CN114411705A

CN114411705A - Precast pile connecting piece, precast pile connecting structure and precast pile

Info

Publication number: CN114411705A
Application number: CN202210264196.XA
Authority: CN
Inventors: 钟智谦; 钟肇鸿
Original assignee: Guangzhou Tianxing Machinery Joint Co ltd
Current assignee: Guangzhou Tianxing Machinery Joint Co ltd
Priority date: 2022-03-17
Filing date: 2022-03-17
Publication date: 2022-04-29

Abstract

The invention relates to a precast pile connecting piece, a precast pile connecting structure and a precast pile. The precast pile connecting piece comprises a sleeve, one end of the sleeve is open, the other end of the sleeve is provided with a sleeve bottom, and the sleeve bottom is provided with a through hole for the steel bar pier head to pass through; a plurality of limiting pieces are sleeved on the outer sides of the plurality of limiting pieces in the circumferential direction, and the elastic pieces enable the plurality of limiting pieces to have the tendency of contracting towards the center so as to form a limiting hole with a variable diameter; wherein, the maximum diameter more than or equal to the external diameter of reinforcing bar pier head in spacing hole, the minimum diameter in spacing hole is less than the external diameter of reinforcing bar pier head, and the minimum external diameter of restraint gasket is greater than the aperture of through-hole. The precast pile connecting piece enables the reinforcing steel bars to be pier-headed before being inserted into the sleeve, and reduces the operation difficulty. The elastic pieces are sleeved outside the plurality of restraint pieces together, so that the restraint pieces are effectively prevented from scattering due to lack of circumferential restraint, and the reliability is improved.

Description

Precast pile connecting piece, precast pile connecting structure and precast pile

Technical Field

The invention relates to the technical field of prestressed concrete precast pile connecting structures, in particular to a precast pile connecting piece, a precast pile connecting structure and a precast pile.

Background

At present, the quantity of concrete precast piles used in the fields of industrial and civil buildings, railways, roads, municipal works and the like is more and more, and the proportion of precast piles used for pile foundation uplift is more than 20%.

As for the connection method of the precast pile, particularly the connection mode of the vertical steel bars, as shown in fig. 1, the precast pile connection structure in the prior art mainly includes a sleeve arranged at an end of the precast pile, one end of the sleeve is communicated with an end face of the precast pile, and the other end of the sleeve is provided with an opening for the vertical steel bars to pass through. And (5) the reinforcing steel bar passes through the opening to enter the sleeve and then is treated by the pier head. The end of reinforcing bar becomes thick under the pressure effect for the size of reinforcing bar pier nose part is greater than the size of trompil, so alright prevent that the reinforcing bar from following trompil department with the sleeve separation realizes vertical reinforcing bar and telescopic being connected. However, the configuration operation of the precast pile connecting structure in the prior art is complicated, and the difficulty of pier erection after the steel bar penetrates into the sleeve is high.

Disclosure of Invention

Based on the prefabricated pile connecting piece, the prefabricated pile connecting structure and the prefabricated pile, the novel prefabricated pile connecting piece allows the end of the vertical steel bar to be inserted into the sleeve after pier head treatment, configuration operation of the prefabricated pile connecting structure is changed, operation difficulty is reduced, and assembly efficiency is improved.

The invention discloses a precast pile connecting piece in a first aspect, which comprises a sleeve, wherein one end of the sleeve is open, the other end of the sleeve is provided with a sleeve bottom, and the sleeve bottom is provided with a through hole for a steel bar pier head to pass through; a plurality of limiting pieces are sleeved on the outer sides of the plurality of limiting pieces in the circumferential direction together, and the elastic pieces enable the plurality of limiting pieces to have the tendency of contracting towards the center so as to form a limiting hole with a variable diameter; the maximum diameter of the limiting hole is larger than or equal to the outer diameter of the steel bar pier head, the minimum diameter of the limiting hole is smaller than the outer diameter of the steel bar pier head, and the minimum outer diameter of the restraining gasket is larger than the aperture of the through hole.

In one embodiment, the circumferential outer surface of the restraint member is provided with a groove for mounting the elastic member.

In one embodiment, the groove and/or the surface of the elastic element is provided with an anti-slip structure.

In one embodiment, the elastic member is an annular elastic clip with a break point or a closed flexible elastic ring.

In one embodiment, the annular elastic clamping piece with the break points is provided with at least one protrusion which uniformly separates the annular elastic clamping piece in the circumferential direction, and the constraining pieces are uniformly arranged on two sides of each protrusion.

In one embodiment, the hole wall of the limiting hole is attached to the outer contour of the steel bar pier head.

The invention discloses a precast pile connecting structure in a second aspect, which comprises a connecting pin and any one of the precast pile connecting pieces, wherein one end of the connecting pin is used for being connected with the sleeve, and the other end of the connecting pin is used for being connected with a precast pile. The invention discloses a precast pile in a third aspect, which comprises two opposite sections of piles and the precast pile connecting structure, wherein the precast pile connecting piece is arranged in at least one section of pile, a steel bar pier head of the section of pile penetrates through the through hole and is connected with the sleeve through the constraint gasket, one end of the connecting pin is connected with the sleeve, and the other end of the connecting pin is connected with the other opposite section of pile.

In one embodiment, the reinforcing steel bar pier head is connected with the constraint gasket, and the constraint gasket is abutted against the cylinder bottom of the sleeve.

In one embodiment, the steel bar pier head, the constraint gasket and the sleeve are connected through a bar planting glue structure.

Advantageous effects

Compared with the prior art, the precast pile connecting piece has the advantages that the through hole is formed in the cylinder bottom, the restraining gasket is provided with the limiting hole with the variable diameter, the maximum diameter of the limiting hole is limited to be larger than the outer diameter of the pier head of the steel bar, and the outer diameter of the restraining gasket is larger than the outer diameter of the through hole, so that an operator can perform pier head operation before inserting the steel bar into the sleeve, and the operation difficulty of pier head of the steel bar is reduced. The constraint gasket is arranged to comprise a plurality of constraint parts which are circumferentially arranged, and the elastic parts are sleeved outside the constraint parts together, so that the constraint parts can be normally unfolded to be sleeved on the reinforcing steel bars, and in the unfolding process of the constraint parts, the constraint parts always keep the integrally circumferentially arranged form, the situation that the constraint parts are completely scattered due to lack of circumferential constraint in the unfolding process is effectively avoided, and the use reliability of the precast pile connecting piece is greatly improved.

Drawings

FIG. 1 is a schematic view of a precast pile connection element according to the prior art;

fig. 2 is a schematic view of the precast pile connection element according to the present invention in some embodiments;

fig. 3 is a schematic view of a restraining shim of the precast pile connecting element according to the present invention in some embodiments;

FIG. 4 is a cross-sectional view of the restraint gasket of FIG. 3 at section A-A;

fig. 5 is a schematic view of restraining shims of the precast pile connection element according to further embodiments of the present invention;

fig. 6 is a schematic view of restraining shims of the precast pile connecting element according to still further embodiments of the present invention;

fig. 7 is a schematic view of a bar-planting adhesive structure of the precast pile according to a part of the embodiments of the present invention;

fig. 8 is a schematic view of the precast pile connecting structure and its application to a precast pile according to some embodiments of the present invention;

wherein, 1 is the sleeve, 11 is the section of thick bamboo wall, 12 is the bobbin base, 13 is the through-hole, 2 is the restraint gasket, 21 is the restraint piece, 210 is the pore wall, 22 is the elastic component, 220 is the breakpoint, 221 is the arch, 3 is the reinforcing bar pier nose, 4 is the bar planting glued structure, 5 is the connecting pin, 100 is first section stake, 200 is the second section stake.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 2, fig. 2 shows a precast pile connecting piece according to the present invention, which includes a sleeve 1 and a restraining pad 2, wherein the sleeve 1 includes a barrel wall 11 and a barrel bottom 12, the barrel bottom 12 is provided with a through hole 13, the size of the through hole 13 is larger than that of the steel bar pier head 3, the steel bar can be firstly pier-headed to form the steel bar pier head 3, and then the steel bar pier head 3 penetrates through the through hole 13 and enters the sleeve 1. The other end of the sleeve 1 opposite the base 12 is open for connection to other precast pile connection assemblies. A constraining gasket 2 is disposed within the sleeve 1. Fig. 3 is a schematic view of a restraint gasket 2, fig. 4 is a cross-sectional view of the restraint gasket 2 in a cross section a-a in fig. 3, and as can be seen from fig. 3 and 4, the restraint gasket 2 includes a plurality of restraint members 21, the plurality of restraint members 21 are arranged in the sleeve 1 along the circumferential direction of the sleeve 1, the circumferential outer sides of the plurality of restraint members 21 are commonly sleeved with elastic members 22, the elastic members 22 have a tendency of contracting the plurality of restraint members 21 towards the center, and the plurality of restraint members 21 surround a limiting hole 20 with a variable aperture. The maximum aperture of the limiting hole 20 should be larger than the maximum outer diameter of the steel bar pier head 3, the minimum aperture of the limiting hole 20 should be smaller than the maximum outer diameter of the steel bar pier head 3, and the minimum outer diameter of the restraining gasket 2 is larger than the aperture of the through hole 13.

When the precast pile connecting piece is used, firstly, the reinforcing steel bars are treated by pier heads, and reinforcing steel bar pier heads 3 are formed at the end heads of the reinforcing steel bars. After which the rebar pier 3 is passed through the through hole 13 of the sleeve 1 into the sleeve 1. In the sleeve 1, the restraint gasket 2 is propped open outwards along the radial direction thereof by force, and under the action of external force, the plurality of restraint parts 21 move outwards along the radial direction thereof, so that the aperture of the limiting hole 20 surrounded by the restraint parts 21 is increased. When the aperture of spacing hole 20 is greater than the size of reinforcing bar pier head 3, restraint gasket 2 passes reinforcing bar pier head 3 through spacing hole 20. Then, external force is removed, under the action of the elastic piece 22, the plurality of restraining pieces 21 shrink towards the center, the aperture of the limiting hole 20 is reduced, so that the restraining gasket 2 is clamped on the reinforcing steel bar, the reinforcing steel bar pier head 3 is cushioned on the restraining gasket 2, and the restraining gasket 2 and the reinforcing steel bar form stable connection which cannot be separated. Because the external diameter of restraint gasket 2 is greater than the aperture of through-hole 13, the reinforcing bar that has even become an organic whole with restraint gasket 2 naturally also can't pass through-hole 13 and separate with sleeve 1, finally realizes the reliable connection of reinforcing bar and precast pile connecting piece.

According to the precast pile connecting piece, the through hole 13 with the aperture larger than the outer diameter of the steel bar pier head 3 is formed in the tube bottom 12 of the sleeve 1, and the telescopic constraint gasket 2 is arranged in the sleeve 1, so that the steel bar treated by the pier head can still smoothly extend into the sleeve 1 and can be reliably connected with the sleeve. Compared with the prior art, the precast pile connecting piece allows an operator to perform pier head operation before inserting the reinforcing steel bar into the sleeve, and reduces the operation difficulty of pier head operation on the reinforcing steel bar. The restraining gasket 2 is provided with the plurality of circumferentially arranged restraining parts 21, and the elastic parts 22 are sleeved outside the plurality of restraining parts 21 together, so that the plurality of restraining parts 21 can be normally unfolded to be sleeved on the reinforcing steel bars, and in the unfolding process of the restraining parts, the plurality of restraining parts 21 always keep the integrally circumferentially arranged form, the situation that the plurality of restraining parts 21 are completely scattered due to lack of circumferential restraint in the unfolding process is effectively avoided, and the use reliability of the precast pile connecting piece is greatly improved.

Specifically, as shown in fig. 3, in some embodiments, a groove for installing an elastic member 22 is formed on a circumferential outer surface of each of the plurality of constraining members 21 of the precast pile connecting member according to the present invention. The groove plays a role in mounting and fixing the elastic piece 22, and can fix the axial positions of the plurality of constraining pieces 21, so that the constraining pieces 21 are prevented from being damaged by the fact that the constraining pieces 21 are overturned and the like due to axial movement of the constraining pieces 21 when the constraining pieces 21 move radially outwards, and the reliability of the constraining gasket 2 in use is further improved. Further preferably, as shown in fig. 3, in some embodiments, the elastic member 22 does not completely sink into the groove, but at least a portion of the elastic member extends out of the groove, so that the elastic member 22 can be easily attached to and detached from the restraining member 21, and time and labor cost for installation and maintenance in case of failure can be reduced.

Preferably, in some embodiments, the surface of the groove, which is contacted by the elastic member 22, is provided with an anti-slip structure, such as an anti-slip pattern, or the surface thereof is roughened. So, except the limiting effect of recess itself to elastic component 22, the great increase of frictional force between recess and the elastic component 22 will further improve the stability of being connected of restraint piece 21 and elastic component 22, ensures that restraint gasket 2 can strut smoothly and pass through and block on the reinforcing bar for reinforcing bar pier nose 3.

It will be understood that the specific form of the elastic member 22 of the precast pile connecting element of the present invention is not strictly limited, as long as the elastic member 22 can be integrally sleeved on the circumferential outer sides of all the constraining members 21 and provide the radial movement tendency thereof. For example, in some embodiments, the elastic member 22 is a closed elastic ring, such as a rubber ring, which provides the constraining member 21 with circumferential constraint and radial, elastic force converging toward the center by its own elasticity. In other embodiments, the elastic member 22 is an annular elastic clip having a breaking point 220, and specifically may be a metal clip, which is clamped on the circumferential outer side of the constraining member 21, and the structure of the clip and the material of the metal thereof are utilizedThe feature provides circumferential restraint and radial, centrally-convergent spring force to the restraint 21. Both of the above solutions can make the constraining pieces 21 maintain the overall circumferential distribution, and can enclose the limiting hole 20 with a retractable hole diameter, which has good operability in practice. As some realizable embodiments, the annular elastic fastener with break points preferably uses 50CrMn, 60Si₂And manufacturing spring steel such as MnA.

Preferably, in some embodiments, the annular elastic clip with the break point is further provided with a plurality of inward protrusions 221 uniformly distributed in the circumferential direction, the protrusions 221 divide the annular elastic clip into a plurality of sections uniformly distributed in the circumferential direction, and a plurality of constraining pieces 21 are uniformly installed in the sections. So set up, can ensure about piece 21 ascending evenly distributed in week, and then can be when 2 block of restraint gasket on the reinforcing bar, the atress of a plurality of about piece 21 is balanced, effectively improves the performance when 2 blocks of restraint gasket and reinforcing bar. In some embodiments, when the restraints are two semi-circles, the protrusion 221 may be only one. In other embodiments, when the number of the constraining members is more than two, the protrusions 221 may be provided in two or more.

It should be noted that the number of the restraining members 21 in the precast pile connecting element of the present invention is not limited, and as shown in fig. 4, the restraining members 21 may be four, two or three as shown in fig. 5 and 6, or may be more. Of course, the number of the constraining members 21 of the constraining spacer 2 should not be too large. Since the restraining pad 2 has a limited size, when the number of the restraining members 21 is excessive, the size of each restraining member 21 is very small, resulting in a reduction in the strength of the individual restraining members 21. When the restraint member 21 is spread and engaged with the reinforcing bar, the restraint member 21 may be damaged by an external force or even by a force at the time of engagement. On the other hand, the single restraint piece 21 is small in size and prone to overturn in the process of propping open the restraint gasket 2, so that the fastening of the reinforcing steel bar and the restraint gasket 2 fails, and potential safety hazards appear. The number of the restraining members 21 can be adjusted by those skilled in the art according to the actual situation. As some realizable embodiments, the constraints 21 are configured to be 3-5.

In order to further improve the clamping performance of the restraint gasket 2 on the steel bar and the limiting effect of the restraint gasket 2 on the steel bar pier head 3, the hole wall 210 of the limiting hole 20 formed by the circumferential inner surface of the restraint piece 21 is arranged to be attached to the outer contour of the steel bar pier head 3. For example, when the cross-section of the reinforcement pier 3 in the longitudinal direction is tapered, the hole wall of the limiting hole 20 is configured as an inclined surface matching with the taper. So, restraint gasket 2 plays the ascending limiting displacement of axial to reinforcing bar pier nose 3 on the one hand, and on the other hand restraint gasket 2 is also fixed with reinforcing bar pier nose 3's radial position, makes restraint gasket 2 be difficult for coming off from reinforcing bar pier nose 3 more, has guaranteed restraint gasket 2 and reinforcing bar pier nose 3's cooperation reliability.

In another aspect of the present invention, a precast pile connecting structure is disclosed, as shown in fig. 8, which is a schematic use diagram of the precast pile connecting structure, and the precast pile connecting structure includes a connecting pin 5 and any one of the precast pile connecting members described above. One end of the connecting pin is used for being connected with the sleeve of the precast pile connecting piece, and the other end of the connecting pin is used for being connected with the precast pile. Specifically, in the illustrated embodiment, the precast pile connecting member is installed in a segmental pile, the open end of the sleeve 1 communicates with the end surface of the segmental pile, the connecting pin 5 is connected with the open end of the sleeve 1 through the end surface of the segmental pile, and the connecting pin 5 can be connected with another segmental pile. The precast pile connecting structure can not only stably set the reinforcing steel bars in the pile sections, but also rapidly install the connecting pins, and is convenient for connection between the pile sections.

In another aspect of the present invention, a precast pile is disclosed, as shown in fig. 8, which includes a first pile section 100 and a second pile section 200 arranged oppositely. In this embodiment, the precast pile connecting members are disposed at the end surfaces of the first pile section 100 and the second pile section 200, and after the steel pier head 3 passes through the through hole 13 of the bottom 12 of the sleeve 1 and is connected with the restraining pad 2, the restraining pad 2 should abut against the bottom 12. The connecting pin 5 is connected at both ends to the sleeves 1 of the precast pile connectors of the first pile section 100 and the second pile section 200, thereby realizing the connection of the first pile section 100 and the second pile section 200. So set up, the limiting displacement that a plurality of restraint piece 21 of restraint gasket 2 will receive barrel head 12 keeps on the coplanar, avoids restraint piece 21 to appear axial float, improves its stability. In addition, when the reinforcing bar is subjected to a force to separate it from the sleeve 1, the force to which the reinforcing bar is subjected will be transmitted first to the restraining pad 2 and further to the bottom 12 of the cylinder by the restraining pad 2. The series of forces are transmitted stably, and cannot be transmitted to the cylinder wall 11, and component forces in other directions cannot occur, so that the mechanical strength of the sleeve 1 is completely used for meeting the tension of the steel bars, and the engineering performance of the precast pile connecting piece is improved.

In some embodiments, as shown in fig. 7 and 8, in the precast pile of the present invention, the pier head 3 and the restraint shim 2 are connected to the sleeve 1 through a steel cement implanting structure 4. When the restraint gasket 2 is clamped on the steel bar, the steel bar pier head 3 is tightly attached to the limiting hole 20, and the restraint gasket 2 is connected with the sleeve 1, an operator can fill bar-planting glue between the restraint gasket 2 and the steel bar pier head 3, and after the bar-planting glue is solidified, the restraint gasket 2, the steel bar pier head 3 and the sleeve 1 are integrated, so that the connection stability of the steel bar and the precast pile connecting piece is greatly improved.

Specifically, in some embodiments, end plates are disposed on end faces of the first pile section 100 and the second pile section 200, threaded holes are disposed on the end plates, external threads are disposed on an outer circumferential surface of an open end of a sleeve of the precast pile connecting member, and the sleeve is in threaded connection with the threaded holes on the end plates. The reinforcing bars in the first pile section 100 and the second pile section 200 are connected with the restraining washers in the respective sleeves. The connecting pin 5 is mounted on the sleeve of one of the piles and inserted into the locking member in the sleeve of the other pile so that the first pile 100 is integrated with the second pile 200. After that, the end plates of the first pile section 100 and the second pile section 200 are welded. Through set up aforementioned precast pile connection structure in the precast pile, can guarantee under the prerequisite of precast pile's performance, reduce the assembly degree of difficulty of precast pile. Since the specific structure, functional principle and technical effect of the sleeves, restraining gaskets and the like in the precast pile connecting piece are detailed in the foregoing, detailed description is omitted here. Reference is made to the above description for any technical details regarding the precast pile connectors.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A precast pile connecting piece is characterized by comprising a sleeve, wherein one end of the sleeve is open, the other end of the sleeve is provided with a cylinder bottom, and the cylinder bottom is provided with a through hole for a steel bar pier head to pass through;

a constraint gasket is arranged in the sleeve and comprises at least two constraint parts arranged along the circumferential direction of the sleeve, elastic parts are sleeved on the circumferential outer sides of the plurality of constraint parts together, and the elastic parts enable the constraint parts to have the tendency of contracting towards the center so as to form a limiting hole with a variable diameter;

the maximum diameter of the limiting hole is larger than or equal to the outer diameter of the steel bar pier head, the minimum diameter of the limiting hole is smaller than the outer diameter of the steel bar pier head, and the minimum outer diameter of the restraining gasket is larger than the aperture of the through hole.

2. A precast pile connection element according to claim 1, wherein a circumferential outer surface of the restraining element is provided with a groove in which the elastic element is fitted.

3. A precast pile connection element according to claim 2, characterized in that the groove and/or the resilient element surface is provided with an anti-slip structure.

4. A precast pile connection member according to any one of claims 1 to 3, wherein the elastic member is a ring-shaped elastic catch having a break point or a closed flexible elastic ring.

5. A precast pile connection member according to claim 4, wherein the ring-shaped elastic snap piece having the breaking point is provided with at least one inward protrusion circumferentially and uniformly separating the ring-shaped elastic snap piece circumferentially, and the constraining piece is uniformly provided on both sides of each protrusion.

6. The precast pile connecting piece according to claim 1, wherein the hole wall of the limiting hole is fitted to the outer contour of the steel bar pier head.

7. A precast pile connecting structure comprising a connecting pin and the precast pile connecting member according to any one of claims 1 to 6, wherein one end of the connecting pin is adapted to be connected to the sleeve, and the other end of the connecting pin is adapted to be connected to a precast pile.

8. A precast pile, comprising two opposite sections of piles and the precast pile connecting structure of claim 7, wherein the precast pile connecting member is arranged in at least one section of pile, a steel bar pier head of the section of pile passes through the through hole and is connected with the sleeve through the restraining gasket, one end of the connecting pin is connected with the sleeve, and the other end of the connecting pin is connected with the other opposite section of pile.

9. The precast pile of claim 8, wherein the rebar pier head is connected with the restraining washer, and the restraining washer abuts against the bottom of the sleeve.

10. The precast pile of claim 9, wherein the rebar pier head and the restraining pad are connected with the sleeve through a bar-planting cement structure.