PRC pipe pile for supporting deep foundation pit

Abstract

The utility model relates to the technical field of supporting pipe piles, and discloses a PRC pipe pile for deep foundation pit supporting, which comprises a pipe pile body, the upper end of the pipe pile body is fixedly connected with a first flange plate, and the lower end of the pipe pile body is connected with a protective connecting assembly. Every two adjacent pipe pile bodies are connected through the corresponding first flange plate and the corresponding protective connecting assembly between the two adjacent pipe pile bodies. The protective connecting assembly comprises an adjusting piece movably connected to the lower end of the pipe pile body in a sleeving mode, and a second flange plate is movably connected into the adjusting piece in a sleeving mode. Due to the arrangement of the connecting holes, the second flange plate and the first flange plate can be fixedly connected through the connecting piece under the cooperation of the adjusting piece and the second flange plate, and then the effect of fixedly connecting the two adjacent pipe pile bodies for splicing is achieved; and due to the arrangement of the adjusting piece, the multiple connecting pieces can be driven to rotate at the same time through the transmission teeth, so that the multiple connecting pieces are screwed into the corresponding connecting holes rapidly at the same time, and the construction efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of supporting pipe piles, and more specifically, to a PRC pipe pile for supporting a deep foundation pit. Background Art

[0002] In the development and construction of high-rise buildings, super high-rise buildings and underground spaces, deep foundation pit excavation is an indispensable construction step; mixed reinforced prestressed concrete pipe piles (PRC pipe piles) are a new type of prestressed concrete pipe piles produced by reasonable reinforcement method and adjustment of concrete formula, which greatly improves the ductility and horizontal bearing capacity of the pile body.

[0003] Due to practical limitations, the length of processed PRC pipe piles is often limited. The support of deep foundation pits usually requires the splicing of at least two pipe piles to achieve support. The most common splicing method is welding. However, since the weld is in the foundation pit, it is inevitably corroded, which affects the support strength. In addition, the space in the foundation pit is limited, and the welding construction efficiency is slow, resulting in a long time for welding work, which can easily cause fatigue to the workers, thereby increasing safety hazards. Therefore, it needs to be improved. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a PRC pipe pile for deep foundation pit support.

[0005] To achieve the above object, the utility model provides the following technical solution: a PRC pipe pile for deep foundation pit support, comprising a pipe pile body, the upper end of the pipe pile body is fixedly connected with a first flange, the lower end of the pipe pile body is connected with a protective connection assembly, and two adjacent pipe pile bodies are connected through the first flange and the protective connection assembly between each other;

[0006] The protective connection assembly includes an adjusting member movably sleeved on the lower end of the pipe pile body, a second flange is movably sleeved inside the adjusting member, the second flange is fixedly sleeved on the lower end of the pipe pile body, a plurality of evenly distributed connecting members are installed inside the second flange, and a protective member is movably connected to the outside of the adjusting member;

[0007] The first flange is provided with a plurality of evenly distributed connection holes, the upper ends of the inner walls of the connection holes are provided with chamfers, and the connection pieces correspond to the connection holes one by one and are connected to each other.

[0008] As a preferred technical solution of the utility model, the adjusting member includes an adjusting sleeve rotatably sleeved on the lower end of the pipe pile body, the upper end of the inner wall of the adjusting sleeve is provided with transmission teeth located on the top of the second flange, and the lower end of the outer surface of the adjusting sleeve is provided with an adjusting groove.

[0009] As a preferred technical solution of the utility model, the connecting part includes a positioning shaft movably sleeved inside the second flange, the upper end of the positioning shaft extends to the top of the second flange and is fixedly connected to a transmission gear, and the lower end of the positioning shaft extends to the bottom of the second flange and is fixedly connected to a connecting screw.

[0010] As a preferred technical solution of the utility model, the outer diameters of the connecting screw and the transmission gear are both larger than the diameter of the positioning shaft, the outer surface of the transmission gear is meshed with the transmission teeth, and the connecting screw is threadedly sleeved in the connecting hole.

[0011] As a preferred technical solution of the utility model, the protective member includes a protective sleeve that is movably sleeved on the outside of the adjustment sleeve, the protective sleeve is connected to the adjustment sleeve through an adjustment groove, the internal movably sleeve of the protective sleeve is connected to a protective airbag that is fixedly connected to the bottom of the adjustment sleeve, and the inner side of the protective airbag is in contact with the outer surface of the pile body.

[0012] As a preferred technical solution of the utility model, the protective sleeve is a hollow structure, the inner diameter of the middle part of the inner side of the protective sleeve is larger than the inner diameters of the upper and lower ends, and the inner surface of the protective sleeve is smooth.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. Due to the setting of the connecting hole, the utility model can realize the fixed connection between the second flange and the first flange through the connecting member under the cooperation of the adjusting member and the second flange, thereby achieving the effect of fixedly connecting two adjacent pipe pile bodies for splicing; and due to the setting of the adjusting member, multiple connecting members can be driven to rotate at the same time through the transmission teeth, so that multiple connecting members can be quickly screwed into the corresponding connecting holes at the same time, greatly improving the construction efficiency.

[0015] 2. Due to the setting of the protective part, the utility model can make the protective sleeve rotate and move upward at the same time with the cooperation of the adjustment groove. Due to the limitation of the adjustment sleeve, the protective sleeve can squeeze the protective airbag to expand its inner wall inward when moving upward until its inner wall is sealed and fitted with the pipe pile body, thereby achieving the effect of protecting the connecting seam. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the bottom of the utility model;

[0018] Figure 3 It is a cross-sectional view of the front side of the utility model;

[0019] Figure 4 for Figure 3 A partial schematic diagram of the middle adjustment sleeve;

[0020] Figure 5 for Figure 4 A local enlarged schematic diagram of point A in the middle.

[0021] In the figure: 1. pile body; 2. first flange; 3. protective connection assembly; 31. adjusting member; 311. adjusting sleeve; 312. transmission teeth; 313. adjusting groove; 32. second flange; 33. connecting member; 331. positioning shaft; 332. connecting screw; 333. transmission gear; 34. protective member; 341. protective sleeve; 342. protective airbag. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figures 1 to 5 As shown, the utility model provides a PRC pipe pile for deep foundation pit support, comprising a pipe pile body 1, the upper end of the pipe pile body 1 is fixedly connected with a first flange 2, the lower end of the pipe pile body 1 is connected with a protective connection assembly 3, and two adjacent pipe pile bodies 1 are connected through the first flange 2 and the protective connection assembly 3 between each other;

[0024] The protective connection assembly 3 includes an adjusting member 31 movably sleeved on the lower end of the pipe pile body 1, a second flange 32 is movably sleeved inside the adjusting member 31, the second flange 32 is fixedly sleeved on the lower end of the pipe pile body 1, a plurality of evenly distributed connecting members 33 are installed inside the second flange 32, and a protective member 34 is movably connected to the outside of the adjusting member 31;

[0025] A plurality of evenly distributed connecting holes are provided in the first flange 2, and the upper ends of the inner walls of the connecting holes are provided with chamfers. The connecting pieces 33 correspond to the connecting holes one by one and are connected to each other. Due to the provision of the connecting holes, with the cooperation of the adjusting piece 31 and the second flange 32, the second flange 32 can be fixedly connected to the first flange 2 through the connecting piece 33, thereby achieving the effect of fixedly connecting two adjacent pipe pile bodies 1 for splicing.

[0026] Among them, the adjusting member 31 includes an adjusting sleeve 311 rotatably sleeved on the lower end of the pipe pile body 1, and the upper end of the inner wall of the adjusting sleeve 311 is provided with a transmission tooth 312 located on the top of the second flange 32, and the lower end of the outer surface of the adjusting sleeve 311 is provided with an adjusting groove 313; due to the setting of the adjusting member 31, the transmission tooth 312 can simultaneously drive multiple connecting members 33 to rotate, so that the multiple connecting members 33 can be quickly screwed into the corresponding connecting holes at the same time, which greatly improves the construction efficiency.

[0027] Among them, the connecting member 33 includes a positioning shaft 331 movably sleeved inside the second flange 32, the upper end of the positioning shaft 331 extends to the top of the second flange 32 and is fixedly connected to a transmission gear 333, and the lower end of the positioning shaft 331 extends to the bottom of the second flange 32 and is fixedly connected to a connecting screw 332; due to the setting of the transmission gear 333, with the cooperation of the transmission teeth 312, when the adjustment sleeve 311 rotates, it can drive several connecting screws 332 to rotate at the same time, thereby helping to improve construction efficiency.

[0028] The outer diameters of the connecting screw 332 and the transmission gear 333 are both larger than the diameter of the positioning shaft 331 , the outer surface of the transmission gear 333 is meshed with the transmission teeth 312 , and the connecting screw 332 is threadedly sleeved in the connecting hole.

[0029] Among them, the protective member 34 includes a protective sleeve 341 movably sleeved on the outside of the adjustment sleeve 311, the protective sleeve 341 is connected to the adjustment sleeve 311 through the adjustment groove 313, and the internal movably sleeved protective airbag 342 fixedly connected to the bottom of the adjustment sleeve 311 is connected to the protective sleeve 341, and the inner side of the protective airbag 342 is in contact with the outer surface of the pile body 1; due to the setting of the protective member 34, the protective sleeve 341 can be rotated and moved upward with the cooperation of the adjustment groove 313, and due to the limitation of the adjustment sleeve 311, the protective sleeve 341 can squeeze the protective airbag 342 when moving upward to make its inner wall expand inward until its inner wall is sealed and in contact with the pile body 1, thereby achieving the effect of protecting the connecting seam.

[0030] Among them, the protective sleeve 341 is a hollow structure, the inner diameter of the middle part of the inner side of the protective sleeve 341 is larger than the inner diameter of the upper and lower ends, and the inner surface of the protective sleeve 341 is smooth; due to the setting of the protective airbag 342, it can not only achieve a sealed socket connection with the pipe pile body 1, but also assist the protective connection component 3 to make the first flange 2 slide into the protective connection component 3 quickly and accurately, so as to ensure that the first flange 2 is aligned with the second flange 32.

[0031] The working principle and use process of this utility model:

[0032] The two piles can be spliced ​​by connecting the protective connection assembly 3 at the lower end of an upper PRC pile to the first flange 2 at the top of a lower PRC pile;

[0033] First, the protective connection assembly 3 is mounted on the first flange 2 through the pile body 1, and the second flange 32 is aligned with the first flange 2 with the cooperation of the protective member 34, and then the pile body 1 is slowly rotated to rotate the second flange 32 at the bottom relative to the first flange 2 below, until the connecting screw 332 slides into the hole on the first flange 2; then the adjusting sleeve 311 is rotated to drive the plurality of transmission gears 333 to rotate synchronously through the transmission teeth 312, and the rotation of the plurality of transmission gears 333 can drive the connecting screw 332 to rotate through the corresponding positioning shaft 331, and then the plurality of connecting screws 332 can be simultaneously screwed into the corresponding holes on the first flange 2 with the cooperation of gravity, and the connection between the protective connection assembly 3 and the first flange 2 is completed; then the protective sleeve 341 is rotated to move upward with the cooperation of the adjusting groove 313, and then due to the restriction of the adjusting sleeve 311, the protective sleeve 341 squeezes the protective airbag 342 and expands it inward until its inner wall is sealed and sleeved with the pile body 1.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PRC pipe pile for deep foundation pit support, comprising a pipe pile body (1), characterized in that: The upper end of the pipe pile body (1) is fixedly connected to a first flange (2), the lower end of the pipe pile body (1) is connected to a protective connection assembly (3), and two adjacent pipe pile bodies (1) are connected via the first flange (2) and the protective connection assembly (3) between them; The protective connection assembly (3) comprises an adjusting member (31) movably sleeved on the lower end of the pipe pile body (1), a second flange (32) movably sleeved inside the adjusting member (31), the second flange (32) is fixedly sleeved on the lower end of the pipe pile body (1), a plurality of evenly distributed connecting members (33) are installed inside the second flange (32), and a protective member (34) is movably connected to the outside of the adjusting member (31); The first flange (2) is provided with a plurality of evenly distributed connection holes, the upper ends of the inner walls of the connection holes are provided with chamfers, and the connection pieces (33) correspond to the connection holes one by one and are connected to each other.

2. A PRC pipe pile for deep foundation pit support according to claim 1, characterized in that: The adjusting member (31) comprises an adjusting sleeve (311) rotatably sleeved on the lower end of the pipe pile body (1); the upper end of the inner wall of the adjusting sleeve (311) is provided with a driving tooth (312) located at the top of the second flange (32); and the lower end of the outer surface of the adjusting sleeve (311) is provided with an adjusting groove (313).

3. A PRC pipe pile for deep foundation pit support according to claim 1, characterized in that: The connecting member (33) includes a positioning shaft (331) movably sleeved inside the second flange (32), the upper end of the positioning shaft (331) extends to the top of the second flange (32) and is fixedly connected to a transmission gear (333), and the lower end of the positioning shaft (331) extends to the bottom of the second flange (32) and is fixedly connected to a connecting screw (332).

4. A PRC pipe pile for deep foundation pit support according to claim 3, characterized in that: The outer diameters of the connecting screw (332) and the transmission gear (333) are both larger than the diameter of the positioning shaft (331); the outer surface of the transmission gear (333) meshes with the transmission teeth (312); and the connecting screw (332) is threadedly sleeved in the connecting hole.

5. A PRC pipe pile for deep foundation pit support according to claim 2, characterized in that: The protective member (34) comprises a protective sleeve (341) movably sleeved on the outside of the adjusting sleeve (311); the protective sleeve (341) is connected to the adjusting sleeve (311) via an adjusting groove (313); the protective sleeve (341) is movably sleeved inside with a protective airbag (342) fixedly connected to the bottom of the adjusting sleeve (311); the inner side of the protective airbag (342) is in contact with the outer surface of the pipe pile body (1).

6. A PRC pipe pile for deep foundation pit support according to claim 5, characterized in that: The protective sleeve (341) is a hollow structure, the inner diameter of the middle portion of the inner side of the protective sleeve (341) is larger than the inner diameters of the upper and lower ends, and the inner surface of the protective sleeve (341) is smooth.

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