A high-strength, deformation-resistant prestressed pipe pile
By introducing a combined structure of shell, thickened layer, reinforcing ribs, buffer pad and absorbent pad into the prestressed pipe pile, the problem of delayed response or plastic deformation of the prestressed pipe pile under high-speed impact is solved, the deformation resistance and impact resistance are improved, the service life is extended and the maintenance cost is reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MESKA GRP CONSTR
- Filing Date
- 2025-06-12
- Publication Date
- 2026-06-30
AI Technical Summary
Existing prestressed concrete pipe piles are prone to failure under high-speed impact due to response lag or plastic deformation, and cannot effectively absorb impact energy, resulting in poor deformation resistance and impact resistance, shortening service life and increasing maintenance costs.
The structure employs a combination of an outer shell, a thickened layer, reinforcing ribs, a buffer pad, and an absorbent pad. The outer shell bears and disperses the impact force, the thickened layer further disperses and bears the impact force, the buffer pad and absorbent pad absorb some of the energy, and the support ring and buffer spring disperse the remaining force, ensuring the integrity and stability of the pipe pile.
It achieves high strength, deformation resistance, and impact resistance, extends the service life of prestressed pipe piles, and reduces maintenance costs.
Smart Images
Figure CN224431419U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of prestressed pipe pile technology, specifically a high-strength, deformation-resistant prestressed pipe pile. Background Technology
[0002] Prestressed concrete pipe piles, or PTC piles for short, are foundation components in civil engineering. They are created by applying prestress to concrete to improve the crack resistance and bearing capacity of the pile. As an important material for building foundations, they support buildings and prevent them from collapsing. However, after existing prestressed concrete pipe piles are installed inside buildings, the stress on different parts of the piles often varies due to the varying terrain. When the stress on one side of the prestressed concrete pipe pile is too great, it can easily damage the pile's strength, causing it to crack and break.
[0003] To overcome the aforementioned defects, existing technology (Chinese patent application number: 202323488359.1, application date: December 21, 2023) discloses a high-strength prestressed pipe pile, including a prestressed pipe pile body. An anti-collapse metal sleeve is fitted onto the outer sidewall of the prestressed pipe pile body. Metal blocks are installed at both the front and rear ends of the prestressed pipe pile body via fastening bolts. The anti-collapse metal sleeve is located between two metal blocks, and its outer wall is flush with the outer wall of the metal blocks. By adding multiple reinforcing devices equidistantly to the outer sides of the two pipe pile metal end plates, and by fitting the anti-collapse metal sleeve onto the outer side of the prestressed pipe pile, the prestress can be adjusted on the outer side of the pipe pile by adjusting the multiple anti-collapse reinforcing devices. This allows the multiple adjusted anti-collapse reinforcing devices to form a maximum tensile stress on the outer side of the prestressed pipe pile. However, under the action of the anti-collapse reinforcing devices, the dimensional changes of the entire pipe pile system remain within a certain range, thereby preventing the pipe pile from cracking during stress.
[0004] Although existing technologies for preventing pipe pile collapse rely on the prestressing device to induce elastic deformation, this mechanism is primarily designed for static or quasi-static loads. In the face of high-speed impacts (such as those from construction machinery), the prestressing device may fail due to response lag or plastic deformation, thus failing to effectively absorb impact energy. Consequently, the high-strength deformation resistance and impact resistance of the pipe pile are not satisfactory, reducing the service life of the prestressed pipe pile and increasing maintenance costs.
[0005] Therefore, we proposed a high-strength, deformation-resistant prestressed pipe pile that can effectively solve the above problems. Utility Model Content
[0006] The purpose of this invention is to provide a high-strength, deformation-resistant prestressed concrete pipe pile to solve the problem mentioned in the background art. Currently, when using prestressed concrete pipe piles, the reinforcing device forms elastic deformation through prestress adjustment. However, this mechanism is mainly for static or quasi-static loads. For high-speed impacts (such as impacts from construction machinery), the prestressing device may fail due to response lag or plastic deformation, and cannot effectively absorb impact energy. As a result, the high-strength deformation resistance and impact resistance of the prestressed concrete pipe pile are not good, which reduces the service life of the prestressed concrete pipe pile and increases maintenance costs.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-strength, deformation-resistant prestressed pipe pile, comprising a pipe pile body, an installation ring plate fixedly installed on the outer wall of the bottom of the pipe pile body, a pile seat movably connected to the outer wall of the bottom of the pipe pile body, and the pile seat located at the bottom of the installation ring plate; a plurality of insertion holes are opened on the upper surface of the pile seat, each insertion hole is provided with a prestressed steel bar, and the top end of the prestressed steel bar penetrates through the installation ring plate; the pipe pile body includes an outer shell, a thickened layer is fixedly connected to the inner wall of the outer shell, a reinforcing rib is sleeved on the outer wall of the thickened layer, a bottom ring plate is fixedly installed on the inner walls of the upper and lower sides of the thickened layer, and a support assembly for deformation resistance is provided inside the bottom ring plate, the support assembly including a support rod.
[0008] As a preferred technical solution of this application, the pile base has an installation groove inside, a base plate is fixedly installed at the bottom of the pile base, and a pile cone is fixedly connected to the bottom of the base plate.
[0009] As a preferred technical solution of this application, a plurality of support rings are fixedly installed on the outer wall of the support rod, an absorbent pad is fixedly connected to the inner wall of each support ring, six sets of buffer springs are fixedly installed on the outer wall of the support ring, a buffer pad is fixedly connected to the end of each set of buffer springs, a support plate is fixedly connected to the outer wall of the buffer pad, and the outer wall of the support plate is attached to the inner wall of the thickened layer.
[0010] As a preferred technical solution of this application, the pipe pile body and the installation groove are movably connected, and the installation groove and the insertion hole are integrated with the pile seat. By inserting the bottom of the pipe pile body into the installation groove of the pile seat, the vertical alignment of the pile body is ensured, and the installation error is reduced. The size of the installation groove matches the outer diameter of the pipe pile body. The tight fit increases the friction force and prevents the pile body from sliding or being damaged.
[0011] As a preferred technical solution of this application, the thickened layer and the reinforcing rib are connected by winding, and the thickened layer is made of carbon fiber reinforced composite material. The reinforcing rib is set as steel strand, and the steel strand is wound around the outer wall of the thickened layer to enhance the axial and circumferential bearing capacity of the pipe pile.
[0012] As a preferred technical solution of this application, the support ring and the absorbent pad are tightly fitted together, and the support ring is made of steel and the absorbent pad is made of nitrile rubber. The support ring, made of steel, provides stable ring support, thereby the support ring transmits force to the absorbent pad made of nitrile rubber, which has excellent elasticity and damping performance, effectively absorbs impact energy, and reduces the damage of vibration to the pipe pile.
[0013] As a preferred technical solution of this application, the buffer spring is fixedly connected to the support ring and the buffer pad, and the buffer spring is made of spring steel, while the buffer pad is made of silicone material. By making the buffer spring of spring steel, it has high elasticity and fatigue resistance, and can withstand multiple impacts without failure. The buffer spring also transmits the dispersed force to the support ring.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This high-strength, deformation-resistant prestressed concrete pipe pile, by setting an outer shell, thickened layer, reinforcing ribs, buffer pad, and absorbent pad, facilitates the achievement of high strength, deformation resistance, and impact resistance of the prestressed concrete pipe pile, extends its service life, and reduces maintenance costs. Furthermore, the setting of installation groove, prestressed steel bars, insertion holes, and pile cone facilitates further deformation resistance and excellent load-bearing performance of the prestressed concrete pipe pile. Specific details are as follows:
[0015] 1. The system incorporates an outer shell, a thickened layer, reinforcing ribs, a buffer pad, and an absorbent pad. The outer shell absorbs and disperses part of the impact force, while the thickened layer further disperses and absorbs the impact force, reducing stress concentration in the outer shell. The reinforcing ribs enhance the axial and circumferential bearing capacity of the pipe pile. The buffer pad initially absorbs some of the impact energy, reducing the force transmitted to the inside of the pipe pile. The absorbent pad disperses the remaining force throughout the overall structure of the pipe pile, ensuring its integrity and stability. This system achieves high strength, deformation resistance, and impact resistance in the prestressed pipe pile, extending its service life and reducing maintenance costs.
[0016] 2. An installation groove, prestressed steel bars, insertion holes, and pile cones are provided. The pipe pile body is inserted into the installation groove to prevent relative sliding or damage to the pile body. The prestressed steel bars are inserted into the insertion holes, which tightly compress the pipe pile body and the pile seat to form an integral structure, improving the pile body's pull-out and shear resistance and preventing damage under horizontal loads. In conjunction with the pile seat, the load is distributed to a larger soil area through the base plate. The pile cones further guide the load into the soil layer, achieving further resistance to deformation and excellent bearing performance of the prestressed pipe pile. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0018] Figure 2 This is a partial cross-sectional structural diagram of the pile base and pile cone of this utility model;
[0019] Figure 3 This is a partial cross-sectional structural diagram of the pipe pile body of this utility model;
[0020] Figure 4 This is a partial top view of the bottom ring plate, support rod, and support ring of this utility model;
[0021] Figure 5 For practical purposes Figure 3 Enlarged structural diagram at point A in the middle;
[0022] Figure 6 This is a front view sectional structural diagram of the pipe pile body, pile base, and pile cone of this utility model.
[0023] In the diagram: 1. Pipe pile body; 2. Mounting ring plate; 3. Pile base; 4. Base plate; 5. Pile cone; 6. Mounting groove; 7. Insertion hole; 8. Outer shell; 9. Thickened layer; 10. Reinforcing rib; 11. Bottom ring plate; 12. Support rod; 13. Support ring; 14. Absorbing pad; 15. Buffer spring; 16. Buffer pad; 17. Support plate. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figures 1-6 The present invention provides the following technical solution:
[0026] Example 1: To address the issue that in commercially available prestressed concrete pipe piles, the reinforcing device achieves elastic deformation through prestressing adjustment. However, this mechanism is primarily designed for static or quasi-static loads. For high-speed impacts (such as those from construction machinery), the prestressing device may fail due to response lag or plastic deformation, failing to effectively absorb impact energy. Consequently, the high-strength deformation resistance and impact resistance of the prestressed concrete pipe pile are poor, reducing its service life and increasing maintenance costs. This example discloses a high-strength deformation-resistant prestressed concrete pipe pile, with the following technical details, which can be found in the appendix. Figure 1 and attached Figure 3 - Appendix Figure 6The pipe pile body 1 includes an outer shell 8, a thickened layer 9 fixedly connected to the inner wall of the outer shell 8, a reinforcing rib 10 sleeved on the outer wall of the thickened layer 9, and a bottom ring plate 11 fixedly installed on the inner walls of the upper and lower sides of the thickened layer 9. The bottom ring plate 11 has a support assembly for resisting deformation, including a support rod 12. A support assembly for resisting deformation is provided, including a support rod 12; the thickened layer 9 and the reinforcing rib 10 are connected by a winding, and the thickened layer 9 is made of carbon fiber reinforced composite material, and the reinforcing rib 10 is made of steel strand; the support ring 13 and the absorbent pad 14 are tightly fitted, and the support ring 13 is made of steel material, and the absorbent pad 14 is made of nitrile rubber material; the buffer spring 15 is fixedly connected to both the support ring 13 and the buffer pad 16, and the buffer spring 15 is made of spring steel, and the buffer pad 16 is made of silicone material.
[0027] When the pipe pile body 1 is impacted, the external force first acts on the outer shell 8. The outer shell 8, as the outermost concrete protective structure of the pipe pile, provides basic mechanical support, bearing and dispersing part of the impact force. The inner wall of the outer shell 8 is connected to a thickened layer 9 made of carbon fiber reinforced composite material, which has high strength, lightweight, and corrosion resistance, significantly improving the bending and compressive strength of the pipe pile, thereby further dispersing and bearing the impact force and reducing stress concentration in the outer shell 8. In conjunction with the reinforcing ribs 10 with steel strands wound around the outer wall of the thickened layer 9, the axial and circumferential bearing capacity of the pipe pile is enhanced. The external force is transferred to the support plate 17 through the thickened layer 9 and the reinforcing ribs 10. The support plate 17, as an intermediate load-bearing component, transfers the force to the buffer pad 16. The buffer pad 16 is made of silicone material, which has good elasticity and energy absorption capacity. This initially absorbs some of the impact energy, reducing the force transmitted to the inside of the pipe pile. The remaining load is further dispersed by the elastic deformation of the buffer spring 15. The buffer spring 15 is made of spring steel, which has high elasticity and fatigue resistance, and can withstand multiple impacts without failure. The buffer spring 15 transmits the dispersed force to the support ring 13, which is made of steel and provides stable ring support. The support ring 13 then transmits the force to the absorption pad 14 made of nitrile rubber, which has excellent elasticity and damping performance, effectively absorbing the impact energy and reducing the damage of vibration to the pipe pile. The absorption pad 14 disperses the remaining force to the overall structure of the pipe pile, ensuring the integrity and stability of the pipe pile. This achieves high strength, deformation resistance, and impact resistance in the prestressed pipe pile, extends the service life of the prestressed pipe pile, and reduces maintenance costs.
[0028] Example 2: This example discloses the following technical content regarding a high-strength, deformation-resistant prestressed concrete pipe pile, which facilitates further deformation resistance and excellent bearing capacity of the prestressed concrete pipe pile. Please refer to the attached document. Figure 1 - Appendix Figure 2 and attached Figure 6 The system includes a pipe pile body 1, an installation ring plate 2 fixedly installed on the outer wall of the bottom of the pipe pile body 1, a pile seat 3 movably connected to the outer wall of the bottom of the pipe pile body 1, and the pile seat 3 is located at the bottom of the installation ring plate 2; a number of insertion holes 7 are opened on the upper surface of the pile seat 3, each insertion hole 7 is provided with a pre-stressed steel bar, and the top of the pre-stressed steel bar passes through the installation ring plate 2; an installation groove 6 is opened inside the pile seat 3, a base plate 4 is fixedly installed at the bottom of the pile seat 3, and a pile cone 5 is fixedly connected to the bottom of the base plate 4; the pipe pile body 1 and the installation groove 6 are movably connected, and the installation groove 6 and the insertion holes 7 are integrated with the pile seat 3.
[0029] The bottom of the pipe pile body 1 is inserted into the installation groove 6 of the pile seat 3 to ensure vertical alignment of the pile body and reduce installation errors. The size of the installation groove 6 matches the outer diameter of the pipe pile body 1. The tight fit increases friction and prevents relative sliding or damage to the pile body. The prestressed steel bars pass through the installation ring plate 2 and are inserted into the insertion hole 7 of the pile seat 3. By tensioning the prestressed steel bars, pre-compression stress is generated, which makes the pipe pile body 1 and the pile seat 3 tightly squeezed to form an integral structure. This improves the pull-out and shear resistance of the pile body and prevents damage under horizontal loads. The load of the superstructure is transferred to the pile seat 3 through the pipe pile body 1. The pile seat 3 distributes the load to a larger soil area through the bottom plate 4, reducing the stress per unit area. The pile cone 5 further guides the load into the soil layer, improving the bearing capacity of the pile body. This achieves further resistance to deformation and excellent bearing performance of the prestressed pipe pile.
[0030] The contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A high-strength, deformation-resistant prestressed pipe pile, comprising a pipe pile body (1), wherein an installation ring plate (2) is fixedly installed on the outer wall of the bottom of the pipe pile body (1), and a pile seat (3) is movably connected to the outer wall of the bottom of the pipe pile body (1), and the pile seat (3) is located at the bottom of the installation ring plate (2); characterized in that The upper surface of the pile base (3) is provided with several insertion holes (7), and each insertion hole (7) is provided with a prestressed steel bar, and the top of the prestressed steel bar passes through the mounting ring plate (2). The pipe pile body (1) includes an outer shell (8), the inner wall of the outer shell (8) is fixedly connected to a thickened layer (9), the outer wall of the thickened layer (9) is fitted with reinforcing ribs (10), the inner walls of the upper and lower sides of the thickened layer (9) are fixedly installed with bottom ring plates (11), and the bottom ring plates (11) are provided with a support assembly for resisting deformation, the support assembly including a support rod (12).
2. The high-strength anti-deformation prestressed pipe pile according to claim 1, characterized in that: The pile base (3) has an installation groove (6) inside, and a base plate (4) is fixedly installed at the bottom of the pile base (3). A pile cone (5) is fixedly connected to the bottom of the base plate (4).
3. The high-strength, deformation-resistant prestressed pipe pile according to claim 1, characterized in that: The outer wall of the support rod (12) is fixedly equipped with several support rings (13), and the inner wall of each support ring (13) is fixedly connected with an absorption pad (14). The outer wall of the support ring (13) is fixedly equipped with six sets of buffer springs (15), and the end of each set of buffer springs (15) is fixedly connected with a buffer pad (16). The outer wall of the buffer pad (16) is fixedly connected with a support plate (17), and the outer wall of the support plate (17) is attached to the inner wall of the thickened layer (9).
4. The high-strength and deformation-resistant prestressed pipe pile according to claim 1, characterized in that: The pipe pile body (1) and the installation groove (6) are connected in a movable manner, and the installation groove (6) and the insertion hole (7) are integrated with the pile base (3).
5. The high-strength and deformation-resistant prestressed pipe pile according to claim 1, characterized in that: The thickened layer (9) and the reinforcing rib (10) are connected by a winding, and the thickened layer (9) is made of carbon fiber reinforced composite material, while the reinforcing rib (10) is set as steel strand.
6. The high-strength and deformation-resistant prestressed pipe pile according to claim 3, characterized in that: The support ring (13) and the absorbent pad (14) are tightly fitted together, and the support ring (13) is made of steel, while the absorbent pad (14) is made of nitrile rubber.
7. The high-strength and deformation-resistant prestressed pipe pile according to claim 3, characterized in that: The buffer spring (15) is fixedly connected to the support ring (13) and the buffer pad (16), and the buffer spring (15) is made of spring steel, while the buffer pad (16) is made of silicone material.