CN214401756U

CN214401756U - Prestressed concrete tubular pile tip

Info

Publication number: CN214401756U
Application number: CN202120192041.0U
Authority: CN
Inventors: 周洪彪; 牛智诚
Original assignee: Hebei Quantong Building Materials Co ltd
Current assignee: Hebei Quantong Building Materials Co ltd
Priority date: 2021-01-23
Filing date: 2021-01-23
Publication date: 2021-10-15
Anticipated expiration: 2031-01-23

Abstract

The application relates to a prestressed concrete tubular pile tip, which comprises a pile body mechanism, an end mechanism and a connecting mechanism, wherein the pile body mechanism comprises a pile body and a tubular pile; the end surface of the tubular pile is provided with an inserting hole which is matched with the inserting column; a flange device is arranged on the outer peripheral surface of the insertion matching part of the pile body and the tubular pile; the end mechanism comprises an end body, the connecting mechanism comprises an end connecting assembly, the end connecting assembly comprises a clamping block and a clamping groove, a connecting rod is arranged on the end face of the clamping block, and one end of the connecting rod is fixedly connected with the end face of the end body; the clamping groove is formed in the end face, close to the end head body, of the pile body, and one side of the clamping groove is provided with a abdicating groove; a screwed piece is arranged at the rotary connection position of the end head body and the pile body; the present application has the effect of making the connection of the stake points tighter.

Description

Prestressed concrete tubular pile tip

Technical Field

The application relates to the field of building construction pile foundations, in particular to a prestressed concrete pipe pile tip.

Background

The precast piles widely used in the construction process at present are mainly divided into two types of concrete and steel piles, and are hammered by a pile hammer to be deposited on a specified bearing layer when in use.

The prior Chinese invention with the publication number of CN202010234472.9 discloses a precast pile tip structure, which comprises a tubular pipe pile, a conical pile tip arranged at the bottom of the pipe pile, and a buffer cavity arranged at the bottom end in the pipe pile and fixed at the top end of the pile tip; the buffer cavity comprises an end plate fixed inside the tubular pile, a buffer network fixed below the end plate and positioned inside the tubular pile, and a back cover connected below the buffer network and positioned at the bottom end inside the tubular pile; the pile tip comprises a supporting body which is fixed below the bottom of the sealing cover, is in a round table shape and is consistent with the shape and the size of the bottom of the sealing cover, and a cone-shaped wedge which is fixed at the bottom end of the supporting body; also includes several roller sets disposed on the support. The buffer network comprises a plurality of first buffer rods which are obliquely arranged between the end plate and the back cover right, welded at the top on the end plate and welded at the bottom on the back cover and form a 60-degree included angle with the end plate, and a plurality of second buffer rods which are obliquely arranged between the end plate and the back cover left, welded at the top on the end plate and welded at the bottom on the back cover, form a 60-degree included angle with the end plate and have the same shape and size as the first buffer rods.

In view of the above-mentioned related technologies, the inventor believes that the overall size of the pile tip structure of the precast pile is large, which not only has great difficulty in prefabrication, but also is inconvenient to store and transport and needs to be improved.

SUMMERY OF THE UTILITY MODEL

In order to make the prefabrication of stake point and pile body mechanism reduce the degree of difficulty to make depositing and transporting of stake point and pile body mechanism comparatively convenient, this application provides a prestressed concrete tubular pile stake point.

The technical scheme provided by the application is as follows:

a prestressed concrete tubular pile tip comprises a pile body mechanism, an end mechanism and a connecting mechanism, wherein the pile body mechanism comprises a pile body and a tubular pile, a pile body connecting assembly is arranged at the joint of the end surfaces of the pile body and the tubular pile, the pile body connecting assembly comprises a plurality of inserting columns, and the inserting columns are uniformly and circumferentially distributed on the end surface of the pile body along the axis of the pile body; the end surface of the tubular pile is provided with an inserting hole which is matched with the inserting column; a flange device is arranged on the outer peripheral surface of the insertion matching part of the pile body and the tubular pile; the end mechanism comprises an end body, the connecting mechanism comprises an end connecting assembly, the end connecting assembly comprises a clamping block and a clamping groove, a connecting rod is arranged on the end face of the clamping block, and one end of the connecting rod is fixedly connected with the end face of the end body; the clamping groove is formed in the end face, close to the end head body, of the pile body, one side of the clamping groove is provided with a abdicating groove, and the size of the abdicating groove is the same as that of the connecting rod; the rotating connection part of the end head body and the pile body is provided with a screw connector.

By adopting the technical scheme, the splicing columns and the splicing holes are matched with each other to enable the pile body and the tubular pile to be connected with each other, the operation process is simple, and in order to prevent the pile body and the tubular pile from slipping, the flange device can effectively fix the relative positions of the spliced pile body and the tubular pile, so that the pile body and the tubular pile have integrity after being connected; the clamping block can be matched with the clamping groove, and meanwhile, the end head body is rotated to enable the connecting rod on the end face of the clamping block to be clamped with the abdicating hole, so that the clamping block cannot slip from the abdicating groove, and the end head body and the pile body are tightly clamped; thereby the swivel connector can prevent effectively that the end body from taking place relative rotation and causing the end body to break away from pile body end, rotates the in-process, the swivel connector one-to-one of end body and pile body to mutually support through bolt and nut and make end body and pile body zonulae occludens. The connecting structure is arranged, so that the pile body and the tubular pile, the end body and the pile body are prefabricated in a split mode, the prefabrication difficulty is reduced, meanwhile, the pile body, the end body and the tubular pile are detachably connected, and the whole pile tip of the prestressed concrete tubular pile is stored and transported more conveniently.

Optionally, the pile body comprises a top plate and a bottom plate, the top plate is annular, and the top plate is fixedly connected to the end portion, facing the tubular pile, of the pile body; the bottom plate is circular ring type, and keeps unanimous with the roof size, and the bottom plate rigid coupling deviates from the tip of tubular pile in pile body.

By adopting the technical scheme, the top plate can effectively buffer the impact force of the tubular pile on the pile body so as to protect the internal structure of the pile body, the top plate is constructed by adopting a standard metal type material, and the standard metal type material has considerable dead weight stability and impact resistance stability, so that the top plate has the functions of strong bearing capacity, impact resistance, smashing resistance and difficult deformation; the bottom plate can be constructed by adopting standard metal type materials, so that the structural strength of the pile body is enhanced.

Optionally, the top plate and the bottom plate are fixedly connected between the pile body, the connecting pieces are of a triangular steel frame structure, the connecting pieces are arranged on the inner circumferential surface of the pile body along the circumferential direction, two ends of each connecting piece are fixedly connected to the opposite end surfaces of the top plate and the bottom plate respectively, and the triangular upper end surface and the triangular lower end surface of each connecting piece are abutted to the inside of the structure of the pile body respectively.

Through adopting above-mentioned technical scheme, the connecting piece is used for increasing the structural strength of pile body to reduce the possibility of pile body deformation when receiving outside mechanical force impact, and the connecting piece makes roof and bottom plate have the wholeness in the pile body.

Optionally, a plurality of main ribs are arranged in the triangular structural gaps of the connecting piece, the main ribs are arranged along the length direction of the pile body, and two ends of each main rib are fixedly connected to the end faces of the top plate and the bottom plate respectively; the outer side surface of a plurality of main reinforcements surrounds the rigid coupling and has the stirrup, and the stirrup is the annular, and the diameter of stirrup is greater than the diameter of the circumference that the main reinforcement formed, and the stirrup welding is on the main reinforcement.

By adopting the technical scheme, the main ribs can play a certain supporting role on the upper end face and the lower end face of the pile body, so that the pile body has better impact resistance and structural strength when being subjected to the action of external mechanical force; the stirrups enable the pile body to have better shearing resistance and torsion resistance, and meanwhile, the stirrups can effectively enhance the transverse tensile resistance of the main reinforcements, so that the main reinforcements are stably and fixedly connected inside the pile body in the horizontal direction, and the possibility that the main reinforcements are bent inside the pile body due to external mechanical force is reduced; the stirrups and the connecting pieces do not interfere in the pile body, so that the main reinforcements, the stirrups and the connecting pieces jointly increase the structural strength of the pile body; the pile body is formed after the waterproof concrete is cast on the connecting piece, the main reinforcement and the stirrups, so that the internal structure of the pile body is relatively stable, the waterproof concrete has two functions of waterproof and bearing, and the waterproof concrete has simple and convenient construction steps and reliable waterproof quality under the condition of complex structural modeling, thereby enhancing the compressive resistance and impermeability of the pile body.

Optionally, a transverse tie bar is arranged between the inner walls of the end body, the transverse tie bar is cylindrical, and the two end faces are fixedly connected to the surface of the inner wall of the end body respectively.

Through adopting above-mentioned technical scheme, horizontal lacing wire makes the end body have certain horizontal compressive resistance, and horizontal lacing wire can play the supporting role to the inner peripheral surface of end body to improve the structural strength of end body.

Optionally, the end face of the end body, which is away from the pile body, is fixedly connected with an end tip, the end tip is in a circular truncated cone shape, the size of the lower end face of the end tip is the same as that of the upper surface of the end body, and the end tip can be constructed by using a steel material.

Through adopting above-mentioned technical scheme, the difficult fracture of end point at the in-process of pile to steel material to make the pile point keep stable in vertical direction.

Optionally, the outer peripheral surface of the end body is fixedly connected with a rectangular steel block, and the steel block is laid along the length direction of the end body.

Through adopting above-mentioned technical scheme, at the in-process that the pile body was squeezed into, the steel block is at vertical orientation cutting soil to it is loose to make pile body surrounding soil layer, makes the pile body get into in the soil more easily.

Optionally, a steel frame is fixedly connected between the outer wall and the inner wall of the end body, the steel frame is triangular, and the upper end face and the lower end face of the steel frame are tightly abutted to the outer wall and the inner wall of the end body.

Through adopting above-mentioned technical scheme, the structural strength of end body can effectively be strengthened to the steelframe for the end can not take place to warp at the pile in-process.

To sum up, the application comprises the following beneficial technical effects:

1. the end body can be tightly clamped with the pile body, the installation mode is simple, the end is convenient to replace, the prefabrication difficulty is reduced, and the storage and the transportation are convenient;

2. the pile body can be tightly connected with the tubular pile, so that the structure of the pile body is kept stable in the piling process, and the integrity of the pile tip is improved;

3. the transverse lacing wire can effectively increase the transverse compressive resistance of the end body, thereby playing a supporting role on the inner peripheral surface of the end body and improving the structural strength of the end body.

Drawings

Fig. 1 is a structural sectional view of an embodiment of the present application.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1, which is mainly used for showing the internal structure of the pile body.

Fig. 3 is a schematic diagram of an exploded structure of a pile body connecting assembly.

Fig. 4 is an enlarged view of B in fig. 1 to show the structure of the flange device.

Fig. 5 is a schematic diagram of an exploded configuration of a tip connection assembly.

Fig. 6 is an enlarged schematic view of a portion C in fig. 5 for showing the structure of the clamping block.

In the figure, 1, a pile body mechanism, 11, a pile body, 111, a top plate, 112, a bottom plate, 113, a connecting piece, 114, a main rib, 115, a stirrup, 12, a tubular pile, 13, a pile body connecting assembly, 131, an inserting column, 132, an inserting hole, 14, a flange device, 141, a flange plate, 142, a flange bolt, 143, a flange nut, 2, an end head mechanism, 21, an end head body, 22, a transverse tie bar, 23, an end tip, 24, a steel block, 25, a steel frame, 3, a connecting mechanism, 31, an end head connecting assembly, 311, a clamping block, 312, a clamping groove, 313, a connecting rod, 314, an abdicating groove, 32 and a screwed piece.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the application discloses prestressed concrete tubular pile stake point.

Referring to fig. 1, a prestressed concrete tubular pile tip comprises a pile body mechanism 1, an end head mechanism 2 and a connecting mechanism 3.

Referring to fig. 1 and 2, the pile mechanism 1 includes a pile body 11 and a tubular pile 12, the pile body 11 is hollow cylindrical, the pile body 11 includes a top plate 111 and a bottom plate 112, the top plate 111 is circular ring-shaped, and the top plate 111 is fixedly connected to the end of the pile body 11 facing the tubular pile 12, the top plate 111 can effectively buffer the impact force of the tubular pile 12 on the pile body 11, so as to protect the internal structure of the pile body 11, the top plate 111 is constructed by standard metal type materials, the standard metal type materials have equivalent dead weight stability and impact resistance stability, so that the top plate 111 has the functions of strong bearing, impact resistance, smash resistance and difficult deformation; the bottom plate 112 is circular and has the same size with the top plate 111, the bottom plate 112 is fixedly connected to the end of the pile body 11 away from the tubular pile 12, and the bottom plate 112 can be made of the same material as the top plate 111, so that the structural strength of the pile body 11 is enhanced; the top plate 111 and the bottom plate 112 are fixedly connected with a connecting piece 113 between the pile body 11, the connecting piece 113 is a triangular steel frame structure, the connecting piece 113 is arranged on the inner circumferential surface of the pile body 11 along the circumferential direction, two ends of the connecting piece 113 are respectively fixedly connected to the opposite end surfaces of the top plate 111 and the bottom plate 112, the triangular upper end surface and the triangular lower end surface of the connecting piece 113 are respectively abutted to the inside of the structure of the pile body 11, the connecting piece 113 is used for increasing the structural strength of the pile body 11, so that the possibility of deformation of the pile body 11 when being impacted by external mechanical force is reduced, and the connecting piece 113 enables the top plate 111 and the bottom plate 112 to have integrity in the pile body 11; a plurality of main ribs 114 are arranged in the triangular structural gaps of the connecting piece 113, the main ribs 114 are cylindrical, the main ribs 114 are arranged along the length direction of the pile body 11, and two ends of the main ribs 114 are respectively and fixedly connected to the end surfaces of the top plate 111 and the bottom plate 112, so that the main ribs 114 can play a certain supporting role on the upper end surface and the lower end surface of the pile body 11, and the pile body 11 has better impact resistance and structural strength when being subjected to external mechanical force; hoops 115 are fixedly connected to the outer side surfaces of the main reinforcements 114 in a surrounding mode, the hoops 115 are annular, the diameter of the hoops 115 is larger than that of the circumference formed by the main reinforcements 114, the hoops 115 are welded to the main reinforcements 114, the pile body 11 has better shearing resistance and torsion resistance due to the hoops 115, meanwhile, the hoop 115 can effectively strengthen the transverse tensile resistance of the main reinforcements 114, the main reinforcements 114 are fixedly connected to the inside of the pile body 11 in a stable mode in the horizontal direction, and therefore the possibility that the main reinforcements 114 are bent inside the pile body 11 due to external mechanical force is reduced; the stirrups 115 and the connecting pieces 113 do not interfere in the pile body 11, so that the main reinforcements 14, the stirrups 115 and the connecting pieces 113 jointly increase the structural strength of the pile body; the pile body 11 is formed after the waterproof concrete is cast on the connecting piece 113, the main reinforcement 114 and the stirrup 115, so that the internal structure of the pile body 11 is relatively stable, the waterproof concrete has two functions of waterproof and bearing, and the waterproof concrete has simple and convenient construction steps and reliable waterproof quality under the condition of complex structural modeling, thereby enhancing the compressive resistance and impermeability of the pile body 11.

Referring to fig. 3 and 4, the tubular pile 12 is hollow and cylindrical, and the end face of the tubular pile 12 is the same size as the end face of the pile body 11, so that the tubular pile 12 can be tightly connected with the pile body 11; a pile body connecting assembly 13 is arranged at the joint of the end faces of the pile body 11 and the tubular pile 12, the pile body connecting assembly 13 comprises splicing columns 131, the splicing columns 131 are cylindrical, one ends of the splicing columns 131 are fixedly connected to the end face, close to the tubular pile 12, of the pile body 11, eight splicing columns 131 are arranged, and the splicing columns 131 are uniformly and circumferentially distributed on the end face of the pile body 11 along the axis of the pile body 11; the end face of the tubular pile 12 is provided with a plug hole 132, the plug hole 132 is cylindrical, and the size of the plug hole 132 is matched with the plug column 131; eight plug holes 132 are provided and can be matched with the plug columns 131 one by one in the plug process; in order to prevent the pile body from being broken due to loose insertion, the peripheral surface of the insertion matching part of the pile body 11 and the tubular pile 12 is provided with two flange devices 14, each flange device 14 comprises a flange 141, the two flanges 141 are fixedly connected to the peripheral surfaces of the pile body 11 and the tubular pile 12 respectively, each flange 141 is in a ring shape, and the peripheral surfaces of the pile body 11 and the tubular pile 12 are provided with limiting grooves (not shown in the figure), so that the flanges 141 can be partially embedded in the peripheral surfaces of the pile body 11 and the tubular pile 12, and the integral cylindrical structure of the pile tip is not influenced; be provided with flange bolt 142 on the ring flange 141 of pile body 11 global, flange bolt 142 sets up a plurality of, the ring flange 141 back of tubular pile 12 is provided with flange nut 143, the quantity of flange nut 143 is the same with flange bolt 142, flange bolt 142 can with the ring flange 141 global on the connecting hole looks adaptation of seting up, flange bolt 142 wears to locate in the connecting hole of two ring flanges, and mutually support through flange nut 143 and make flange device 14 fixed, thereby make pile body 11 and tubular pile 12 zonulae occludens, strengthen the wholeness of device.

Referring to fig. 1, the end mechanism 2 includes an end body 21, the end body 21 is in a truncated cone shape, the bottom surface of the end body 21 is the same as the end surface of the pile body 11 away from the tubular pile 12 in size, the end body 21 is in a hollow structure, and the inner wall and the outer wall of the end body 21 are parallel to each other; the outer peripheral surface and the inner peripheral surface of the lower end surface of the end head body 21 are respectively the same as the outer peripheral surface and the inner peripheral surface of the section of the pile body 11 in size, so that the end head body 21 can be tightly connected with the pile body 11; a transverse lacing wire 22 is arranged between the inner walls of the end body 21, the transverse lacing wire 22 is cylindrical, two end faces of the transverse lacing wire 22 are fixedly connected to the surface of the inner wall of the end body 21 respectively, the transverse lacing wire 22 enables the end body 21 to have certain transverse compressive resistance, and the transverse lacing wire 22 can support the inner peripheral surface of the end body 21, so that the structural strength of the end body 21 is improved; an end tip 23 is fixedly connected to the end face of the end head body 21, which is far away from the pile body 11, the lower end face of the end tip 23 has the same size as the upper surface of the end head body 21, the end tip 23 is in a circular truncated cone shape, and the end tip 23 can be made of a steel material, so that the end tip 23 is not easy to break in the piling process, and the pile tip is kept stable in the vertical direction; a plurality of steel blocks 24 are fixedly connected to the outer peripheral surface of the end head body 21, the steel blocks 24 are rectangular, the steel blocks 24 are laid along the length direction of the end head body 21, and in the driving process of the pile body 11, the steel blocks 24 cut soil in the vertical direction, so that soil layers around the pile body 11 are loosened, and the pile body 11 can enter the soil more easily; the steel frame 25 is fixedly connected between the outer wall and the inner wall of the end head body 21, the steel frame 25 is triangular, and the upper end angle and the lower end angle of the steel frame 25 are tightly abutted to the outer wall and the inner wall of the end head body, so that the structural strength of the end head body 21 is enhanced, and the end head 21 cannot deform in the piling process.

Referring to fig. 5 and 6, the connecting mechanism 3 includes an end connecting assembly 31 and a pile body connecting assembly 32, the end connecting assembly 31 includes a clamping block 311 and a clamping groove 312, the clamping block 311 is rectangular, a cylindrical connecting rod 313 is arranged on an end face of the clamping block 311, one end of the connecting rod 313 is fixedly connected with an end face of the end body 21, eight clamping blocks 311 are arranged, and the eight clamping blocks are arranged in an array along a central axis of the end body 21; the clamping groove 312 is formed in the end face, close to the end head body 21, of the pile body 11, the opening of the clamping groove 312 is rectangular, the size of the rectangular opening of the clamping groove 312 is the same as that of the rectangular portion of the clamping block 311, a yielding groove 314 into which the clamping block 311 can slide is formed in one side of the clamping groove 312, and the size of the yielding groove 314 is the same as that of the clamping block 311; the upper side of the abdicating groove 314 is communicated with an abdicating hole (not shown in the figure) which can accommodate the connecting rod to slide, and the abdicating hole is arranged on the side wall of the end part of the pile body 11; in the connection process, the clamping block 311 can be matched with the clamping groove 312, and meanwhile, the end body 21 is rotated to enable the connecting rod 313 on the end face of the clamping block 311 to be clamped with the abdicating hole, so that the clamping block 311 cannot slip from the abdicating groove 314, and the end body 21 and the pile body 11 are tightly clamped; in order to prevent the relative rotation of end body 21 and thus cause end body 21 to break away from pile body 11 tip, the rotation junction of end body 21 and pile body 11 is provided with swivel connector 32, swivel connector 32 is the rectangle, and swivel connector 32 central point puts and is provided with the through-hole, swivel connector 32 is provided with eight, and evenly set up on end body 21 and pile body 11 are close to the outer peripheral face of terminal surface, in the rotation process, end body 21 and pile body 11's swivel connector 32 one-to-one, and mutually support through bolt and nut and make end body 21 and pile body 11 zonulae occludens.

The implementation principle of a prestressed concrete pipe pile tip in the embodiment of the application is as follows: the connecting piece 113, the main reinforcement 114 and the stirrup 115 arranged inside the pile body 11 can effectively improve the structural strength of the pile body 11, and are formed after waterproof concrete is cast on the connecting piece 113, the main reinforcement 114 and the stirrup 115; the pile body 11 and the tubular pile 12 are mutually matched and spliced through the splicing columns 131 and the splicing holes 132, and meanwhile, the pile body 11 and the flange device 14 outside the tubular pile 12 are mutually matched and connected, so that the matching degree of the pile body 11 and the tubular pile 12 is improved; the transverse lacing wire 22 arranged on the inner wall of the end head body 21 can effectively improve the transverse tensile resistance of the end head body 21, and the steel frame 25 can enhance the structural strength of the end head body 21, so that the end head body 21 can keep certain hardness in the piling process and can cope with a harder soil structure; pile body 11 and end body 21 can be rotationally clamped by clamping block 311 and clamping groove 312 and fixedly connected by external screw connector 32, so that the tightness of connection between pile body 11 and end body 21 is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a prestressed concrete tubular pile stake point, includes pile body mechanism (1), end mechanism (2) and coupling mechanism (3), its characterized in that: the pile body mechanism (1) comprises a pile body (11) and a tubular pile (12), a pile body connecting assembly (13) is arranged at the joint of the end faces of the pile body (11) and the tubular pile (12), the pile body connecting assembly (13) comprises a plurality of inserting columns (131), and the inserting columns (131) are uniformly and circumferentially distributed on the end face of the pile body (11) along the axis of the pile body (11); the end surface of the tubular pile (12) is provided with an inserting hole (132), and the inserting hole (132) is matched with the inserting column (131); a flange device (14) is arranged on the outer peripheral surface of the splicing matching part of the pile body (11) and the tubular pile (12); the end mechanism (2) comprises an end body (21), the connecting mechanism (3) comprises an end connecting assembly (31), the end connecting assembly (31) comprises a clamping block (311) and a clamping groove (312), a cylindrical connecting rod (313) is arranged on the end face of the clamping block (311), and one end of the connecting rod (313) is fixedly connected with the end face of the end body (21); the clamping groove (312) is formed in the end face, close to the end head body (21), of the pile body (11), one side of the clamping groove (312) is provided with a yielding groove (314), and the size of the yielding groove (314) is the same as that of the connecting rod (313); and a screwed piece (32) is arranged at the rotary connection part of the end head body (21) and the pile body (11).

2. The pile tip of a prestressed concrete pipe pile according to claim 1, characterized in that: the pile body (11) comprises a top plate (111) and a bottom plate (112), the top plate (111) is of a circular ring shape, and the top plate (111) is fixedly connected to the end part, facing the tubular pile (12), of the pile body (11); bottom plate (112) are the ring type, and with roof (111) size keeps unanimous, bottom plate (112) rigid coupling in pile body (11) deviates from the tip of tubular pile (12).

3. The pile tip of a prestressed concrete pipe pile according to claim 2, characterized in that: roof (111) with bottom plate (112) are in the rigid coupling has connecting piece (113) between pile body (11), connecting piece (113) are triangle-shaped steel frame construction, connecting piece (113) are in pile body (11) inner peripheral surface sets up along circumference, the both ends of connecting piece (113) respectively the rigid coupling in roof (111) with the relative terminal surface of bottom plate (112), just connecting piece (113) triangle-shaped upper and lower terminal surface respectively the butt in inside the structure of pile body (11).

4. The pile tip of a prestressed concrete pipe pile according to claim 3, characterized in that: a plurality of main ribs (114) are arranged in gaps of the triangular structure of the connecting piece (113), the main ribs (114) are arranged along the length direction of the pile body (11), and two ends of each main rib (114) are fixedly connected to the end faces of the top plate (111) and the bottom plate (112) respectively; the lateral surface of main muscle (114) encircles rigid coupling and has stirrup (115), stirrup (115) are the annular, just the diameter of stirrup (115) is greater than the diameter of the circumference that main muscle (114) formed, stirrup (115) welding is in on main muscle (114).

5. The pile tip of a prestressed concrete pipe pile according to claim 1, characterized in that: be provided with horizontal lacing wire (22) between end body (21) inner wall, two terminal surfaces of horizontal lacing wire (22) respectively rigid coupling in end body (21) inner wall surface.

6. The pile tip of a prestressed concrete pipe pile according to claim 1, characterized in that: end body (21) deviates from the terminal surface rigid coupling of pile body (11) has end point (23), end point (23) are round platform shape, just the lower terminal surface of end point (23) with the upper surface size of end body (21) is the same, end point (23) adopt steel material to construct.

7. The pile tip of a prestressed concrete pipe pile according to claim 1, characterized in that: a plurality of steel blocks (24) are fixedly connected to the outer peripheral surface of the end body (21), the steel blocks (24) are rectangular, and the steel blocks (24) are laid along the length direction of the end body (21).

8. The pile tip of a prestressed concrete pipe pile according to claim 1, characterized in that: a steel frame (25) is fixedly connected between the outer wall and the inner wall of the end head body (21), the steel frame (25) is triangular, and the upper end face and the lower end face of the steel frame (25) are tightly abutted to the outer wall and the inner wall of the end head body.