CN219060024U

CN219060024U - Post-expansion-head grouting precast tubular pile applicable to solar photovoltaic

Info

Publication number: CN219060024U
Application number: CN202222765559.6U
Authority: CN
Inventors: 钱海波; 江涛; 戴进; 耿哲; 邵长华; 董毓广; 陈志明
Original assignee: Shanghai Tieneng Construction Engineering Co ltd
Current assignee: Shanghai Tieneng Construction Engineering Co ltd
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2023-05-23
Anticipated expiration: 2032-10-20

Abstract

The utility model belongs to the technical field of pile foundation engineering, and particularly relates to a post grouting precast tubular pile capable of being applied to solar photovoltaic expansion heads. The utility model can doubly improve the bearing capacity and the pulling resistance of the pile body by matching the annular tooth-shaped bulges, the blade-shaped enlarged pile head and the injection of slurry into the reserved steel pipe grouting pore canal, has simple manufacturing process, can greatly save the cost and is worth popularizing.

Description

Post-expansion-head grouting precast tubular pile applicable to solar photovoltaic

Technical Field

The utility model belongs to the technical field of pile foundation engineering, and particularly relates to a post-grouting precast tubular pile which can be applied to an enlarged head of solar photovoltaic.

Background

The precast pile has the advantages of high construction efficiency, convenience in transportation, stable quality, economy, environmental protection and the like, and along with the development of the field of offshore solar photovoltaic, the precast pile is used in a large amount for pile foundation construction of the offshore solar photovoltaic power generation panel. In recent years, the requirements on the compression resistance and the pulling resistance of precast piles are continuously improved, and the existing solution means is to select precast piles with large diameters and long pile bodies, so that the bearing capacity and the pulling resistance of pile bodies are improved.

Because the surface of the precast pile is smooth, the friction between the pile body and the contacted soil body is usually small, the offshore solar photovoltaic panel is usually positioned on a mucky soil layer, the soil is weak, the precast pile arranged under the photovoltaic panel is difficult to exert the pile end bearing performance, the compressive strength of the pile body is far greater than the design bearing capacity requirement according to practical construction experience, and the pile diameter sometimes has to be enlarged to improve the pulling resistance and the vertical bearing capacity of the pile foundation due to the small diameter of the pile end, so that the pile and the construction method thereof can be applied to the pile foundation after the expansion of the solar photovoltaic are needed.

Disclosure of Invention

Aiming at the problems that the surface of a precast pile is smooth, the friction between a pile body and a contact soil body is small, an offshore solar photovoltaic plate is often positioned on a mucky soil layer, the soil is weak, and the precast pile is arranged below the photovoltaic plate so as to hardly exert the pile end bearing performance, the precast pile is provided with the post-grouting precast pile which can be applied to the expansion head of solar photovoltaic.

The utility model provides a post grouting precast pile post of expansion head that can be applied to solar photovoltaic, includes the precast pile body, the outer wall of precast pile body is provided with multichannel annular tooth form arch, the lower extreme of precast pile body is provided with the sword shape and expands the pile head, sword shape expands the pile head bottom and is sealed the bottom by the closing plate, the inside symmetry of lateral wall of precast pile body is provided with two reserved steel pipe grouting duct, the lower extreme of reserved steel pipe grouting duct all is provided with the grout outlet, grout outlet department is provided with the check film, the check film passes through fixing bolt and expands the head lateral wall and fixes, the upper end of precast pile body is provided with the manometer that can survey grouting pressure.

Preferably, the edge-type enlarged pile head bottom end sealing plate can prevent water and soil at the pile end and injected slurry from flowing back into the cavity inside the prefabricated pile body, and is made of UHPC high-strength concrete.

Preferably, the grout outlet is positioned on the side wall of the bottom of the blade-shaped enlarged pile head.

Preferably, the reserved steel pipe grouting pore canal can be internally grouted after the precast pile is driven to a designed depth, and the grout is one of cement grout, cement mortar, water glass, UHPC high-strength concrete and a curing agent.

Preferably, the prefabricated pile body is set to be a prestressed concrete pipe pile, and the pile diameter of the prefabricated pile body is adjusted within 300-800 mm.

Preferably, one side of prefabricated pile body is provided with monitoring mechanism, monitoring mechanism includes the backup pad, one side of backup pad is provided with the slide rail, one side of backup pad is provided with long-range wireless receiving module, the bottom of backup pad is provided with servo motor, the threaded rod is installed in the inside rotation of slide rail, the movable block is installed to the outside screw thread of threaded rod, the both sides slidable mounting of movable block is in the inside of slide rail, one side rotation of movable block is connected with the camera, the camera position staggers with the manometer.

Based on the above description, the utility model also provides a construction method of the bag-type enlarged-head prefabricated pipe pile, which comprises the following steps:

s1, positioning: positioning and paying off according to the pile position design drawing;

s2, pile pressing: reasonably selecting and utilizing equipment such as a static pile driver, a hammering pile driver, a driving and pulling machine and the like to drive the prefabricated pile body into a design position of a construction drawing according to construction conditions, and controlling pile position deviation and perpendicularity of the prefabricated pile body during driving;

s3, grouting: grouting materials are selected according to design requirements, grouting amount is calculated, slurry is prepared, and grouting pressure is adjusted;

s4, sealing: and (3) carrying out double control on grouting quantity and grouting pressure, stopping grouting after parameters reach design requirements, and sealing the pile top in time to finish pile body construction.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model can doubly improve the bearing capacity and the pulling resistance of the pile body by matching the annular tooth-shaped bulges, the blade-shaped enlarged pile head and the injection of slurry into the reserved steel pipe grouting pore canal, has simple manufacturing process, can greatly save the cost and is worth popularizing.

2. According to the utility model, the grouting pressure can be regulated through the pressure value displayed on the pressure gauge by arranging the pressure gauge, so that the grouting quantity and the grouting pressure are controlled in double, and the grouting is stopped and the pile top of the prefabricated pile body is sealed in time after the parameters reach the design requirements.

3. The utility model can prevent the grouting slurry from flowing back into the reserved grouting pore canal of the steel pipe through the non-return film arranged at the grouting outlet.

Drawings

FIG. 1 is a schematic elevational view of the structure of the present utility model;

FIG. 2 is a schematic diagram of the front view of the edge-shaped enlarged pile head according to the present utility model;

FIG. 3 is a schematic diagram of the front view of the monitoring mechanism of the present utility model;

fig. 4 is a schematic top view of the precast pile body of the present utility model.

In the figure: 1. prefabricating a pile body; 2. a plurality of annular toothed projections; 3. blade-shaped enlarged pile head; 4. sealing plate; 7. a slurry outlet; 8. a non-return film; 9. a fixing bolt; 10. reserving a grouting pore canal of the steel pipe; 11. a pressure gauge; 200. a monitoring mechanism; 210. a servo motor; 211. a remote wireless receiving module; 212. a support plate; 213. a slide rail; 214. a threaded rod; 215. a moving block; 216. a camera is provided.

Detailed Description

Example 1

Referring to fig. 1-4, an embodiment of the present utility model is provided: the utility model provides a post grouting precast pile post of expansion head that can be applied to solar photovoltaic, including precast pile body 1, precast pile body 1's outer wall is provided with multichannel annular tooth form arch 2, precast pile body 1's lower extreme is provided with sword shape expansion pile head 3, sword shape expansion pile head 3 bottom is sealed by sealing plate 4, precast pile body 1's lateral wall inside symmetry is provided with two reserved steel pipe grouting duct 10, reserved steel pipe grouting duct 10's lower extreme all is provided with outlet 7, outlet 7 department is provided with check film 8, check film 8 passes through fixing bolt 9 and is fixed with expansion head lateral wall, precast pile body 1's upper end is provided with the manometer 11 that can survey grouting pressure, the pressure value that shows on the manometer 11 adjusts grouting pressure, carry out dual control to grouting volume and grouting pressure, be convenient for stop grouting after the parameter reaches the design requirement and in time with precast pile body 1's top, through the check film 8 that sets up at outlet 7, can prevent grouting back grout to flow into reserved steel pipe grouting duct 10.

Furthermore, the positions and the sizes of the plurality of annular toothed protrusions 2 can be calculated and adjusted according to actual engineering requirements.

Further, the precast pile body 1 is arranged as a prestressed concrete pipe pile, and the pile diameter of the precast pile body 1 is adjusted within 300-800 mm.

Example two

Compared with the first embodiment, referring to fig. 2, the diameter of the blade-shaped enlarged pile head 3 can be 1.5-3 times of the diameter of the prefabricated pile body according to actual engineering requirements, and the bearing capacity and the pulling resistance of the pile body can be improved by times through the cooperation of a plurality of annular tooth-shaped bulges 2, the blade-shaped enlarged pile head 3 and the grouting liquid injected into the reserved steel pipe grouting pore channel 10.

Furthermore, the sealing plate 4 at the bottom end of the blade-shaped enlarged pile head 3 can prevent water, soil and injected slurry at the pile end from flowing back into the cavity inside the precast pile body 1, and is made of UHPC high-strength concrete.

Further, the grout outlet 7 is positioned on the side wall of the bottom of the blade-shaped enlarged pile head 3.

Further, the reserved grouting duct 10 of the steel pipe can be internally grouted after the precast pile is driven to a designed depth, and the grout is one of cement grout, cement mortar, water glass, UHPC high-strength concrete and a curing agent.

Example III

Compared with the first embodiment, referring to fig. 3, a monitoring mechanism 200 is arranged on one side of a prefabricated pile body 1, the monitoring mechanism 200 comprises a supporting plate 212, a sliding rail 213 is arranged on one side of the supporting plate 212, a remote wireless receiving module 211 is arranged on one side of the supporting plate 212, a servo motor 210 is arranged at the bottom end of the supporting plate 212, a threaded rod 214 is rotatably arranged in the sliding rail 213, a moving block 215 is arranged on the outer side thread of the threaded rod 214, two sides of the moving block 215 are slidably arranged in the sliding rail 213, a camera 216 is rotatably connected on one side of the moving block 215, and the position of the camera 216 is staggered with that of the pressure gauge 11; the servo motor 210 is started in a remote wireless control manner, the threaded rod 214 is enabled to rotate, the moving block 215 slides in the sliding rail 213, the camera 216 is enabled to be close to the front side of the pressure gauge 11, the pressure value is convenient to observe, meanwhile, the camera 216 is enabled to rotate, the bearing condition of the prefabricated pile body 1 can be detected in a large range, danger is prevented, and abnormal conditions can be timely treated.

The working principle of the utility model is as follows: the grouting pressure is regulated through the pressure value displayed on the pressure gauge 11, the grouting amount and the grouting pressure are controlled in a double mode, grouting is stopped after parameters reach design requirements, the pile top of the prefabricated pile body 1 is sealed in time, and grouting liquid can be prevented from flowing back into the reserved steel pipe grouting pore canal 10 after grouting through the check film 8 arranged at the grouting outlet 7.

The servo motor 210 is started in a remote wireless control manner, the threaded rod 214 is enabled to rotate, the moving block 215 slides in the sliding rail 213, the camera 216 is enabled to be close to the front side of the pressure gauge 11, the pressure value is convenient to observe, meanwhile, the camera 216 is enabled to rotate, the bearing condition of the prefabricated pile body 1 can be detected in a large range, danger is prevented, and abnormal conditions can be timely treated.

The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.

Claims

1. The utility model provides a post grouting precast pile post of expansion head that can be applied to solar photovoltaic, its characterized in that, including precast pile body (1), the outer wall of precast pile body (1) is provided with multichannel annular tooth form arch (2), the lower extreme of precast pile body (1) is provided with sword shape expansion pile head (3), sword shape expansion pile head (3) bottom is by sealing plate (4) back cover, the inside symmetry of lateral wall of precast pile body (1) is provided with two reserved steel pipe grouting duct (10), the lower extreme of reserved steel pipe grouting duct (10) all is provided with grout outlet (7), grout outlet (7) department is provided with check film (8), check film (8) are fixed with the expansion head lateral wall through fixing bolt (9), the upper end of precast pile body (1) is provided with manometer (11) that can survey grouting pressure.

2. The post-expansion grouting precast tubular pile applicable to solar photovoltaic according to claim 1, wherein the edge-shaped expansion pile head (3) bottom end sealing plate (4) can prevent water and soil at the pile end and injected slurry from flowing back into the cavity inside the precast pile body, and is made of UHPC high-strength concrete.

3. The post-expansion grouting precast tubular pile applicable to solar photovoltaic according to claim 1, wherein the grout outlet (7) is positioned on the bottom side wall of the blade-shaped expansion pile head (3).

4. The post-expansion grouting precast tubular pile applicable to solar photovoltaic according to claim 1, wherein the reserved steel pipe grouting pore canal (10) can be internally grouted after the precast pile is driven into a designed depth, and the grout is one of cement grout, cement mortar, water glass, UHPC high-strength concrete and a curing agent.

5. The post-expansion grouting precast tubular pile applicable to solar photovoltaic according to claim 1, wherein the precast pile body (1) is a prestressed concrete tubular pile, and the pile diameter of the precast pile body (1) is adjusted within 300-800 mm.

6. The post-grouting precast pile applicable to the enlarged head of solar photovoltaic according to claim 1, characterized in that a monitoring mechanism (200) is arranged on one side of the precast pile body (1), the monitoring mechanism (200) comprises a supporting plate (212), a sliding rail (213) is arranged on one side of the supporting plate (212), a remote wireless receiving module (211) is arranged on one side of the supporting plate (212), a servo motor (210) is arranged at the bottom end of the supporting plate (212), a threaded rod (214) is rotatably arranged in the sliding rail (213), a moving block (215) is arranged on the outer side of the threaded rod (214) in a threaded manner, two sides of the moving block (215) are slidably arranged in the sliding rail (213), a camera (216) is rotatably connected to one side of the moving block (215), and the position of the camera (216) is staggered with the pressure gauge (11).