Conical perforated pipe piles that can accelerate the dissipation of excess pore water pressure

Abstract

This utility model discloses a conical perforated pipe pile that can accelerate the dissipation of excess pore water pressure, comprising: a conical pile, on which an integrated pore flow guiding and discharge water pressure dissipation structure is installed; the integrated pore flow guiding and discharge water pressure dissipation structure includes: an inner cavity, several dissipation perforations, several conical guide buckets, an external suction and discharge pipe, and several connecting water holes; this utility model relates to the field of conical pile technology, and the beneficial effects of this invention are: it solves the problem that existing methods for dissipating excess pore water pressure mostly adopt preloading and drainage consolidation methods, but these methods have limitations such as long construction cycles and unsatisfactory results. The drainage consolidation method requires the setting of drainage channels such as drainage boards, but the drainage efficiency is low, making it difficult to quickly and effectively reduce excess pore water pressure and affecting construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of conical pile technology, specifically to a conical perforated pipe pile that can accelerate the dissipation of excess pore water pressure. Background Technology

[0002] In the field of civil engineering, especially during pile foundation construction, such as soft soil foundation treatment and high-rise building pile foundation construction, the problem of excess pore water pressure is often encountered. Excess pore water pressure is an additional pressure generated inside the soil when the pore water in the soil cannot be discharged in time under the action of external forces (such as pile driving, soil displacement, etc.), which is higher than the hydrostatic pressure. The presence of excess pore water pressure has many adverse effects on pile foundation construction and the surrounding environment. It reduces the effective stress of the soil, leading to a decrease in soil strength, which reduces the bearing capacity of the piles and affects the stability and safety of the building. The dissipation process of excess pore water pressure is relatively slow, which prolongs the construction period and increases the project cost. Moreover, during the dissipation process, it may also cause uneven settlement of the surrounding ground, which may damage surrounding buildings, underground pipelines, etc. Existing methods for dissipating excess pore water pressure mostly use preloading and drainage consolidation methods, but these methods have limitations such as long construction cycles and unsatisfactory results. Drainage consolidation methods require the installation of drainage channels such as drainage boards, but the drainage efficiency is low and it is difficult to quickly and effectively reduce excess pore water pressure, which affects construction efficiency. Utility Model Content

[0003] To achieve the above objectives, this utility model is implemented through the following technical solution: a conical perforated pipe pile that can accelerate the dissipation of excess pore water pressure, comprising: a conical pile, on which an integrated pore flow guiding and discharge water pressure dissipation structure is installed;

[0004] The integrated pore flow guiding and discharge water pressure dissipation structure includes: an inner cavity, several dissipation perforations, several conical flow guiding buckets, an external suction and discharge pipe, and several connecting water holes;

[0005] The inner cavity is opened inside the conical pile. Several dissipation perforations are evenly opened in a circle on the conical pile. Several conical guide buckets are installed longitudinally on the inner wall of the inner cavity with a spacing of three dissipation perforations. The external suction and discharge pipe is installed longitudinally through the several conical guide buckets. Several connecting water holes are opened on the outer wall of the external suction and discharge pipe.

[0006] Preferably, a columnar section is provided on the outer side of the upper end of the conical pile.

[0007] Preferably, reinforcing ribs are provided on the inner wall surface of the inner cavity.

[0008] Preferably, the diameter of the several conical guide buckets decreases sequentially from top to bottom.

[0009] Preferably, a fixed bracket is installed on the external suction and discharge pipe.

[0010] Preferably, the bottom of the connecting water hole is located at the lowest point of the cavity inside the conical guide bucket.

[0011] Beneficial effects

[0012] This invention provides a conical perforated pipe pile that accelerates the dissipation of excess pore water pressure, offering the following advantages: This design employs an integrated pore flow guiding and discharge water pressure dissipation structure. Through its unique design, the dissipation rate of excess pore water pressure is significantly improved. The inner cavity provides space for pore water to accumulate, and several evenly spaced perforations on the conical pile allow pore water in the surrounding soil to smoothly enter the inner cavity. The installation of the conical guide bucket further guides the pore water to flow in a specific direction, while the external suction and discharge pipe rapidly discharges the pore water from the inner cavity to the outside of the pile through suction. This effectively accelerates the dissipation of excess pore water pressure, significantly shortens the construction period, and improves construction efficiency. Because of the rapid dissipation of excess pore water pressure, the surrounding soil can recover effective stress more quickly, thus improving soil strength. This allows the side friction and end resistance of the piles to be fully utilized, thereby significantly enhancing the vertical bearing capacity of the piles, ensuring the stability and safety of the building, reducing the risk of engineering accidents caused by insufficient pile bearing capacity, and rapidly dissipating excess pore water pressure. This can effectively avoid uneven ground settlement caused by the long-term presence of excess pore water pressure, reduce damage to surrounding buildings, underground pipelines and other facilities during construction, reduce the adverse impact of the project on the surrounding environment, and help protect the safety and stability of the surrounding environment. It also solves the problem that existing methods for dissipating excess pore water pressure, such as preloading and drainage consolidation, have limitations such as long construction cycles and unsatisfactory results. Drainage consolidation requires the installation of drainage channels such as drainage boards, but the drainage efficiency is low and it is difficult to quickly and effectively reduce excess pore water pressure, thus affecting construction efficiency. Attached Figure Description

[0013] Figure 1 This is a front-view three-dimensional structural diagram of the conical perforated pipe pile that can accelerate the dissipation of excess pore water pressure according to the present invention.

[0014] Figure 2 This is a front-view three-dimensional cross-sectional structural diagram of the conical perforated pipe pile that can accelerate the dissipation of excess pore water pressure according to the present invention.

[0015] Figure 3 This is a schematic diagram of the conical guide bucket structure of the conical perforated pipe pile that can accelerate the dissipation of excess pore water pressure according to the present invention.

[0016] Figure 4 This is a schematic diagram of the external suction and discharge pipe structure of the conical perforated pipe pile that can accelerate the dissipation of excess pore water pressure as described in this utility model.

[0017] In the diagram: 1-conical pile; 2-inner cavity; 3-dissipation perforation; 4-conical guide bucket; 5-external suction and discharge pipe; 6-connecting water hole; 7-column section; 8-reinforcing rib; 9-fixed bracket. Detailed Implementation

[0018] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] Example: Please refer to Figure 1-4A conical perforated pipe pile (1) is used to accelerate the dissipation of excess pore water pressure. The taper of the conical pile (1) is determined according to actual engineering requirements and geological conditions. For example, in some soft soil foundations, the taper can be set to 1:10 - 1:5 to better insert into the soil and reduce construction resistance. The length of the conical pile (1) depends on the design depth of the pile foundation, generally ranging from 10 to 30 meters. An inner cavity (2) is created inside the finished conical pile (1). The diameter of the inner cavity (2) is designed according to the dimensions of the conical pile (1). For example, when the diameter of the conical pile (1) is 800 mm, the diameter of the inner cavity (2) can be set to 300 - 500 mm to ensure sufficient space to accommodate pore water and install other components. Several dissipation perforations (3) are evenly distributed in a circular pattern on the conical pile (1). The diameter of the dissipation perforations (3) can be determined according to the permeability and drainage requirements of the soil, generally ranging from 50 mm to... The number of dissipation perforations 3 (150mm) is rationally distributed according to the length and diameter of the conical pile 1. Several conical guide buckets 4 are longitudinally installed on the inner wall of the inner cavity 2 at intervals of three dissipation perforations 3. The conical guide buckets 4 are made of plastic or metal and are cone-shaped, wider at the top and narrower at the bottom, to better guide pore water inflow. During installation, the conical guide buckets 4 are fixed to the inner wall of the inner cavity 2 by welding or bolting. Furthermore, according to design requirements, the diameter of the conical guide buckets 4 decreases sequentially from top to bottom. An external suction and discharge pipe 5 is longitudinally installed through the conical guide buckets 4. The external suction and discharge pipe 5 is made of plastic or steel pipe with certain strength and corrosion resistance, and its diameter is determined according to the drainage requirements, generally ranging from 100mm to... During installation, ensure a tight connection between the external suction discharge pipe 5 and the conical guide bucket 4 to prevent leakage. Install a fixing bracket 9 on the external suction discharge pipe 5. The fixing bracket 9 is made of metal and is fixed to the external suction discharge pipe 5 by welding or bolting. It is further fixed to the inner wall of the conical pile 1 or other stable structure to ensure the stability of the external suction discharge pipe 5 during construction and use. Connect the external suction discharge pipe 5 to the external negative pressure suction equipment. Open several connecting water holes 6 on the outer wall of the external suction discharge pipe 5. The diameter of the connecting water holes 6 can be set according to the drainage requirements, generally in the range of 10-50mm. The number and distribution of the connecting water holes 6 are reasonably designed according to the position of the conical guide bucket 4 and the drainage volume to ensure that the bottom of the connecting water holes 6 is located at the lowest point of the inner cavity of the conical guide bucket 4 so as to completely drain the pore water in the conical guide bucket 4.

[0020] A columnar section 7 is provided on the outer side of the upper end of the tapered pile 1. The length of the columnar section 7 is determined according to the connection requirements with the superstructure, generally ranging from 0.5 to 2 meters. The diameter of the columnar section 7 is the same as or slightly larger than the diameter of the upper end of the tapered pile 1, so as to better connect with the superstructure. The columnar section 7 can be connected to the tapered pile 1 by welding or integral molding.

[0021] Reinforcing ribs 8 are provided on the inner wall of the inner cavity 2. The reinforcing ribs 8 are made of metal and are fixed to the inner wall of the inner cavity 2 by welding. The number and distribution of the reinforcing ribs 8 are reasonably designed according to the size and stress of the inner cavity 2 to enhance the structural strength of the inner cavity 2 and prevent deformation due to stress during construction.

[0022] Work Process: Using a pile driver, the prepared conical perforated pipe piles are driven into the soft soil foundation according to the designed position and spacing. During the pile driving process, attention is paid to controlling the pile driving speed and verticality to ensure the quality and stability of the pile. The external suction and discharge pipe 5 is connected to the water pump through the connecting pipe. The sealing of the connection is checked to prevent water leakage. The water pump is started to begin pumping the pore water in the inner cavity 2. As pumping proceeds, the pore water in the soil around the pile enters the inner cavity 2 through the dissipation perforation 3, and then enters the external suction and discharge pipe 5 through the conical guide bucket 4 and the connecting water hole 6, and is finally pumped out of the pile. During the pumping process, the changes in pumping volume and excess pore water pressure are monitored in real time. The operating parameters of the water pump are adjusted according to the monitoring results. During the construction process, the bearing capacity of the pile and the settlement of the surrounding ground are monitored in real time. Through the monitoring data, the construction effect of the conical perforated pipe pile that can accelerate the dissipation of excess pore water pressure is evaluated. If any abnormalities are found, measures are taken in a timely manner for adjustment and treatment.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tapered perforated pipe pile that can accelerate the dissipation of excess pore water pressure, comprising: The cone pile (1) is characterized in that an integrated pore flow guiding and discharge water pressure dissipation structure is installed on the cone pile (1); The integrated pore flow guiding and discharge water pressure dissipation structure includes: an inner cavity (2), several dissipation perforations (3), several conical flow guiding buckets (4), an external suction and discharge pipe (5), and several connecting water holes (6). The inner cavity (2) is opened inside the conical pile (1). Several dissipation holes (3) are evenly opened in a circle on the conical pile (1). Several conical guide buckets (4) are installed longitudinally on the inner wall of the inner cavity (2) with three dissipation holes (3) at intervals. The external suction and discharge pipe (5) is installed longitudinally through the several conical guide buckets (4). Several connecting water holes (6) are opened on the outer wall of the external suction and discharge pipe (5).

2. The conical perforated pipe pile according to claim 1, which can accelerate the dissipation of excess pore water pressure, is characterized in that, A columnar section (7) is provided on the outer side of the upper end of the cone-shaped pile (1).

3. The conical perforated pipe pile according to claim 1, which can accelerate the dissipation of excess pore water pressure, is characterized in that... The inner wall of the cavity (2) is provided with reinforcing ribs (8).

4. The conical perforated pipe pile according to claim 1, which can accelerate the dissipation of excess pore water pressure, is characterized in that... The diameter of several conical guide buckets (4) decreases from top to bottom.

5. The conical perforated pipe pile according to claim 1, characterized in that, A fixed bracket (9) is installed on the external suction and discharge pipe (5).

6. The conical perforated pipe pile according to claim 1, characterized in that, The bottom of the connecting water hole (6) is located at the lowest point of the cavity inside the conical guide bucket (4).

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