Prestressed concrete pipe pile structure

Abstract

The utility model relates to the field of prestressed concrete pipe piles, and discloses a prestressed concrete pipe pile structure which comprises six stress steel bars, transverse bars are fixed between every two opposite stress steel bars through steel wire winding, and tubular concrete is poured on the outer surfaces of the six stress steel bars and the outer surfaces of the transverse bars. The outer surface of the concrete is movably connected with a jacking mechanism making contact with the ground. The top supporting mechanism comprises a mounting pipe, a supporting ring, six reinforcing ribs, three positioning blocks and a ground supporting assembly. According to the prestressed concrete pipe pile structure, after the prestressed concrete pipe pile is installed, the outer surface of concrete is integrally sleeved with the top supporting mechanism, then the bearing platform is poured, the formwork for pouring is removed after solidification, the joint of the concrete and the bearing platform is further reinforced through the top supporting mechanism, and under adjustment of the ground supporting assembly, the bearing platform can be supported by the top supporting mechanism; the structural support between the bearing platform and the ground can be increased, so that the structural stability is further enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of prestressed concrete pipe piles, in particular to a prestressed concrete pipe pile structure. Background Art

[0002] Prestressed concrete pipe piles are a type of structural pile used in foundation engineering. They are prestressed during the production process to increase their bearing capacity and bending strength. This is usually done by applying tension to anchors fixed at both ends to create tension in the steel bars or strands and transfer it to the concrete. They are often used in foundation engineering for buildings such as bridges, docks, ports and buildings to provide reliable support and stability.

[0003] The advantages of prestressed concrete pipe piles include higher bearing capacity, smaller deflection and better durability. For example, Chinese patent CN214883612U discloses a prestressed concrete pipe pile. The utility model relates to the technical field of prestressed concrete pipe piles. Through the three annular grooves on the left and right sides of the pile body, the friction can be increased by embedding the steel rope in the annular grooves when the pile body is transported and hoisted, which can effectively prevent the steel rope position from sliding and deviating during the pile body hoisting, thereby causing the pile body to tilt seriously. Because the outer periphery of the protrusion is formed in a cone shape, the steel rope position can also be effectively prevented from shifting during the transportation and hoisting process, thereby ensuring the safety of the pile body transportation and hoisting.

[0004] However, there are still some shortcomings. The top of the pile in this scheme is divided into a traditional structure. The top part of the prestressed pile is connected to the pedestal by adopting pre-embedded reinforcement bars. The connection strength between the prestressed pile and the pedestal is improved by pouring. This strength is a fixed index and cannot be further strengthened according to demand. In order to further optimize and improve the structural stability during the connection process, a prestressed concrete pipe pile structure is proposed to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a prestressed concrete pipe pile structure, which has the advantage of being able to further enhance the structural stability and solves the problem that the connection strength between the prestressed pile and the cap cannot be further enhanced.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a prestressed concrete pipe pile structure, comprising six stress steel bars, a plurality of transverse bars are fixed between two opposite stress steel bars by winding steel wires, the outer surfaces of the six stress steel bars and the transverse bars are poured with tubular concrete, and the outer surface of the concrete is movably connected with a supporting mechanism in contact with the ground;

[0007] The roof support mechanism includes a mounting tube, a support ring, six reinforcing ribs, three positioning blocks and a ground support assembly. The mounting tube is movably connected to the outer surface of the concrete, the support ring is fixed to the outer surface of the mounting tube, the six reinforcing ribs are all fixed to the outer surface of the mounting tube, the three positioning blocks are all fixed to the outer surface of the mounting tube, and the ground support assembly is movably connected to the bottom of the three positioning blocks.

[0008] By adopting this technical solution, the connection between the concrete and the pedestal can be further reinforced through the top support mechanism, and the structural support between the pedestal and the ground can be increased by adjusting the ground support assembly, making the structure more stable.

[0009] Furthermore, the tops of the six stress steel bars are cast inside the cap, and the tops of the six stress steel bars can be bent according to the height of the cap.

[0010] By adopting this technical solution, when the height of the pedestal is less than 900 mm, the length of the top of the stress steel bars can be shortened by bending six stress steel bars, and the contact area and pulling structure between the structures can be further increased by the bent stress steel bars, thereby increasing the stability of the connection.

[0011] Furthermore, the cross section of the concrete is in a circular ring shape, and the three contacting transverse reinforcements are stacked in sequence and fixed to each other by winding with steel wires.

[0012] By adopting this technical solution, multiple transverse reinforcements can penetrate into the deep layer of concrete, and the strength of the structure can be strengthened by multiple groups of three transverse reinforcements fixed to each other.

[0013] Furthermore, a plurality of positioning holes are formed on the outer surface of the installation tube, and the positioning holes are inclined downward. A plurality of positioning bolts are fixed on the outer surface of the installation tube and respectively penetrate the plurality of positioning holes, and the positioning bolts are fixed to the concrete.

[0014] By adopting this technical solution, the installation pipe can be fixed to the concrete by means of positioning bolts, and the structural stability of the connection between the concrete and the base can be further enhanced by cooperating with the support ring.

[0015] Furthermore, a plurality of reinforcement holes are opened on the top of the support ring, and a plurality of fixing bolts are fixed on the top of the support ring and respectively penetrate through the plurality of reinforcement holes, and the fixing bolts are fixed to the base.

[0016] By adopting this technical solution, the support ring can be fixed to the base by fixing bolts, and the structural stability of the connection between the base and the concrete can be further enhanced by cooperating with the installation pipe.

[0017] Furthermore, the ground support assembly includes three threaded rods, three rotating sleeves, three hollow tubes, a supporting bottom sleeve and three limit plates. The three threaded rods are respectively rotatably connected to the bottom of the three positioning blocks, the three rotating sleeves are respectively fixed on the outer surfaces of the three threaded rods, and the three hollow tubes are respectively threadedly connected to the outer surfaces of the three threaded rods.

[0018] By adopting this technical solution, the three threaded rods can be driven to rotate by the rotation of the three rotating sleeves, and the threaded rods can gradually slide out of the hollow tube through the thread engagement force, so that the support ring contacts the base, which is convenient for adjustment.

[0019] Furthermore, a limiting plate located inside the hollow tube is fixed to the bottom of the threaded rod, and the limiting plate has a circular cross-section and a diameter larger than the aperture of the top opening of the hollow tube.

[0020] By adopting this technical solution, the limiting plate can limit the sliding range of the threaded rod, thereby preventing the threaded rod from completely sliding out of the hollow tube.

[0021] Furthermore, the support bottom sleeve is fixed on the bottom of the three hollow tubes and sleeved on the outer surface of the concrete, and the support bottom sleeve is in contact with the ground.

[0022] By adopting this technical solution, the threaded rod is gradually slid out of the hollow tube through the thread engagement force, so that the supporting bottom sleeve contacts the ground, thereby increasing the upward supporting force.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0024] The prestressed concrete pipe pile structure, after the prestressed concrete pipe piles are installed, the top support mechanism is integrally sleeved on the outer surface of the concrete and the pedestal is cast. After solidification, the casting template is removed, and the connection between the concrete and the pedestal is further reinforced by the top support mechanism. Under the adjustment of the ground support assembly, the structural support between the pedestal and the ground can be increased, so that the structural stability is further enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the planar structure of the utility model;

[0026] Figure 2 It is a three-dimensional diagram of the transverse reinforcement and stress reinforcement of the utility model;

[0027] Figure 3 It is a three-dimensional diagram of the transverse reinforcement and the stress reinforcement in a bent state of the utility model;

[0028] Figure 4 It is a schematic diagram of the planar structure of the top supporting mechanism of the utility model;

[0029] Figure 5 It is a schematic diagram of the planar structure of the ground support assembly of the utility model;

[0030] Figure 6 It is a three-dimensional diagram of the rotating sleeve of the utility model.

[0031] In the figure: 1. stress reinforcement; 2. transverse reinforcement; 3. concrete; 4. top support mechanism; 401. mounting pipe; 402. support ring; 403. reinforcing rib; 404. positioning block; 405. ground support assembly; 4051. threaded rod; 4052. rotating sleeve; 4053. hollow tube; 4054. support bottom sleeve; 4055. limit plate; 406. positioning bolt; 407. fixing bolt. DETAILED DESCRIPTION

[0032] 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.

[0033] See also Figure 1-3 A prestressed concrete pipe pile structure in this embodiment includes stress steel bars 1. The number of stress steel bars 1 is six. It should be noted that the tops of the six stress steel bars 1 are cast inside the cap. The tops of the six stress steel bars 1 can be bent according to the height of the cap. When the height of the cap is less than 900 mm, the length of the top of the stress steel bars 1 can be shortened by bending the six stress steel bars 1, and the contact area and the pulling structure between the structures can be further increased by the bent stress steel bars 1, thereby increasing the stability of the connection.

[0034] In addition, a plurality of transverse bars 2 are fixed between two opposing stress steel bars 1 by winding steel wires, and tubular concrete 3 is poured on the outer surfaces of the six stress steel bars 1 and the transverse bars 2. It should be noted that the cross-section of the concrete 3 is annular, and the three contacting transverse bars 2 are stacked in sequence and fixed to each other by winding steel wires, so that the plurality of transverse bars 2 penetrate into the deep layer of the concrete 3. The strength between the structures can be strengthened by multiple groups of three transverse bars 2 fixed to each other, and the outer surface of the concrete 3 is movably connected with a supporting mechanism 4 in contact with the ground.

[0035] During operation, by adopting this technical solution, the connection between the concrete 3 and the pedestal can be further reinforced by the top support mechanism 4, and the structural support between the pedestal and the ground can be increased by adjusting the ground support assembly 405, making the structure more stable.

[0036] See also Figure 4-6In order to further enhance the structural stability, the top support mechanism 4 in this embodiment includes a mounting tube 401, a support ring 402, six reinforcing ribs 403, three positioning blocks 404 and a ground support assembly 405. The mounting tube 401 is movably connected to the outer surface of the concrete 3. It should be noted that a plurality of positioning holes are provided on the outer surface of the mounting tube 401, and the positioning holes are inclined downward. A plurality of positioning bolts 406 are fixed on the outer surface of the mounting tube 401 and respectively penetrate the plurality of positioning holes. The positioning bolts 406 are fixed to the concrete 3, and the mounting tube 401 can be fixed to the concrete 3 by the positioning bolts 406. By cooperating with the support ring 402, the structural stability of the connection between the concrete 3 and the base is further enhanced.

[0037] In addition, the support ring 402 is fixed on the outer surface of the mounting tube 401. It should be noted that a plurality of reinforcement holes are opened on the top of the support ring 402, and a plurality of fixing bolts 407 are fixed on the top of the support ring 402 and respectively penetrate the plurality of reinforcement holes. The fixing bolts 407 are fixed to the base, and the support ring 402 and the base can be fixed by the fixing bolts 407. By cooperating with the mounting tube 401, the structural stability of the connection between the base and the concrete 3 is further enhanced.

[0038] Furthermore, six reinforcing ribs 403 are fixed on the outer surface of the mounting tube 401, and the reinforcing ribs 403 are triangular in shape. The triangle has stability and can further increase the structural strength between the mounting tube 401 and the support ring 402. Three positioning blocks 404 are fixed on the outer surface of the mounting tube 401, and the ground support assembly 405 is movably connected to the bottom of the three positioning blocks 404. It should be noted that the ground support assembly 405 includes three threaded rods 4051, three rotating sleeves 4052, three hollow tubes 4053, and a support bottom sleeve 4054. 054 and three limit plates 4055, three threaded rods 4051 are rotatably connected to the bottoms of the three positioning blocks 404, three rotating sleeves 4052 are respectively fixed to the outer surfaces of the three threaded rods 4051, and three hollow tubes 4053 are respectively threadedly connected to the outer surfaces of the three threaded rods 4051. The three threaded rods 4051 can be driven to rotate by the rotation of the three rotating sleeves 4052, and the threaded rods 4051 can be gradually slid out of the hollow tubes 4053 through the thread meshing force, so that the support ring 402 contacts the base, which is easy to adjust.

[0039] It should also be noted that a limit plate 4055 located inside the hollow tube 4053 is fixed to the bottom of the threaded rod 4051. The cross-section of the limit plate 4055 is circular and its diameter is larger than the aperture of the top opening of the hollow tube 4053. The limit plate 4055 can limit the sliding range of the threaded rod 4051 to prevent the threaded rod 4051 from completely sliding out of the hollow tube 4053.

[0040] It should be further explained that the support bottom sleeve 4054 is fixed to the bottom of the three hollow tubes 4053 and is sleeved on the outer surface of the concrete 3. The support bottom sleeve 4054 is in contact with the ground. The threaded rod 4051 is gradually slid out of the hollow tube 4053 through the threaded engagement force, so that the support bottom sleeve 4054 is in contact with the ground, increasing the upward supporting force.

[0041] In general, the rotating sleeve 4052 drives the three threaded rods 4051 to rotate, and the threaded rods 4051 slide out of the hollow tube 4053 through the thread engagement force, the support ring 402 moves upward to contact the base, and the support bottom sleeve 4054 contacts the ground to increase the upward supporting force, and the connection between the concrete 3 and the base is reinforced and fixed by multiple positioning bolts 406 and multiple fixing bolts 407, thereby enhancing the structural stability of the connection between the base and the concrete 3.

[0042] The working principle of the above embodiment is:

[0043] After the prestressed concrete pipe piles are installed, the supporting mechanism 4 is integrally sleeved on the outer surface of the concrete 3, and then the pedestal is poured. After the pouring is completed, the pouring template is removed, and the three rotating sleeves 4052 are rotated synchronously to drive the three threaded rods 4051 to rotate. The threaded meshing force generated causes the threaded rods 4051 to gradually slide out of the hollow tube 4053, so that the support ring 402 moves upward to contact the pedestal, and the support bottom sleeve 4054 moves downward to contact the ground, thereby increasing the upward supporting force. A plurality of positioning bolts 406 are respectively inserted into the corresponding positioning holes and driven into the concrete 3, and the installation pipe 401 is fixed to the concrete 3, and a plurality of fixing bolts 407 are respectively inserted into the corresponding reinforcement holes to fix the support ring 402 to the pedestal. By cooperating with the installation pipe 401, the structural stability of the connection between the pedestal and the concrete 3 is further strengthened.

Claims

1. A prestressed concrete pipe pile structure, comprising six stress steel bars (1), characterized in that: A plurality of transverse bars (2) are fixed between two opposing stress steel bars (1) by winding steel wires, and the outer surfaces of the six stress steel bars (1) and the transverse bars (2) are poured with tubular concrete (3), and the outer surface of the concrete (3) is movably connected to a top supporting mechanism (4) in contact with the ground; The roof support mechanism (4) comprises a mounting tube (401), a support ring (402), six reinforcing ribs (403), three positioning blocks (404) and a ground support assembly (405); the mounting tube (401) is movably connected to the outer surface of the concrete (3); the support ring (402) is fixed to the outer surface of the mounting tube (401); the six reinforcing ribs (403) are all fixed to the outer surface of the mounting tube (401); the three positioning blocks (404) are all fixed to the outer surface of the mounting tube (401); and the ground support assembly (405) is movably connected to the bottom of the three positioning blocks (404).

2. A prestressed concrete pipe pile structure according to claim 1, characterized in that: The tops of the six stress steel bars (1) are cast inside the cap, and the tops of the six stress steel bars (1) can be bent according to the height of the cap.

3. The prestressed concrete pipe pile structure according to claim 1, characterized in that: The cross section of the concrete (3) is in the shape of a circular ring, and the three contacting transverse reinforcements (2) are stacked in sequence and are fixed to each other by winding with steel wires.

4. The prestressed concrete pipe pile structure according to claim 1, characterized in that: The outer surface of the mounting tube (401) is provided with a plurality of positioning holes, the positioning holes being inclined downward, and the outer surface of the mounting tube (401) is fixed with a plurality of positioning bolts (406) respectively penetrating the plurality of positioning holes, the positioning bolts (406) being fixed to the concrete (3).

5. The prestressed concrete pipe pile structure according to claim 1, characterized in that: A plurality of reinforcement holes are opened on the top of the support ring (402), and a plurality of fixing bolts (407) are fixed on the top of the support ring (402) and respectively penetrate through the plurality of reinforcement holes, and the fixing bolts (407) are fixed to the base.

6. The prestressed concrete pipe pile structure according to claim 1, characterized in that: The ground support assembly (405) comprises three threaded rods (4051), three rotating sleeves (4052), three hollow tubes (4053), a supporting bottom sleeve (4054) and three limiting plates (4055), the three threaded rods (4051) are respectively rotatably connected to the bottoms of the three positioning blocks (404), the three rotating sleeves (4052) are respectively fixed to the outer surfaces of the three threaded rods (4051), and the three hollow tubes (4053) are respectively threadedly connected to the outer surfaces of the three threaded rods (4051).

7. The prestressed concrete pipe pile structure according to claim 6, characterized in that: A limiting plate (4055) located inside the hollow tube (4053) is fixed to the bottom of the threaded rod (4051); the limiting plate (4055) has a circular cross-section and a diameter greater than the aperture of the top opening of the hollow tube (4053).

8. The prestressed concrete pipe pile structure according to claim 6, characterized in that: The support bottom sleeve (4054) is fixed to the bottom of the three hollow tubes (4053) and is sleeved on the outer surface of the concrete (3), and the support bottom sleeve (4054) is in contact with the ground.

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