PCMW construction method pile top elevation control device
By using a combination of steel sleeves, clamp assemblies, and telescopic steel pipe rulers in PCMW pile construction, the accuracy problem of controlling the top elevation of the inserted PRC pipe piles was solved, achieving precise control and refined construction, and reducing construction costs.
Patent Information
- Application Number
- CN202520081809.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-14
AI Technical Summary
During the construction of existing PCMW piles, it is difficult to accurately control the top elevation of the inserted PRC pipe piles, especially at deeper locations below ground level. Existing methods are complex to operate and lack precision.
A PCMW method pile top elevation control device is adopted, including a steel sleeve, a clamp assembly, a positioning cylinder and a telescopic steel pipe ruler. The clamp assembly is fixed on the PRC pipe pile, and the telescopic steel pipe ruler is used to measure the pile depth in real time to control the pile top elevation. Combined with the rope unlocking device, precise control is achieved.
It achieves precise control of the top elevation of PCMW method piles, reduces subsequent costs caused by elevation deviations, improves the level of construction precision, and is recyclable.
Smart Images
Figure CN223766867U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a PCMW method pile top elevation control device, belonging to the field of geotechnical engineering construction technology. Background Technology
[0002] PCMW (Prestressed Concrete Mixing) piles are constructed by inserting PRC (Prestressed Concrete Pipe) pipe piles into interlocking triaxial cement mixing piles. This method provides both soil retention and effective water control, and is increasingly widely used as a novel foundation pit support method. However, for PCMW piles located deep below ground level, accurately controlling the top elevation of the inserted PRC pipe piles remains a significant challenge. Current PCMW pile construction methods primarily rely on marking lines on the pile driver and then using a level for measurement and control. This approach is complex and lacks precision, particularly limiting its effectiveness when the top of the inserted PRC pipe piles is located deep below ground level. Utility Model Content
[0003] The main purpose of this utility model is to provide a PCMW method pile top elevation control device to overcome the shortcomings of the existing technology.
[0004] The objective of this utility model can be achieved by adopting the following technical solution:
[0005] A PCMW (Pile Top Elevation Control) method pile top elevation control device includes a steel sleeve. Two clamping assemblies are symmetrically installed on both sides of the steel sleeve. Positioning cylinders are symmetrically connected to the outer walls of both sides of the steel sleeve. The clamping assemblies include clamps, square tubes, positioning pins, springs, and positioning plates. The square tubes penetrate the side walls of the positioning cylinders and the steel sleeve. The positioning plates are fixedly connected to the outer wall of the square tubes located inside the positioning cylinders. The clamps are located inside the steel sleeves and are fixedly connected to one end of the square tubes. The springs are sleeved on the outer side of the square tubes and are located between the steel sleeves and the positioning plates. The positioning pins are detachably connected between the square tubes and the positioning cylinders. Telescopic steel rulers are connected to both sides of the steel sleeves.
[0006] Preferably, a handle is fixedly connected to the end of the square tube away from the clamp.
[0007] Preferably, the clamp is an arc-shaped clamp, and anti-slip textures are provided on the opposite sidewalls of the two clamps.
[0008] Preferably, a protective cover is fixedly connected to the top of the positioning cylinder, and a telescopic steel ruler is fixedly connected to the top of the protective cover.
[0009] Preferably, a top plate is fixedly connected to the top of the positioning pin, a hanging rope is fixedly connected to the top of the top plate, and a through groove is provided on the protective cover to cooperate with the hanging rope.
[0010] Preferably, both the positioning cylinder and the square tube have multiple positioning holes that mate with the positioning pins.
[0011] The beneficial technical effects of this utility model are as follows: The pile top elevation control device of this utility model has a simple structure and is easy to operate. It can accurately control the pile top elevation of PCMW method piles, reduce the cost of later pile cutting or splicing caused by pile top elevation deviation, and improve the level of refined control in the construction process. This device is suitable for controlling the pile top elevation of PRC pipe piles with different diameters inserted into PCMW method piles and can be reused repeatedly, with significant practical effects. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure according to a preferred embodiment of the present invention;
[0013] Figure 2 This is a cross-sectional view of the overall structure according to a preferred embodiment of the present invention;
[0014] Figure 3 This is a top view of the overall structure according to a preferred embodiment of the present invention.
[0015] In the diagram: 1. Steel sleeve; 2. Clamp; 3. Lifting rope; 4. Telescopic steel pipe ruler; 5. Square tube; 6. Protective cover; 7. Positioning pin; 8. Spring; 9. Positioning plate; 10. Positioning cylinder; 11. Handle; 12. Through groove; 13. Positioning hole. Detailed Implementation
[0016] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.
[0017] like Figures 1-3 As shown, the PCMW method pile top elevation control device provided in this embodiment includes a steel sleeve 1. Two clamping assemblies are symmetrically installed on both sides of the steel sleeve 1. Positioning cylinders 10 are symmetrically connected to the outer walls of both sides of the steel sleeve 1. The clamping assemblies include clamps 2, square tubes 5, positioning pins 7, springs 8, and positioning plates 9. The square tubes 5 pass through the positioning cylinders 10 and the side walls of the steel sleeve 1. The positioning plates 9 are fixedly connected to the outer wall of the square tubes 5 located inside the positioning cylinders 10. The clamps 2 are located inside the steel sleeve 1 and are fixedly connected to one end of the square tubes 5. The springs 8 are sleeved on the outer side of the square tubes 5 and are located between the steel sleeve 1 and the positioning plates 9. The positioning pins 7 are detachably connected between the square tubes 5 and the positioning cylinders 10. Telescopic steel pipe rulers 4 are connected to both sides of the steel sleeve 1. With the clamp assembly and telescopic steel pipe ruler 4, during the PCMW method pile construction, the device of this utility model is installed at the pile end of the PRC pipe pile. As the PRC pipe pile is inserted into the cement mixing pile and sinks synchronously, the steel pipe rulers on both sides of the steel sleeve extend section by section during the sinking process. By reading the scale of the steel pipe ruler, the driving depth of the PRC pipe pile is controlled, thereby controlling the pile top elevation.
[0018] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, a handle 11 is fixedly connected to the end of the square tube 5 away from the clamp 2. The clamp 2 is an arc-shaped clamp, and anti-slip textures are provided on the opposite sidewalls of the two clamps 2. Multiple positioning holes 13 that cooperate with positioning pins 7 are provided on both the positioning cylinder 10 and the square tube 5. With the handle 11, the arc-shaped clamp 2 at one end of the square tube 5 is used to clamp the pipe pile, and the handle 11 at the other end allows the distance between the two clamps 2 to be adjusted by pushing and pulling the square tube 5. The positioning pins 7 are inserted into the positioning holes 13 to clamp pipe piles of different diameters.
[0019] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, a protective cover 6 is fixedly connected to the top of the positioning cylinder 10, a telescopic steel ruler 4 is fixedly connected to the top of the protective cover 6, a top plate is fixedly connected to the top of the positioning pin 7, and a lifting rope 3 is fixedly connected to the top of the top plate. A through groove 12 that cooperates with the lifting rope 3 is provided on the protective cover 6. Due to the setting of the top plate, the positioning pin 7 cannot pass through the through groove 12. Therefore, the measurement ends when the PRC pipe pile sinks to the designed pile top elevation. The device of this utility model is unlocked and separated from the PRC pipe pile and lifted to the ground by pulling the lifting rope 3 on the ground.
[0020] In this embodiment, as Figures 1-3 As shown in the figure, the working process of the PCMW method pile top elevation control device provided in this embodiment is as follows:
[0021] Clamp 2 clamps and secures the device to the PRC pipe pile. As the PRC pipe pile sinks, the device sinks synchronously, and the telescopic steel ruler 4 is pulled out in sections. The pile driving depth is calculated by reading the scale of the telescopic steel ruler 4, allowing for real-time monitoring of the PRC pipe pile top elevation. When the PRC pipe pile top elevation reaches the design requirement, pile driving is stopped. On the ground, the positioning pin 7 is pulled out by the lifting rope 3, and simultaneously, the spring 8 pushes the square tube 5 outward, separating clamp 2 from the PRC pipe pile. The lifting rope 3 is then pulled to bring the device to the ground.
[0022] The above are merely further embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed by this utility model, based on the technical solution and concept of this utility model, shall fall within the protection scope of this utility model.
Claims
1. A device for controlling the elevation of the top of a PCMW method pile, comprising a steel sleeve (1), characterised in that, Two clamping assembly are symmetrically arranged on both sides of the steel sleeve (1), and positioning cylinders (10) are symmetrically connected to the outer walls of both sides of the steel sleeve (1); the clamping assembly comprises a clamp (2), a square tube (5), a positioning pin (7), a spring (8) and a positioning plate (9); the square tube (5) penetrates the positioning cylinder (10) and the side wall of the steel sleeve (1); the positioning plate (9) is fixedly connected to the outer wall of the square tube (5) on the inner side of the positioning cylinder (10); the clamp (2) is located on the inner side of the steel sleeve (1) and is fixedly connected to one end of the square tube (5); the spring (8) is sleeved on the outer side of the square tube (5) and is located between the steel sleeve (1) and the positioning plate (9); the positioning pin (7) is detachably connected between the square tube (5) and the positioning cylinder (10); and the telescopic steel tape (4) is connected to both sides of the steel sleeve (1).
2. A PCMW method pile top elevation control device according to claim 1, characterized in that, The end, away from the clamp (2), of the square tube (5) is fixedly connected with a handle (11).
3. A PCMW method pile top elevation control device according to claim 1, characterized in that, The clamp (2) is an arc-shaped clamp, and anti-skid lines are arranged on the opposite side walls of the two clamps (2).
4. A PCMW method pile top elevation control device according to claim 1, characterized in that, The top of the positioning cylinder (10) is fixedly connected with a protective cover (6), and the telescopic steel tape (4) is fixedly connected to the top of the protective cover (6).
5. A PCMW method pile top level control device according to claim 4, characterised in that, The top end of the positioning pin (7) is fixedly connected with a top plate, the top of the top plate is fixedly connected with a lifting rope (3), and the protective cover (6) is provided with a through slot (12) matched with the lifting rope (3).
6. A PCMW method pile top elevation control device according to claim 1, characterized in that, A plurality of positioning holes (13) matched with the positioning pin (7) are formed in the positioning cylinder (10) and the square tube (5).