 1, characterized in that: The foundation steel bars (3) are arranged on the four sides of the bottom pile body (1), and the positions of the two foundation steel bars (3) on one pair of sides of the bottom pile body (1) are symmetrical about the center of the bottom pile body (1), and are symmetrical about the corner line axis of the bottom pile body (1) with the positions of the two foundation steel bars (3) on the other pair of sides; the connecting steel bars (4) are arranged on the four sides of the connecting pile body (2), and the positions of the two connecting steel bars (4) on one pair of sides of the connecting pile body (2) are symmetrical about the center of the connecting pile body (2), and are symmetrical about the corner line axis of the connecting pile body (2) with the positions of the two connecting steel bars (4) on the other pair of sides.

3. The connection structure of concrete square piles according to claim 1, characterized in that: The waist-shaped holes (6) include side waist-shaped holes (11) and corner waist-shaped holes (10).

4. The connection structure of concrete square piles according to claim 3, characterized in that: The extension line of the side waist hole (11) is parallel to the side of the bottom pile body (1).

5. The connection structure of concrete square piles according to claim 4, characterized in that: The side of the seat body (5) is provided with a limiting bolt hole (7) which is connected with both ends of the side waist hole (11).

6. The connection structure of concrete square piles according to claim 3, characterized in that: The extension line of the angle waist-shaped hole (10) is collinear with the diagonal line of the end face of the bottom pile body (1).

7. The connection structure of concrete square piles according to claim 6, characterized in that: The foundation steel bars (3) at the corners of the bottom pile body (1) are located outside the connecting steel bars (4) at the corners of the connecting pile body (2).

8. The connection structure of concrete square piles according to claim 1, characterized in that: The length of the foundation steel bar (3) protruding from the top surface of the bottom pile body (1) and the length of the connecting steel bar (4) protruding from the end surface of the connecting pile body (2) are greater than the thickness of the base body (5).

Images