Prestressed solid square pile and pile driver

Abstract

The present invention relates to a prestressed square pile, and discloses a prestressed solid square pile, comprising a pile body and a steel cage embedded in the pile body, an end plate fixed on the end face of the pile body, a clearance opening opened on the end plate, inserted bars inserted on the pile body, a plurality of inserted bars distributed along the circumferential direction, the inserted bars comprising an upright portion and an obtuse portion, the upright portion and the oblique portion being integrally formed, and the two being arranged at an obtuse angle to each other, the oblique portion being located in the pile body and fixedly connected to the steel cage, and the upright portion passing through the clearance opening. The present application can realize the connection between the prestressed solid square pile and the cap without damaging the pile body, which improves the efficiency of on-site construction on the one hand, and on the other hand, does not generate dust at the construction site, and has an environmental protection effect.

Description

Technical Field

[0001] The invention relates to a prestressed square pile, in particular to a prestressed solid square pile and a pile driver. Background Art

[0002] In the related technology, the connection between the pile body and the pedestal is a rigid connection. During the construction process, the pile body is first driven into the soil layer, and then the concrete at the end of the pile body is destroyed to expose the steel bars at the end of the pile body. The exposed part is used to connect with the pedestal.

[0003] However, the above connection method requires the destruction of the pile body, which is labor-intensive and generates dust at the construction site, affecting the environment of the construction site. Summary of the invention

[0004] In order to achieve the connection between the prestressed solid square pile and the cap without damaging the pile body, the present application provides a prestressed solid square pile and a pile driver.

[0005] One of the purposes of this application is to provide a prestressed solid square pile, which adopts the following technical solution:

[0006] A prestressed solid square pile comprises a pile body and a steel cage embedded in the pile body, an end plate is fixed on the end face of the pile body, a plurality of clearance holes are opened on the end plate, dowel bars are inserted on the pile body, a plurality of dowel bars are distributed along the circumferential direction, the dowel bars comprise an upright portion and an obtuse portion, the upright portion and the oblique portion are integrally formed, and the two are arranged at an obtuse angle to each other, the oblique portion is located in the pile body and connected to the steel cage, and the upright portion passes through the clearance holes.

[0007] By adopting the above technical solution, since the upright part is exposed outside the end face of the pile body, when the pile body is connected to the cap, it is not necessary to destroy the original pile body, and a direct connection is sufficient. On the one hand, the efficiency of on-site construction is improved, and on the other hand, dust will not be generated at the construction site, which has an environmental protection effect. The above technical solution realizes the connection between the prestressed solid square pile and the cap without destroying the pile body by exposing the upright part outside the pile body.

[0008] Optionally, the end plate includes an outer end plate and an inner end plate, the outer end plate is provided with a rotating opening, and the inner end plate rotates in the rotating opening; the inner end plate includes a bearing plate and a pressing plate attached to the bearing plate, the bearing plate is provided with two sliding grooves, the two sliding grooves are centrally symmetrically arranged about the center of the bearing plate, sliding plates slide in the two sliding grooves respectively, the sliding plate is provided with a waist-shaped hole corresponding to the giveway hole, and the pressing plate is provided with a pressing groove corresponding to the sliding groove; the bearing plate is provided with an ejection assembly for driving the two sliding plates away from each other, and the inner side wall of the rotating opening is provided with a sliding groove for the ejected sliding plate to slide.

[0009] By adopting the above technical solution, when installing the end plate, the steel bars at the end of the steel cage pass through the anchor holes on the outer end plate, and then the staff rotates the end plate as a whole to achieve the connection between the steel cage and the end plate. Since the upright part of the inserted reinforcement corresponds to the clearance hole passed through the inner end plate, in order to prevent the upright part from being twisted during the rotation of the end plate, a rotational fit relationship is adopted between the inner end plate and the outer end plate. When rotating the outer end plate, the ejection assembly ejects the sliding plates on both sides out of the side wall of the inner end plate and into the slide groove. At this time, the inner end plate can rotate in the slide groove, and the slide groove can provide support for the sliding plate, so that the inner end plate can always be located in the rotation opening.

[0010] Optionally, a sliding groove is provided on the bearing plate, the sliding groove is centrally symmetrically arranged about the center of the bearing plate, and the two sliding grooves are symmetrically arranged about the line connecting the two sliding grooves;

[0011] The ejection assembly is provided with two groups, and the ejection assembly includes an ejection block, a force block and a first ejection compression spring. The force block slides in each sliding groove, and the end of the force block passes through the sliding groove. The opposite side walls of the two force blocks are fixedly connected with connecting rods, and the ejection block is fixedly connected with one end of each connecting rod. The width of the ejection block gradually increases along the direction close to the connecting rod, and the ejection block is located between the two sliding plates; the opposite side walls of the bearing plate and the pressure plate are respectively provided with guide grooves for the two ejection blocks to slide, and the two ejection blocks can approach or move away from each other in the guide grooves;

[0012] The first ejection compression spring is sleeved on the connecting rod, one end of which abuts against the force block, and the other end abuts against the bottom of the sliding groove; the pressure plate is provided with a matching groove that engages with the sliding groove, and the outer end plate is provided with an insertion groove that communicates with the sliding groove, the insertion groove is communicated with the rotating mouth, the groove depth of the insertion groove is greater than the groove depth of the sliding groove, and an arc transition is adopted between the insertion groove and the sliding groove.

[0013] By adopting the above technical solution, when installing the inner end plate, the part of the force-bearing block that passes through the sliding groove is located in the insertion groove. At this time, the first ejection compression spring is in a natural state, and the ejection block does not apply force to the sliding plate. Then, when the staff rotates the outer end plate, the inner end plate is restricted by the upright part and rotates, and the outer end plate and the inner end plate rotate relative to each other. At this time, the force-bearing block enters the sliding groove. Since the groove depth of the sliding groove is less than the groove depth of the insertion groove, the force-bearing block is pressed and moves into the sliding groove. The force-bearing block promotes the ejection block to move between the two sliding plates through the connecting rod. Since the width of the ejection block gradually increases in the direction close to the connecting rod, the sliding plate gradually extends out of the side wall of the inner end plate and enters the sliding groove, realizing the sliding fit between the inner end plate and the outer end plate.

[0014] Optionally, a sliding hole is formed on the end surface of the force block away from the connecting rod, a guide hole is formed at the bottom of the sliding hole, a locking rod slides in the guide hole, the locking rod extends out of the sliding hole, a limiting ring is fixedly sleeved on the locking rod and slides in the sliding hole, a second ejection compression spring is sleeved on the locking rod, and the second ejection compression spring is located between the interface between the sliding hole and the guide hole and the limiting ring; a locking hole for inserting the locking rod is formed on the inner side wall of the sliding groove.

[0015] By adopting the above technical solution, when the outer end plate rotates to the specified position, the locking rod is now opposite to the locking hole, and the locking rod enters the locking hole under the elastic force of the second ejection compression spring, thereby achieving locking between the inner end plate and the outer end plate.

[0016] Optionally, a plurality of stirrups are clamped outside the plurality of dowel bars, and a plurality of stirrups are arranged from top to bottom.

[0017] By adopting the above technical solution, the stirrups can hold a number of inserted bars tightly, thereby improving the stability between the several inserted bars.

[0018] Optionally, a protective sleeve is provided on the outer cover of the upright portion passing through the clearance hole.

[0019] By adopting the above technical solution, the protective sleeve can protect the upright part of the exposed pile body and can protect the inserted reinforcement during transportation, hoisting, pile sinking and excavation. When the pile body is connected to the base, the staff can take out the protective sleeve.

[0020] Optionally, the protective sleeve includes a first sleeve and a second sleeve, the cross-sections of the first sleeve and the second sleeve are semicircular, and the two are fixed by bolt connection.

[0021] By adopting the above technical solution, the protective sleeve is divided into a detachable first sleeve and a second sleeve, which makes it easy for workers to take out the protective sleeve.

[0022] Optionally, the open end of the protective sleeve is provided with a plurality of reduced diameter openings, and the open end of the protective sleeve is outer-coated with a clamp.

[0023] By adopting the above technical solution, after the protective sleeve is sleeved outside the upright part, the staff locks the clamp, and the tightening force of the clamp causes the open end of the protective sleeve to shrink, thereby achieving locking between the protective sleeve and the inserted reinforcement.

[0024] The second purpose of this application is to provide a pile driver, which adopts the following technical solution:

[0025] A pile driver for prestressed solid square piles comprises a driver body. The end surface of the driver that butts against the pile body is provided with accommodation holes for accommodating a plurality of upright parts.

[0026] By adopting the above technical solution, when delivering the pile, the accommodating hole can avoid the protective sleeve.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The upright part is exposed outside the pile body, which realizes the connection between the prestressed solid square pile and the cap without damaging the pile body.

[0029] 2. The protective sleeve can protect the upright part of the exposed pile body and can protect the inserted reinforcement during transportation, hoisting, pile sinking and excavation. When the pile body is connected to the pedestal, the staff can take out the protective sleeve.

[0030] 3. The protective sleeve is divided into a detachable first sleeve and a second sleeve, which is convenient for taking out the protective sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram used to embody the prestressed solid square piles in Example 1 of the present application.

[0032] Figure 2 It is a cross-sectional view used to illustrate the prestressed solid square pile in Example 1 of the present application.

[0033] Figure 3 It is a structural schematic diagram used to reflect the end plate in Example 1 of the present application.

[0034] Figure 4 It is a schematic diagram of the structure of the inner end plate used to reflect the embodiment 1 of the present application.

[0035] Figure 5 It is a structural schematic diagram used to reflect the supporting plate in Example 1 of the present application.

[0036] Figure 6 This is a schematic diagram of the structure of the pressure plate in Example 1 of the present application.

[0037] Figure 7 It is a cross-sectional view of the interior of the end plate used in Example 1 of the present application.

[0038] Figure 8 It is a cross-sectional view used to reflect the interior of the load-bearing block in Example 1 of the present application.

[0039] Fig. 9 It is a schematic diagram of the structure of the pile driver in Example 2 of the present application.

[0040] Description of reference numerals: 1, pile body; 2, steel cage; 3, end plate; 31, clearance hole; 32, dovetail groove; 33, guide groove; 4, inserted reinforcement; 41, upright portion; 42, bevel portion; 5, stirrup; 6, outer end plate; 61, rotation opening; 611, slide groove; 612, lock hole; 62, insertion groove; 7, inner end plate; 71, bearing plate; 711, sliding groove; 712, sliding groove; 72, pressing plate; 721, pressing groove; 722, matching groove; 8, sliding plate; 81, waist-shaped hole; 82, dovetail block; 9, ejector assembly; 91, ejector block; 92, force block; 921, sliding hole; 922, guide hole; 93, first ejector compression spring; 94, connecting rod; 95, locking rod; 951, limiting ring; 96, second ejector compression spring; 10, protective sleeve; 101, reducing port; 11, clamp; 12, pile driver; 121, receiving hole. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-9 This application is described in further detail.

[0042] Example 1

[0043] The present application embodiment provides a prestressed solid square pile, referring to Figure 1 and Figure 2 The prestressed solid square pile comprises a pile body 1 and a steel cage 2 embedded in the pile body 1. The pile body 1 is a solid structure with a square cross section. An end plate 3 is fixed on the end face of the pile body 1, and the end plate 3 is square.

[0044] Reference Figure 2 and Figure 3 A plurality of clearance holes 31 are provided at the center of the end plate 3, and the plurality of clearance holes 31 are arranged at equal intervals on the circumference. A dowel bar 4 is inserted on the pile body 1, and a plurality of dowel bars 4 are distributed along the circumference. The dowel bar 4 includes an upright portion 41 and an oblique angle portion 42, and the upright portion 41 and the oblique angle portion 42 are integrally formed, and the two are arranged at an obtuse angle to each other. The oblique angle portion 42 is located inside the pile body 1, and the end thereof away from the upright portion 41 approaches the outer wall of the pile body 1. The end of the oblique angle portion 42 away from the upright portion 41 is fastened to the steel cage 2 by a steel wire, and the upright portion 41 passes through the end face of the pile body 1 and the clearance opening in a vertical state.

[0045] Reference Figure 2 The beveled portion 42 has a greater pull-out resistance in the pile body 1, thereby improving the pull-out resistance of the inserted reinforcement 4. In addition, in order to improve the stability between the plurality of inserted reinforcements 4, a plurality of stirrups 5 are tightly clamped outside the plurality of inserted reinforcements 4, and a plurality of stirrups 5 are arranged from top to bottom, and the stirrups 5 are fixedly connected to the inserted reinforcement 4 by welding.

[0046] Reference Figure 3 and Figure 4The end plate 3 includes an outer end plate 6 and an inner end plate 7. The outer end plate 6 is square and the inner end plate 7 is circular. The clearance hole 31 is provided on the inner end plate 7. A rotation opening 61 is provided at the center of the outer end plate 6. The inner end plate 7 rotates in the rotation opening 61. The inner end plate 7 includes a circular bearing plate 71 and a circular pressing plate 72. The pressing plate 72 is attached to the bearing plate 71 and the two are fixed by welding.

[0047] Reference Figure 5 and Figure 6 Two sliding grooves 711 are formed on the bearing plate 71. The sliding grooves 711 are fan-shaped and are arranged symmetrically about the center of the bearing plate 71. Sliding plates 8 slide in the two sliding grooves 711 respectively. The sliding plates 8 have waist-shaped holes 81 corresponding to the clearance holes 31. A pressing groove 721 corresponding to the sliding grooves 711 is formed on the pressing plate 72.

[0048] Reference Figure 5 and Figure 6 After the pressing plate 72 and the bearing plate 71 are attached to each other, the sliding plate 8 slides in the groove body formed by the sliding groove 711 and the pressing groove 721. In addition, in order to limit the sliding direction of the sliding plate 8, dovetail grooves 32 are respectively opened at the bottom of the pressing groove 721 and the sliding groove 711, and a dovetail block 82 is formed on the sliding plate 8 to slide in the dovetail groove 32.

[0049] Reference Figure 5 and Figure 7 An ejection assembly 9 for driving the two sliding plates 8 to move away from each other is provided on the bearing plate 71, and a slide groove 611 for sliding the ejection sliding plate 8 is provided on the inner side wall of the rotating opening 61. Two groups of ejection assemblies 9 are provided, and the connecting line of the two groups of ejection assemblies 9 is located between the two sliding plates 8. The ejection assembly 9 includes an ejection block 91, a force block 92 and a first ejection compression spring 93.

[0050] Reference Figure 5 and Figure 6 A sliding groove 712 is provided on the bearing plate 71, and the sliding groove 712 is centrally symmetrically arranged about the center of the bearing plate 71, and the two sliding grooves 711 are symmetrically arranged about the connecting line between the two sliding grooves 712. A matching groove 722 is provided on the pressing plate 72 to engage with the sliding groove 712.

[0051] Reference Figure 5 and Figure 6The force-bearing block 92 slides one in each sliding groove 711. After the pressure plate 72 and the bearing plate 71 are attached to each other, the sliding groove 712 and the matching groove 722 form a complete groove body for the force-bearing block 92 to slide. The end of the force-bearing block 92 is arranged to pass through the sliding groove 712. The two force-bearing blocks 92 are respectively fixedly connected to the opposite side walls with connecting rods 94. The ejector rod is fixedly connected to the end of each connecting rod 94. The width of the ejector block 91 gradually increases along the direction close to the connecting rod 94. The ejector block 91 is located between the two sliding plates 8, and its side wall is always in contact with the sliding plate 8.

[0052] Reference Figure 5 and Figure 6 The guide grooves 33 for the two ejection blocks 91 to slide are respectively provided on the opposite side walls of the bearing plate 71 and the pressure plate 72. The guide grooves 33 are connected to the interactive grooves, and the depth of the guide grooves 33 is less than the depth of the sliding grooves 712. The first ejection compression spring 93 is sleeved on the connecting rod 94, one end of which abuts against the force block 92, and the other end abuts against the interface between the sliding groove 712 and the guide groove 33.

[0053] Reference Figure 7 An insertion groove 62 communicating with the slide groove 611 is opened on the outer end plate 6. The insertion groove 62 is communicated with the rotation opening 61. The groove depth of the insertion groove 62 is greater than the groove depth of the slide groove 611. An arc transition is adopted between the insertion groove 62 and the slide groove 611.

[0054] When the inner end plate 7 is installed, the part of the force block 92 that passes through the sliding groove 711 is located in the insertion groove 62. At this time, the first ejection compression spring 93 is in a natural state, and the ejection block 91 does not apply force to the sliding plate 8. Next, when the staff rotates the outer end plate 6, the inner end plate 7 is restricted by the upright portion 41 and does not rotate, and the outer end plate 6 and the inner end plate 7 rotate relative to each other. At this time, the force block 92 enters the sliding groove 611 after passing through the arc transition section. Since the groove depth of the sliding groove 611 is less than the groove depth of the insertion groove 62, the force block 92 is pressed and moves into the sliding groove 712. The force block 92 forces the ejection block 91 to move between the two sliding plates 8 through the connecting rod 94. Since the width of the ejection block 91 gradually increases in the direction close to the connecting rod 94, the sliding plate 8 gradually extends out of the side wall of the inner end plate 7 and enters the sliding groove 611, realizing the sliding fit between the inner end plate 7 and the outer end plate 6.

[0055] Reference Figure 5 and Figure 8A sliding hole 921 is formed on the end surface of the force bearing block 92 away from the connecting rod 94, a guide hole 922 is formed in the space of the sliding hole 921, a locking rod 95 slides in the guide hole 922, and the locking rod 95 extends out of the sliding hole 921. A limiting ring 951 is sleeved on the locking rod 95 and slides in the sliding hole 921. The limiting ring 951 is fixedly connected to the locking rod 95. A second ejection spring 96 is sleeved on the locking rod 95, and the second ejection spring 96 is located between the interface between the sliding hole 921 and the guide hole 922 and the limiting ring 951. A locking hole 612 is formed on the inner wall of the slide groove 611 for the locking rod 95 to be inserted.

[0056] When the outer end plate 6 rotates to the specified position, the locking rod 95 is now opposite to the locking hole 612. The locking rod 95 enters the locking hole 612 under the elastic force of the second ejection compression spring 96, thereby achieving locking between the inner end plate 7 and the outer end plate 6.

[0057] Reference Figure 1 A protective sleeve 10 is provided on the outer cover of the upright portion 41 passing through the concession opening. The protective sleeve 10 can protect the upright portion 41 exposed from the pile body 1 and can protect the inserted reinforcement 4 during transportation, hoisting, pile sinking and earth excavation. When the pile body 1 is connected to the foundation, the staff can take out the protective sleeve 10.

[0058] Reference Figure 1 In addition, in order to facilitate the tightening of the protective sleeve outside the upright portion 41, the open end of the protective sleeve 10 is provided with a plurality of reduced diameter openings 101, and the open end of the protective sleeve 10 is provided with a clamp 11 outside.

[0059] The specific implementation principle of the embodiment of the present application is:

[0060] When making prestressed solid piles, the steel cage 2 is made first, and then the inserted bars 4 are installed. During installation, the staff puts the angled parts 42 of several inserted bars 4 into the steel cage 2 in sequence, and connects them to the steel cage 2 through steel wires, and uses the stirrups 5 to tighten the several inserted bars 4. Next, the staff makes the upright parts 41 of each inserted bar 4 pass through the clearance holes 31 of the end plate 3. After all the upright parts 41 pass through the end plate 3, the staff rotates the outer end plate 6 to complete the connection between the steel cage 2 and the outer end plate 6. At the same time, the inner end plate 7 and the outer end plate 6 rotate relative to each other, the sliding plate 8 in the inner end plate 7 extends into the slide groove 611, and the locking rod 95 is inserted into the locking hole 612, so as to achieve the locking between the inner end plate 7 and the outer end plate 6, thereby completing the connection between the entire end plate 3 and the steel cage 2.

[0061] After the connection between the end plate 3 and the steel cage 2 is completed, the staff casts concrete on the above-formed steel structure to form a square pile. At this time, the staff sets the protective sleeve 10 outside the upright part 41 to protect the upright part 41. Finally, the square pile is transported to the construction site. When it needs to be connected to the foundation, the staff removes the protective sleeve 10, and the exposed upright part 41 is used to connect with the foundation.

[0062] Since the upright portion 41 is exposed outside the end face of the pile body 1, when connecting with the foundation, there is no need to destroy the original pile body 1, and a direct connection is sufficient. On the one hand, the efficiency of on-site construction is improved, and on the other hand, no dust is generated at the construction site, which has an environmental protection effect.

[0063] Example 2

[0064] The present application embodiment provides a pile driver 12 for the prestressed solid square pile in embodiment 1, referring to Fig. 9 The end surface of the delivery device that interfaces with the pile body 1 is provided with a receiving hole 121 for receiving a plurality of upright portions 41 .

Claims

1. A prestressed solid square pile, comprising a pile body (1) and a steel cage (2) embedded in the pile body (1), characterized in that: An end plate (3) is fixed on the end surface of the pile body (1), and a plurality of clearance holes (31) are opened on the end plate (3). A dowel bar (4) is inserted on the pile body (1), and a plurality of dowel bars (4) are distributed along the circumferential direction. The dowel bar (4) comprises an upright portion (41) and an oblique angle portion (42). The upright portion (41) and the oblique angle portion (42) are integrally formed and are arranged at an obtuse angle to each other. The oblique angle portion (42) is located in the pile body (1) and is connected to the steel cage (2). The upright portion (41) passes through the clearance hole (31). The end plate (3) comprises an outer end plate (6) and an inner end plate (7); the outer end plate (6) is provided with a rotation opening (61), the inner end plate (7) rotates in the rotation opening (61), and the clearance hole (31) is provided on the inner end plate (7); the inner end plate (7) comprises a bearing plate (71) and a pressing plate (72) attached to the bearing plate (71); the bearing plate (71) is provided with two sliding grooves (711), and the two sliding grooves (711) are convex and concave with respect to the center of the bearing plate (71). The two slide grooves (611) are symmetrically arranged, and a sliding plate (8) slides in each of the two slide grooves (611). The sliding plate (8) is provided with a waist-shaped hole (81) corresponding to the clearance hole (31), and the pressing plate (72) is provided with a pressing groove (721) corresponding to the sliding groove (711); the carrying plate (71) is provided with an ejection component (9) for driving the two sliding plates (8) to move away from each other, and the inner side wall of the rotating mouth (61) is provided with a sliding groove (611) for the ejected sliding plate (8) to slide; The bearing plate (71) is provided with a sliding groove (712), the sliding groove (712) is centrally symmetrically arranged with respect to the center of the bearing plate (71), and the two sliding grooves (711) are symmetrically arranged with respect to the line connecting the two sliding grooves (712); The ejection assembly (9) is provided with two groups, and the ejection assembly (9) comprises an ejection block (91), a force block (92) and a first ejection compression spring (93). One of the force blocks (92) slides in each sliding groove (711), and the end of the force block (92) is arranged to pass through the sliding groove (712). The opposite side walls of the two force blocks (92) are respectively fixedly connected with connecting rods (94). One of the ejection blocks (91) is respectively fixedly connected to the end of each connecting rod (94). The width of the ejection block (91) gradually increases in the direction approaching the connecting rod (94). The ejection block (91) is located between the two sliding plates (8); guide grooves (33) for the two ejection blocks (91) to slide are respectively opened on the opposite side walls of the bearing plate (71) and the pressure plate (72), and the two ejection blocks (91) can approach or move away from each other in the guide grooves (33); The first ejection compression spring (93) is sleeved on the connecting rod (94), one end of which abuts against the force block (92), and the other end abuts against the bottom of the sliding groove (712); the pressure plate (72) is provided with a matching groove (722) that is engaged with the sliding groove (712); the outer end plate (6) is provided with an insertion groove (62) that communicates with the sliding groove (611); the insertion groove (62) is communicated with the rotating mouth (61); the groove depth of the insertion groove (62) is greater than the groove depth of the sliding groove (611); and a circular arc transition is adopted between the insertion groove (62) and the sliding groove (611); A sliding hole (921) is formed on the end surface of the force-bearing block (92) away from the connecting rod (94), a guide hole (922) is formed at the bottom of the sliding hole (921), a locking rod (95) slides in the guide hole (922), the locking rod (95) extends out of the sliding hole (921), a limiting ring (951) is fixedly sleeved on the locking rod (95) and slides in the sliding hole (921), a second ejection compression spring (96) is sleeved on the locking rod (95), and the second ejection compression spring (96) is located between the interface between the sliding hole (921) and the guide hole (922) and the limiting ring (951); a locking hole (612) for inserting the locking rod (95) is formed on the inner wall of the sliding groove (611).

2. The prestressed solid square pile according to claim 1, characterized in that: A plurality of stirrups (5) are clamped outside the plurality of dowel bars (4), and a plurality of stirrups (5) are arranged from top to bottom.

3. The prestressed solid square pile according to claim 1, characterized in that: The upright portion (41) passing through the clearance hole (31) is provided with a protective sleeve (10) on its outer shell.

4. The prestressed solid square pile according to claim 3, characterized in that: The open end of the protective sleeve (10) is provided with a plurality of reduced diameter openings (101), and the open end of the protective sleeve (10) is covered with a clamp (11).

5. A pile driver for the prestressed solid square pile according to any one of claims 1 to 4, comprising a driver body, characterized in that: An accommodating hole (121) for accommodating a plurality of upright parts (41) is provided on the end surface of the delivery device that is connected to the pile body (1).

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