Pipe pile components

Abstract

The present invention provides a pipe pile assembly, comprising: a first pipe pile, comprising a first body and a first joint connected to one end of the first body, a first skirt plate is circumferentially arranged on the outer surface of the side wall of the first joint, the first skirt plate comprises a first plate body and a first thickened portion protruding inwardly from the first plate body; a first end plate is arranged at the other end of the first joint; a second pipe pile, comprising a second body and a second joint connected to one end of the second body, a second skirt plate is circumferentially arranged on the outer surface of the side wall of the second joint, the second skirt plate comprises a second plate body and a second thickened portion protruding inwardly from the second plate body; a second end plate is arranged at the other end of the second joint; the second end plate is fixedly connected to the first end plate and the second thickened portion overlaps with the first thickened portion in the circumferential direction; a reinforcing plate is arranged outside the first thickened portion and the second thickened portion, and fixedly connects the first skirt plate and the second skirt plate. The stability of welding is ensured, thereby ensuring the reliability of pipe pile connection.

Description

Technical Field

[0001] The invention relates to the field of building structures, and in particular to a pipe pile assembly. Background Art

[0002] Prestressed concrete pipe piles have the advantages of fast construction speed, high single pile bearing capacity, and good pile quality, and are widely used in actual projects. Limited by production factors and transportation conditions, the length of a single section of pipe piles is generally controlled within 15m. In some areas with poor geological conditions, longer pipe piles need to be driven in, and the length of a single section of pipe piles cannot meet the requirements, so it is necessary to carry out pile connection operations.

[0003] Manual welding is a common way of connecting piles. It is the process of connecting the top of the first pile driven into the ground with the bottom of the next pile by welding. The existing welding pile connection method generally welds the connection of the two pile ends in a circle. The piles welded in this way cannot withstand horizontal forces and have poor bending resistance. In addition, this welding method is greatly affected by factors such as the skill level of the welders and the quality of the welding rods. The quality of the pile connection construction is difficult to guarantee, which makes the reliability of the pile connection low. Summary of the invention

[0004] In view of this, the present invention provides a pipe pile assembly to solve the technical problem of how to improve the reliability of the fixed connection of the pipe pile.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A pipe pile assembly provided by an embodiment of the present invention comprises a first pipe pile, comprising a first body and a first joint connected to one end of the first body, a first skirt plate is circumferentially arranged on the outer surface of a side wall of the first joint, the first skirt plate comprises a first plate body portion and a first thickened portion protruding inwardly from the first plate body portion; a first end plate is arranged at the other end of the first joint, the end face of the first end plate is perpendicular to the axis of the first pipe pile and is fixedly connected to the first skirt plate; a second pipe pile comprises a second body and a second joint connected to one end of the second body, a second skirt plate is circumferentially arranged on the outer surface of a side wall of the second joint, the second skirt plate comprises a second plate body portion and a second thickened portion protruding inwardly from the second plate body portion; a second end plate is arranged at the other end of the second joint, the end face of the second end plate is perpendicular to the axis of the second pipe pile and is fixedly connected to the second skirt plate; the second end plate is fixedly connected to the first end plate and the second thickened portion overlaps with the first thickened portion in the circumferential direction; a reinforcing plate is arranged outside the first thickened portion and the second thickened portion, and the reinforcing plate is fixedly connected to the first skirt plate and the second skirt plate.

[0007] Furthermore, the first skirt plate surrounds the outer surface of the side wall of the first joint, and the first thickened portion is provided in plurality and evenly spaced along the circumferential direction; the second skirt plate surrounds the outer surface of the side wall of the second joint, and the second thickened portion is provided in plurality and evenly spaced along the circumferential direction.

[0008] Furthermore, it also includes: a first connecting member, which is arranged in the cavity surrounded by the first skirt board and connects the two first thickened parts; and a second connecting member, which is arranged in the cavity surrounded by the second skirt board and connects the two second thickened parts.

[0009] Furthermore, the first skirt plate is an axisymmetric structure, and the first thickened portions have a plurality of groups, each group comprising two first thickened portions that are symmetrical with respect to the axis of the first skirt plate.

[0010] Furthermore, the same first connecting member connects two first thickened portions in the same group.

[0011] Furthermore, the second skirt plate is an axisymmetric structure, and the second thickened portion has a plurality of groups, and each group includes two second thickened portions that are symmetrical with respect to the axis of the second skirt plate.

[0012] Furthermore, the same second connecting member connects two second thickened portions in the same group.

[0013] Furthermore, an outer diameter of the first plate body portion is the same as an outer diameter of the second plate body portion.

[0014] Further, the outer diameter of the first plate portion is the same as the outer diameter of the first body, and the outer diameter of the second plate portion is the same as the outer diameter of the second body.

[0015] Furthermore, the inner surfaces of the first skirt board and the second skirt board are wavy, and the inner surfaces of the first thickened portion and the second thickened portion are smooth curved surfaces.

[0016] The pipe pile assembly provided by the embodiment of the present invention comprises a first pipe pile including a first body and a first joint, a first skirt plate is circumferentially arranged on the outer surface of the side wall of the first joint, the first skirt plate includes a first plate body and a first thickened portion protruding inwardly from the first plate body, and a second pipe pile includes a second body and a second joint, a second skirt plate is circumferentially arranged on the outer surface of the side wall of the second joint, the second skirt plate includes a second plate body and a second thickened portion protruding inwardly from the second plate body, and a reinforcing plate is arranged outside the first thickened portion and the second thickened portion, so that the first pipe pile and the second pipe pile are prevented from being offset, and the stability of the force transmission of the pipe pile in the axial direction is ensured; and the connection between the first pipe pile and the second pipe pile can withstand the force perpendicular to the axial direction, and the bending resistance of the pipe pile after the pile connection is enhanced. In addition, the setting of the first thickened portion and the second thickened portion provides connection conditions for welding the reinforcing plate, so that the problem of welding penetration or shallow welding during the welding of the reinforcing plate on the outer wall of the skirt plate, resulting in broken piles or loose connection of the reinforcing plate, is avoided, and the connection reliability of the reinforcing plate is ensured, thereby enhancing the connection stability of the second pipe pile and the first pipe pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a first pipe pile provided in an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of the connection between the first pipe pile and the second pipe pile provided in an embodiment of the present invention;

[0019] Figure 3 for Figure 2 Longitudinal section of

[0020] Figure 4 for Figure 2 Cross-section view in the AA direction.

[0021] Description of reference numerals:

[0022] 10-first pipe pile, 20-first end plate, 30-second end plate, 40-second pipe pile, 50-reinforcement plate, 60-first connecting piece, 70-second connecting piece, 11-first body, 12-first joint, 13-first skirt plate, 131-first plate body, 132-first thickened portion, 41-second body, 42-second joint, 43-second skirt plate, 431-second plate body, 432-second thickened portion. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described implementation is only a part of the implementation of the present invention, not all of the implementation. Based on the implementation of the present invention, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The various specific technical features in the various embodiments described in the specific implementation methods can be combined in various ways without contradiction. For example, different implementation methods can be formed by combining different specific technical features. In order to avoid unnecessary repetition, the various possible combinations of the specific technical features in the present invention will not be described separately.

[0025] In the following description, the terms "first / second" are only used to distinguish similar objects, and do not represent a specific order for the objects. It is understandable that "first / second" can be interchanged in a specific order or sequence where permitted, so that the embodiments of the present invention described herein can be implemented in an order other than that illustrated or described herein. In the following description, the first pipe pile, the first end plate, the first pipe pile, and the second end plate are all axisymmetric structures, and the definition of the inside and outside directions is that the direction toward or close to the axis is the inside, and the opposite direction is the outside.

[0026] In a specific embodiment, pipe piles can be used in the fields of construction, roads, ports and highways to bear the load of the construction. When a single pipe pile cannot meet the bearing capacity requirements, it is often necessary to connect the top of the first pipe pile driven into the ground with the bottom of the second pipe pile to achieve the pile connection operation. In order to meet the needs of pile connection, the ends of the pipe piles are often processed during the prefabrication process, such as Figure 1 As shown, the pipe pile 10 includes a body 11 and a joint 12 connected to the body 11. A skirt plate 13 is provided on the side wall of the joint 12 along the circumferential direction to prevent mold jamming or slurry leakage during the prefabrication of the pipe piles. Generally, it is not used as a connection force between the pipe piles. The other end of the joint 12 is provided with an end plate 14 that is perpendicular to the axial direction of the pipe pile and connected to the joint and the skirt plate, and is used to connect to the pipe pile and the skirt plate and to connect to another section of the pipe pile to achieve extension.

[0027] like Figure 1 As shown, both ends of the pipe pile can be provided with joints, wherein the joint at one end is used to connect with the top end of the pipe pile driven into the ground, and the piling is continued after the connection. After the pipe pile portion is driven into the ground, the joint at the other end is used to connect with another pipe pile to realize further pile connection work. Multiple pile connection operations may be required in one piling project. The pipe pile assembly of the present invention is now described by taking one pile connection operation as an example.

[0028] like Figure 2 As shown, the pipe pile assembly involved in the pile connection operation includes: a first pipe pile 10 , a first end plate 20 , a second pipe pile 30 , a second end plate 40 and a reinforcement plate 50 .

[0029] like Figure 2As shown, the first pipe pile 10 includes a first body 11 and a first joint 12 connected to one end of the first body 11, and a first skirt plate 13 is circumferentially arranged on the outer surface of the side wall of the first joint 12. Specifically, the first pipe pile 10 includes a first body 11 and a first joint 12, the first joint 12 is located at the end of the first pipe pile 10 and connected to the first body 11, the first body 11 and the first joint 12 can be an integrally formed structure, and the first body 11 and the first joint 12 can both be hollow cylinders. A first skirt plate 13 is circumferentially arranged on the outer surface of the side wall of the first joint 12, and the first skirt plate 13 can be a plurality of circumferentially arranged first skirt plates 13, or a circle along the circumferential direction.

[0030] In order to more clearly illustrate the connection structure between the first skirt plate 13 and the first joint 12, Figure 3 Shows Figure 2 The cross-section of the pile assembly along the length direction. Figure 3 As shown, the first skirt board 13 is arranged along the circumference of the outer surface of the first joint 12, and the inner wall surface of the first skirt board 13 is connected to the outer surface of the first joint 12. The inner wall surface of the first skirt board 13 and the outer surface of the first joint 12 can be matched and connected in the following manner: the first pipe pile mold is a hollow cylinder, and the first skirt board is arranged along the circumference of the inner surface of the end of the first pipe pile mold; the pipe pile slurry is filled in the mold, and the slurry is filled to the inner wall surface of the mold and the inner wall surface of the first skirt board, and after the slurry is formed, the inner wall surface of the first skirt board and the outer surface of the first joint are matched and connected. The setting of the first skirt board prevents the first pipe pile from getting stuck during the demoulding process, which helps the second pipe pile to be demoulded smoothly; and it prevents the slurry from leaking from the end of the mold during the prefabrication process of the first pipe pile, which ensures the structural integrity of the pipe pile at the joint and helps to improve the overall strength of the pipe pile; in addition, the thickness of the first skirt board can ensure that the internal space of the skirt board is reserved for slurry filling and molding, and will not occupy too much slurry space, so as not to affect the molding quality of the pipe pile inside the skirt board.

[0031] like Figure 3 As shown, the first end plate 20 is arranged at the other end of the first joint 12, and the end surface of the first end plate 20 is perpendicular to the axis of the first pipe pile 10 and is fixedly connected to the first skirt plate 13. It should be noted that the first end plate 20 is plate-shaped and has an axisymmetric structure, and its end surface is a surface perpendicular to its axis. The end surface of the first end plate 20 is perpendicular to the axis of the first pipe pile 10, that is, the axis of the first end plate 20 and the axis of the first pipe pile 10 are collinear, and the axis refers to the center line of the first pipe pile extending in the length direction. The outer edge of the first end plate 20 is fixedly connected to the first skirt plate along the circumferential direction, and the first end plate is used to connect to the first pipe pile and to connect to another section of the pipe pile.

[0032] Optionally, the first end plate 20 is connected to the first pipe pile 10, and the first pipe pile 10 is provided with main ribs extending in the axial direction and stirrups in the circumferential direction, and the main ribs can penetrate the first end plate to achieve the connection between the first end plate and the first pipe pile; the stirrups can be welded to the inner wall of the first skirt plate to strengthen the connection firmness between the first skirt plate and the first pipe pile. The first end plate is connected to the first pipe pile and the first skirt plate as a whole, ensuring the structural stability of the first end plate.

[0033] like Figure 4 As shown, the first skirt plate 13 includes a first plate body 131 and a first thickened portion 132 protruding inwardly from the first plate body 131. Specifically, the thickness of the first skirt plate 13 in the circumferential direction of the first joint 12 is different, wherein the first thickened portion 132 protrudes from the inner wall of the first plate body 131, and the thickness of the skirt plate in this portion is relatively thick; the first thickened portion 132 is not protruded from the inner wall of the first plate body 131, and the thickness of the first skirt plate in this portion is relatively thin. The first plate body 131 can surround the first joint 12, and the first thickened portion 132 protrudes inwardly from a part of the first plate body 131. The first plate body 131 and the first thickened portion 132 can be integrally formed. The first thickened portion is arranged to provide welding conditions for welding on its outside, thereby avoiding the problem of welding through or welding being too shallow, and providing a basis for enhancing the firmness of welding; at the same time, the first skirt plate is arranged to be a locally thickened structure of the first plate body and the first thickened portion, rather than an overall thickened structure, which saves the material cost of the first skirt plate and ensures that the first skirt plate does not occupy too much pipe pile slurry space, thereby not affecting the forming quality of the pipe piles inside the skirt plate.

[0034] The structure of the second pipe pile is described below. It can be understood that the structure of the second pipe pile may be the same as that of the first pipe pile, or may not be completely the same.

[0035] like Figure 2 As shown, the second pipe pile 40 includes a second body 41 and a second joint 42 connected to one end of the second body 41, and a second skirt 43 is circumferentially provided on the outer surface of the side wall of the second joint 42, and the second skirt 43 includes a second plate body 431 and a second thickened portion 432 protruding inwardly from the second plate body. Specifically, the second pipe pile 40 includes a second body 41 and a second joint 42, and the second body 41 and the second joint 42 can be an integrally formed structure. A second skirt 43 is circumferentially provided on the outer surface of the side wall of the second joint 42, and the second skirt 43 includes a second plate body 431 and a second thickened portion 432. It should be noted that the arrangement of the second plate body and the second thickened portion can be the same as the arrangement of the first plate body and the first thickened portion, which will not be repeated here.

[0036] like Figure 2As shown, the second end plate 30 is arranged at the other end of the second joint 42, and the surface of the second end plate 30 is perpendicular to the axis of the second pipe pile 40 and is fixedly connected to the second skirt plate 43. It should be noted that the second end plate 30 is plate-shaped and has an axisymmetric structure, and its end face is a surface perpendicular to its axis. The end face of the second end plate 30 is perpendicular to the axis of the second pipe pile 40, that is, the axis of the second end plate 30 and the axis of the second pipe pile 40 are collinear, and the axis refers to the center line of the second pipe pile 40 extending in the length direction, and the axis can coincide with the axis of the first pipe pile after the second pipe pile is connected to the first pipe pile. Figure 3 As shown, one side of the second end plate 30 close to the second joint 42 is connected to the second joint 42, and the outer edge of the side is fixedly connected to the second skirt plate 43 along the circumferential direction. The second end plate is used to connect to the second pipe pile and to connect to another pipe pile. The second end plate can be connected to the second skirt plate by welding, and the second end plate, the second joint and the second skirt plate are connected as a whole, which ensures the structural stability of the second end plate.

[0037] like Figure 2 As shown, the second end plate 30 is fixedly connected to the first end plate 20 and the second thickened portion 432 overlaps with the first thickened portion 132 in the circumferential direction. Specifically, the second end plate 30 is fixedly connected to the first end plate 20, and before the fixed connection, it is ensured that the second thickened portion 432 overlaps with the first thickened portion 132 in the circumferential direction, that is, the second thickened portion 432 is aligned with the first thickened portion 132 in the axial direction. The alignment of the second thickened portion 432 with the first thickened portion 132 can be performed in the following manner: the second pipe pile 40 is moved to one end of the first joint 12 of the first pipe pile 10 and is separated from the first end plate 20 by a certain distance, the second pipe pile 40 is aligned with the axis of the first pipe pile 10, the second pipe pile 40 is rotated and the rotation angle of the second pipe pile 40 is finely adjusted until the second thickened portion 432 is aligned with the first thickened portion 132. After ensuring that the second thickened portion 432 is aligned with the first thickened portion 132, the second end plate is fixedly connected to the first end plate, and the fixed connection method may be welding along the circumferential direction of the connection between the second end plate 30 and the first end plate 20. The second end plate is fixedly connected to the first end plate so that the first pipe pile is connected to the second pipe pile, ensuring that the two pipe piles can jointly withstand the force in the axial direction.

[0038] like Figure 2As shown, the reinforcing plate 50 is arranged outside the first thickened portion 132 and the second thickened portion 432, and the reinforcing plate 50 is fixedly connected to the first skirt board 13 and the second skirt board 43. Specifically, the reinforcing plate 50 is connected to the outer wall surface of the first skirt board 13 and the second skirt board 43, and the reinforcing plate 50 is correspondingly arranged outside the first thickened portion 132 and the second thickened portion 432 for connecting the first skirt board 13 and the second skirt board 43. The reinforcing plate 40 axially connects the first skirt board 13 and the second skirt board 43, avoiding the deviation of the first pipe pile and the second pipe pile, and ensuring the stability of the force transmission of the pipe pile in the axial direction; and the connection between the first pipe pile and the second pipe pile can withstand the force perpendicular to the axial direction, and strengthen the bending resistance of the pipe pile; in addition, the reinforcing plate is arranged outside the first thickened portion and the second thickened portion, avoiding the problem of welding penetration or shallow welding during the welding of the reinforcing plate on the outer wall surface of the skirt board, resulting in broken piles or the reinforcing plate cannot be firmly connected, ensuring the connection reliability of the reinforcing plate, and then strengthening the connection stability of the second pipe pile and the first pipe pile.

[0039] Through the above arrangement, the reinforcing plate 40 axially connects the first skirt plate 13 and the second skirt plate 43, which not only avoids the deviation of the first pipe pile and the second pipe pile, and ensures the stability of the force transmission of the pipe pile in the axial direction; and the connection of the pipe pile can withstand the force perpendicular to the axial direction, and strengthens the bending resistance of the pipe pile. In addition, the arrangement of the first thickened part and the second thickened part provides connection conditions for welding the reinforcing plate, avoiding the problem of broken piles or failure of the reinforcing plate to be firmly connected due to welding penetration or shallow welding at the welding position, ensuring the connection reliability of the reinforcing plate, and further strengthening the connection stability of the second pipe pile and the first pipe pile; and the welders weld the reinforcing plate on the first thickened part and the second thickened part, which is simple and convenient to weld, and the construction speed is faster, saving construction time, thereby reducing construction costs.

[0040] In some embodiments, Figure 4 As shown, the first skirt plate 13 surrounds the outer surface of the side wall of the first joint 12, and a plurality of first thickened portions 132 are provided and are evenly spaced along the circumferential direction. Specifically, the first skirt plate 13 surrounds the outer surface of the side wall of the first joint 12, and is a hollow cylindrical structure. The structure of the first skirt plate effectively prevents the slurry from leaking out of the gap at the end of the mold during the prefabrication of the pipe pile and prevents the mold from getting stuck during the demoulding process, which helps to ensure the structural integrity of the first pipe pile. A plurality of first thickened portions 132 are provided, and there is a distance between two adjacent first thickened portions 132, and the distance between each two adjacent first thickened portions is the same. This arrangement, on the one hand, prevents the first skirt plate from being subjected to stress at the gathering position, thereby improving the structural stability of the first skirt plate; on the other hand, it helps to ensure the structural stability of the first pipe pile matched with the inner wall of the first skirt plate.

[0041] The second skirt plate 43 is arranged in the same manner as the first skirt plate 13. The second skirt plate surrounds the outer surface of the side wall of the second joint. A plurality of second thickened portions are arranged and are evenly spaced along the circumferential direction. It can be understood that the structure of the second skirt plate may not be completely the same as that of the first skirt plate. For example, the cross-section of the second thickened portion 432 is arc-shaped, and the cross-section of the first thickened portion 132 is triangular.

[0042] In some embodiments, Figure 4 As shown, the pipe pile assembly also includes a first connector 60, which is arranged in the cavity surrounded by the first skirt board 13 and connects the two first thickened parts 132. Specifically, the first skirt board 13 is in the shape of a hollow cylinder, and the first connector 60 is connected in the cavity in the middle of the first skirt board, and the two ends of the first connector 60 are respectively connected to the two first thickened parts 132. The first connector 60 can be connected to the two thickened parts 132 by welding. The first connector can apply a force to the skirt board in the direction close to the first pipe pile, so as to prevent the first skirt board from deforming in the direction away from the first pipe pile, thereby ensuring the integrity of the pipe pile end, thereby ensuring that the force between the pipe piles can be effectively transmitted; in addition, the first connector is arranged in the thickened part, which ensures the firmness of the welding of the first connector.

[0043] Optional, such as Figure 3 As shown, the first connecting member 60 is arranged on the end of the first skirt board 13 away from the first end plate 20. One end of the first skirt board 13 is connected to the first end plate 20, and the structural integrity of the first skirt board at this end is relatively strong; while at the end of the first skirt board 13 away from the first end plate 20, there are fewer constraints and it is easy to warp and deform outward. By arranging the first connecting member at the end of the first skirt board away from the first end plate, it helps to improve the structural stability of the first skirt board, ensure the integrity of the pipe pile end, and further ensure that the force between the pipe piles can be effectively transmitted.

[0044] The pipe pile assembly further includes a second connecting member 70, which is disposed in the cavity surrounded by the second skirt plate 43 and connects the two second thickened portions 432. The second connecting member 70 may be disposed in the same manner as the first connecting member 60, and will not be described in detail herein.

[0045] In some embodiments, Figure 4 As shown, the first skirt board 13 is an axisymmetric structure, and the first thickened portion 132 has multiple groups, each group is two first thickened portions 132 symmetrical with respect to the axis of the first skirt board 13. Specifically, the first skirt board 13 is an axisymmetric structure, and the first thickened portions have multiple groups and are symmetrically arranged along the axis of the first skirt board, and the two symmetrical thickened portions are recorded as a group, for example, Figure 4It is shown that there are four groups of first thickened parts, and it is understandable that the first thickened parts can also be arranged in one group, two groups, or other number groups. The symmetrical arrangement of the first thickened parts not only strengthens the structural stability of the first skirt plate, but also provides conditions for the symmetrical arrangement of the first connecting member and the first reinforcing plate, which helps to improve the structural stability of the first pile end.

[0046] In some embodiments, Figure 4 As shown, the same first connecting member connects the two first thickened portions of the same group. Specifically, the two ends of the same first connecting member 60 are respectively connected to the two first thickened portions 132 of the same group. There can be multiple first connecting members 60. Figure 4 It is shown that there are four first connectors. It is understandable that a corresponding number of first connectors can be provided according to the number of groups of the first thickened portions. The two ends of the first connector are connected to the two thickened portions of the same group to ensure that the first connector symmetrically pulls the first skirt board, avoids the skirt board from twisting and deforming due to unbalanced force, and further ensures the force stability of the first skirt board and the stability of the structure.

[0047] In some embodiments, reference Figure 4 As shown, the second skirt plate 43 can be arranged in the same manner as the first skirt plate 13. The second skirt plate 43 is an axisymmetric structure, and the second thickened portion 432 has multiple groups, each group of which is two second thickened portions 432 symmetrical with respect to the axis of the second skirt plate. The symmetrical arrangement of the second thickened portions not only strengthens the structural stability of the second skirt plate, but also provides conditions for the symmetrical arrangement of the second connecting member and the second reinforcing plate, which helps to improve the structural stability of the second pile end.

[0048] In some embodiments, reference Figure 4 As shown, the second connecting member 70 can be connected in the same manner as the first connecting member 60. The same second connecting member 70 connects the two second thickened portions 432 of the same group. The two ends of the second connecting member are connected to the two thickened portions of the same group to ensure that the second connecting member symmetrically pulls the second skirt board, avoids the skirt board from being twisted and deformed due to unbalanced force, and further ensures the force stability of the second skirt board and the stability of the structure.

[0049] In some embodiments, Figure 4As shown, the inner surface of the first skirt board 13 is wavy, and the inner surface of the first thickened portion 132 is a smooth curved surface. Specifically, the inner surface of the first skirt board 13 is wavy, showing convex and concave undulations. Among them, the part protruding into the interior of the pipe pile is the first thickened portion 132, and the inner surface of the first thickened portion 132 is a smooth curved surface. On the one hand, such a setting helps to prevent stress concentration when the first skirt board is subjected to force, resulting in local cracking or instability causing structural damage, and helps to improve the structural stability of the first skirt board; on the other hand, the structure of the first joint on the inner side of the first skirt board matches the structure of the first skirt board, and the wavy structure helps the first joint to be completely seamlessly filled with the pipe pile slurry and the inner wall surface of the first skirt board during the prefabrication process, avoiding the appearance of gaps at the connection of different thicknesses of the first skirt board, helping to improve the molding quality of the first pipe pile and further improve the structural stability of the first pipe pile.

[0050] The shape of the second skirt board 43 may be the same as that of the first skirt board, that is, the inner surface of the second skirt board 43 is wavy, and the inner surface of the second thickened portion 432 is a smooth curved surface, which will not be described in detail here.

[0051] In some embodiments, Figure 3 As shown, the outer diameter of the first plate body 131 is the same as the outer diameter of the second plate body 431. Specifically, the outer diameter of the first plate body 131 is the same as the outer diameter of the second plate body 431, which ensures that the outer wall surfaces of the first plate body 131 and the second plate body 431 are flush, and because the inner wall surface of the reinforcing plate 50 is connected to the outer wall surfaces of the first plate body 131 and the second plate body 431, it is ensured that the inner wall surface of the reinforcing plate is a smooth surface and can be smoothly connected to the outer wall surfaces of the first plate body and the second plate body, ensuring that the stiffening plate can be conveniently and reliably connected to the first plate body and the second plate body.

[0052] In some embodiments, Figure 3 As shown, the outer diameter of the first plate portion 131 is the same as the outer diameter of the first body 11 , and the outer diameter of the second plate portion 431 is the same as the outer diameter of the second body 41 . Specifically, the outer diameter of the first plate body 131 is the same as the outer diameter of the first body 11, that is, the outer wall surface of the first plate body 131 is flush with the outer wall surface of the first body 11, which ensures the flatness of the outer wall surface of the first pipe pile and the first connector, and ensures the effectiveness of force transmission of the first pipe pile; the outer diameter of the second plate body 431 is the same as the outer diameter of the second body 41, that is, the outer wall surface of the second plate body 431 is flush with the outer wall surface of the second body 41, which ensures the flatness of the outer wall surface of the second pipe pile and the second connector, and ensures the effectiveness of force transmission of the second pipe pile; in addition, since the outer diameters of the first plate body 131 and the second plate body 431 are the same, it is ensured that after the first pipe pile and the second pipe pile are connected, the first body part, the first plate body part, the second body part, and the second plate body part are all flushly connected, which ensures the continuous stability of force transmission of the two sections of the pipe piles in the axial direction after the connection, and helps to strengthen the bearing capacity of the first pipe pile and the second pipe pile.

[0053] In order to more clearly understand the structure of the pipe pile assembly of the present invention, the process of connecting the first pipe pile and the second pipe pile is now exemplified. It can be understood that the process of connecting the pipe piles is only used to explain the structure of the pipe pile assembly of the present invention and does not limit the technical features in any way.

[0054] The connection process of the first pipe pile and the second pipe pile is as follows:

[0055] S1: Produce the first skirt panel 13 and the second skirt panel 43.

[0056] Specifically, the factory produces a first skirt board and a second skirt board, wherein the first skirt board includes a first plate body and a first thickened portion protruding inwardly from the first plate body; a first connecting piece is arranged in the cavity surrounded by the first skirt board to connect the two first thickened portions. The second skirt board includes a second plate body and a second thickened portion protruding inwardly from the second plate body; a second connecting piece is arranged in the cavity surrounded by the second skirt board to connect the two second thickened portions.

[0057] S2: Prefabricate the first pipe pile and the second pipe pile.

[0058] Specifically, the first pipe pile is prepared by a first pipe pile mold, the first pipe pile mold is a hollow cylinder, and the first skirt plate is circumferentially arranged on the inner surface of the end of the first pipe pile mold; the pipe pile slurry is filled in the mold, the slurry is filled to the inner wall surface of the mold and the inner wall surface of the first skirt plate, and the mold is centrifuged around the axis to obtain a first pipe pile with a hollow structure, and after the slurry is formed, the pipe pile is cured and demoulded to obtain the first pipe pile, and the first end plate is connected to the end of the first pipe pile. The prefabrication steps of the second pipe pile can be the same as the prefabrication process of the first pipe pile, and the second end plate is connected to the end of the second pipe pile.

[0059] S3: sinking the first pipe pile and connecting the first pipe pile with the second pipe pile.

[0060] Specifically, the first pipe pile is driven vertically into the ground, and the first end plate at the top is reserved to be connected with the second pipe pile. The second end plate at the bottom of the second pipe pile is close to the first end plate, and the second pipe pile is rotated to align and connect the second thickened part with the first thickened part, and then the piles are welded. The welding pile connection includes two steps. The first step is to weld the second end plate to the first end plate along the circumferential direction of the pipe pile; the second step is to weld the reinforcing plate outside the first thickened part and the second thickened part to fix the first skirt plate and the second skirt plate.

[0061] S4: Sinking of the second pipe pile.

[0062] Specifically, after the weld is cooled, anti-corrosion treatment is performed and the sinking of the second pipe pile is continued.

[0063] The pipe pile assembly provided by the embodiment of the present invention axially connects the first skirt plate and the second skirt plate through a reinforcing plate, which not only avoids the deviation of the first pipe pile and the second pipe pile, and ensures the stability of the force transmission of the pipe pile in the axial direction; but also the connection of the pipe pile can withstand the force perpendicular to the axial direction, and strengthens the bending resistance of the pipe pile. In addition, the setting of the first thickened part and the second thickened part provides connection conditions for welding the reinforcing plate, avoiding the problem of welding through and causing broken piles or shallow welding and causing the reinforcing plate to be unable to be firmly connected during the welding of the reinforcing plate on the outer wall of the skirt plate, ensuring the connection reliability of the reinforcing plate, and further strengthening the connection stability of the second pipe pile and the first pipe pile; by welding the reinforcing plate on the first thickened part and the second thickened part, the welding is simpler, the construction speed is faster, and the construction time is saved, thereby reducing the construction cost.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A pipe pile assembly, characterized in that: include: A first pipe pile, comprising a first body and a first joint connected to one end of the first body, wherein the outer surface of the side wall of the first joint is provided with a first skirt plate along the circumferential direction, wherein the first skirt plate comprises a first plate body portion and a first thickened portion protruding inwardly from the first plate body portion; A first end plate, arranged at the other end of the first joint, wherein the end surface of the first end plate is perpendicular to the axis of the first pipe pile and is fixedly connected to the first skirt plate; A second pipe pile, comprising a second body and a second joint connected to one end of the second body, a second skirt plate is circumferentially arranged on the outer surface of the side wall of the second joint, and the second skirt plate comprises a second plate body and a second thickened portion protruding inwardly from the second plate body; A second end plate is arranged at the other end of the second joint, the end surface of the second end plate is perpendicular to the axis of the second pipe pile and is fixedly connected to the second skirt plate; the second end plate is fixedly connected to the first end plate and the second thickened portion overlaps with the first thickened portion in the circumferential direction; A reinforcing plate is disposed outside the first thickened portion and the second thickened portion, and the reinforcing plate is fixedly connected to the first skirt board and the second skirt board.

2. The pipe pile assembly according to claim 1, characterized in that: The first skirt plate surrounds the outer surface of the side wall of the first joint, and a plurality of first thickened portions are provided and are evenly spaced along the circumferential direction; The second skirt plate surrounds the outer surface of the side wall of the second joint, and a plurality of second thickened portions are provided and are evenly spaced along the circumferential direction.

3. The pipe pile assembly according to claim 2, characterized in that: Also includes: A first connecting member, disposed in the cavity surrounded by the first skirt plate, connecting the two first thickened portions; The second connecting member is arranged in the cavity surrounded by the second skirt board and connects the two second thickened parts.

4. The pipe pile assembly according to claim 3, characterized in that: The first skirt plate is an axisymmetric structure, and the first thickened portions have a plurality of groups, each group comprising two first thickened portions that are symmetrical with respect to the axis of the first skirt plate.

5. The pipe pile assembly according to claim 4, characterized in that: The same first connecting member connects two first thickened portions in the same group. 6 . The pipe pile assembly according to claim 3 , wherein the second skirt plate is an axisymmetric structure, and the second thickened portions have a plurality of groups, each group comprising two second thickened portions that are symmetrical with respect to the axis of the second skirt plate.

7. The pipe pile assembly according to claim 6, characterized in that: The same second connecting member connects two second thickened portions in the same group.

8. The pipe pile assembly according to claim 2, characterized in that: The outer diameter of the first plate body is the same as the outer diameter of the second plate body.

9. The pipe pile assembly according to claim 8, characterized in that: The outer diameter of the first plate portion is the same as the outer diameter of the first body, and the outer diameter of the second plate portion is the same as the outer diameter of the second body.

10. The pipe pile assembly according to claim 1, characterized in that: The inner surfaces of the first skirt plate and the second skirt plate are wavy, and the inner surfaces of the first thickened portion and the second thickened portion are smooth curved surfaces.

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