CN210827449U

CN210827449U - PHC tubular pile tip

Info

Publication number: CN210827449U
Application number: CN201921710142.1U
Authority: CN
Inventors: 王大磊; 王进; 于闯; 余江利; 施珽; 林科海; 邓小金
Original assignee: China 19th Metallurgical Corp
Current assignee: China 19th Metallurgical Corp
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-06-23
Anticipated expiration: 2029-10-12

Abstract

The utility model relates to the technical field of PHC tubular piles, and provides a PHC tubular pile toe, which comprises a sealing plate, a toe main body and a toe head which are connected in sequence; the sealing plate is of a disc-shaped structure, the pile tip main body is of a cylindrical structure, and the head of the pile tip is of a conical structure; the central line of the sealing plate, the central line of the pile tip main body and the central line of the pile tip head are positioned on the same straight line; the pile tip comprises a pile tip main body and is characterized by also comprising at least three inclined supporting rods which are uniformly distributed along the circumference of the pile tip main body; one end of the diagonal brace is connected with the sealing plate, and the other end of the diagonal brace is connected with the pile tip main body; at least two sawtooth blocks are arranged on the inclined stay bar at intervals along the length direction of the inclined stay bar. The utility model discloses PHC tubular pile stake point for install in the bottom of tubular pile when PHC tubular pile sinks the construction, not only can balance the bearing stress of tubular pile bottom, avoid the tubular pile to destroy because of local stress is too big, can strengthen the penetrability to the soil layer when executing to beat of PHC tubular pile moreover, and guarantee the straightness that hangs down of pile body, reduce disconnected stake probability.

Description

PHC tubular pile tip

Technical Field

The utility model relates to a PHC tubular pile technical field, in particular to PHC tubular pile stake point.

Background

At present, PHC tubular piles are more and more generally applied to the fields of house buildings, large public buildings, hydraulic engineering buildings and the like due to the advantages of high strength, simplicity and convenience in construction, great reduction in construction period and the like. The PHC pipe pile body concrete has high strength, can be driven into a compact sand layer and a strong weathered rock layer, and has the advantages that the bearing capacity of the bottom end of the pipe pile can be improved by 70-80 percent compared with the original soil quality and the side surface frictional resistance of the pipe pile is improved by 20-40 percent due to the extrusion effect. With the wider application of the PHC tubular pile, some practical construction problems are shown. In some soil layers, due to the local existence of boulders, hard sand layers and the like, the PHC tubular pile is very difficult to drive into the ground, and the PHC tubular pile can be deviated in the sinking process, so that the pile head can be damaged even by serious people.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a PHC tubular pile stake point for strengthening PHC tubular pile is when executing to beat the penetrability to the soil layer is provided.

The utility model provides a technical scheme that its technical problem adopted is: the PHC tubular pile tip comprises a sealing plate, a pile tip main body and a pile tip head which are sequentially connected; the seal plate is of a disc-shaped structure, the pile tip main body is of a cylindrical structure, and the head of the pile tip is of a conical structure; the diameter of the sealing plate is D1, the outer diameter of the main body of the pile tip is D2, wherein D2 is less than D1; the central line of the sealing plate, the central line of the pile tip main body and the central line of the pile tip head are positioned on the same straight line;

the pile tip comprises a pile tip main body and is characterized by also comprising at least three inclined supporting rods which are uniformly distributed along the circumference of the pile tip main body; one end of the inclined strut is connected with the sealing plate, and the other end of the inclined strut is connected with the pile tip main body; at least two sawtooth blocks are arranged on the inclined supporting rod at intervals along the length direction of the inclined supporting rod.

Further, the inclined supporting rod is connected with the sealing plate through a reinforcing piece.

Furthermore, the reinforcing piece is of a long strip-shaped structure, and the length direction of the reinforcing piece is arranged along the radial direction of the sealing plate.

Furthermore, one end of the reinforcing piece is fixedly connected with the outer surface of the pile tip main body.

Furthermore, the positioning device also comprises a positioning cylinder which is sleeved on the sealing plate and is fixedly connected with the sealing plate, and the central line of the positioning cylinder and the central line of the sealing plate are positioned on the same straight line.

Furthermore, the other end of the reinforcing piece is fixedly connected with the inner surface of the positioning cylinder.

Furthermore, the surface of the seal plate, on which the pile tip main body is not arranged, is flush with the end surface of the positioning cylinder.

The utility model has the advantages that: the PHC tubular pile tip of the embodiment of the utility model is used for being installed at the bottom end of the tubular pile when the PHC tubular pile is sunk for construction; the end of the PHC tubular pile is protected through the sealing plate, so that a soil layer is prevented from entering an inner cavity of the tubular pile, and the pile breaking probability of the tubular pile is reduced; the central line of the sealing plate, the central line of the pile tip main body and the central line of the pile tip head are arranged on the same straight line, so that the pile body is ensured to be always vertical in the process of driving the tubular pile; by arranging at least three inclined support rods, the deviation of a pile tip caused by uneven stress of a boulder, a hard sand layer and the like of the pipe pile can be prevented; the sawtooth blocks are arranged on the inclined support rods, so that the pile tips can penetrate through the boulder and the hard sand layer, and the penetrating capacity of the PHC tubular pile to the soil layer during driving is improved.

Drawings

Fig. 1 is a perspective view of a PHC tubular pile tip according to an embodiment of the present invention;

fig. 2 is a schematic plane structure view of a PHC tubular pile tip according to an embodiment of the present invention;

FIG. 3 is a top view of FIG. 2;

fig. 4 is a schematic structural view of the PHC tubular pile after the pile tip of the PHC tubular pile is connected with the PHC tubular pile.

The reference numbers in the figures are: the method comprises the following steps of 1-sealing plate, 2-pile tip main body, 3-pile tip head, 4-diagonal brace rod, 5-sawtooth block, 6-reinforcing piece, 7-positioning cylinder and 8-PHC tubular pile.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

The PHC tubular pile tip of the embodiment of the utility model comprises a sealing plate 1, a pile tip main body 2 and a pile tip head 3 which are connected in sequence; the seal plate 1 is of a disc-shaped structure, the pile tip main body 2 is of a cylindrical structure, and the pile tip head 3 is of a conical structure; the diameter of the sealing plate 1 is D1, the outer diameter of the pile tip main body 2 is D2, wherein D2 is less than D1; the central line of the seal plate 1, the central line of the pile tip main body 2 and the central line of the pile tip head 3 are positioned on the same straight line; the pile tip comprises a pile tip main body 2 and is characterized by further comprising at least three inclined supporting rods 4 uniformly distributed along the circumference of the pile tip main body 2; one end of the diagonal brace 4 is connected with the sealing plate 1, and the other end of the diagonal brace is connected with the pile tip main body 2; at least two sawtooth blocks 5 are arranged on the inclined stay bar 4 at intervals along the length direction of the inclined stay bar.

As shown in fig. 1 to 3, the sealing plate 1 has a disc-shaped structure, which can be made of a steel plate. The effect of shrouding 1 is the opening that is used for shutoff PHC tubular pile 8 bottom, during the use, fixes shrouding 1 in PHC tubular pile 8's bottom, and when PHC tubular pile 8 at the sunken in-process, through shrouding 1's the effect that blocks, during avoiding the soil layer to get into PHC tubular pile 8's inner chamber, reduced PHC tubular pile 8's disconnected stake probability.

As shown in fig. 1 and 2, the pile tip main body 2 is a cylindrical structure, and may be made of round steel or steel pipe. The pile toe head 3 is of a conical structure and can be machined by round steel or steel plates. In the PHC tubular pile tip of the embodiment, during manufacturing, the pile tip head 3 is welded at one end of the pile tip main body 2, and the outer diameter of the connection position of the pile tip head 3 and the pile tip main body 2 is equal to the outer diameter of the pile tip main body 2; the other end of stake point main part 2 welds on shrouding 1's surface, and makes shrouding 1's central line, the central line of stake point main part 2 and the central line of stake point head 3 be located same straight line, like this at the sunken in-process of PHC tubular pile 8, can ensure that the pile body remains the verticality throughout.

As shown in fig. 1 to 3, in the PHC tubular pile tip of the present embodiment, at least three diagonal braces 4 are uniformly distributed along the circumference of the tip main body 2; the inclined supporting rod 4 can be made of flat steel or steel plates. One end of each diagonal brace 4 is welded on the surface of the sealing plate 1, and the other end of each diagonal brace 4 is welded on the outer surface of the pile tip main body 2; preferably, as shown in fig. 2, for the same diagonal brace 4, one end of the diagonal brace 4 is welded on the surface of the sealing plate 1 and is close to the edge of the surface of the sealing plate 1, and the other end of the diagonal brace 4 is welded on the outer surface of the pointed main body 2 and is close to the connection position of the pointed main body 2 and the pointed head 3. Through setting up diagonal brace 4, at first increased the intensity and the rigidity of PHC tubular pile stake point, secondly at the sunken in-process of PHC tubular pile 8, play the positioning action, prevent that the tubular pile from leading to the stake point off tracking because of the inhomogeneous atress of boulder, hard sand bed etc..

As shown in fig. 1 to 3, at least two sawtooth blocks 5 are arranged on each diagonal strut 4 at intervals along the length direction thereof. The sawtooth block 5 can be made of steel, and after the sawtooth block 5 is made, the sawtooth block is welded on the inclined stay bar 4. The sawtooth block 5 is arranged, so that the pile tip can penetrate through the boulder and the hard sand layer; after the pile tip is installed to the bottom end of the tubular pile, the penetrating capability of the PHC tubular pile 8 to the soil layer during driving can be improved.

In order to further improve the structural strength and rigidity of the panel 1, the diagonal braces 4 are connected to the panel 1 by reinforcing members 6. The reinforcement 6 is made of steel, and may be, for example, a steel bar, a steel plate, a flat steel, or the like. The reinforcement 6 is welded to the surface of the panel 1 to reinforce the panel 1, and the end of the diagonal brace 4 is welded to the reinforcement 6. As shown in fig. 1 and 2, the reinforcing member 6 has a long strip-shaped structure, and the length direction thereof is arranged along the radial direction of the sealing plate 1. Further, one end of the reinforcing member 6 is fixedly connected with the outer surface of the pile tip main body 2, and particularly, the end part of the reinforcing member 6 is welded on the outer surface of the pile tip main body 2.

In order to further improve the stability of PHC tubular pile stake point in the process of sinking, PHC tubular pile stake point still including the cover on shrouding 1, and with shrouding fixed connection's a location section of thick bamboo 7, the central line of this location section of thick bamboo 7 is located same straight line with shrouding 1's central line. As shown in fig. 1 to 3, the positioning cylinder 7 may be made of steel, the outer diameter of the positioning cylinder 7 is equal to the outer diameter of the PHC pile 8, the inner diameter of the positioning cylinder 7 is equal to the outer diameter of the sealing plate 1, and the positioning cylinder 7 plays a role in positioning when the pile tip sinks, so as to prevent the pile tip from shifting. In order to further improve the strength and rigidity of the pile tip of the PHC tubular pile, preferably, the other end of the reinforcing member 6 is fixedly connected with the inner surface of the positioning cylinder 7, and specifically, the other end of the reinforcing member 6 is welded on the inner surface of the positioning cylinder 7. Further, the surface that does not set up stake point main part 2 on shrouding 1 with the terminal surface parallel and level of a location section of thick bamboo 7, as shown in fig. 2, the upper surface of shrouding 1 is provided with stake point main part 2, and the lower surface of shrouding 1 does not set up stake point main part 2, consequently, the lower surface of shrouding 1 and the lower terminal surface parallel and level of stake point main part 2.

The utility model discloses PHC tubular pile stake point is after the equipment is accomplished, as shown in fig. 4, fix the stake point in PHC tubular pile 8's bottom, it is concrete, at first make behind shrouding 1 and PHC tubular pile 8's bottom butt, then weld locating cylinder 7 and PHC tubular pile 8, and guarantee that the central line of stake point main part 2 is located same straight line with PHC tubular pile 8's central line, then aim at subaerial position with stake point head 3 and can execute and beat PHC tubular pile 8, PHC tubular pile 8 sinks frictional force of in-process and transmits for stake point main part 2 through stake point head 3 respectively, transmit for reinforcement 6 through diagonal brace 4, then transmit for shrouding 1 through stake point main part 2 and reinforcement 6, transmit for PHC tubular pile 8 through shrouding 1, locating cylinder 7 plays the effect of connecting tubular pile and stake point in this process, and plays the effect of location.

The utility model discloses PHC tubular pile stake point for install in the bottom of tubular pile when PHC tubular pile 8 sinks the construction, play the effect of guide and shutoff, not only can balance the bearing stress of tubular pile bottom, avoid the tubular pile to destroy because of local stress is too big, can strengthen PHC tubular pile 8 moreover and beat the penetrating power to the soil layer when executing, and guarantee the straightness that hangs down of pile body, reduce disconnected pile probability.

Claims

The PHC tubular pile tip is characterized by comprising a sealing plate (1), a pile tip main body (2) and a pile tip head (3) which are sequentially connected; the sealing plate (1) is of a disc-shaped structure, the pile tip main body (2) is of a cylindrical structure, and the pile tip head (3) is of a conical structure; the diameter of the sealing plate (1) is D1, the outer diameter of the pile tip main body (2) is D2, wherein D2 is less than D1; the central line of the sealing plate (1), the central line of the pile tip main body (2) and the central line of the pile tip head (3) are positioned on the same straight line;

the pile tip is characterized by further comprising at least three inclined supporting rods (4) which are uniformly distributed along the circumference of the pile tip main body (2); one end of the diagonal brace (4) is connected with the sealing plate (1), and the other end of the diagonal brace is connected with the pile tip main body (2); at least two sawtooth blocks (5) are arranged on the inclined stay bar (4) at intervals along the length direction of the inclined stay bar.
2. The PHC pile tip as claimed in claim 1, wherein the diagonal brace (4) is connected to the sealing plate (1) by a reinforcement (6).
3. The PHC pile tip as claimed in claim 2, wherein the reinforcement member (6) is of an elongated structure, and the length direction of the reinforcement member is arranged along the radial direction of the sealing plate (1).
4. The PHC pile toe of claim 3, wherein one end of the reinforcing member (6) is fixedly connected with the outer surface of the toe body (2).
5. The PHC pile tip as claimed in claim 4, further comprising a positioning cylinder (7) sleeved on the sealing plate (1) and fixedly connected with the sealing plate, wherein the center line of the positioning cylinder (7) is aligned with the center line of the sealing plate (1).
6. The PHC pile toe according to claim 5, characterized in that the other end of the reinforcing member (6) is fixedly connected with the inner surface of the positioning cylinder (7).
7. The PHC pile tip as claimed in claim 6, wherein the surface of the sealing plate (1) where the tip main body (2) is not arranged is flush with the end surface of the positioning cylinder (7).