Grouting connection section pile foundation sleeve centering adjusting device and method

Abstract

The invention provides a grouting connection section pile foundation sleeve centering adjusting device and method. The device comprises a steel pipe pile; the guide pipe pile is arranged in the steel pipe pile; the at least three centering adjusting shear nails are distributed in a scattering shape in the circumferential direction of the guide pipe pile, and the centering adjusting shear nails are arranged on the guide pipe pile in a sliding and penetrating mode; the plurality of driving mechanisms are in one-to-one correspondence with the centering adjusting shear nails, the fixed parts of the driving mechanisms are fixedly mounted on the guide pipe pile, and the power output ends of the driving mechanisms are connected with the centering adjusting shear nails. According to the method, the length, between the guide pipe pile and the steel pipe pile, of the centering adjusting shear nail is adjusted, the position of the guide pipe pile is adjusted with the position of the steel pipe pile as the reference, the center position of the inner sleeve, namely the guide pipe pile, can be adjusted, leveling and aligning can be rapidly conducted, and the bearing capacity of a foundation structure is improved.

Description

Technical Field

[0001] This invention relates to the field of wind power foundation structure technology, and more specifically, to a grouting connection section pile foundation sleeve centering adjustment device and method. Background Technology

[0002] In the process of controlling global warming and promoting green economic transformation and development, choosing a low-carbon, green, and sustainable development model has become a consensus among countries. Offshore wind power, as a crucial area of ​​renewable energy development, boasts advantages such as being pollution-free, suitable for large-scale development, and requiring no land occupation, making it a significant direction for driving wind power technology advancement and promoting energy structure adjustment. Simultaneously, it places higher demands on the transportation, construction period, and ease of construction of wind turbine foundations.

[0003] The wind turbine foundation bears the loads from the upper tower, nacelle, rotor, and external environment, and is a crucial component ensuring normal power generation. Currently, offshore wind turbine foundations are classified into fixed foundations and floating foundations based on whether they are rigidly connected to the seabed. Fixed foundations include monopile foundations, multipile foundations, high-pile foundation groups, gravity foundations, and jacket foundations; floating foundations include semi-submersible foundations, tension leg foundations, and deep-water pontoons. High-pile foundation structures were initially used in bridge and offshore platform construction, and later widely adopted for offshore wind power generation. They are highly adaptable, easy to construct, and require less sophisticated construction equipment. The design theories and construction equipment of pile + pile foundations used in cross-sea, cross-river, and port terminals can be directly applied, making them well-suited to the needs of my country's rapid offshore wind power development in the current period.

[0004] The sleeve grouting structure foundation has been widely used in the construction of near-shore wind farms, and it has significant advantages such as safety and economy.

[0005] Currently, some prefabricated assembled jacket sleeve connection structures are facing issues such as jacket tilt and misalignment of inner and outer sleeve centers. Summary of the Invention

[0006] In view of this, the present invention proposes a centering adjustment device and method for grouting connection section pile foundation sleeve, which aims to solve the problems of guide frame tilt and misalignment of inner and outer sleeve centers faced by some existing prefabricated assembled guide frame sleeve connection structures.

[0007] On one hand, this invention proposes a centering adjustment device for a grouted joint pile foundation sleeve. The device includes a steel pipe pile; a guide pipe pile disposed inside the steel pipe pile; at least three centering adjustment shear studs, each of which is radiating outwards along the circumference of the guide pipe pile and slidably inserted through the guide pipe pile; and a plurality of driving mechanisms corresponding one-to-one with each centering adjustment shear stud, the fixed parts of which are fixedly installed on the guide pipe pile, and the power output ends connected to the centering adjustment shear studs for driving the centering adjustment shear studs relative to the guide pipe pile. The guide pile moves linearly along its radial direction so that the pressing end of the centering adjustment shear pin can move toward the steel pipe pile until it abuts against the inner wall of the steel pipe pile. Under the interaction of the drive mechanism and the centering adjustment shear pin, the distance from the connection point of the guide pile to the drive mechanism to the inner wall of the steel pipe pile is adjusted with the position of the steel pipe pile as a reference. Through the adjustment of each centering adjustment shear pin, the distance between each centering adjustment shear pin and the guide pile and the steel pipe pile is equal, thereby realizing the centering adjustment of the guide pile and the steel pipe pile.

[0008] Furthermore, in the above-mentioned grouting connection section pile foundation sleeve centering adjustment device, the driving mechanism includes: a drive motor, the fixed part of which is fixedly installed on the guide pile; a transmission component, the power input end of which is connected to the power output end of the drive motor, and the power output end of which is connected to the centering adjustment shear pin, for converting the rotation of the drive motor into linear motion of the centering adjustment shear pin relative to the guide pile, or into linear motion of the fixed part of the drive motor relative to the centering adjustment shear pin, so as to drive the connection point of the guide pile connected to the fixed part of the drive motor to move, thereby realizing the centering adjustment of the guide pile.

[0009] Furthermore, in the above-mentioned grouting connection section pile foundation sleeve centering adjustment device, the transmission component includes: a transmission gear, which is disposed on the output shaft of the drive motor; and a transmission rack, which is disposed on the centering adjustment shear pin, and the transmission rack meshes with the transmission gear.

[0010] Furthermore, in the above-mentioned grouting connection section pile foundation sleeve centering adjustment device, the driving mechanism further includes: a driving housing; wherein, the driving housing is disposed outside the driving motor and the transmission mechanism, the fixing part of the driving motor is installed on the driving housing, and the driving housing is fixedly installed on the inner wall of the guide pile.

[0011] Furthermore, in the above-mentioned grouting connection section pile foundation sleeve centering adjustment device, each connection point of the guide pipe pile connected to the driving mechanism is equipped with a spacing detector to obtain the spacing between the connection point of the guide pipe pile connected to the driving mechanism and the inner wall of the steel pipe pile; each centering adjustment shear nail's pressing end is also equipped with a contact detector to obtain whether the pressing end of the corresponding centering adjustment shear nail is in contact with the inner wall of the steel pipe pile.

[0012] Furthermore, the above-mentioned grouting connection section pile foundation sleeve centering adjustment device further includes: a controller connected to each of the contact detectors, used to control the corresponding drive mechanism according to whether the pressing end of the corresponding centering adjustment shear nail is in contact with the inner wall of the steel pipe pile.

[0013] Furthermore, in the above-mentioned grouting connection section pile foundation sleeve centering adjustment device, the controller is connected to each of the distance detectors respectively, and is used to receive the distance information obtained by each of the distance detectors, and control the corresponding drive mechanism based on this.

[0014] Furthermore, in the above-mentioned grouting connection section pile foundation sleeve centering adjustment device, the controller is also used to control each of the driving mechanisms to move one by one, so that the driving mechanism drives the corresponding centering adjustment shear nail to move linearly until the pressing end of each centering adjustment shear nail contacts the inner wall of the steel pipe pile one by one, and compares the current distance information obtained by each distance detector, and performs coordinated control of each driving mechanism based on the current distance information obtained by each distance detector until the current distance information obtained by each distance detector is equal.

[0015] Furthermore, in the above-mentioned grouting connection section pile foundation sleeve centering adjustment device, the outer periphery of the guide pile is provided with a number of radiating support shear nails.

[0016] On the other hand, the present invention also proposes a method for centering and adjusting the sleeve of the grouting connection section pile foundation. The method uses the above-mentioned centering and adjusting device for the grouting connection section pile foundation sleeve and includes the following steps: inserting the guide pipe pile into the interior of the pre-driven steel pipe pile and fixing its initial position; controlling one of the driving mechanisms to move so that the driving mechanism drives the corresponding centering adjustment shear nail to move linearly until the pressing end of the centering adjustment shear nail contacts the inner wall of the steel pipe pile; adjusting the position of the remaining centering adjustment shear nails through the remaining driving mechanisms so that the pressing end of each centering adjustment shear nail contacts the inner wall of the steel pipe pile, and limiting the position of the centering adjustment shear nails with the inner wall of the steel pipe pile as a reference to adjust the position of the guide pipe pile until the guide pipe pile and the steel pipe pile are aligned.

[0017] The grouting connection section pile foundation sleeve centering adjustment device and method provided by this invention adjusts the length of the centering adjustment shear nail within the grouting connection section, that is, adjusts the length of the centering adjustment shear nail placed between the guide pile and the steel pipe pile. Using the position of the steel pipe pile as a reference, the position of the guide pile is adjusted to adjust the center position of the internal sleeve, i.e., the guide pile. This allows for rapid leveling and alignment, improving the bearing capacity of the foundation structure. It effectively solves the problems of difficulty in leveling the overall guide frame, excessive inclination rate, long construction period, and slow construction speed faced by new wind farm foundations. It has advantages such as simple structure, convenient installation, high efficiency, economy, and strong shear resistance, significantly improving economy and safety, and enhancing foundation quality. Attached Figure Description

[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of the grouting connection section pile foundation sleeve centering adjustment device provided in an embodiment of the present invention; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a top view of the grouting connection section pile foundation sleeve centering adjustment device provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the top flange of the grouting connection section of the pile foundation provided in an embodiment of the present invention; Figure 5 This is a flowchart illustrating the method for centering and adjusting the grouting connection section pile foundation sleeve provided in an embodiment of the present invention. Detailed Implementation

[0019] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] Device Example: See Figures 1 to 3This figure illustrates a preferred structure of the grouting connection section pile foundation sleeve centering adjustment device provided in an embodiment of the present invention. As shown, the device includes: a steel pipe pile 1, a guide pipe pile 2, a centering adjustment shear nail 3, a drive mechanism 4, and a supporting shear nail 5; wherein, The guide pipe pile 2 is located inside the steel pipe pile 1; at least three centering adjustment shear studs 3 are distributed in a radiating pattern along the circumference of the guide pipe pile 2, and each centering adjustment shear stud 3 is slidably inserted into the guide pipe pile 2. Specifically, the guide pipe pile 2 is located inside the steel pipe pile 1, and a number of radiating support shear studs 5 are provided on the outer periphery of the guide pipe pile 2 to improve the shear resistance of the grouted connection section pile foundation. In this embodiment, at least three radiating centering adjustment shear studs 3 are also provided on the outer periphery of the guide pipe pile 2. The centering adjustment shear studs 3 are distributed radially along the guide pipe pile 2 and are inserted into the guide pipe pile 2 in a position-adjustable manner along the radial direction of the guide pipe pile 2 to adjust the length of the centering adjustment shear studs 3 between the steel pipe pile 1 and the guide pipe pile 2, thereby adjusting the distance between the steel pipe pile 1 and the guide pipe pile 2. In this embodiment, the centering shear studs 3 can be multi-layered, with at least three studs in each layer, to adjust the center position of the guide pile 2 at different axial positions, thus achieving centering adjustment. The centering shear studs 3 and the supporting shear studs 5 can be placed in two separate layers to avoid interference between them. For example... Figure 3 As shown, there are four centering adjustment shear studs 3, but other numbers are also possible; this embodiment does not impose any limitations. Preferably, the centering adjustment shear studs 3 can be arranged in pairs, with each pair arranged along the same radial direction of the guide pipe pile 2 for direct alignment. In this embodiment, concrete can be poured between the guide pipe pile 2 and the steel pipe pile 1 to form a grouted connection section 7.

[0021] Several drive mechanisms 4 correspond one-to-one with centering adjustment shear pins 3. The fixed part of the drive mechanism 4 is fixedly installed on the guide pile 2, and the power output end is connected to the centering adjustment shear pin 3. It is used to drive the centering adjustment shear pin 3 to move linearly in the radial direction relative to the guide pile 2, so that the pressing end of the centering adjustment shear pin 3 can move towards the steel pipe pile 1 until it abuts against the inner wall of the steel pipe pile 1. Under the interaction of the drive mechanism 4 and the centering adjustment shear pin 3, the distance from the connection point of the guide pile 2 connected to the drive mechanism 4 to the inner wall of the steel pipe pile 1 is adjusted with the position of the steel pipe pile 1 as a reference. Through the adjustment of each set of centering adjustment shear pins 3, the distance between each centering adjustment shear pin 3 and the guide pile 2 and the steel pipe pile 1 is equal, thereby realizing the centering adjustment of the guide pile 2 and the steel pipe pile 1.

[0022] Specifically, the drive mechanism 4 corresponds one-to-one with the centering adjustment shear pin 3; in this embodiment, the drive mechanism 4 is located inside the guide pile 2, and its fixing part is fixedly connected to the inner wall of the guide pile 2. The drive mechanism 4 is connected to the part of the centering adjustment shear pin 3 placed inside the guide pile 2, and can drive the centering adjustment shear pin 3, which can drive the centering adjustment shear pin 3 along the radial direction of the guide pile 2 (e.g., Figure 2 The horizontal direction shown makes a linear movement, so that the pressing end of the centering adjustment shear nail 3 (such as...) moves in a straight line, so that ... Figure 2 The right end of the centering adjustment shear nail 3 shown on the right side can press against the inner wall of the steel pipe pile 1. Due to the limiting of the centering adjustment shear nail 3 by the steel pipe pile 1, the driving mechanism 4 drives the centering adjustment shear nail 3, causing the driving mechanism 4 to move linearly relative to the centering adjustment shear nail 3. This, in turn, causes the connection point of the driving mechanism 4 connected to the guide pile 2 to move linearly, thereby adjusting the position of the guide pile 2 on this side. Through the adjustment of multiple positions around the guide pile 2, the center position of the guide pile 2 can be adjusted so that the cross section of the guide pile 2 can be adjusted to coincide with the center position of the steel pipe pile 1. That is, the centering adjustment of the cross section is completed. Through the adjustment of multiple axial positions, that is, the adjustment of multiple layers of centering adjustment shear nails 3, the overall centering adjustment of the guide pile 2 is achieved, avoiding the tilting of the guide pile 2, that is, the coaxial coincidence of the inner and outer pile centers. It can also ensure the overall horizontality of the steel pipe frame, ensure uniform stress on the casing, thereby reducing material consumption, improving casing installation efficiency, and saving labor for on-site construction. At the same time, as Figure 4 As shown, by adjusting the centering of multiple inner and outer piles below the jacket flange 6, the steel pipe frame is made level, thereby completing the leveling of the jacket flange 6. The levelness of the jacket flange 6 can be obtained based on the level on the jacket flange 6 to ensure that the steel pipe frame is level.

[0023] In this embodiment, each centering shear stud is further equipped with a contact detector at its pressing end to determine whether there is contact between the pressing end of the centering shear stud and the inner wall of the steel pipe pile. Specifically, the contact detector can detect whether there is contact between the pressing end of the centering shear stud and the inner wall of the steel pipe pile, so that the centering adjustment of the guide pile 2 can be performed under the premise that the pressing end of the centering shear stud is in contact with the inner wall of the steel pipe pile. Of course, each connection point of the guide pile connected to the drive mechanism is equipped with a spacing detector to determine the spacing between the connection point of the guide pile connected to the drive mechanism and the inner wall of the steel pipe pile, so that the spacing between each connection point of the guide pile connected to each drive mechanism and the inner wall of the steel pipe pile is equal, thereby realizing the centering adjustment of the guide pile 2. The contact detectors are connected to a controller, which controls the corresponding drive mechanism based on whether the pressing end of the centering shear pin is in contact with the inner wall of the steel pipe pile. The drive mechanism stops when the pressing end of the first centering shear pin contacts the inner wall of the steel pipe pile. Subsequent centering shear pin adjustments are then made based on this first shear pin, ensuring that the pressing end of each centering shear pin 4 is in contact with the inner wall of the steel pipe pile. The drive mechanism continues to adjust the position of the connection point of the guide pipe pile through at least a portion of the drive mechanism 4. In this embodiment, the controller is also connected to each distance detector to receive distance information from each detector and control the corresponding drive mechanism accordingly to adjust the position of the guide pipe pile so that the distance information obtained by the distance detectors is equal. In this embodiment, the controller can control each drive mechanism 4 to move sequentially, so that the drive mechanism 4 drives the corresponding centering adjustment shear nail 3 to move linearly until the pressing end of each centering adjustment shear nail 3 contacts the inner wall of the steel pipe pile 1 one by one. The controller compares the current distance information obtained by each distance detector and performs coordinated control of each drive mechanism based on the current distance information obtained by each distance detector until the current distance information obtained by each distance detector is equal, especially when each pair of centering adjustment shear nails 3 is placed between the guide pile 2 and the steel pipe pile 1. The distances are all equal, meaning that the two current distance information obtained by the two distance detectors corresponding to each pair of centering adjustment shear nails 3 are equal. For example, the centering adjustment shear nail 3 corresponding to the one with the smallest current distance information can be adjusted first until the distance between the two centering adjustment shear nails 3 in the radial direction of that centering adjustment shear nail 3 and the guide pipe pile 2 and steel pipe pile 1 is equal. Then, each pair of centering adjustment shear nails 3 is adjusted one by one until the distance between the two centering adjustment shear nails 3 in each pair and the guide pipe pile 2 and steel pipe pile 1 is equal, thus completing the centering adjustment.

[0024] In this embodiment, the drive mechanism 4 includes a drive motor (not shown in the figure), a transmission assembly 41, and a drive housing 42. The fixed part of the drive motor is fixedly mounted on the guide pile 2. The power input end of the transmission assembly 41 is connected to the power output end of the drive motor, and the power output end is connected to the centering adjustment shear pin 3. This converts the rotation of the drive motor into linear motion of the centering adjustment shear pin 3 relative to the guide pile 2, or into linear motion of the fixed part of the drive motor relative to the centering adjustment shear pin 3, thereby driving the connection point of the guide pile 2 connected to the fixed part of the drive motor to move, thus achieving the centering adjustment of the guide pile 2. Specifically, the transmission assembly 41 realizes the conversion between rotation and linear motion, driving the centering adjustment shear pin 3 to move linearly. After the pressing end of the centering adjustment shear pin 3 presses against the inner wall of the steel pipe pile 1, the drive motor continues to rotate. Based on the relative motion, the drive motor rotates while driving the connection point of the guide pile 2 to move linearly along the length direction of the centering adjustment shear pin 3, thereby achieving the adjustment of the center position of the guide pile 2. In this embodiment, the fixing part of the drive motor can be fixedly installed on the guide pile 2 through the drive housing 42. That is, the drive housing 42 is located outside the drive motor and the transmission mechanism 41, and the fixing part of the drive motor is installed on the inner wall of the drive housing 42. The drive housing 42 is fixedly installed on the inner wall of the guide pile 2, which not only protects the drive motor and the transmission mechanism 41 from external damage or interference, but also realizes the connection between the fixing part of the drive motor and the guide pile 2, which can drive the guide pile 2 to move linearly with the drive motor.

[0025] See also Figure 2 The transmission assembly 41 includes a transmission gear 411 and a transmission rack 412. The transmission gear 411 is mounted on the output shaft of the drive motor. The transmission rack 412 is mounted on the centering adjustment shear pin 3. The transmission rack 412 meshes with the transmission gear 411 so that, driven by the drive motor, the transmission rack 412 can drive the centering adjustment shear pin 3 to move linearly. After the centering adjustment shear pin 3 presses against the inner wall of the steel pipe pile 1, its movement toward the steel pipe pile 1 is restricted. The drive motor continues to rotate, which can drive the transmission rack 412 to rotate synchronously, so that the transmission gear 411 rotates while moving linearly, that is, moving toward the center of the guide pile 2, so as to drive the guide pile 2 to adjust its position.

[0026] In summary, the grouting connection section pile foundation sleeve centering adjustment device provided in this embodiment adjusts the length of the centering adjustment shear nail within the grouting connection section, i.e., adjusts the length of the centering adjustment shear nail placed between the guide pile and the steel pipe pile. Using the position of the steel pipe pile as a reference, the position of the guide pile is adjusted to adjust the center position of the internal sleeve, i.e., the guide pile. This allows for rapid leveling and alignment, improving the bearing capacity of the foundation structure. It effectively solves the problems of difficulty in leveling the overall guide frame, excessive inclination rate, long construction period, and slow construction speed faced by new wind farm foundations. It has advantages such as simple structure, convenient installation, high efficiency, economy, and strong shear resistance, significantly improving economy and safety, and enhancing foundation quality. This device is particularly used at the connection between the inner and outer sleeves of the jacket structure. It uses centering shear studs to adjust the bottom position of the sleeve, so that the centers of the inner and outer tubes coincide, thereby leveling the jacket and connecting the two into a whole through the centering shear studs. It makes full use of the shear resistance of the centering shear studs and the supporting shear studs to resist the relative sliding and vertical separation at the interface between the steel pipe pile and the concrete during wind turbine operation. This reduces the leveling time of the offshore jacket structure and the tilt angle, thereby improving the shear bearing capacity of the foundation structure and the construction efficiency.

[0027] Method Implementation Examples: See Figure 5 This is a flowchart illustrating the method for centering and adjusting the grouting connection section pile foundation sleeve provided in an embodiment of the present invention. As shown in the figure, the method includes the following steps: Step S1: Insert the guide pipe pile into the interior of the pre-driven steel pipe pile and fix its initial position.

[0028] Specifically, the guide pile 2 is slowly inserted into the pre-driven steel pipe pile 1 according to the construction method, and its approximate position is fixed.

[0029] Step S2: Control one of the drive mechanisms to move so that the drive mechanism drives the corresponding centering adjustment shear stud to move in a straight line until the pressing end of the centering adjustment shear stud contacts the inner wall of the steel pipe pile.

[0030] Specifically, the position of a centering shear stud is adjusted so that it abuts against the inner wall of the outer pile, i.e., the steel pipe pile 1.

[0031] Step S3: The remaining driving mechanisms are used to adjust the positions of the remaining centering shear pins so that the pressing ends of each centering shear pin are in contact with the inner wall of the steel pipe pile. The positions of the centering shear pins are limited with the inner wall of the steel pipe pile as a reference, so as to adjust the position of the guide pile until the guide pile and the steel pipe pile are aligned.

[0032] Specifically, using the inner wall of the outer pile as support, the position of the inner pile is adjusted by adjusting the position of the remaining three centering shear studs in conjunction with the position of the guide pile. This adjustment ensures that the centers of the inner and outer piles are coaxial and that the steel pipe frame is level. Specifically, the center position of each guide pile 2 is adjusted by controlling the extension and retraction of the four centering shear studs 3 at the bottom of the four pile feet. The leveling of the guide frame flange can be checked by referring to a level placed on the flange face. Based on the above sequence, the four grouting connection piles are adjusted one by one to compare the current distance information obtained by each distance detector. The drive mechanisms are then coordinated based on the current distance information obtained by each distance detector until the current distance information obtained by each distance detector is equal. In particular, the distance between the two centering shear studs placed between the guide pile and the steel pipe pile must be equal. Whether the distances between different pairs are equal depends mainly on whether the guide pile is deformed. Deformation cannot be adjusted by this device; this adjustment is mainly a position adjustment. During adjustment, a pair of centering shear studs can be adjusted collaboratively.

[0033] In summary, the grouting connection section pile foundation sleeve centering adjustment method provided in this embodiment adjusts the length of the centering adjustment shear nail within the grouting connection section, that is, adjusts the length of the centering adjustment shear nail placed between the guide pile and the steel pipe pile. Using the position of the steel pipe pile as a reference, the position of the guide pile is adjusted to adjust the center position of the internal sleeve, i.e., the guide pile. This allows for rapid leveling and alignment, improving the bearing capacity of the foundation structure. It effectively solves the problems of difficulty in leveling the overall guide frame, excessive inclination rate, long construction period, and slow construction speed faced by new wind farm foundations. It has advantages such as simple structure, convenient installation, high efficiency, economy, and strong shear resistance, significantly improving economic efficiency and safety, and enhancing foundation quality.

[0034] It should be noted that in the description of this invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0035] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A centering and adjustment device for a grouting connection section pile foundation sleeve, characterized in that, include: Steel pipe piles; The guide pile is installed inside the steel pipe pile; At least three centering shear studs are provided, each of which is distributed in a radiating pattern along the circumference of the guide pile, and each of which is slidably inserted into the guide pile. Several drive mechanisms, each corresponding to one of the centering adjustment shear pins, are fixedly mounted on the guide pile. Their power output ends are connected to the centering adjustment shear pins, driving them to move radially relative to the guide pile in a linear motion. This allows the pressing end of the shear pin to move towards the steel pipe pile until it abuts against the inner wall of the steel pipe pile. Through the interaction of the drive mechanisms and the centering adjustment shear pins, and using the position of the steel pipe pile as a reference, the distance from the connection point of the guide pile to the drive mechanism to the inner wall of the steel pipe pile is adjusted. This ensures that the distance between each centering adjustment shear pin and the guide pile is equal, thereby achieving centering adjustment between the guide pile and the steel pipe pile.

2. The grouting connection section pile foundation sleeve centering adjustment device according to claim 1, characterized in that, The drive mechanism includes: The drive motor has its fixing part fixedly installed on the guide pile; The transmission assembly has its power input end connected to the power output end of the drive motor and its power output end connected to the centering adjustment shear pin. It is used to convert the rotation of the drive motor into linear motion of the centering adjustment shear pin relative to the guide pile, or into linear motion of the fixed part of the drive motor relative to the centering adjustment shear pin, so as to drive the connection point of the guide pile connected to the fixed part of the drive motor to move, thereby realizing the centering adjustment of the guide pile.

3. The grouting connection section pile foundation sleeve centering adjustment device according to claim 2, characterized in that, The transmission assembly includes: A transmission gear is mounted on the output shaft of the drive motor; A transmission rack is mounted on the centering adjustment shear pin, and the transmission rack meshes with the transmission gear.

4. The grouting connection section pile foundation sleeve centering adjustment device according to claim 2, characterized in that, The driving mechanism further includes: a driving housing; wherein... The drive housing is disposed outside the drive motor and transmission mechanism, the fixing part of the drive motor is mounted on the drive housing, and the drive housing is fixedly mounted on the inner wall of the guide pile.

5. The grouting connection section pile foundation sleeve centering adjustment device according to any one of claims 1 to 4, characterized in that, Each connection point of the guide pipe pile to the drive mechanism is equipped with a spacing detector to obtain the spacing between the connection point of the guide pipe pile to the drive mechanism and the inner wall of the steel pipe pile. Each of the centering adjustment shear studs is further provided with a contact detector at its pressing end, which is used to determine whether the pressing end of the corresponding centering adjustment shear stud is in contact with the inner wall of the steel pipe pile.

6. The grouting connection section pile foundation sleeve centering adjustment device according to claim 5, characterized in that, Also includes: The controller, connected to each of the contact detectors, is used to control the corresponding drive mechanism based on whether the pressing end of the corresponding centering adjustment shear stud is in contact with the inner wall of the steel pipe pile.

7. The grouting connection section pile foundation sleeve centering adjustment device according to claim 6, characterized in that, The controller is connected to each of the distance detectors and is used to receive the distance information acquired by each distance detector and control the corresponding drive mechanism based on the information.

8. The grouting connection section pile foundation sleeve centering adjustment device according to claim 7, characterized in that, The controller is also used to control each of the drive mechanisms to move one by one, so that the drive mechanism drives the corresponding centering adjustment shear nail to move in a straight line until the pressing end of each centering adjustment shear nail contacts the inner wall of the steel pipe pile one by one, and compares the current distance information obtained by each distance detector, and performs coordinated control of each drive mechanism based on the current distance information obtained by each distance detector until the current distance information obtained by each distance detector is equal.

9. The grouting connection section pile foundation sleeve centering adjustment device according to any one of claims 1 to 4, characterized in that, The outer periphery of the guide pile is provided with a number of radiating support shear studs.

10. A method for centering and adjusting the sleeve of a grouting connection section pile foundation, characterized in that, The adjustment is performed using the grouting connection section pile foundation sleeve centering adjustment device as described in any one of claims 1 to 9, comprising the following steps: Insert the guide pipe pile into the pre-driven steel pipe pile and fix its initial position; Control one of the drive mechanisms to move so that the drive mechanism drives the corresponding centering adjustment shear stud to move in a straight line until the pressing end of the centering adjustment shear stud contacts the inner wall of the steel pipe pile; The remaining driving mechanisms adjust the positions of the remaining centering shear studs so that the pressing ends of each centering shear stud are in contact with the inner wall of the steel pipe pile. The positions of the centering shear studs are limited by the inner wall of the steel pipe pile to adjust the position of the guide pile until the guide pile and the steel pipe pile are aligned.

Images