A PHC pile construction method and auxiliary device

Abstract

The present invention discloses a PHC pile construction method and an auxiliary device thereof, relating to the technical field of PHC pile construction auxiliary equipment. The PHC pile construction auxiliary device includes a plurality of anti-clogging plastic drain boards laid on the construction ground, each having drainage holes formed therein. A drainage area is formed between adjacent anti-clogging plastic drain boards, a horizontal pipe is provided within the drainage area, and a plurality of negative pressure suction holes are provided on the horizontal pipe. The inlets of the negative pressure suction holes face the drainage holes of the anti-clogging plastic drain boards, and the outlet of the horizontal pipe is connected to a water pump. The present invention has a good drainage effect.

Description

Technical Field

[0001] The present invention relates to the technical field of PHC pile construction auxiliary equipment, and in particular to a PHC pile construction method and an auxiliary device thereof. Background Art

[0002] Vacuum preloading combined with PHC piles is a new foundation treatment method that combines vacuum preloading with PHC pipe pile technology. This method has the advantage of reducing settlement during construction and improving the bearing capacity of the foundation. Currently, the construction process for vacuum preloading combined with PHC piles is as follows: First, a layer of plastic drainage tape is laid on the ground. A sealing membrane is then laid over the tape, and a hole is drilled through the membrane. A vacuum pump is connected to the hole. Next, the PHC pipe pile is inserted into the hole, and concrete is poured around the pile. Finally, after the concrete has solidified, the vacuum pump and sealing membrane are removed.

[0003] During the construction of PHC piles, water accumulation in the pile hole will affect the soil saturation around the pile body, thereby affecting the bearing capacity and stability of the pile. Therefore, drainage is carried out with the help of auxiliary devices, usually by laying drainage boards on the ground, to reduce the soil saturation around the pile body and improve the bearing capacity and stability of the pile.

[0004] At present, in order to prevent soil particles from accumulating in plastic drainage boards, a sand cushion layer is needed to filter water as a horizontal drainage channel. However, the pores of the sand cushion layer are small and few in number, and are easily blocked by debris such as mud, fine soil, etc., resulting in poor drainage effect. Summary of the Invention

[0005] The present application provides a PHC pile construction method and an auxiliary device thereof, which have good drainage effect.

[0006] This application provides a PHC pile construction method and auxiliary device thereof, which adopts the following technical solutions:

[0007] An auxiliary device for PHC pile construction includes an anti-clogging plastic drainage board laid on the construction ground, wherein a plurality of the anti-clogging plastic drainage boards are provided, drainage holes are provided inside the anti-clogging plastic drainage boards, and a drainage area is formed between adjacent anti-clogging plastic drainage boards. A horizontal pipe is provided in the drainage area, and a plurality of negative pressure suction holes are provided on the horizontal pipe. The inlet of the negative pressure suction hole faces the drainage holes of the anti-clogging plastic drainage board, and the outlet of the horizontal pipe is connected to a water pump.

[0008] By adopting the above technical solution, during the PHC pile construction and drainage construction process, a pumping pipe is set between two adjacent anti-clogging plastic drainage boards and the pump is started, so that the groundwater generated during the PHC pile construction process can be quickly introduced into the pumping pipe, thereby improving the drainage efficiency. By discharging the groundwater in time, the safety and stability of the PHC pile construction process can be guaranteed, and problems such as foundation settlement and deformation can be avoided. In addition, a number of negative pressure suction holes are set on the pumping pipe towards the drainage pores of the anti-clogging plastic drainage board, which can effectively and quickly introduce the groundwater into the pumping pipe, reduce the retention time of the groundwater, and have a good drainage effect.

[0009] Preferably, the anti-clogging plastic drain board is provided with a plurality of drainage outlets connected with the drainage holes, and the plurality of drainage outlets are evenly distributed on the outer edge of the anti-clogging plastic drain board.

[0010] By adopting the above technical solution and providing a plurality of drainage outlets on the outer edge of the anti-clogging plastic drainage board, soil particles can be effectively prevented from accumulating in the plastic drainage board, thereby ensuring the drainage effect.

[0011] Preferably, the anti-clogging plastic drainage board is provided with an installation through hole for the PHC pile to pass through.

[0012] By adopting the above technical solution and providing installation through holes in the anti-clogging plastic drainage board, the PHC piles can pass through the anti-clogging plastic drainage board, thereby reducing the construction difficulty and construction period and improving the construction efficiency.

[0013] Preferably, a connector is provided on the horizontal pipe, and the connector includes a wiring pipe arranged on the outside of the anti-clogging plastic drainage board. A plurality of suction holes are provided on the wiring pipe, and the suction holes face the drainage outlet. The water inlet and outlet ends of the wiring pipe are both connected to the horizontal pipe.

[0014] By adopting the above technical solution, the wiring pipe is set on the outside of the anti-clogging plastic drainage board, which is used to absorb the accumulated water in the anti-clogging plastic drainage board in multiple directions, so that the accumulated water in the anti-clogging plastic drainage board passes through the suction hole into the horizontal pipe, thereby improving the drainage efficiency.

[0015] Preferably, an installation area is formed between the wiring pipe and the horizontal pipe, and a supporting frame is installed in the installation area.

[0016] By adopting the above technical solution and setting up a support frame, the stability of the ground can be effectively protected, and problems such as settlement and deformation of the ground due to poor drainage can be avoided.

[0017] Preferably, a positioning sleeve is provided inside the support frame, and the outer diameter of the positioning sleeve matches the inner diameter of the mounting through hole.

[0018] By adopting the above technical solution, a positioning sleeve is provided inside the support frame to maintain the pile hole and avoid soil collapse near the pile hole. The positioning sleeve is matched with the installation through hole to facilitate the positioning and installation of the positioning sleeve and the support frame.

[0019] Preferably, a rib is provided between the support frame and the positioning sleeve, and there are several ribs. One end of the rib is fixedly connected to the inner ring of the support frame, and the other end of the rib is fixedly connected to the outer surface of the positioning sleeve. Several water-permeable holes are provided inside the rib.

[0020] By adopting the above technical solution, several ribs can effectively reinforce the support frame and the positioning sleeve. The ribs perpendicular to the ground can increase the friction between the soil and the anti-clogging plastic drainage board, prevent the soil from being lost due to water erosion, and protect the stability of the ground. Several water-permeable holes are provided inside the ribs, which can increase the porosity of the anti-clogging plastic drainage board, improve drainage efficiency, and reduce the risk of ground water accumulation.

[0021] Preferably, a guide reinforcement sleeve is provided inside the positioning sleeve, the guide reinforcement sleeve passes through the interior of the positioning sleeve, and the top of the guide reinforcement sleeve is provided with an outer eaves, and the lower surface of the outer eaves is provided with an annular groove for the top of the positioning sleeve to pass through.

[0022] By adopting the above technical solution, the guide reinforcement sleeve is installed in the positioning sleeve. By providing the guide reinforcement sleeve, the installation deviation of the PHC pile can be reduced, the construction efficiency can be improved, and the construction period and cost can be saved. The guide reinforcement sleeve can guide the PHC pile to the correct position, thereby improving the verticality of the pile body and ensuring that the verticality of the pile meets the design requirements.

[0023] Preferably, a plurality of reinforcement strips are provided inside the guide reinforcement sleeve. The reinforcement strips are made of flexible material and are symmetrically arranged around the central axis of the guide reinforcement sleeve. The axis of the reinforcement strips is oriented toward the center of the guide reinforcement sleeve.

[0024] By adopting the above technical solution, when the PHC pile passes through the guide reinforcement sleeve, the reinforcement strip will stick to the outer wall of the PHC pile, which increases the friction between the reinforcement strip and the PHC pile, thereby slowing down the descent speed of the PHC pile and preventing the bottom of the PHC pile from being damaged by impact.

[0025] Preferably, a construction method using the above-mentioned PHC pile construction auxiliary device comprises the following construction steps:

[0026] S1: Determine the location of the pile hole at the construction site through line measurement and obtain the drainage area outside the pile hole;

[0027] S2: Laying a wiring conduit in the drainage area with the suction hole facing the pile hole, and connecting both ends of the wiring conduit to the horizontal conduit to form a fully enclosed pipeline between the horizontal conduit and the wiring conduit. The inner side of the fully enclosed pipeline and the outer side of the pile hole form a reinforced area.

[0028] S3: Place the support frame in the reinforcement area and align the positioning sleeve in the support frame with the pile hole;

[0029] S4: Then install the anti-clogging plastic drainage board on the upper surface of the support frame, and make the pile hole and the installation through hole coincide with each other;

[0030] S5: Install the guide reinforcement sleeve in the installation through hole, so that the guide reinforcement sleeve passes through the installation through hole, the positioning sleeve and the pile hole from top to bottom, until the outer edge is stuck on the top of the positioning sleeve, and finally start the water pump to extract the groundwater in the pile hole;

[0031] S6: Insert the PHC pile into the guide reinforcement sleeve and inject concrete between the outer wall of the PHC pile and the inner wall of the guide reinforcement sleeve. After the concrete solidifies, build a support plate steel cage skeleton inside the PHC pile at a distance of 3-4m from the top of the pile head.

[0032] S7: The ends of the completed PHC piles are grout-injected through sleeve valve pipes, and a cement-soil cushion layer is laid and compacted. The steel bars extending from the support plate steel cage frame and the cement-soil cushion layer form a stable overall structure.

[0033] By adopting the above technical solution and the above auxiliary device to realize the construction of PHC piles, the entire construction process is made more efficient, not only enhancing the stability of the PHC piles during construction, but also quickly draining the groundwater in the pile hole, thereby reducing the soil saturation around the PHC pile body and improving the bearing capacity and stability of the PHC piles.

[0034] In summary, this application has the following beneficial effects:

[0035] 1. The PHC pile construction auxiliary device, by setting a pumping pipe between two adjacent anti-clogging plastic drain boards and starting the pumping pump, can quickly introduce groundwater generated during the PHC pile construction process into the pumping pipe, thereby improving drainage efficiency. By timely draining groundwater, the safety and stability of the PHC pile construction process can be ensured, and problems such as foundation settlement and deformation can be avoided. In addition, the pumping pipe is provided with a number of negative pressure suction holes facing the drainage holes of the anti-clogging plastic drain boards, which can effectively and quickly introduce groundwater into the pumping pipe, reducing the retention time of groundwater and achieving good drainage effect.

[0036] 2. By adopting auxiliary devices to realize the construction of PHC piles, the entire construction process is made more efficient. It not only enhances the stability of the PHC piles during construction, but also can quickly discharge the groundwater in the pile hole, thereby reducing the soil saturation around the PHC pile body and improving the bearing capacity and stability of the PHC pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 Schematic diagram of the overall structure of the auxiliary device for PHC pile construction in this embodiment;

[0038] Figure 2 Schematic diagram of the internal structure of the connector in this embodiment;

[0039] Figure 3 This is a schematic diagram of the overall structure of the anti-clogging plastic drainage board in this embodiment;

[0040] Figure 4 This is an exploded view of the wiring duct and the support frame in this embodiment;

[0041] Figure 5 is an exploded view of the auxiliary device for PHC pile construction in this embodiment;

[0042] Figure 6 Schematic diagram of the connection structure between the guide reinforcement sleeve and the positioning sleeve in this embodiment;

[0043] Figure 7 Schematic diagram of the overall structure of the guide reinforcement sleeve in this embodiment;

[0044] Figure 8 Schematic diagram of the connection structure between the reinforcement strip and the guide reinforcement sleeve in this embodiment;

[0045] Figure 9 is a cross-sectional view of the guide reinforcement sleeve in this embodiment;

[0046] Explanation of the accompanying symbols: 1. Anti-clogging plastic drainage board; 2. Horizontal pipe; 3. Water pump; 4. Negative pressure suction hole; 5. Drainage outlet; 6. Mounting through hole; 7. Connector; 701. Wiring pipe; 702. Suction hole; 8. Support frame; 9. Positioning sleeve; 10. Ridge; 11. Water-permeable hole; 12. Guide reinforcement sleeve; 13. Outer eaves; 14. Annular groove; 15. Reinforcement strip; 16. Material guide trough. DETAILED DESCRIPTION

[0047] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0048] Embodiment: The present invention discloses a PHC pile construction method and auxiliary device thereof, such as Figure 1 and Figure 2 As shown, an auxiliary device for PHC pile construction includes an anti-clogging plastic drainage board 1 laid on the construction ground, wherein the anti-clogging plastic drainage board 1 is provided with several drainage holes inside the anti-clogging plastic drainage board 1, and a drainage area is formed between adjacent anti-clogging plastic drainage boards 1, and a horizontal pipe 2 is provided in the drainage area. The horizontal pipe 2 is provided with several negative pressure suction holes 4, and the inlet of the negative pressure suction hole 4 faces the drainage holes of the anti-clogging plastic drainage board 1, and the outlet of the horizontal pipe 2 is connected to a pumping pump 3; during the drainage construction of the PHC pile, a pumping pipe is provided between two adjacent anti-clogging plastic drainage boards 1, and the pumping pump 3 is started, so that the groundwater generated during the construction of the PHC pile can be quickly introduced into the pumping pipe, thereby improving the drainage efficiency. By discharging the groundwater in time, the safety and stability of the PHC pile construction process can be guaranteed, and problems such as foundation settlement and deformation can be avoided. In addition, the pumping pipe is provided with several negative pressure suction holes 4 facing the drainage holes of the anti-clogging plastic drainage board 1, which can effectively and quickly introduce the groundwater into the pumping pipe, thereby reducing the retention time of the groundwater and achieving good drainage effect.

[0049] like Figure 3 As shown, the anti-clogging plastic drain board 1 is provided with a plurality of drainage outlets 5 connected with the drainage pores, and the plurality of drainage outlets 5 are evenly distributed on the outer edge of the anti-clogging plastic drain board 1; by providing a plurality of drainage outlets 5 on the outer edge of the anti-clogging plastic drain board 1, soil particles can be effectively prevented from accumulating in the plastic drain board, thereby ensuring the drainage effect; the interior of the anti-clogging plastic drain board 1 is provided with an installation through-hole 6 for the PHC pile to pass through; by providing the installation through-hole 6 in the anti-clogging plastic drain board 1, the PHC pile can pass through the anti-clogging plastic drain board 1, reducing the construction difficulty and construction period, and improving the construction efficiency; and the installation through-hole 6 is preset in the anti-clogging plastic drain board 1, which can effectively avoid the traditional drilling method from damaging the anti-clogging plastic drain board 1, thereby extending the service life of the anti-clogging plastic drain board 1. In addition, by adopting the installation through-hole 6, the passing position of the PHC pile can be ensured to be accurate, thereby improving the project quality.

[0050] like Figure 2As shown, a connector 7 is provided on the horizontal pipe 2, and the connector 7 includes a wiring pipe 701 arranged on the outside of the anti-clogging plastic drain board 1, and a plurality of suction holes 702 are provided on the wiring pipe 701. The suction holes 702 face the drainage outlet 5, and the water inlet and outlet ends of the wiring pipe 701 are both connected to the horizontal pipe 2; the wiring pipe 701 is arranged on the outside of the anti-clogging plastic drain board 1, and is used for multi-directional absorption of the accumulated water in the anti-clogging plastic drain board 1, so that the accumulated water in the anti-clogging plastic drain board 1 passes through the suction holes 702 and enters the horizontal pipe 2, thereby improving the drainage efficiency.

[0051] like Figure 4 As shown, an installation area is formed between the wiring pipe 701 and the horizontal pipe 2, and a support frame 8 is installed in the installation area; by setting the support frame 8, the stability of the ground can be effectively protected, and the ground can be prevented from settling and deforming due to poor drainage; and the support frame 8 can enhance the load-bearing capacity and stability of the anti-clogging plastic drainage board 1, ensuring that it will not be deformed or damaged during use, and it can avoid the accumulation of mud and debris under the anti-clogging plastic drainage board 1, ensuring smooth drainage and improving drainage efficiency; in addition, the anti-clogging plastic drainage board 1 using the support frame 8 can be convenient for construction workers to carry and install, reducing construction difficulty and labor intensity; a positioning sleeve 9 is provided inside the support frame 8, and the outer diameter of the positioning sleeve 9 matches the inner diameter of the installation through hole 6; by providing a positioning sleeve 9 inside the support frame 8 for maintaining the pile hole, avoiding To prevent soil collapse near the pile hole, the positioning sleeve 9 is matched with the installation through-hole 6 to facilitate the positioning and installation of the positioning sleeve 9 and the support frame 8; a rib 10 is provided between the support frame 8 and the positioning sleeve 9, and there are several ribs 10, and one end of the rib 10 is fixedly connected to the inner circle of the support frame 8, and the other end of the rib 10 is fixedly connected to the outer surface of the positioning sleeve 9. A plurality of water-permeable holes 11 are provided inside the rib 10. Several ribs 10 can effectively reinforce the support frame 8 and the positioning sleeve 9. The ribs 10 perpendicular to the ground can increase the friction between the soil and the anti-clogging plastic drainage board 1, avoid soil loss due to water erosion, and protect the stability of the ground. The rib 10 is provided with several water-permeable holes 11, which can increase the porosity of the anti-clogging plastic drainage board 1, improve drainage efficiency, and reduce the risk of ground water accumulation.

[0052] like Figure 5 、 Figure 6 and Figure 7As shown, a guide reinforcement sleeve 12 is provided inside the positioning sleeve 9, and the guide reinforcement sleeve 12 passes through the interior of the positioning sleeve 9, and the top of the guide reinforcement sleeve 12 is provided with an outer eaves 13, and the lower surface of the outer eaves 13 is provided with an annular groove 14 for the top of the positioning sleeve 9 to pass through; the guide reinforcement sleeve 12 is installed in the positioning sleeve 9. By providing the guide reinforcement sleeve 12, the installation deviation of the PHC pile can be reduced, the construction efficiency can be improved, and the construction period and cost can be saved. The guide reinforcement sleeve 12 can guide the PHC pile to the correct position, thereby improving the verticality of the pile body and ensuring that the verticality of the pile meets the design requirements; by installing the guide reinforcement sleeve 12, the deformation of the PHC pile can be effectively controlled, the bearing capacity of the pile can be improved, and the safety and stability of the pile can be guaranteed.

[0053] like Figure 8 As shown, a plurality of reinforcing strips 15 are provided inside the guide reinforcing sleeve 12. The material of the reinforcing strips 15 is rubber. The reinforcing strips 15 are symmetrically arranged around the central axis of the guide reinforcing sleeve 12, and the axis of the reinforcing strips 15 is oriented toward the center of the guide reinforcing sleeve 12. When the PHC pile passes through the guide reinforcing sleeve 12, the reinforcing strips 15 will cling to the outer wall of the PHC pile, thereby increasing the friction between the reinforcing strips 15 and the PHC pile, thereby slowing down the descending speed of the PHC pile and preventing the bottom of the PHC pile from being damaged by impact. 5 can fix the position of the PHC pile to prevent the pile body from displacement, offset and other problems when pouring mortar in the later stage, ensuring that the verticality of the pile body meets the design requirements. In addition, the reinforcement strip 15 can promote the filling of mortar. When filling the mortar, the reinforcement strip 15 can push the mortar to the outside of the pile body, making the mortar filling more compact, thereby improving the bearing capacity and stability of the pile. Furthermore, the reinforcement strip 15 can prevent the mortar from seeping out. The mortar will gradually solidify over time. The reinforcement strip 15 can prevent the mortar from seeping out during the solidification process, thereby ensuring the quality and reliability of the mortar filling.

[0054] like Figure 9 As shown, a guide trough 16 is provided on the upper surface of the reinforcement strip 15. The guide trough 16 can guide the concrete slurry to fall along the reinforcement strip 15, so that the pile body remains vertical during the sinking process, effectively controlling the displacement and deformation of the pile, and the guide trough 16 can increase the contact area between the concrete slurry and the reinforcement strip 15, improve the adhesion of the concrete slurry, and strengthen the bonding force between the PHC pile and the soil. Moreover, the guide trough 16 can improve the fluidity of the concrete slurry, avoid the concrete slurry from dispersing or splashing during the falling process, and improve construction efficiency.

[0055] A construction method using the above-mentioned PHC pile construction auxiliary device, the construction steps of which include:

[0056] S1: Determine the location of the pile hole at the construction site through line measurement and obtain the drainage area outside the pile hole;

[0057] S2: Laying out the wiring conduit 701 in the drainage area with the suction hole 702 facing the pile hole, and connecting both ends of the wiring conduit 701 to the horizontal conduit 2, so that a fully enclosed pipeline is formed between the horizontal conduit 2 and the wiring conduit 701, and the inner side of the fully enclosed pipeline and the outer side of the pile hole form a reinforced area;

[0058] S3: Place the support frame 8 in the reinforced area and align the positioning sleeve 9 in the support frame 8 with the pile hole; this can ensure the accurate position of the pile hole, avoid displacement and offset of the pile body during construction, ensure that the verticality of the pile body meets the design requirements, and improve the bearing capacity and stability of the pile. The positioning sleeve 9 can simplify the construction process, reduce construction difficulty and construction period, save project costs, and through the use of the positioning sleeve 9, the water level in the pile hole can be lowered, the construction difficulty and labor intensity can be reduced, and the construction efficiency can be improved.

[0059] S4: Then install the anti-clogging plastic drainage board 1 on the upper surface of the support frame 8, and make the pile hole and the installation through hole 6 coincide with each other; by adopting the installation through hole 6, the construction process can be simplified, the labor intensity and construction difficulty of the construction workers can be reduced, and the construction efficiency can be improved.

[0060] S5: Install the guide reinforcement sleeve 12 in the installation through hole 6, so that the guide reinforcement sleeve 12 passes through the installation through hole 6, the positioning sleeve 9 and the pile hole from top to bottom, until the outer edge 13 is stuck on the top of the positioning sleeve 9, and finally start the water pump 3 to extract the groundwater in the pile hole;

[0061] S6: insert the PHC pile into the guide reinforcement sleeve 12, and inject concrete between the outer wall of the PHC pile and the inner wall of the guide reinforcement sleeve 12. After the concrete solidifies, a support plate steel cage skeleton is built into the PHC pile at a distance of 3m from the top of the pile head;

[0062] S7: Grouting treatment is performed on the ends of the completed PHC piles through sleeve valve pipes to expand the pile head, increase the soil strength, and ensure the bearing capacity of the PHC piles. A cement-soil cushion layer is laid and compacted, and the steel bars extending through the support plate steel cage frame and the cement-soil cushion layer form a stable overall structure.

[0063] By adopting the above-mentioned auxiliary device to realize the construction of PHC piles, the entire construction process is made more efficient, which not only enhances the stability of the PHC piles during construction, but also can quickly drain the groundwater in the pile hole, thereby reducing the soil saturation around the PHC pile body and improving the bearing capacity and stability of the PHC piles.

[0064] Working Principle: Before using the auxiliary device, the user first places the wiring conduit 701 outside the pile hole. At this time, the suction hole 702 faces the hole mouth of the pile hole, forming a fully enclosed pipeline between the horizontal pipe 2 and the wiring conduit 701. The inner side of the fully enclosed pipeline and the outer side of the pile hole form a reinforced area.

[0065] Then place the support frame 8 in the reinforcement area, and align the positioning sleeve 9 in the support frame 8 with the pile hole; install the anti-clogging plastic drainage board 1 on the upper surface of the support frame 8, and make the pile hole and the installation through hole 6 coincide with each other; then install the guide reinforcement sleeve 12 in the installation through hole 6, so that the guide reinforcement sleeve 12 passes through the installation through hole 6, the positioning sleeve 9 and the pile hole from top to bottom in sequence until the outer eaves 13 is stuck on the top of the positioning sleeve 9.

[0066] When in use, the user first starts the power supply of the water pump 3, so that the interior of the horizontal pipe 2 and the wiring pipe 701 is in a negative pressure state, which is used to extract groundwater in the drainage area. Since a plurality of negative pressure suction holes 4 and suction holes 702 are provided, the drainage efficiency during the PHC pile construction process is improved;

[0067] During the process of groundwater spraying out of the pile hole, the groundwater will drip onto the anti-clogging plastic drainage board 1. The anti-clogging plastic drainage board 1 adopts the FDPS-B type anti-clogging plastic drainage board 1. This type of drainage board adopts a new material that is a special filter membrane and a core plate that are hot-melted into one. It has good permeability and effectively overcomes the blockage caused by sediment passing through the filter membrane. The groundwater will pass through the anti-clogging plastic drainage board 1 into the support frame 8 and be discharged into the drainage area along the water-permeable hole 11, which can effectively prevent sediment from clogging the negative pressure suction hole 4 and the suction hole 702.

[0068] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An auxiliary device for PHC pile construction, comprising an anti-clogging plastic drainage board (1) laid on the construction ground, characterized in that: The anti-clogging plastic drain plates (1) are provided with a plurality of them, drainage holes are provided inside the anti-clogging plastic drain plates (1), a drainage area is formed between adjacent anti-clogging plastic drain plates (1), a horizontal pipe (2) is provided in the drainage area, a plurality of negative pressure suction holes (4) are provided on the horizontal pipe (2), the inlet of the negative pressure suction hole (4) faces the drainage hole of the anti-clogging plastic drain plate (1), and the outlet of the horizontal pipe (2) is connected to a water pump (3); The anti-clogging plastic drain board (1) is provided with a plurality of drainage outlets (5) connected to the drainage holes, and the plurality of drainage outlets (5) are evenly distributed on the outer edge of the anti-clogging plastic drain board (1); The anti-clogging plastic drainage board (1) is provided with a mounting through hole (6) for the PHC pile to pass through. The horizontal pipe (2) is provided with a connector (7), the connector (7) comprising a wiring pipe (701) provided on the outside of the anti-clogging plastic drainage board (1), the wiring pipe (701) being provided with a plurality of suction holes (702), the suction holes (702) facing the drainage outlet (5), and the water inlet end and the water outlet end of the wiring pipe (701) being both in communication with the horizontal pipe (2); An installation area is formed between the wiring duct (701) and the horizontal duct (2), and a support frame (8) is installed in the installation area; A positioning sleeve (9) is provided inside the support frame (8), and the outer diameter of the positioning sleeve (9) matches the inner diameter of the mounting through hole (6); A rib (10) is provided between the support frame (8) and the positioning sleeve (9), and a plurality of ribs (10) are provided. One end of the rib (10) is fixedly connected to the inner ring of the support frame (8), and the other end of the rib (10) is fixedly connected to the outer surface of the positioning sleeve (9). A plurality of water-permeable holes (11) are provided inside the rib (10).

2. The auxiliary device for PHC pile construction according to claim 1, characterized in that: A guide reinforcement sleeve (12) is provided inside the positioning sleeve (9), and the guide reinforcement sleeve (12) passes through the interior of the positioning sleeve (9). The top of the guide reinforcement sleeve (12) is provided with an outer eaves (13), and the lower surface of the outer eaves (13) is provided with an annular groove (14) for the top of the positioning sleeve (9) to pass through.

3. The auxiliary device for PHC pile construction according to claim 2, characterized in that: A plurality of reinforcement strips (15) are provided inside the guide reinforcement sleeve (12). The reinforcement strips (15) are made of flexible material and are symmetrically arranged around the central axis of the guide reinforcement sleeve (12). The axis of the reinforcement strips (15) is oriented toward the central position of the guide reinforcement sleeve (12).

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