Novel multifunctional prefabricated pipe pile with dewatering and drainage functions

Abstract

The novel multifunctional prefabricated pipe pile comprises a pipe pile body and a flushing pipe, the pipe pile body comprises a pile tip and a pile body, the pile body is located at the upper end of the pile tip, a plurality of evenly-distributed water permeable holes are formed in the pile body, the flushing pipe is provided with a plurality of water outlet pipes, the water outlet pipes are communicated with the water permeable holes, the flushing pipe is vertically distributed, and the water outlet pipes are communicated with the water permeable holes. According to the method, the construction cost in the precipitation stage is reduced, the construction period is shortened, and the utilization efficiency of existing facilities on site is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pile foundation construction, and more particularly to a novel multifunctional prefabricated pipe pile with drainage functions. Background Art

[0002] Precast concrete pipe piles are a type of pile foundation component prefabricated in a factory and driven into the ground using a specific construction process. They are widely used as foundation support in construction projects. Precast concrete pipe piles are currently the most widely used type of pile in pile foundation projects. Traditional pipe piles are primarily used to support the load of the superstructure and have a relatively simple function. In fact, after the pile foundation and retaining structure are completed, the next step is to dewater the foundation pit. Therefore, a large number of dewatering wells must be drilled before dewatering can begin, which consumes a significant amount of construction costs and time. Summary of the Invention

[0003] In response to the problems existing in the prior art, the purpose of the present invention is to provide a new type of multifunctional prefabricated pipe pile with both drainage and dewatering functions, thereby reducing the construction cost during the dewatering stage, shortening the construction period, and improving the utilization efficiency of existing facilities on site.

[0004] The present invention adopts the following technical solutions:

[0005] A new type of multifunctional prefabricated pipe pile with both drainage and lowering functions includes a pipe pile body and a flushing pipe. The pipe pile body includes a pile tip and a pile body. The pile body is located at the upper end of the pile tip. A number of evenly distributed water holes are provided on the pile body. The flushing pipe is provided with multiple water outlet pipes, which are connected to the water holes. The flushing pipes are distributed vertically and the water holes are distributed horizontally.

[0006] Furthermore, two water-permeable holes are provided on the same plane, and the two water-permeable holes intersect vertically.

[0007] Furthermore, there are four flushing pipes, which are evenly distributed around the circumference.

[0008] Furthermore, the flush pipe is made of PVC.

[0009] Furthermore, the bottom water hole is located one-third of the way up from the pile tip.

[0010] Furthermore, after the steel cage is tied, the flushing pipe is fixed on the steel cage, and the embedded parts of the water holes are fixed on the pile body steel cage at the same time.

[0011] Furthermore, the drainage method is as follows: after the soil is excavated to the top of the pipe pile, high-pressure water is first injected into the flushing pipe by using high-pressure water flushing to clean the silt inside the water holes of the pile body, and then the vacuum pump is sunk into the cavity of the pipe pile body, the head of the pipe pile body is sealed, and the inside of the pipe pile body is vacuumed. Under the action of pressure, the water inside the soil converges toward the pipe pile body and enters the pipe pile body through the water holes. Finally, a water pump is used to pump out the water inside the pipe pile body.

[0012] Beneficial effects

[0013] The present invention can directly eliminate the process of re-drilling a dewatering well on site, greatly saving construction costs, reducing the occupation of the construction work surface, and shortening the process;

[0014] The present invention can achieve the purpose of early drainage, and the extracted groundwater can be used for temporary water needs on site, greatly saving the demand for tap water on the construction site, reducing project costs, and realizing green construction;

[0015] The present invention can reduce drainage in advance and effectively alleviate the excess pore water pressure caused by static pressure pile construction, thereby alleviating the adverse effects of on-site soil squeezing effect on surrounding municipal facilities and structures / buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a pipe pile body according to an embodiment of the present invention;

[0017] Figure 2 This is an expanded view of a pipe pile body according to an embodiment of the present invention;

[0018] Figure 3 This is a cross-sectional view of a pipe pile body according to an embodiment of the present invention;

[0019] Figure 4 This is a partial schematic diagram of a flushing pipe located within a pile body according to an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of a flushing water hole according to an embodiment of the present invention;

[0021] Figure 6 This is a drainage diagram according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] As shown in the figure, the present invention discloses a new multifunctional prefabricated pipe pile with the function of draining water, including a pipe pile body 1 and a flushing pipe 2. The pipe pile body 1 includes a pile tip 11 and a pile body 12. The pile body 12 is located at the upper end of the pile tip 11. The pile body 12 is provided with a plurality of evenly distributed water holes 121. The flushing pipe 2 is provided with a plurality of outlet pipes 21, which are connected to the water holes 121. The flushing pipes 2 are distributed vertically and the water holes 121 are distributed horizontally.

[0024] In one embodiment of the present invention, two water holes 121 are provided on the same plane, intersecting perpendicularly. The number of water holes 121 is determined by calculation based on the pile's dimensions, material strength, and allowable reduction factor for bearing capacity. Water holes 121 are circular and extend through the pile shaft 12.

[0025] In one embodiment of the present invention, four flushing pipes 2 are provided, and the four flushing pipes 2 are evenly distributed around the circumference. The flushing pipes 2 are pre-buried inside the pipe pile.

[0026] In one embodiment of the present invention, the flush pipe 2 is made of PVC.

[0027] In one embodiment of the present invention, the bottommost water permeable hole 121 is located at one-third of the way up from the pile tip 11 .

[0028] In one embodiment of the present invention, after the reinforcement cage is tied, the flushing pipe is secured to the pile cage, and the embedded water hole components are simultaneously secured to the pile cage. Once these embedded components are secured, conventional methods for producing piles can be followed, including concrete pouring, centrifugal rotation, and high-temperature, high-pressure steam curing.

[0029] In one embodiment of the present invention, the drainage method is as follows: after the soil is excavated to the top of the pile, Figure 5 As shown in the figure, firstly, high-pressure water is injected into the flushing pipe to clean the silt inside the water holes of the pile body, and then the vacuum pump is sunk into the cavity of the pile body. Figure 6 As shown, the head of the pipe pile body is closed, the interior of the pipe pile body is vacuumed, and the water inside the soil is gathered toward the pipe pile body under pressure and enters the pipe pile body through the water-permeable holes. Finally, a water pump is used to pump out the water inside the pipe pile body.

[0030] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A new type of multifunctional prefabricated pipe pile with drainage function, characterized by: It includes a pipe pile body and a flushing pipe. The pipe pile body includes a pile tip and a pile body. The pile body is located at the upper end of the pile tip. The pile body is provided with several evenly distributed water holes. The flushing pipe is provided with multiple water outlet pipes, which are connected to the water holes. The flushing pipes are distributed vertically and the water holes are distributed horizontally.

2. The novel multifunctional prefabricated pipe pile with drainage function according to claim 1 is characterized in that: Two water holes are provided on the same plane, and the two water holes intersect vertically.

3. The novel multifunctional prefabricated pipe pile with drainage function according to claim 2 is characterized in that: There are 4 flushing pipes, which are evenly distributed around the circumference.

4. The novel multifunctional prefabricated pipe pile with drainage function according to claim 3 is characterized in that: The material of the flush pipe is PVC.

5. The novel multifunctional prefabricated pipe pile with drainage function according to claim 1 is characterized in that: The bottom water hole is located one-third of the way up from the pile tip.

6. The novel multifunctional prefabricated pipe pile with drainage function according to claim 1 is characterized in that: After the steel cage is tied, the flushing pipe is fixed on the steel cage, and the embedded parts of the water hole are fixed on the steel cage of the pile body at the same time.

7. The novel multifunctional prefabricated pipe pile with drainage function according to claim 1 is characterized in that: The drainage method is as follows: after the soil is excavated to the top of the pipe pile, high-pressure water is first injected into the flushing pipe using high-pressure water to flush out the silt inside the water holes of the pile body. Then, a vacuum pump is sunk into the cavity of the pipe pile body, the head of the pipe pile body is sealed, and the inside of the pipe pile body is vacuumed. Under the action of pressure, the water inside the soil converges toward the pipe pile body and enters the pipe pile body through the water holes. Finally, a water pump is used to pump out the water inside the pipe pile body.

Images