Prestressed concrete pipe pile

Abstract

The utility model relates to concrete pipe pile technical field, the utility model provides a prestressed concrete pipe pile, including pipe pile body, still include fixed pipe, shelf, fixed link, installation mechanism and anti -pulling mechanism, fixed pipe is sleeved on pipe pile body, and the middle position of fixed pipe inner wall is fixedly provided with the shelf, and the both sides of fixed pipe's periphery side and located shelf all are provided with a plurality of fixed links, and the one end of fixed link is close to pipe pile body and is provided with the drill bit, and installation mechanism sets up between fixed pipe and fixed link, is used for installing and fixing between fixed pipe and fixed link, and anti -pulling mechanism sets up on the lateral wall of fixed pipe, is used for the spacing between ground and fixed pipe, through above technical scheme, is used for solving the technical problem that a plurality of pipe piles are low in splicing strength in the splicing process in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of concrete pipe pile technology, specifically to a prestressed concrete pipe pile. Background Technology

[0002] Prestressed concrete pipe piles, as a new type of pile foundation component, have been widely used in foundation construction in various fields such as building engineering, transportation engineering, and water conservancy engineering due to their advantages such as high degree of industrialization in production, fast construction efficiency, stable bearing performance, and significant cost-effectiveness. In practical engineering applications, pipe piles need to withstand complex external forces such as vertical loads, horizontal loads, and seismic actions transmitted from the superstructure. Their structural stability, connection reliability, and pull-out resistance directly determine the safety performance and service life of the entire foundation system. However, in practical applications, existing prestressed concrete pipe piles typically employ multi-section splicing when longer pile lengths are required. However, the connection structures of existing pipe piles generally suffer from low connection strength and poor reliability. Currently, the mainstream pipe pile connection methods are end plate welding or flange bolting. Welding connections are highly susceptible to defects such as incomplete welding, weld beads, and slag inclusions, resulting in the strength of the connection being far lower than the strength of the pile body. Under vertical or horizontal loads, the connection is prone to detachment and fracture, affecting the overall load-bearing stability of the pile foundation.

[0003] Furthermore, in certain specialized engineering scenarios, such as slope protection projects and anti-buoyancy engineering for underground parking garages, pipe piles not only need to withstand vertical compressive loads but also certain vertical tensile loads to prevent them from being pulled up by the soil or displaced due to buoyancy. However, the existing structural design of prestressed concrete pipe piles mainly optimizes compressive performance and lacks a dedicated tensile structure design. The friction between the pipe pile and the surrounding soil is its main source of tensile force, and this type of tensile resistance has limited capacity, making it difficult to meet the high tensile requirements of engineering scenarios. When encountering heavy rainfall, rising groundwater levels, or soil settlement, the upward force on the pipe pile increases significantly, easily leading to the pipe pile being pulled out, causing foundation instability, and seriously threatening the safety of the superstructure. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a prestressed concrete pipe pile to solve the technical problem of low splicing strength of multiple pipe piles during the splicing process in the prior art.

[0005] According to one aspect, at least one embodiment of the present invention provides a prestressed concrete pipe pile, including a pipe pile body, a fixing pipe, a shelf, fixing rods, an installation mechanism, and a pull-out resistance mechanism. The fixing pipe is fitted onto the pipe pile body. The shelf is fixedly disposed at the middle position of the inner wall of the fixing pipe. Multiple fixing rods are disposed on the periphery of the fixing pipe and on both sides of the shelf. A drill bit is disposed at one end of the fixing rod near the pipe pile body. The installation mechanism is disposed between the fixing pipe and the fixing rods for installing and fixing the fixing pipe and the fixing rods. The pull-out resistance mechanism is disposed on the side wall of the fixing pipe for limiting the distance between the ground and the fixing pipe. It should also be noted that the fixing rods are arranged inclined toward the shelf.

[0006] Preferably, the installation mechanism includes a mounting base, a positioning ring, and an installation component. Multiple mounting bases are fixedly disposed on the outer wall of the fixing tube and on both sides of the shelf. Each mounting base has a mounting groove on its side wall, and a mounting opening at the bottom of the mounting groove. The fixing rod extends through the mounting opening into the fixing tube. The positioning ring is fixedly disposed on the side wall of the fixing rod, and the positioning ring is adapted to the shape of the mounting groove. The installation component is disposed on the mounting base and is used to fix the fixing rod to the mounting base.

[0007] Furthermore, the mounting assembly includes a threaded groove and an end cap. The threaded groove is provided at one end of the inner wall of the mounting groove away from the fixed tube. The end cap is disposed on one side of the mounting base. A threaded post is fixedly disposed on the end cap, and the threaded post extends into the threaded groove through threaded engagement.

[0008] Furthermore, a first damping spring is fitted onto the fixing rod, with both ends of the first damping spring abutting against the threaded post and the positioning ring, respectively.

[0009] Furthermore, a second damping spring is fitted onto the fixing rod, with both ends of the second damping spring contacting the positioning ring and the side wall of the mounting groove, respectively.

[0010] Based on the above scheme, the anti-pull-out mechanism includes a positioning seat, a check arm, a bolt rod, and a washer. Multiple positioning seats are fixedly installed on the outer wall of the fixed tube. The positioning seats have positioning grooves. The check arm is installed in the positioning grooves. The bolt rod passes through and is rotatably installed on the positioning seats and the check arm. A nut is installed on the bolt rod by thread connection. The washer is fitted on the bolt rod. The two ends of the washer abut against the nut and the side wall of the positioning seat, respectively.

[0011] Based on the above scheme, a support spring is fixedly installed between the side wall of the positioning groove away from the fixed tube and the check arm.

[0012] Based on the above scheme, a slot is formed on the side wall of the end cap.

[0013] The beneficial effects of the embodiments of this utility model are as follows: 1. In this utility model, through the setting of the installation mechanism, after the fixing rod is inserted into the installation port, the rotation of the end cap can drive the threaded column to extend into the threaded groove, thereby squeezing the fixing rod through the threaded column and inserting the drill bit into the pipe pile. At the same time, the installation and fixation between the pipe pile body and the fixing pipe can be achieved through the cooperation of the fixing pipe and the pipe pile body, thereby realizing the installation between the pipe pile bodies and ensuring the splicing strength between the pipe pile bodies. In addition, the fixing rod is arranged at an angle, thereby improving the connection strength and anti-pull ability of the pipe pile body. 2. In this utility model, by setting the first damping spring and the second damping spring, the impact force on the pipe pile body can be transmitted to the first damping spring and the second damping spring through the drill bit and the fixing rod, so that the impact force can be buffered by the first damping spring and the second damping spring, thereby improving the seismic performance of the pipe pile body. 3. In this utility model, by setting up an anti-pull-out mechanism, when the pile body is driven into the ground by a pile driver, the support spring on the anti-pull-out arm is in a contracted state. When the pile body is pulled out, the anti-pull-out arm expands outward under the action of the support spring, thereby preventing the prestressed concrete pile from being pulled out. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0015] Figure 1 This is a structural schematic diagram of a prestressed concrete pipe pile in one embodiment of the present invention; Figure 2 for Figure 1 A cross-sectional structural schematic diagram of the mounting mechanism in the embodiment; Figure 3 for Figure 1 A schematic diagram of the fixed rod structure in the embodiment; Figure 4 for Figure 1 A schematic diagram of the cross-sectional structure of the fixed tube in the embodiment; Figure 5 for Figure 1 The embodiment is shown in the cross-sectional view of the anti-pull-out mechanism.

[0016] In the diagram: 1. Pipe pile body; 2. Fixed pipe; 3. Shelf; 4. Fixed rod; 5. Drill bit; 6. Mounting seat; 7. Mounting groove; 8. Mounting port; 9. Positioning ring; 10. End cap; 11. First damping spring; 12. Second damping spring; 13. Positioning seat; 14. Positioning groove; 15. Check arm; 16. Bolt rod; 17. Nut; 18. Support spring. Detailed Implementation The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0017] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0018] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0020] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] like Figures 1-5 As shown, this invention illustrates a prestressed concrete pipe pile according to one embodiment of the present invention. The pipe pile body 1 includes a fixing pipe 2, a shelf 3, fixing rods 4, an installation mechanism, and a pull-out resistance mechanism. The fixing pipe 2 is fitted onto the pipe pile body 1. A shelf 3 is fixedly installed in the middle of the inner wall of the fixing pipe 2. Multiple fixing rods 4 are installed around the periphery of the fixing pipe 2 and on both sides of the shelf 3. A drill bit 5 is installed at one end of each fixing rod 4 near the pipe pile body 1. The installation mechanism is located between the fixing pipe 2 and the fixing rods 4 for fixing the fixing pipe 2 and the fixing rods 4. The pull-out resistance mechanism is located on the side wall of the fixing pipe 2 for limiting the distance between the ground and the fixing pipe 2. It should also be noted that the fixing rods 4 are arranged at an angle.

[0023] Reference Figures 1-4 The installation mechanism includes a mounting base 6, a positioning ring 9, and an installation component. Multiple mounting bases 6 are fixedly installed on the outer wall of the fixing pipe 2 and on both sides of the shelf 3. The side wall of each mounting base 6 has a mounting groove 7, and the bottom of the mounting groove 7 has an installation opening 8. A fixing rod 4 extends through the installation opening 8 into the fixing pipe 2. A positioning ring 9 is fixedly installed on the side wall of the fixing rod 4, and the positioning ring 9 is adapted to the shape of the mounting groove 7. The installation component is installed on the mounting base 6 to fix the fixing rod 4 to the mounting base 6. The installation component includes a threaded groove and an end cap 10. The inner wall of the mounting groove 7 has a threaded groove at the end away from the fixing pipe 2, and the end cap 10 is located on one side of the mounting base 6. A threaded post is fixedly installed on the end cap 10. The threaded post extends into the threaded groove through threaded engagement. A slot is opened on the side wall of the end cap 10. Specifically, after the fixing rod 4 is inserted into the installation port 8, the threaded post can be driven into the threaded groove by rotating the end cap 10. Thus, the threaded post can squeeze the fixing rod 4 and insert the drill bit 5 into the pipe pile. At the same time, the fixing pipe 2 can be used to fix the pipe pile body 1 and the fixing pipe 2 through the cooperation of the fixing pipe 2 and the pipe pile body 1. This achieves the installation of the pipe pile body 1 and ensures the splicing strength between the pipe pile body 1. Meanwhile, the fixing rod 4 is arranged at an angle, which improves the connection strength and anti-pull ability of the pipe pile body 1.

[0024] Reference Figure 1 and Figure 2 A first damping spring 11 is fitted on the fixing rod 4. The two ends of the first damping spring 11 abut against the threaded column and the positioning ring 9, respectively. A second damping spring 12 is fitted on the fixing rod 4. The two ends of the second damping spring 12 contact the positioning ring 9 and the side wall of the mounting groove 7, respectively. Specifically, the impact force on the pipe pile body 1 can be transmitted to the first damping spring 11 and the second damping spring 12 through the drill bit 5 and the fixing rod 4. Thus, the impact force can be buffered by the first damping spring 11 and the second damping spring 12, thereby improving the seismic performance of the pipe pile body 1.

[0025] Reference Figure 2 and Figure 5 The anti-pull-out mechanism includes a positioning seat 13, a check arm 15, a bolt rod 16, and a washer. Multiple positioning seats 13 are fixedly installed on the outer wall of the fixed pipe 2. Positioning slots 14 are opened on the positioning seats 13. The check arm 15 is set in the positioning slot 14. The bolt rod 16 passes through and is rotatably set on the positioning seat 13 and the check arm 15. A nut 17 is installed on the bolt rod 16 by threaded connection. The washer is fitted on the bolt rod 16. The two ends of the washer abut against the nut 17 and the side wall of the positioning seat 13, respectively. A support spring 18 is fixedly installed between the side wall of the positioning slot 14 away from the fixed pipe 2 and the check arm 15. Specifically, when the pipe pile body 1 is driven into the ground by a pile driver, the support spring 18 on the check arm 15 is in a contracted state. When the pipe pile body 1 is pulled out, the check arm 15 is extended outward under the action of the support spring 18 to prevent the prestressed concrete pipe pile from being pulled out.

[0026] In this embodiment, the operator inserts the pipe pile body 1 into the fixing pipe 2, then inserts the fixing rod 4 into the installation port 8 and the threaded post into the threaded groove. The rotation of the end cap 10 then drives the threaded post into the threaded groove, thereby pressing the fixing rod 4 and inserting the drill bit 5 into the pipe pile. Simultaneously, the cooperation between the fixing pipe 2 and the pipe pile body 1 achieves the installation and fixation between them, ensuring the joint strength of the pipe pile bodies 1. Furthermore, the fixing rod 4 is arranged at an angle, thereby enhancing the connection of the pipe pile body 1. The strength and anti-pulling ability are such that when the operator uses a pile driver to drive the pipe pile body 1 into the ground, the support spring 18 on the check arm 15 is in a contracted state. When the pipe pile body 1 is pulled out, the check arm 15 expands outward under the action of the support spring 18, thereby preventing the prestressed concrete pipe pile from being pulled out. Moreover, the impact force on the pipe pile body 1 can be transmitted to the first damping spring 11 and the second damping spring 12 through the drill bit 5 and the fixing rod 4. Thus, the impact force can be buffered by the first damping spring 11 and the second damping spring 12, thereby improving the seismic performance of the pipe pile body 1.

[0027] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A prestressed concrete pipe pile, comprising a pipe pile body (1), characterized in that, Also includes: A fixing pipe (2) is fitted onto the pipe pile body (1); Shelf (3), the shelf (3) is fixedly installed at the middle position of the inner wall of the fixed tube (2); A number of fixing rods (4) are provided on the periphery of the fixing pipe (2) and on both sides of the shelf (3). A drill bit (5) is provided at one end of the fixing rod (4) near the pipe pile body (1). The installation mechanism is disposed between the fixed pipe (2) and the fixed rod (4) for installing and fixing the fixed pipe (2) and the fixed rod (4); A pull-out resistance mechanism is provided on the side wall of the fixed pipe (2) to limit the distance between the ground and the fixed pipe (2).

2. A prestressed concrete pipe pile according to claim 1, characterized in that, The installation mechanism includes: Mounting base (6), multiple mounting bases (6) are fixedly provided on the outer wall of the fixed tube (2) and on both sides of the shelf (3). The side wall of the mounting base (6) is provided with a mounting groove (7), and the bottom of the mounting groove (7) is provided with a mounting opening (8). The fixing rod (4) extends through the mounting port (8) and into the fixing tube (2); Positioning ring (9), the positioning ring (9) is fixedly provided on the side wall of the fixing rod (4), and the positioning ring (9) is adapted to the shape of the mounting groove (7); The mounting component is disposed on the mounting base (6) for fixing the fixing rod (4) to the mounting base (6).

3. A prestressed concrete pipe pile according to claim 2, characterized in that, The installation components include: The threaded groove is provided at one end of the inner wall of the mounting groove (7) away from the fixed tube (2); End cap (10), the end cap (10) is disposed on one side of the mounting base (6), and a threaded post is fixedly disposed on the end cap (10), the threaded post extending into the threaded groove through threaded engagement.

4. A prestressed concrete pipe pile according to claim 3, characterized in that, A first damping spring (11) is fitted on the fixing rod (4), and the two ends of the first damping spring (11) abut against the threaded column and the positioning ring (9) respectively.

5. A prestressed concrete pipe pile according to claim 4, characterized in that, A second damping spring (12) is fitted on the fixing rod (4), and the two ends of the second damping spring (12) are in contact with the positioning ring (9) and the side wall of the mounting groove (7), respectively.

6. A prestressed concrete pipe pile according to claim 5, characterized in that, The pull-out resistance mechanism includes: Positioning seat (13): Multiple positioning seats (13) are fixedly provided on the outer wall of the fixed tube (2), and positioning grooves (14) are provided on the positioning seats (13). Check arm (15), the check arm (15) is disposed in the positioning groove (14); A bolt rod (16) is inserted through and rotatably mounted on the positioning seat (13) and the check arm (15), and a nut (17) is installed on the bolt rod (16) by means of a threaded connection. A gasket is fitted onto the bolt rod (16), and both ends of the gasket abut against the sidewalls of the nut (17) and the positioning seat (13), respectively.

7. A prestressed concrete pipe pile according to claim 6, characterized in that, A support spring (18) is fixedly provided between the side wall of the positioning groove (14) away from the fixed tube (2) and the check arm (15).

8. A prestressed concrete pipe pile according to claim 7, characterized in that, The end cap (10) has a slot on its side wall.

Images