Prestressed pipe pile double-static-pressure construction device
By designing a dual static pressure construction device for prestressed pipe piles, and using the combined structure of hydraulic cylinders and buffer airbags, the problems of vulnerability and limited applicable soil layers in the prior art are solved, and a higher bearing capacity and a wider applicable soil layer are achieved.
Patent Information
- Application Number
- CN202420593279.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-03-26
AI Technical Summary
The existing double-static pressure pipe pile construction technology is easy to cause damage to pipe piles and is difficult to adapt to the use of multiple soil layers.
A dual static pressure construction device for prestressed pipe piles is designed, including a load-bearing platform, a buffer groove, a buffer pad, an upper and lower cushion airbag, an outer casing, an inner pressure rod and a cross-type closed-end steel pile boot. The combination of a dual static pressure structure is realized through hydraulic cylinders and installation bolts, which enhances the friction resistance on the pile side and the pile end, and is suitable for different soil layers.
It effectively prevents excessive pressure from causing damage to the pipe piles, improves the bearing capacity of single piles, and is suitable for a variety of soil layers, reducing the risk of internal pressure rod bending and pipe pile breakage during static pressure.
Smart Images
Figure CN222614195U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of double static pressure construction of prestressed pipe piles, in particular to a double static pressure construction device for prestressed pipe piles. Background Art
[0002] Double static pressure pipe piles are a new pile driving technology. The pile body material is high-strength prestressed concrete pipe piles. The construction process is normal static pressure in the early stage, and then the double static pressure pile driver is used to apply static pressure at the top and bottom of the pile to press the pipe pile into the soil. Double static pressure pipe piles have the advantages of high pile body strength, strong penetration ability, low cost, and small settlement.
[0003] In the prior art, double static pressure pipe piles overcome the shortcomings of traditional prefabricated piles with low final pressure and difficulty in penetrating hard interlayers, so that the pile end can reach a better pile end bearing layer. However, the double static pressure pipe piles are easily damaged during operation and cannot be adapted to the use of various soil layers. Therefore, a prestressed pipe pile double static pressure construction device is needed. Utility Model Content
[0004] The purpose of the utility model is to design a prestressed pipe pile double static pressure construction device to overcome the above problems existing in the prior art and the shortcomings of the prior art.
[0005] In order to achieve the above purpose, the technical solution of the utility model is:
[0006] A prestressed pipe pile double static pressure construction device comprises a load-bearing platform, a buffer groove is fixedly arranged on the load-bearing platform, a mounting hole is fixedly arranged at the bottom of the buffer groove, a buffer pad is movably mounted on the inner wall of the buffer groove, an upper buffer airbag is fixedly mounted on the top of the buffer pad, and a lower buffer airbag is fixedly mounted on the bottom of the buffer pad.
[0007] Preferably, an outer sleeve is movably mounted on the inner wall of the mounting hole, the bottom of the outer sleeve is movably connected to a prestressed pipe pile body, the interior of the prestressed pipe pile body is fixedly mounted with evenly distributed first reinforcing ribs, the outside of the outer sleeve is fixedly mounted with a correction sleeve, and the inner wall of the correction sleeve is movably mounted with the prestressed pipe pile body.
[0008] Preferably, an inner pressure rod is movably installed inside the outer sleeve, the inner pressure rod is movably installed inside the prestressed pipe pile body, and the inner part of the inner pressure rod is fixedly installed with evenly distributed second reinforcing ribs, the outer peripheral surface of the inner pressure rod is fixedly installed with evenly distributed friction resistance blocks, and the lower end of the inner pressure rod is fixedly installed with a cross-shaped closed steel pile shoe, which is movably installed at the lower end of the prestressed pipe pile body.
[0009] Preferably, a mounting base plate is movably installed on the top of the load-bearing platform, a mounting screw groove is fixedly provided on the mounting base plate, and the mounting screw groove is opened on the top of the load-bearing platform. The mounting screw groove connects and fixes the mounting base plate to the load-bearing platform by providing mounting bolts adapted thereto.
[0010] Preferably, a hydraulic cylinder is fixedly mounted on the top of the mounting base plate, and the hydraulic cylinder is movably mounted on the top of the buffer pad.
[0011] Preferably, the hydraulic oil cylinder forms a double static pressure structure with the prestressed pipe pile body through the buffer pad, the upper buffer airbag and the lower buffer airbag.
[0012] Preferably, the inner pressure rod forms an auxiliary structure with the prestressed pipe pile body through the second reinforcing rib, the friction resistance block and the cross-shaped closed steel pile shoe.
[0013] Beneficial effects achieved by the utility model:
[0014] 1. The installation base plate and the load-bearing platform are conveniently fixed by installing bolts. The outer sleeve is pressed down by the hydraulic cylinder. A buffer pad is set on the top of the outer sleeve to buffer the pressure. The upper and lower buffer air bags are further buffered to prevent excessive pressure from causing damage to the outer sleeve and the prestressed pile body;
[0015] 2. The inner pressure rod is pressed down by the hydraulic cylinder, and the inner pressure rod enhances the friction resistance of the pile side and the pile end resistance through the friction resistance block to prevent pressure rebound and improve the bearing capacity of the single pile. The inner pressure rod is convenient for breaking the ground through the cross-shaped closed steel pile shoe, which is suitable for use in different soil layers. The prestressed pipe pile body is pressed into the soil by applying static pressure at the top and bottom of the pile at the same time. The first reinforcement rib and the second reinforcement rib help to improve the strength and toughness, prevent the inner pressure rod from bending and the prestressed pipe pile body from breaking during the static pressure process, and the correction sleeve facilitates the fixation of the prestressed pipe pile body directly below the outer sleeve, which helps to keep the downward pressure direction vertical. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;
[0017] Figure 2 This is a schematic cross-sectional structure diagram of an embodiment of the utility model;
[0018] Figure 3 It is a partial three-dimensional structural schematic diagram of an embodiment of the utility model;
[0019] Figure 4 For an embodiment of the utility model Figure 2 A schematic diagram of the enlarged structure in the middle.
[0020] Figure numerals: 1. load-bearing platform; 2. buffer groove; 3. mounting hole; 4. buffer pad; 5. upper buffer airbag; 6. lower buffer airbag; 7. outer sleeve; 8. prestressed pipe pile body; 9. first reinforcement rib; 10. correction sleeve; 11. inner pressure rod; 12. second reinforcement rib; 13. friction resistance block; 14. cross-shaped closed steel pile shoe; 15. mounting base plate; 16. mounting screw groove; 17. mounting bolt; 18. hydraulic cylinder. DETAILED DESCRIPTION
[0021] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.
[0022] like Figure 1-Figure 4 As shown, a prestressed pipe pile double static pressure construction device proposed by the utility model comprises a load-bearing platform 1, a buffer groove 2 is fixedly arranged on the load-bearing platform 1, a mounting hole 3 is fixedly arranged at the bottom of the buffer groove 2, a buffer pad 4 is movably installed on the inner wall of the buffer groove 2, an upper buffer airbag 5 is fixedly installed on the top of the buffer pad 4, a lower buffer airbag 6 is fixedly installed on the bottom of the buffer pad 4, a mounting base plate 15 is movably installed on the top of the load-bearing platform 1, a mounting screw groove 16 is fixedly arranged on the mounting base plate 15, and the mounting screw groove 16 is opened on the top of the load-bearing platform 1, and the mounting screw groove 16 is connected to the mounting base plate 15 and the load-bearing platform 1 by setting a mounting bolt 17 adapted thereto. The platform 1 is connected and fixed, and a hydraulic cylinder 18 is fixedly installed on the top of the mounting base plate 15. The hydraulic cylinder 18 is movably installed on the top of the buffer pad 4. The hydraulic cylinder 18 forms a double static pressure structure with the prestressed pipe pile body 8 through the buffer pad 4, the upper buffer airbag 5 and the lower buffer airbag 6. The mounting bolts 17 are used to facilitate the mounting and fixing of the mounting base plate 15 and the load-bearing platform 1. The outer sleeve 7 is pressed down by the hydraulic cylinder 18. A buffer pad 4 is provided on the top of the outer sleeve 7 to facilitate buffering of pressure. The upper buffer airbag 5 and the lower buffer airbag 6 are used for further buffering to prevent excessive pressure from causing damage to the outer sleeve 7 and the prestressed pipe pile body 8.
[0023] In this embodiment, an outer sleeve 7 is movably installed on the inner wall of the mounting hole 3, and the bottom of the outer sleeve 7 is movably connected to the prestressed pipe pile body 8, and the interior of the prestressed pipe pile body 8 is fixedly installed with a uniformly distributed first reinforcing rib 9, and the outside of the outer sleeve 7 is fixedly installed with a correction sleeve 10, and the inner wall of the correction sleeve 10 is movably installed with the prestressed pipe pile body 8, and the inner wall of the correction sleeve 10 is movably installed with an inner pressure rod 11, and the inner pressure rod 11 is movably installed inside the prestressed pipe pile body 8, and the inner wall of the inner pressure rod 11 is fixedly installed with a uniformly distributed second reinforcing rib 12, and the outer peripheral surface of the inner pressure rod 11 is fixedly installed with a uniformly distributed friction resistance block 13, and the lower end of the inner pressure rod 11 is fixedly installed with a cross-shaped closed steel pile shoe 14, and the cross-shaped closed steel pile shoe 14 is movably installed at the lower end of the prestressed pipe pile body 8, and the inner pressure rod 11 is connected to the inner wall of the correction sleeve 10. The second reinforcing ribs 12, the friction resistance block 13 and the cross-shaped closed steel pile shoe 14 form an auxiliary structure with the prestressed pipe pile body 8, which drives the inner pressure rod 11 to be pressed down by the hydraulic cylinder 18. The inner pressure rod 11 enhances the pile side friction resistance and pile end resistance through the friction resistance block 13 to prevent pressure rebound and improve the bearing capacity of the single pile. The inner pressure rod 11 is convenient for breaking the ground through the cross-shaped closed steel pile shoe 14, and is suitable for use in different soil layers. The prestressed pipe pile body 8 is pressed into the soil by applying static pressure at the top and bottom of the pile at the same time. The first reinforcing ribs 9 and the second reinforcing ribs 12 help to improve the strength and toughness, prevent the inner pressure rod 11 from bending and the prestressed pipe pile body 8 from breaking during the static pressure process, and the correction sleeve 10 facilitates the fixing of the prestressed pipe pile body 8 directly below the outer sleeve 7, which helps to keep the downward pressure direction vertical.
[0024] Working principle: First, the installation base plate 15 is conveniently installed and fixed to the load-bearing platform 1 by installing bolts 17, and the outer sleeve 7 is pressed down by the hydraulic cylinder 18. The top of the outer sleeve 7 is provided with a buffer pad 4 to facilitate pressure buffering. The upper buffer airbag 5 and the lower buffer airbag 6 are further buffered to prevent excessive pressure from causing damage to the outer sleeve 7 and the prestressed pile body 8. The inner pressure rod 11 is pressed down by the hydraulic cylinder 18, and the inner pressure rod 11 enhances the pile side friction resistance and pile end resistance through the friction resistance block 13. Preventing pressure rebound can improve the bearing capacity of a single pile. The inner pressure rod 11 is convenient for breaking the ground through the cross-shaped closed steel pile shoe 14 and is suitable for use in different soil layers. The prestressed pipe pile body 8 is pressed into the soil by applying static pressure at the top and bottom of the pile at the same time. The first reinforcing rib 9 and the second reinforcing rib 12 help to improve the strength and toughness and prevent the inner pressure rod 11 from bending and the prestressed pipe pile body 8 from breaking during the static pressure process. The correction sleeve 10 facilitates fixing the prestressed pipe pile body 8 directly below the outer sleeve 7, which helps to keep the downward pressure direction vertical.
[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
Claims
1. A prestressed pipe pile double static pressure construction device, characterized in that: The invention comprises a load-bearing platform (1), a buffer groove (2) being fixedly arranged on the load-bearing platform (1), a mounting hole (3) being fixedly arranged at the bottom of the buffer groove (2), a buffer pad (4) being movably mounted on the inner wall of the buffer groove (2), an upper buffer airbag (5) being fixedly mounted on the top of the buffer pad (4), and a lower buffer airbag (6) being fixedly mounted on the bottom of the buffer pad (4).
2. A prestressed pipe pile double static pressure construction device according to claim 1, characterized in that: An outer sleeve (7) is movably mounted on the inner wall of the mounting hole (3); the bottom of the outer sleeve (7) is movably connected to a prestressed pipe pile body (8); the interior of the prestressed pipe pile body (8) is fixedly mounted with uniformly distributed first reinforcing ribs (9); the exterior of the outer sleeve (7) is fixedly mounted with a correction sleeve (10); the inner wall of the correction sleeve (10) is movably mounted with the prestressed pipe pile body (8).
3. A prestressed pipe pile double static pressure construction device according to claim 2, characterized in that: An inner pressure rod (11) is movably installed inside the outer sleeve (7), and the inner pressure rod (11) is movably installed inside the prestressed pipe pile body (8), and the inner pressure rod (11) is fixedly installed with uniformly distributed second reinforcing ribs (12), and the outer peripheral surface of the inner pressure rod (11) is fixedly installed with uniformly distributed friction resistance blocks (13), and the lower end of the inner pressure rod (11) is fixedly installed with a cross-shaped closed steel pile shoe (14), and the cross-shaped closed steel pile shoe (14) is movably installed at the lower end of the prestressed pipe pile body (8).
4. A prestressed pipe pile double static pressure construction device according to claim 1, characterized in that: A mounting base plate (15) is movably mounted on the top of the load-bearing platform (1), a mounting screw groove (16) is fixedly arranged on the mounting base plate (15), and the mounting screw groove (16) is opened on the top of the load-bearing platform (1), and the mounting screw groove (16) is connected and fixed to the mounting base plate (15) and the load-bearing platform (1) by means of mounting bolts (17) matched thereto.
5. A prestressed pipe pile double static pressure construction device according to claim 4, characterized in that: A hydraulic cylinder (18) is fixedly mounted on the top of the mounting base plate (15), and the hydraulic cylinder (18) is movably mounted on the top of the buffer pad (4).
6. A prestressed pipe pile double static pressure construction device according to claim 5, characterized in that: The hydraulic oil cylinder (18) forms a double static pressure structure with the prestressed pipe pile body (8) through the buffer pad (4), the upper buffer airbag (5) and the lower buffer airbag (6).
7. A prestressed pipe pile double static pressure construction device according to claim 3, characterized in that: The inner pressure rod (11) forms an auxiliary structure with the prestressed pipe pile body (8) through the second reinforcing rib (12), the friction resistance block (13) and the cross-shaped closed steel pile shoe (14).