Low-carbon high-strength prefabricated solid tubular pile for replacing cast-in-situ bored pile

Abstract

The invention relates to the technical field of constructional engineering, in particular to a low-carbon high-strength prefabricated solid tubular pile for replacing a cast-in-situ bored pile. The device comprises a prefabricated pipe pile, the outer portion of the prefabricated pipe pile is rotationally connected with a rotating rod, and the end, away from the prefabricated pipe pile, of the rotating rod is rotationally connected with a screw. According to the device, through collaborative design of multiple assemblies, convenience and accuracy of pipe pile installation and angle adjustment are remarkably improved, meanwhile, auxiliary positioning of a standard installation angle is provided for an embedded body through design of a splicing disc of the fourth assembly, subjective errors of manual operation are avoided, the installation process is greatly simplified, the labor cost is reduced, and the installation efficiency is improved. The engineering construction efficiency is improved, and different outdoor scene requirements can be quickly met; all the components are made of high-strength, corrosion-resistant and wear-resistant high-quality materials, and key parts are subjected to special protection treatment, so that the influence of external factors such as soil erosion and external force impact can be effectively resisted, and the subsequent maintenance frequency and cost are reduced.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, and more specifically, to low-carbon, high-strength precast solid pipe piles for use as alternatives to bored cast-in-place piles. Background Technology

[0002] In various engineering construction fields, pipe piles serve as important load-bearing and fixing components, with a wide range of applications and a direct impact on project quality and safety. Traditional bored piles often face numerous intractable problems during construction, becoming key factors restricting project efficiency and quality.

[0003] First, the installation and angle adjustment of traditional pipe piles heavily rely on manual operation. Operators need to repeatedly adjust the piles based on their own experience, which is not only cumbersome and time-consuming, but also makes it difficult to guarantee the accuracy of the adjustments. In practical applications, the fixing effect of pipe piles is closely related to the angle at which the ground nails are embedded in the ground. A suitable angle can maximize the stability of the pipe piles, but traditional methods lack unified operating standards and effective auxiliary tools. Operators rely solely on their senses to hammer the ground nails, resulting in large errors in the embedding angle of the ground nails, failing to achieve the ideal fixing state, and thus affecting the stability of the entire structure.

[0004] Secondly, traditional pipe piles have poor environmental adaptability and are unable to cope with complex and ever-changing outdoor scenarios and real-time environmental conditions. Under the influence of different environmental factors such as wind speed and humidity, pipe piles need to adjust their angle in a timely manner to maintain stability. However, manual adjustment is slow to respond and cannot quickly adapt to environmental changes, making pipe piles prone to loosening and tilting in harsh environments, which seriously threatens their safety.

[0005] Furthermore, traditional pipe piles also have many shortcomings in material selection and production processes. Some pipe piles use materials with insufficient strength, making them unable to withstand large loads, and their corrosion and wear resistance is weak, making them susceptible to rainwater and soil erosion in outdoor environments, thus shortening their service life. At the same time, the production process of traditional pipe piles is often energy-intensive, and the maintenance methods are not environmentally friendly, failing to align with the current concept of low-carbon development. During construction, traditional drilled cast-in-place piles may also damage the surrounding soil structure, impacting the ecological environment, and the construction cycle is long, failing to meet the demands of modern engineering for efficient and environmentally friendly construction. These problems are intertwined, making traditional pipe piles unable to meet the comprehensive requirements of convenience, stability, and environmental protection in modern engineering construction, urgently necessitating a new type of pipe pile structure to overcome these deficiencies. Summary of the Invention

[0006] This invention provides a low-carbon, high-strength precast solid pipe pile for replacing bored cast-in-place piles, comprising a precast pipe pile, a rotating rod rotatably connected to the outside of the precast pipe pile, a screw rod rotatably connected to the end of the rotating rod away from the precast pipe pile, a first component disposed outside the screw rod, the first component comprising an insert and a multi-hole adapter, the insert being insertable into a hole on the multi-hole adapter; the first component further comprises chambers A, B, and C formed in the cavity of the insert, the inner diameters of chambers A, B, and C gradually decreasing from top to bottom, and being sequentially distributed and interconnected.

[0007] According to one embodiment of the present invention, the first component further includes a telescopic rod, and an air inlet is symmetrically and through the middle of the insert, the air inlet being located at the location of chamber B, and an air outlet is symmetrically and through the bottom of the insert, the air outlet being located at the location of chamber C.

[0008] According to one embodiment of the present invention, a second component is further provided on the outside of the screw, the second component being used to adjust the inclination of the rotating rod according to the environment.

[0009] According to one embodiment of the present invention, the second component includes a limiting cavity symmetrically fixed within a chamber A, a vertical rod slidably connected within the limiting cavity, a cylindrical member fixedly connected to the top of the vertical rod, the cylindrical member being vertically slidably connected within the chamber A, and a telescopic rod fixedly connected to the bottom of the cylindrical member.

[0010] According to one embodiment of the present invention, a third component is included for maintaining the stability of the rotating rod after the angle of the rotating rod changes; the third component includes a magnet fixedly connected to the bottom of the inner cavity of the confining cavity, the inner cavity of the confining cavity having different inner diameters of chamber A and chamber B, and the junction forming a junction with different inclined surfaces, and a ring is slidably connected inside chamber B; an elastic sealing plate is symmetrically fixedly connected to the bottom surface of the ring, and the elastic sealing plate has through holes equidistantly opened.

[0011] According to one embodiment of the present invention, a fourth component is further included for increasing the stability of the embedding body on the ground. The fourth component includes a splicing plate A and a splicing plate B on the periphery of the embedding body. The splicing plate A has a locking groove, and the splicing plate B also has a matching locking groove. Cards are symmetrically fixedly connected to the periphery of the embedding body.

[0012] According to one embodiment of the present invention, the splicing plate A and splicing plate B are provided with holes.

[0013] According to one embodiment of the present invention, the outer diameter of the telescopic end of the telescopic rod is adapted to the inner diameter of the chamber B, and guide posts are symmetrically arranged on the inner ring wall of the chamber C.

[0014] According to one embodiment of the present invention, the precast pipe pile includes reinforcing bars and concrete, the protective layer thickness of the reinforcing bars is 50 mm, the reinforcing bars are threaded reinforcing bars and are subjected to low prestress, the low prestress is 30% of the tensile strength of the reinforcing bars, and the strength grade of the concrete is C60, C80 or C100.

[0015] According to one embodiment of the present invention, the precast pipe pile is formed by mechanical pile driving and cured using hot water at 40~50℃ generated by photovoltaic solar energy.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. This invention significantly improves the convenience and accuracy of pipe pile installation and angle adjustment through a multi-component collaborative design. Traditional pipe piles rely on manual experience for angle adjustment, which is cumbersome and prone to errors. This invention, however, utilizes various sensors on the embedded body to monitor environmental parameters in real time. Combined with the automatic adjustment function of the second component, it achieves rapid and precise adjustment of the rotating rod's tilt angle without frequent manual intervention. Simultaneously, the splicing plate design of the fourth component provides auxiliary positioning for the embedded body at a standard installation angle, avoiding subjective errors from manual operation, greatly simplifying the installation process, reducing labor costs, improving construction efficiency, and enabling rapid adaptation to different outdoor scene requirements.

[0018] 2. In this invention, the chamber structure of the first component, the coordination of the telescopic rod and the air vent, effectively prevents impurities from entering and gas turbulence from occurring, ensuring the stable operation of the internal components. The second component can adjust its angle in real time according to environmental changes, keeping the pipe pile in an optimal stress state at all times. The third component, through structures such as magnetic adsorption and inclined surface limiting, ensures the stability of the rotating rod after angle adjustment, avoiding displacement due to environmental fluctuations. The splicing plate and auxiliary ground nail design of the fourth component further increase the connection strength with the ground, disperse the stress, and maintain good fixation even in harsh environments. The various components work together to form a comprehensive stability guarantee system, significantly improving the adaptability and service life of the pipe pile in complex and changing environments.

[0019] 3. In this invention, the precast pipe piles utilize low-carbon concrete and high-strength threaded steel bars, reducing carbon emissions while ensuring strength. Mechanical pile driving is employed during production, and curing relies on hot water generated from photovoltaic solar energy, eliminating the need for large amounts of traditional energy and resulting in significant energy savings and environmental benefits. Furthermore, all components are made from high-strength, corrosion-resistant, and wear-resistant materials, and key parts undergo special protective treatment, effectively resisting the impact of soil erosion, external forces, and other external factors, reducing subsequent maintenance frequency and costs. The overall structural design is scientifically sound and reasonable, achieving efficient and stable use while minimizing negative environmental impacts, thus meeting the low-carbon and sustainable development requirements of modern engineering construction. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 The diagram shows the relevant structures of splicing disk A, splicing disk B, and embedding body of this invention.

[0022] Figure 3 This is a diagram showing the misalignment of the through holes and vents in this invention.

[0023] Figure 4 This is a structural diagram of the internal structure of the embedding in this invention;

[0024] Figure 5 This is an initial diagram of the inflation state in this invention;

[0025] Figure 6 These are structural diagrams of splicing disk A, splicing disk B, and the embedded body of the present invention;

[0026] Figure 7 This is a diagram illustrating the inflation process in this invention;

[0027] Figure 8 This is a structural diagram of the limiting cavity, vertical rod, cylindrical component, and magnet in this invention;

[0028] Figure 9 This is a diagram showing the initial overlap of the through hole and the vent hole in this invention.

[0029] Figure 10 This is a diagram showing the adjustment state of the rotating rod in this invention.

[0030] The meanings of the labels in the diagram are as follows:

[0031] 1. Precast pipe piles; 2. Rotating rods;

[0032] 3. First component; 301. Embedded body; 302. Chamber A; 303. Chamber B; 304. Chamber C; 305. Telescopic rod; 306. Air inlet; 307. Air outlet; 308. Multi-port adapter;

[0033] 4. Screw;

[0034] 5. Second component; 501. Restricting cavity; 502. Vertical rod; 503. Cylindrical component;

[0035] 6. Third component; 601. Magnet; 602. Angled surface; 603. Ring; 604. Elastic sealing piece; 605. Through hole;

[0036] 7. Fourth component; 701. Splicing plate A; 702. Splicing plate B; 703. Card slot; 704. Card. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] This invention provides low-carbon, high-strength precast solid pipe piles for replacing bored cast-in-place piles, see [link to relevant documentation]. Figure 1 - Figure 6 As shown, the assembly includes a precast pipe pile 1, a rotating rod 2 rotatably connected to the outside of the precast pipe pile 1, a screw 4 rotatably connected to the end of the rotating rod 2 away from the precast pipe pile 1, and a first component 3 disposed outside the screw 4. The first component 3 includes an insert 301 and a multi-hole adapter 308. The insert 301 can be inserted into the hole on the multi-hole adapter 308. The first component 3 also includes chambers A302, B303, and C304 opened in the inner cavity of the insert 301. The inner diameters of chambers A302, B303, and C304 gradually decrease from top to bottom and are distributed sequentially and interconnected. The insert 301 is made of high-strength, wear-resistant alloy steel with a rust-proof surface treatment, capable of withstanding the impact of embedding into the ground and the friction of the soil, ensuring it is not easily damaged in complex soil environments. The multi-hole adapter 308 can be made of high-strength engineering plastic or lightweight alloy, and its internal one-way ventilation structure allows only one-way gas flow, preventing soil, moisture, and other impurities from entering the device. The insert 301 can be inserted into the holes on the multi-hole adapter 308 to achieve a precise fit. A wind speed sensor, a humidity sensor, and a distance sensor are installed on the upper outer ring surface of the insert 301.

[0039] According to one embodiment of the present invention, the first component 3 further includes a telescopic rod 305, an air inlet 306 symmetrically extending through the middle of the insert 301, the air inlet 306 being located at the location of chamber B303, and an air outlet 307 symmetrically extending through the bottom of the insert 301, the air outlet 307 being located at the location of chamber C304. The outer diameter of the telescopic end of the telescopic rod 305 is adapted to the inner diameter of chamber B303. In the non-inflated state, the air inlet 306 is blocked by the telescopic rod 305, which can effectively ensure that soil will not enter the chamber of the insert 301 when the insert 301 is driven into the ground; the multi-hole adapter 308 can only allow unidirectional gas flow; the inner diameters of chambers A302, B303, and C304 gradually decrease from top to bottom and are distributed sequentially and interconnected.

[0040] According to one embodiment of the present invention, see Figure 4 and Figure 5As shown, a second component 5 is also provided on the outside of the screw 4. The second component 5 is used to adjust the tilt of the rotating rod 2 according to the environment.

[0041] The second component 5 includes a limiting cavity 501 symmetrically fixed within chamber A302. A vertical rod 502 is slidably connected within the limiting cavity 501. A cylindrical member 503 is fixedly connected to the top of the vertical rod 502. The cylindrical member 503 is vertically slidably connected within chamber A302. A telescopic rod 305 is fixedly connected to the bottom of the cylindrical member 503. The cylindrical member 503 can be made of metal or high-strength engineering plastic. Its outer diameter is precisely matched to the inner diameter of chamber A302, allowing it to slide stably vertically within chamber A302. The telescopic rod 305 is fixedly connected to the bottom of the cylindrical member 503, enabling it to extend and retract as the cylindrical member 503 moves.

[0042] According to one embodiment of the present invention, see Figure 7 - Figure 10 As shown, a third component 6 is included to maintain the stability of the rotating rod 2 after the angle of the rotating rod 2 changes. The third component 6 includes a magnet 601 fixedly connected to the bottom of the inner cavity of the limiting cavity 501. The inner cavity of the embedding body 301 has different inner diameters between the cavity A302 and the cavity B303, and a junction with different inclined surfaces is formed at the junction. A ring 603 is slidably connected inside the cavity B303. An elastic sealing plate 604 is symmetrically fixedly connected to the bottom surface of the ring 603. Through holes 605 are equidistantly opened on the elastic sealing plate 604. The inclined surface 602 is used to limit the continued extension and retraction of the telescopic rod 305. Guide posts are symmetrically arranged on the inner ring wall of the cavity C304 to limit the vertical movement of the ring 603. The elastic sealing plate 604 is made of high-quality silicone material, which has good elasticity and wear resistance. Under non-compression conditions, it can recover to its initial state through its own elastic potential energy, that is, the through hole 605 on it coincides with the vent 307. Through holes 605 are equidistantly formed on the elastic sealing plate 604, with the diameter matching the vent hole 307 to achieve gas flow and blockage. Guide posts, made of metal, are symmetrically arranged on the inner ring wall of chamber C304 and are fixedly connected to chamber C304 to guide and restrict the vertical movement of the ring 603, ensuring its stable sliding trajectory.

[0043] According to one embodiment of the present invention, a fourth component 7 is further included for increasing the stability of the insert 301 on the ground. The fourth component 7 includes a splicing plate A701 and a splicing plate B702 on the outer periphery of the insert 301. The splicing plate A701 is provided with a locking groove 703, and the splicing plate B702 is also provided with a matching locking groove 703. Cards 704 are symmetrically fixedly connected to the outer periphery of the insert 301. Interlocking plates A701 and B702 have holes for fixing the precast pipe pile 1 by driving the ground stake auxiliary insert 301 into the holes in harsh environments. The shapes of interlocking plates A701 and B702 can be selected according to specific usage scenarios. For example, when used at the four corners of a tent, they can be replaced with rectangular interlocking assemblies. Interlocking plates A701 and B702 with different inclinations can be selected according to specific environmental conditions, such as degrees of inclination, to effectively ensure that the insert 301 driven into the ground is at a standard fixed angle. The premise of this standard angle judgment is that the insert 301 is driven into the ground and the ground stake piece composed of interlocking plates A701 and B702 is parallel and close to the ground.

[0044] According to one embodiment of the present invention, holes are provided on splicing plate A701 and splicing plate B702.

[0045] According to one embodiment of the present invention, the outer diameter of the telescopic end of the telescopic rod 305 is adapted to the inner diameter of the chamber B303, and guide posts are symmetrically arranged on the inner ring wall of the chamber C304.

[0046] According to one embodiment of the present invention, the precast pipe pile 1 includes steel bars and concrete. The protective layer thickness of the steel bars is 50 mm. The steel bars are threaded steel bars and are subjected to low prestress. The low prestress is 30% of the tensile strength of the steel bars. The strength grade of the concrete is C60, C80 or C100.

[0047] According to one embodiment of the present invention, the precast pipe pile 1 is formed by mechanical pile driving and is cured using hot water at 40~50℃ generated by photovoltaic solar energy.

[0048] The precast pipe pile 1, as the core load-bearing component, is made of a composite material of steel reinforcement and concrete. The steel reinforcement uses high-strength threaded steel bars, whose threaded structure enhances the bond with the concrete, improving the overall tensile and compressive strength of the structure. The protective layer on the outside of the steel reinforcement uses high-performance protective materials with precisely designed thickness, effectively isolating it from external environmental erosion and extending the service life of the steel reinforcement. The concrete uses a low-carbon mix design, reducing carbon emissions while ensuring strength. Its strength grade can be selected according to project requirements to meet the needs of different load-bearing scenarios. Furthermore, the precast pipe pile 1 can be prefabricated in a factory, offering advantages such as a short project construction period and minimal sludge pollution.

[0049] Low prestress is applied to the reinforcing bars during processing. This prestress effectively counteracts some of the tensile force experienced by the pipe pile during use, preventing premature plastic deformation of the reinforcing bars and further improving the structural stability and service life of the precast pipe pile 1. The precast pipe pile 1 is manufactured using a mechanical pile pressing process. Mechanized operation ensures precise dimensions and a dense structure after molding. After molding, hot water generated by photovoltaic solar energy is used for curing. This curing method is not only energy-saving and environmentally friendly but also allows for precise control of curing temperature, promoting stable strength growth of the concrete and ensuring that the overall performance of the precast pipe pile 1 meets the standards.

[0050] The working principle of this device is as follows:

[0051] In the initial installation phase, firstly, based on the requirements of the usage scenario, select splicing plates A701 and B702 with suitable shapes and angles. Precisely engage the splicing plates A701 and B702 with the engaging slots 703 on the outer periphery of the insert 301 using the symmetrically fixed clips 704 on the outer periphery. This ensures a secure connection between the splicing plates A701 and B702 and the outer periphery of the insert 301. After assembly, ensure the entire assembly of the splicing plates is parallel and flush against the ground. This guarantees that the insert 301 can be embedded into the ground at a standard angle, laying the foundation for subsequent fixation. If the installation environment is harsh, ground stakes can be driven into the holes on the splicing plates to further enhance the connection stability between the insert 301 and the ground, preventing loosening after initial installation.

[0052] After installation, the wind speed sensor, humidity sensor, and distance sensor on the upper outer ring surface of the embedded unit 301 start in real time, continuously monitoring parameters such as wind speed, humidity, and distance to surrounding objects. The monitored signals are transmitted to the control module in real time, providing data support for adjusting the angle of the rotating rod 2. When environmental parameters change, such as increased wind speed or changes in soil moisture causing changes in ground force, the control module determines whether the tilt of the rotating rod 2 needs to be adjusted based on the signals fed back by the sensors. If adjustment is needed, the second component 5 is triggered to start working.

[0053] When the second component 5 is working, the vertical rod 502 inside the confinement cavity 501 is subjected to the combined action of the attraction force of the magnet 601 and the external force generated by environmental changes, causing it to slide vertically within the confinement cavity 501. The cylindrical component 503, which is fixedly connected to the top of the vertical rod 502, moves vertically synchronously within the cavity A302 as the vertical rod 502 slides, thereby driving the telescopic rod 305, which is fixedly connected to the bottom of the cylindrical component 503, to extend and retract. During the extension and retraction of the telescopic rod 305, when it is in a non-inflated state, the telescopic end of the telescopic rod 305 is tightly fitted against the inner wall of the cavity B303, sealing the air inlet 306. This effectively prevents soil particles, moisture, and other impurities from entering the inner cavity of the insert 301 through the air inlet 306, avoiding blockage or corrosion of the internal components. When inflation assistance is needed, the telescopic rod 305 retracts, the air inlet 306 opens, and external gas enters chamber B303 through the one-way ventilation structure of the porous adapter 308, and then flows from chamber B303 into chamber C304.

[0054] After the gas enters the chamber C304, it pushes the ring 603 in the chamber B303 to slide downward under the guidance and restriction of the guide post. The elastic sealing plate 604 at the bottom of the ring 603 is squeezed and deformed, and the through hole 605 on it is misaligned with the air outlet 307, so that the gas is slowly discharged. The air pressure reaction force generated during the discharge process further assists the extension and retraction adjustment of the telescopic rod 305, ensuring that the angle adjustment of the rotating rod 2 is stable and accurate. Once the rotating rod 2 is adjusted to the appropriate angle, the control module stops triggering the adjustment signal. At this time, the third component 6 begins to play a stabilizing role: the magnet 601 generates a stable attraction force on the vertical rod 502, keeping the vertical rod 502 in its current position, thereby fixing the position of the cylindrical part 503 and the telescopic rod 305; at the same time, the inclined surface 602 at the junction of chamber A302 and chamber B303 restricts the further extension and retraction of the telescopic end of the telescopic rod 305, avoiding structural damage due to over-adjustment; after the gas pressure disappears, the ring 603 slides upward with the elastic restoring force of the elastic sealing plate 604, the elastic sealing plate 604 returns to its initial state, and the through hole 605 coincides with the vent 307, maintaining the balance of air pressure inside and outside the chamber, thereby keeping the rotating rod 2 stably at the adjusted angle and preventing it from shifting due to slight environmental fluctuations.

[0055] Throughout the entire process, the fourth component 7 continues to function. The splicing plates A701 and B702, through the tight engagement of the card 704 and the engaging groove 703, increase the contact area between the embedded body 301 and the ground, distributing the stress and reducing the impact of soil settlement on the stability of the embedded body 301. In extremely harsh environments, additional ground nails can be driven in through the holes on the splicing plates to further strengthen the fixing effect, ensuring that the precast pipe pile 1 remains stable and effectively bears external loads.

[0056] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-carbon, high-strength precast solid pipe pile for replacing bored cast-in-place piles, comprising a precast pipe pile (1), wherein a rotating rod (2) is rotatably connected to the outside of the precast pipe pile (1), characterized in that: The end of the rotating rod (2) away from the precast pipe pile (1) is rotatably connected to a screw (4). The screw (4) is provided with a first component (3). The first component (3) includes an insert (301) and a multi-hole adapter (308). The insert (301) can be inserted into the hole on the multi-hole adapter (308). The first component (3) also includes chambers A (302), B (303), and C (304) opened in the cavity of the insert (301). The inner diameter of chambers A (302), B (303), and C (304) gradually decreases from top to bottom and are distributed in sequence and interconnected.

2. The low-carbon, high-strength precast solid pipe pile for replacing bored cast-in-place piles according to claim 1, characterized in that: The first component (3) also includes a telescopic rod (305), and an air inlet (306) is symmetrically opened through the middle of the embedded body (301). The air inlet (306) is located at the location of chamber B (303), and an air outlet (307) is symmetrically opened through the bottom of the embedded body (301). The air outlet (307) is located at the location of chamber C (304).

3. The low-carbon, high-strength precast solid pipe pile for replacing bored cast-in-place piles according to claim 2, characterized in that: The screw (4) is further provided with a second component (5) which is used to adjust the inclination of the rotating rod (2) according to the environment.

4. The low-carbon, high-strength precast solid pipe pile for replacing bored cast-in-place piles according to claim 3, characterized in that: The second component (5) includes a limiting cavity (501) symmetrically fixed in the chamber A (302), a vertical rod (502) is slidably connected in the limiting cavity (501), a cylindrical member (503) is fixedly connected to the top of the vertical rod (502), the cylindrical member (503) is vertically slidably connected in the chamber A (302), and a telescopic rod (305) is fixedly connected to the bottom of the cylindrical member (503).

5. The low-carbon, high-strength precast solid pipe pile for replacing bored cast-in-place piles according to claim 1, characterized in that: Includes a third component (6) for maintaining the stability of the rotating rod (2) after the angle of the rotating rod (2) changes; The third component (6) includes a magnet (601) fixedly connected to the bottom of the inner cavity of the limiting cavity (501). The inner cavity of the embedding body (301) has different inner diameters of the chamber A (302) and the chamber B (303), and a junction with different inclined surfaces (602) is formed at the junction. A ring (603) is slidably connected inside the chamber B (303). The bottom surface of the ring (603) is symmetrically and fixedly connected with an elastic sealing piece (604), and the elastic sealing piece (604) has through holes (605) that are equidistantly opened.

6. The low-carbon, high-strength precast solid pipe pile for replacing bored cast-in-place piles according to claim 1, characterized in that: It also includes a fourth component (7) for increasing the stability of the embedding (301) on the ground. The fourth component (7) includes a splicing plate A (701) and a splicing plate B (702) on the periphery of the embedding (301). The splicing plate A (701) has a locking groove (703), and the splicing plate B (702) also has a matching locking groove (703). Cards (704) are symmetrically fixedly connected to the periphery of the embedding (301).

7. The low-carbon, high-strength precast solid pipe pile for replacing bored cast-in-place piles according to claim 6, characterized in that: Holes are provided on splicing plate A (701) and splicing plate B (702).

8. The low-carbon, high-strength precast solid pipe pile for replacing bored cast-in-place piles according to claim 2, characterized in that: The outer diameter of the telescopic rod (305) is adapted to the inner diameter of the chamber B (303), and guide columns are symmetrically arranged on the inner ring wall of the chamber C (304).

9. The low-carbon, high-strength precast solid pipe pile for replacing bored cast-in-place piles according to claim 1, characterized in that: The precast pipe pile (1) includes steel bars and concrete. The protective layer thickness of the steel bars is 50mm. The steel bars are threaded steel bars and are subjected to low prestress. The low prestress is 30% of the tensile strength of the steel bars. The strength grade of the concrete is C60, C80 or C100.

10. The low-carbon, high-strength precast solid pipe pile for replacing bored cast-in-place piles according to claim 9, characterized in that: The precast pipe pile (1) is formed by mechanical pile driving and is cured using hot water at 40~50℃ generated by photovoltaic solar energy.

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