High-strength prestressed concrete pipe pile

Abstract

The utility model relates to the technical field of bridge foundations, in particular to a high-strength prestressed concrete pipe pile which comprises a mechanical connector, the mechanical connector is fixedly connected with a segmented pipe pile, a polygonal inner groove is formed in a pipe opening of the segmented pipe pile, the mechanical connector comprises a pressure-bearing ring and a bending-bearing rod, and the pressure-bearing ring is fixedly connected with the bending-bearing rod. The two sides of the pressure-bearing ring are fixedly connected with the bending-bearing rods, the shape and the size of the bending-bearing rods are matched with the shape and the size of the polygonal inner grooves, the bending-bearing rods can be inserted into the polygonal inner grooves, and the adjacent segmented pipe piles are spliced and connected in a butt joint mode by arranging the mechanical connecting joints. The utility model has the advantages that the problem that the joint cannot bear the bending moment is solved, the problem that the welding joint is possibly damaged in the connecting and driving process is avoided, and the bridge pipe pile can be randomly segmented; connection is more reliable, site construction is more convenient, connection quality is more controllable, and the bearing performance of the prestressed concrete pipe pile is effectively guaranteed.

Description

Technical Field

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

[0002] Prestressed concrete pipe piles are prefabricated in factories and constructed using mechanized methods, which accelerates construction progress and saves on project investment. In the field of railway bridges, large-diameter prestressed concrete pipe piles are increasingly being used in bridge pile foundations. In actual use, prestressed concrete bridge pipe pile foundations often have long pile lengths. The pipe pile products are transported to the site in sections, which are then connected by welding the end plates, resulting in multiple sections of the pipe pile being connected end to end.

[0003] Pipe piles are used in railway bridge pile foundations. Due to the deep burial depth of the pile foundation, they need to be segmented and then connected by welding. The welded joints are difficult to withstand bending moments, and the last pile section is relatively long, making transportation difficult. At the same time, the on-site welding time of the welded joints is long, and the weld quality is difficult to inspect. The welded joints may be damaged during the pile driving process. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by providing a high-strength prestressed concrete pipe pile. By designing a mechanical connection joint capable of withstanding bending moments, the long length of the last pipe pile section is effectively solved. At the same time, the mechanical connection has high strength, avoiding the potential damage that may occur during the driving process of welded joints.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A high-strength prestressed concrete pipe pile includes several segmented pipe piles, which are assembled together. The pipe pile is characterized by a mechanical connection joint fixedly connected to each segmented pipe pile. The pipe opening of each segmented pipe pile is a polygonal inner groove. The mechanical connection joint includes a pressure-bearing ring and a bending-bearing rod. The bending-bearing rod is fixedly connected to both sides of the pressure-bearing ring. The shape and size of the bending-bearing rod are compatible with the shape and size of the polygonal inner groove and can be inserted into it. Adjacent segmented pipe piles are assembled and connected by the mechanical connection joint.

[0007] The segmented pipe pile and the mechanical connection joint form an anchoring connection.

[0008] The segmented pipe pile has bolt holes on the side wall at the location of the polygonal inner trench, and the bending rod of the mechanical connection joint has reserved bolt holes. The reserved bolt holes correspond to the bolt holes and are fixedly connected by anchor bolts.

[0009] The anchor bolt consists of an anchor bolt cap and an anchor bolt shank, which are fixed together. The shank of the anchor bolt has external threads arranged around its periphery.

[0010] Each side of the polygonal inner groove is provided with a bolt hole, and the bending rod is provided with a reserved bolt hole that corresponds to each bolt hole.

[0011] The bolt holes are countersunk.

[0012] The advantages of this utility model are: it solves the problem that the joint cannot withstand bending moment, avoids the problem of possible damage during the construction of the welded joint connection, and realizes arbitrary segmentation of bridge pipe piles; the connection is more reliable, on-site construction is more convenient, the connection quality is more controllable, and the bearing capacity of prestressed concrete pipe piles is effectively guaranteed. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the segmented pipe pile in this utility model;

[0015] Figure 3 This is a schematic diagram of the mechanical connection joint in this utility model;

[0016] Figure 4 This is a schematic diagram of the anchor bolt in this utility model;

[0017] Figure 5 This is a schematic diagram of the segmented pipe pile connection in this utility model. Detailed Implementation

[0018] The features and other related features of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate the understanding of those skilled in the art:

[0019] like Figure 1-5 As shown in the figure, the labels represent: segmented pipe pile 1, mechanical connection joint 2, anchor bolt 3; segmented bolt hole 11, polygonal inner groove 12; bearing ring 21, bending rod 22, bending rod bolt hole 23; anchor bolt cap 31, anchor bolt rod 32, external thread 33.

[0020] Example: Figures 1 to 5 As shown, in this embodiment, high-strength prestressed concrete pipe piles are used to assemble and connect the segmented pipe piles 1 to extend the segmented pipe piles 1, thereby ensuring that the length of the concrete pipe piles meets the design requirements.

[0021] Specifically, such as Figure 1As shown, in this embodiment, the segmented pipe pile 1 has segmented bolt holes 11 at both ends, which are used for fixed connection with the mechanical connection joint 2. The inner diameter of both ends of the segmented pipe pile 1 is provided with polygonal inner grooves 12.

[0022] In this embodiment, the polygonal inner groove 12 adopts an octagonal structure, but in actual use, polygonal inner grooves with different numbers of sides can also be selected according to the actual situation. Segmented bolt holes 11 are provided on each side of the polygonal inner groove 12 to improve the connection performance between the segmented pipe pile 1 and the mechanical connection joint 2.

[0023] like Figure 2 As shown, the mechanical connection joint 2 consists of a pressure-bearing ring 21 and a bending rod 22, wherein the bending rod 22 is fixedly connected to both sides of the pressure-bearing ring 21. The shape and size of the outer wall of the bending rod 22 are matched with the shape and size of the polygonal inner groove 12, allowing the bending rod 22 to be inserted into the polygonal inner groove 12. A bending rod bolt hole 23 is provided on the bending rod 22, which matches the section bolt hole 11, and the two can be aligned and anchored by the anchor bolt 3.

[0024] In this embodiment, the bending support rod 22 is an octagon that matches the octagonal inner groove, and bending support rod bolt holes 23 are provided on each side of the octagon.

[0025] Anchor bolt 3 is formed by anchor bolt cap 31 and anchor bolt shank 32, with the anchor bolt shank 32 covered with external threads 33. After the segmented pipe pile 1 and mechanical connection joint 2 are connected to the bending rod 22 through the matching polygonal inner groove 12, the anchor bolt shank 32 of anchor bolt 3 is inserted into the bolt hole 11 of segmented pipe pile and the bolt hole 23 of bending rod and fixed by external threads 33.

[0026] At this point, the bearing ring 21 transmits axial force through compression with the cross-section of the segmented pipe pile 1, and the bending moment is transmitted by the bending rod 22, which is fixed to the segmented pipe pile 1 through the anchor bolts 3. Compared with traditional welding connections, the connection is more reliable, on-site construction is more convenient, and the connection quality is more controllable, effectively ensuring the bearing capacity of the prestressed concrete pipe pile.

[0027] In this embodiment, the segment bolt holes 11 and the bending rod bolt holes 23 can be arranged in multiple rows along the segmented pipe pile 1 and the bending rod 22, respectively, to further improve the connection performance between the segmented pipe pile 1 and the bending rod 22.

[0028] Although the above embodiments have described the concept and embodiments of the present invention in detail with reference to the accompanying drawings, those skilled in the art will recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, and therefore will not be elaborated here.

Claims

1. A high-strength prestressed concrete pipe pile, comprising a plurality of segmented pipe piles, wherein the plurality of segmented pipe piles are assembled together, characterized in that: The system includes a mechanical connection joint, which is fixedly connected to the segmented pipe pile. The pipe opening of the segmented pipe pile is a polygonal inner groove. The mechanical connection joint includes a pressure-bearing ring and a bending-bearing rod. The bending-bearing rod is fixedly connected to both sides of the pressure-bearing ring. The shape and size of the bending-bearing rod are compatible with the shape and size of the polygonal inner groove and can be inserted into the polygonal inner groove. Adjacent segmented pipe piles are assembled and connected by the mechanical connection joint.

2. The high-strength prestressed concrete pipe pile according to claim 1, characterized in that: The segmented pipe pile and the mechanical connection joint form an anchoring connection.

3. A high-strength prestressed concrete pipe pile according to claim 2, characterized in that: The segmented pipe pile has bolt holes on the side wall at the location of the polygonal inner trench, and the bending rod of the mechanical connection joint has reserved bolt holes. The reserved bolt holes correspond to the bolt holes and are fixedly connected by anchor bolts.

4. A high-strength prestressed concrete pipe pile according to claim 3, characterized in that: The anchor bolt consists of an anchor bolt cap and an anchor bolt shank, which are fixed together. The shank of the anchor bolt has external threads arranged around its periphery.

5. A high-strength prestressed concrete pipe pile according to claim 3, characterized in that: Each side of the polygonal inner groove is provided with a bolt hole, and the bending rod is provided with a reserved bolt hole that corresponds to each bolt hole.

6. A high-strength prestressed concrete pipe pile according to claim 3, characterized in that: The bolt holes are countersunk.

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