Segmented assembly method of long reinforcement cage on long spiral drill machine vibrator

Abstract

The present application relates to the construction of the field of cast-in-place pile construction technology, more specifically, it relates to a kind of long steel reinforcement cage on long spiral drill rig vibratory hammer segmented assembly method, comprising the following steps: S1.steel reinforcement cage segmented processing: the steel reinforcement cage of preset length is divided into two sections along the axial processing, form top section steel reinforcement cage and bottom section steel reinforcement cage;S2.vibratory hammer is placed in position: vibratory hammer is horizontally placed on triangular support assembly;S3.steel reinforcement cage is set in vibratory hammer: first, top section steel reinforcement cage is set in the outside of vibratory hammer, then bottom section steel reinforcement cage is set in the outside of vibratory hammer, the main reinforcement joint of the connecting area of two sections is staggered;S4.steel reinforcement cage is welded into a whole: the main reinforcement of two section steel reinforcement cage is welded outside vibratory hammer, form integral steel reinforcement cage, the method will traditional long steel reinforcement cage be divided into two sections and be set in the outside of vibratory hammer, effectively solve the technical problem that super-long steel reinforcement cage cannot be integrally set in vibratory hammer under the condition of narrow site.

Description

Technical Field

[0001] This invention relates to the field of construction technology for cast-in-place piles, and more specifically, to a method for assembling a long steel reinforcement cage in sections on a vibratory hammer of a long spiral drilling rig. Background Technology

[0002] The process of drilling holes with a long spiral drilling rig, grouting concrete, and then inserting a reinforcing cage is a mature technology widely used in current cast-in-place pile construction. It is especially suitable for pile foundation projects under general geological conditions such as silt and sand. This process involves drilling with a long spiral drilling rig to extract soil and form a hole, simultaneously or subsequently grouting concrete into the hole, and then using a vibratory hammer to vibrate and insert a precast reinforcing cage into the concrete. It has advantages such as good pile quality, high construction efficiency, and no mud pollution. In conventional engineering practice, to ensure the overall rigidity of the reinforcing cage and the smoothness of its lowering, the reinforcing cage is usually fabricated as a whole on the ground and then axially fitted onto the outside of a horizontally placed vibratory hammer cylinder. Subsequently, the vibratory hammer and the reinforcing cage are lifted as a whole, inserted into the pile hole, and vibrated to sink. However, with the deepening development of urban underground space, more and more pile foundation projects need to be carried out in narrow and restricted areas, such as the bottom of deep foundation pits, the perimeter of existing buildings, or the interior of underground structures. In such cases, when the designed pile length exceeds 25 meters, the corresponding steel cage length often reaches more than 26 meters. The operation of installing the vibratory hammer as a whole faces severe challenges. The overall length of the steel cage far exceeds the available space on the working surface, and the vibratory hammer rod cannot be installed in the long steel cage. Summary of the Invention

[0003] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. The summary section of this invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0004] To at least partially solve the above problems, the present invention provides a method for assembling a long reinforcing cage in sections on a vibratory hammer of a long auger drilling rig, comprising the following steps: S1. Segmented processing of reinforcing cage: The reinforcing cage of the preset length is divided into two segments along the axial direction for processing, forming a top section reinforcing cage and a bottom section reinforcing cage. Stirrups are reserved at the lower end of the top section reinforcing cage. S2. Place the vibratory hammer in position: Place the vibratory hammer horizontally on the triangular support assembly; S3. Reinforcing cage with vibratory hammer: First, place the top section of the reinforcing cage on the outside of the vibratory hammer, and then place the bottom section of the reinforcing cage on the outside of the vibratory hammer. The main reinforcement joints in the connection area of ​​the two sections are staggered. S4. Welding the steel cage into a whole: Weld the main bars of the two sections of the steel cage to the outside of the vibrating hammer to form a whole steel cage.

[0005] Furthermore, in step S1, the length of the top section steel cage is 10 to 13 meters, and the length of the bottom section steel cage is 13 to 16 meters.

[0006] Furthermore, in step S2, the height of the triangular support assembly is 0.7 to 1.0 meters, and the support position of the triangular support assembly is located in the upper-middle region along the length of the vibratory hammer.

[0007] Furthermore, in step S3, the main reinforcement joints in the connection area of ​​the top section reinforcement cage and the bottom section reinforcement cage are staggered by a distance of 0.8 to 1.2 meters.

[0008] Furthermore, in step S4, the welding points of the main reinforcement bars of the top section steel cage are located on the outside of the main reinforcement bars, and the welding points of the main reinforcement bars of the bottom section steel cage are located on the inside of the main reinforcement bars. The welding length is not less than 10 times the diameter of the steel bars. After the main reinforcement bars are welded, the stirrups reserved at the lower end of the top section steel cage are wrapped around the connection area and tied and fixed.

[0009] Furthermore, in step S4, the welded integral steel cage and vibratory hammer are lifted, inserted into the pre-drilled pile hole, and vibrated as they are lowered.

[0010] Furthermore, the triangular support assembly includes a platform support, with the upper-middle region of the vibratory hammer placed on the platform support along its length. A support rod is slidably connected inside the platform support, and the support rod is supported at the lower end of the platform plate. The upper ends of the platform support and the platform plate are flush.

[0011] Furthermore, the platform support is rotatably connected to two leg frames on both sides, and the leg frames are provided with multiple locking blocks. The lower end of the leg frame is rotatably connected to a foot plate, and the foot plate is provided with fixing holes. A lower connecting plate and an upper connecting plate are provided between the two leg frames. The end of the lower connecting plate is fixed to one leg frame, and the upper connecting plate is fixed to the other leg frame. The lower connecting plate and the upper connecting plate are arranged parallel to each other. The upper end of the lower connecting plate is provided with multiple locking slots, and the hook provided at the front end of the upper connecting plate is engaged in the locking slots.

[0012] Furthermore, the platform bracket is rotatably connected to one end of the support plate, and a slide bracket is fixed to the other end of the support plate. The slide bracket is rotatably connected to the slide plate. The top section steel cage and the bottom section steel cage are slidably connected to the slide plate. The middle part of the support plate is rotatably connected to the upper part of the inclined plate, and the lower end of the inclined plate is engaged between the leg frame and the locking block.

[0013] Furthermore, the platform support is rotatably connected to one end of the arc-shaped pressure frame, the upper end of the arc-shaped pressure frame presses on the connection area between the top section of the reinforcing cage and the bottom section of the reinforcing cage, the other end of the arc-shaped pressure frame is rotatably connected to the rotating plate, the lower end of the rotating plate is fixed with a locking plate, the end of the platform support is fixed with a vertical plate, the locking screw passes through the locking plate and is threaded into the screw hole provided on the vertical plate.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: The pre-set length of the reinforcing cage is divided into two sections along the axial direction: a top section and a bottom section. Stirrups are pre-installed at the lower end of the top section. The vibratory hammer is placed horizontally on a triangular support assembly to form a stable support platform. First, the top section is axially fitted onto the outside of the vibratory hammer, and then the bottom section is fitted from the same side. The two sections are axially joined on the outside of the vibratory hammer. Then, the main reinforcement bars of the two sections are welded onto the outside of the vibratory hammer to form a complete reinforcing cage. This method effectively solves the technical problem of not being able to fit an ultra-long reinforcing cage as a whole onto the vibratory hammer in confined spaces.

[0015] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a process flow diagram of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram of the triangular support assembly structure of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the triangular support assembly structure of the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the triangular support assembly structure of the present invention. Figure 3 ; Figure 6 for Figure 5 Enlarged view of a portion of point A in the middle; Explanation of markings in the diagram: 1. Top section reinforcement cage; 2. Bottom section reinforcement cage; 3. Vibrating hammer; 4. Platform support; 5. Platform plate; 6. Support rod; 7. Leg frame; 8. Clamping block; 9. Foot plate; 10. Fixing hole; 11. Lower connecting plate; 12. Upper connecting plate; 13. Inclined plate; 14. Support plate; 15. Slide plate support; 16. Slide plate; 17. Arc-shaped pressure frame; 18. Turning plate; 19. Locking plate; 20. Locking screw; 21. Vertical plate; 22. Screw hole. Detailed Implementation

[0017] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0018] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] Example 1: As Figures 1-6 As shown, the method for assembling a long reinforcing cage in sections on the vibratory hammer of a long auger drilling rig includes the following steps: S1. Segmented processing of steel cage: The steel cage of the preset length is divided into two segments along the axial direction for processing, forming the top segment steel cage 1 and the bottom segment steel cage 2. The bottom end of the top segment steel cage 1 is reserved with stirrups. S2. Place the vibratory hammer 3 in position: Place the vibratory hammer 3 horizontally on the triangular support assembly; S3. Reinforcing cage with vibrating hammer 3: First, the top section reinforcing cage 1 is placed on the outside of vibrating hammer 3, and then the bottom section reinforcing cage 2 is placed on the outside of vibrating hammer 3. The main reinforcement joints of the two sections are staggered. S4. Welding the steel cage into a whole: Weld the main bars of the two sections of the steel cage to the outside of the vibrating hammer 3 to form a whole steel cage; The working principle of the above technical solution is as follows: In this embodiment, a pre-set length steel cage is processed into two sections along the axial direction: a top section steel cage 1 and a bottom section steel cage 2. Stirrups are reserved at the lower end of the top section steel cage 1. The vibrating hammer 3 is placed horizontally on the triangular support assembly to form a stable support platform. First, the top section steel cage 1 is axially fitted onto the outside of the vibrating hammer 3. Then, the bottom section steel cage 2 is fitted onto the outside of the vibrating hammer 3 from the same side. The two sections of steel cage are axially connected on the outside of the vibrating hammer 3. Subsequently, the main bars of the two sections of steel cage are welded on the outside of the vibrating hammer 3 to form an integral steel cage. This method divides the traditional long steel cage into two sections and fits them onto the outside of the vibrating hammer 3 respectively. After the fitting is completed, they are spliced ​​together, which effectively solves the technical problem that ultra-long steel cages cannot be fitted onto the vibrating hammer 3 as a whole under narrow site conditions.

[0020] Example 2: Figures 1-6 As shown, in step S1, the length of the top section steel cage 1 is 10 to 13 meters, and the length of the bottom section steel cage 2 is 13 to 16 meters; The working principle of the above technical solution is as follows: This embodiment rationally configures the length ratio of the top section steel cage 1 and the bottom section steel cage 2, enabling both steel cages to be horizontally installed within a limited working space. The top section steel cage 1 is relatively short, facilitating guidance control and end positioning during initial installation; the bottom section steel cage 2 is relatively long, ensuring that the connection area after installation is located in the middle of the vibrating hammer 3, facilitating welding operations. This differentiated length design balances the convenience of installation operations with the accessibility of the connection area, avoiding jamming or bending during installation due to excessive length of a single section, while ensuring sufficient operating space in the connection area after installation of the two steel cages, thus improving the overall efficiency and connection reliability of segmented assembly.

[0021] Example 3: Figures 1-6 As shown, in step S2, the height of the triangular support assembly is 0.7 to 1.0 meters, and the support position of the triangular support assembly is located in the upper-middle region along the length of the vibratory hammer 3. The working principle of the above technical solution is as follows: The vibratory hammer 3 is supported in the upper middle part of the triangular bracket assembly, so that the lower part of the vibratory hammer 3 cylinder forms an open operating space. This support position design allows the bottom of the rebar cage to be suspended during installation, avoiding deformation of the cage or damage to the stirrups caused by friction with the ground. At the same time, the center of gravity of the vibratory hammer 3 is located below the support point, forming a stable and balanced state, preventing the vibratory hammer 3 from rolling or overturning during installation. The appropriate support height ensures that the operator can stand and perform welding operations, while avoiding excessive height that would make it difficult to control the direction when installing the rebar cage. This achieves a balance between support stability and operational convenience, creating favorable conditions for the precise docking of the rebar cage on the outside of the vibratory hammer 3.

[0022] Example 4: Figures 1-6 As shown, in step S3, the main reinforcement joints in the connection area of ​​the top section steel cage 1 and the bottom section steel cage 2 are staggered by a distance of 0.8 to 1.2 meters; The working principle of the above technical solution is as follows: The top section of the reinforcing cage 1 and the bottom section of the reinforcing cage 2 employ a staggered arrangement of main reinforcement joints in the connection zone. This creates a stepped distribution of welded joints of adjacent main reinforcement bars along the axial direction, preventing all main reinforcement joints from concentrating on the same cross-section. This staggered arrangement, based on the stress mechanism of reinforced concrete structures, effectively disperses the stress concentration effect in the connection zone. When the reinforcing cage is subjected to axial pressure or bending moment, the staggered joints allow for a gradual transition in the load transfer path, avoiding local yielding or brittle failure caused by abrupt stress changes at a single cross-section. Simultaneously, the staggered arrangement provides step-by-step operation space for welding, allowing welders to proceed according to... Welding is performed on the main reinforcement joints at different axial positions to avoid material performance degradation caused by the overlap of heat-affected zones of adjacent welds. This ensures that the shrinkage deformation of each weld is independent during cooling, reduces accumulated residual stress, and the staggered joints together with the subsequently wound stirrups form a spatial constraint system. The stirrups provide circumferential constraints on the staggered main reinforcement joints, suppressing the radial separation tendency of the welded joints during the stress process. This forms a three-dimensional stress skeleton with the main reinforcement and stirrups working in synergy, significantly improving the overall stiffness and ductility of the connection area. As a result, the mechanical properties of the segmented assembled steel cage are equivalent to those of the integrally formed steel cage, meeting the safety requirements of the cast-in-place pile structure.

[0023] Example 5: Figures 1-6 As shown, in step S4, the welding point of the main reinforcement of the top section steel cage 1 is located on the outside of the main reinforcement, and the welding point of the main reinforcement of the bottom section steel cage 2 is located on the inside of the main reinforcement. The welding length is not less than 10 times the diameter of the steel reinforcement. After the main reinforcement is welded, the stirrups reserved at the lower end of the top section steel cage 1 are wrapped around the connection area and tied and fixed. The working principle of the above technical solution is as follows: In this embodiment, for the working condition where the space outside the vibratory hammer 3 is limited and the steel cage cannot be rotated, an innovative alternating welding method is adopted. The welding points of the main reinforcement of the top section of the steel cage 1 are located on the outside of the main reinforcement, and the welding points of the main reinforcement of the bottom section of the steel cage 2 are located on the inside of the main reinforcement. This allows the welder to complete the welding of all the main reinforcements without rotating the steel cage. The welding on the outside facilitates the observation of the weld formation quality and the control of welding parameters. The welding on the inside uses the cylinder wall of the vibratory hammer 3 as a backing to ensure the quality of weld penetration. After the main reinforcement is welded, the stirrups reserved at the lower end of the top section of the steel cage 1 are wrapped around the connection area and tied and fixed. The stirrups not only constrain the position of the main reinforcements, but also generate pre-tightening force under the action of welding heat, enhancing the integrity of the connection area, and finally forming a reliable connection structure in which the main reinforcement and stirrups work together to bear the force.

[0024] Example 6: Figures 1-6 As shown, in step S4, the welded integral steel cage and vibratory hammer 3 are lifted, inserted into the pre-drilled pile hole, and vibrated and lowered. The working principle of the above technical solution is as follows: In this embodiment, the welded integral steel cage and the vibratory hammer 3 are kept in a fitted state and lifted as a whole. The rigid cylinder of the vibratory hammer 3 provides radial constraint on the steel cage throughout the process, preventing the long steel cage from bending or twisting due to its own weight during the hoisting process. After hoisting, the steel cage-vibratory hammer 3 assembly is directly inserted into the already drilled pile hole. The high-frequency vibration generated after the vibratory hammer 3 is started promotes the smooth sinking of the steel cage through the concrete. On the other hand, the vibration energy is evenly transmitted to the surface of the steel cage through the cylinder wall of the vibratory hammer 3, keeping the steel cage in a centered state in the concrete and avoiding displacement. This process realizes the integrated continuous operation of assembly, hoisting and lowering, reduces intermediate transfer links, improves construction efficiency and pile quality, and at the same time ensures the design position accuracy of the steel cage in the pile body.

[0025] Example 7: Figures 1-6 As shown, the triangular support assembly includes a platform support 4, the upper-middle part of the vibratory hammer 3 along its length is placed on the platform support 4, a support rod 6 is slidably connected inside the platform support 4, the support rod 6 is supported on the lower end of the platform plate 5, and the upper ends of the platform support 4 and the platform plate 5 are flush. The working principle of the above technical solution is as follows: In this embodiment, the platform support 4 and the platform plate 5 form a combined support structure. The vibratory hammer 3 is placed on the upper end of the platform support 4. The platform plate 5 is supported by the support rod 6 below the central opening of the platform support 4, forming a continuous support surface. When it is necessary to tie the stirrups in the connection area between the top section of the steel cage 1 and the bottom section of the steel cage 2, the support rod 6 is pulled out from the platform support 4, and the platform plate 5 falls and detaches, exposing the lower space of the connection area. The operator can then perform the stirrup threading and tying operation from below, which solves the problem of tying difficulties caused by the closed bottom space of the vibratory hammer 3. After the operation is completed, the support rod 6 is reinstalled to lift the platform plate 5 and restore the overall support function. This design achieves a dynamic balance between support function and operational convenience, and the full circumferential operation of the connection area can be completed without moving the vibratory hammer 3.

[0026] Example 8: As Figures 1-6 As shown, the platform support 4 is rotatably connected to two leg frames 7 on both sides. The leg frame 7 is provided with multiple locking blocks 8. The lower end of the leg frame 7 is rotatably connected to a foot plate 9. The foot plate 9 is provided with fixing holes 10. A lower connecting plate 11 and an upper connecting plate 12 are provided between the two leg frames 7. The end of the lower connecting plate 11 is fixed to one leg frame 7, and the upper connecting plate 12 is fixed to the other leg frame 7. The lower connecting plate 11 and the upper connecting plate 12 are arranged parallel to each other. The upper end of the lower connecting plate 11 is provided with multiple locking slots, and the hook provided at the front end of the upper connecting plate 12 is engaged in the locking slots. The working principle of the above technical solution is as follows: In this embodiment, the hinged combination of the leg frame 7 and the connecting plate forms a retractable triangular support system. When the two leg frames 7 are extended outward, the hooks of the upper connecting plate 12 are engaged with the slots at different positions of the lower connecting plate 11, forming a stable triangular support configuration at different heights to adapt to the leveling requirements of uneven sites. The foot plate 9 is anchored to the ground through the fixing hole 10, converting the horizontal thrust into ground pressure to prevent the support from slipping when the steel cage is installed. This structure can be folded and folded to reduce volume during transportation and can be quickly deployed on site to form a stable support. The rotatable connection between the leg frame 7 and the platform support 4 also allows for fine adjustment of the support angle according to the shape of the vibrating hammer 3, ensuring that the support force acts radially along the vibrating hammer 3, avoiding the generation of lateral component forces that cause deformation of the cylinder, and improving the adaptability and stability of the support system.

[0027] Example 9: Figures 1-6 As shown, the platform support 4 is rotatably connected to one end of the support plate 14, and the other end of the support plate 14 is fixed with a slide bracket 15. The slide bracket 15 is rotatably connected to the slide plate 16. The top section steel cage 1 and the bottom section steel cage 2 are slidably connected to the slide plate 16. The middle part of the support plate 14 is rotatably connected to the upper end of the inclined plate 13, and the lower end of the inclined plate 13 is engaged between the leg frame 7 and the locking block 8. The working principle of the above technical solution is as follows: In this embodiment, the sliding plate 16 provides continuous sliding support for the installation process of the top section of the reinforcing cage 1 and the bottom section of the reinforcing cage 2. When the reinforcing cage slides along the surface of the sliding plate 16, the arc-shaped transition section with the front end of the sliding plate 16 bends downward to guide the reinforcing cage to be smoothly installed on the outside of the vibrating hammer 3, avoiding impact jamming at the end of the vibrating hammer 3. The support plate 14 achieves angle adjustment through the engagement of the inclined plate 13 and the leg frame 7, thereby changing the height of the sliding plate 16 to adapt to the center height requirements of reinforcing cages of different diameters, ensuring that the axis of the reinforcing cage is precisely aligned with the axis of the vibrating hammer 3 cylinder. This auxiliary support system greatly reduces the installation resistance, realizes a light and smooth installation operation, and improves the assembly efficiency.

[0028] Example 10: As Figures 1-6 As shown, the platform support 4 is rotatably connected to one end of the arc-shaped pressure frame 17. The upper end of the arc-shaped pressure frame 17 presses on the connection area between the top section steel cage 1 and the bottom section steel cage 2. The other end of the arc-shaped pressure frame 17 is rotatably connected to the rotating plate 18. A locking plate 19 is fixed at the lower end of the rotating plate 18. A vertical plate 21 is fixed at the end of the platform support 4. The locking screw 20 passes through the locking plate 19 and is threaded into the screw hole 22 provided on the vertical plate 21. The working principle of the above technical solution: In this embodiment, the arc-shaped pressure frame 17 and the sliding plate 16 form an upper and lower clamping and limiting structure. During the welding process of the steel cage, the connection area between the top section of the steel cage 1 and the bottom section of the steel cage 2 is rigidly constrained. The inner arc surface of the arc-shaped pressure frame 17 fits with the outer contour of the steel cage. The locking screw 20 applies a moderate clamping force to counteract the displacement trend of the main reinforcement caused by welding heat deformation, ensuring that the lapped main reinforcement remains parallel and in close contact throughout the welding process, providing geometric guarantee for the formation of a high-quality weld. This limiting structure also prevents the weld from cracking due to accidental collision after the weld has cooled down. After the weld has cooled to a safe temperature, the arc-shaped pressure frame 17 is released, which not only ensures the welding quality but also avoids excessive constraint affecting the subsequent lowering of the steel cage, realizing the dual functions of precise control of the welding process and protection of the finished product. The locking screw 20 can be inserted into different screw holes 22 to change the pressing height of the arc-shaped pressure frame 17, and adapt to different models of top section steel cage 1 and bottom section steel cage 2.

[0029] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A method for assembling long steel reinforcement cages in sections on a vibratory hammer of a long spiral drilling rig, characterized in that, Includes the following steps: S1. Segmented processing of steel cage: The steel cage of the preset length is divided into two segments along the axial direction for processing to form a top section steel cage (1) and a bottom section steel cage (2). The bottom end of the top section steel cage (1) is reserved with stirrups. S2. Place the vibratory hammer (3) in position: Place the vibratory hammer (3) horizontally on the triangular support assembly; S3. Reinforcing cage with vibrating hammer (3): First, the top section reinforcing cage (1) is placed on the outside of the vibrating hammer (3), and then the bottom section reinforcing cage (2) is placed on the outside of the vibrating hammer (3). The main reinforcement joints of the two sections are staggered. S4. Welding the steel cage into a whole: Weld the main bars of the two steel cage sections on the outside of the vibrating hammer (3) to form a whole steel cage.

2. The method for segmented assembly of a long reinforcing cage on a vibratory hammer of a long spiral drilling rig according to claim 1, characterized in that, In step S1, the length of the top section steel cage (1) is 10 to 13 meters, and the length of the bottom section steel cage (2) is 13 to 16 meters.

3. The method for segmented assembly of a long reinforcing cage on a vibratory hammer of a long spiral drilling rig according to claim 1, characterized in that, In step S2, the height of the triangular support assembly is 0.7 to 1.0 meters, and the support position of the triangular support assembly is located in the upper middle region of the length direction of the vibratory hammer (3).

4. The method for segmented assembly of a long reinforcing cage on a vibratory hammer of a long spiral drilling rig according to claim 1, characterized in that, In step S3, the main reinforcement joints of the connection area of ​​the top section steel cage (1) and the bottom section steel cage (2) are staggered by a distance of 0.8 to 1.2 meters.

5. The method for segmented assembly of a long reinforcing cage on a vibratory hammer of a long spiral drilling rig according to claim 1, characterized in that, In step S4, the main reinforcement welding point of the top section steel cage (1) is located on the outside of the main reinforcement, and the main reinforcement welding point of the bottom section steel cage (2) is located on the inside of the main reinforcement. The welding length is not less than 10 times the diameter of the steel reinforcement. After the main reinforcement is welded, the stirrups reserved at the lower end of the top section steel cage (1) are wrapped around the connection area and tied and fixed.

6. The method for segmented assembly of a long reinforcing cage on a vibratory hammer of a long spiral drilling rig according to claim 5, characterized in that, In step S4, the welded integral steel cage and vibratory hammer (3) are lifted, inserted into the pile hole that has been drilled, and vibrated to lower it.

7. The method for segmented assembly of a long reinforcing cage on a vibratory hammer of a long spiral drilling rig according to claim 1, characterized in that, The triangular support assembly includes a platform support (4), the upper middle part of the vibratory hammer (3) is placed on the platform support (4) along its length, a support rod (6) is slidably connected inside the platform support (4), the support rod (6) is supported on the lower end of the platform plate (5), and the upper ends of the platform support (4) and the platform plate (5) are flush.

8. The method for segmented assembly of a long reinforcing cage on a vibratory hammer of a long spiral drilling rig according to claim 7, characterized in that, The platform support (4) is rotatably connected to two legs (7) on both sides. Multiple locking blocks (8) are provided on the legs (7). A foot plate (9) is rotatably connected to the lower end of the legs (7). A fixing hole (10) is provided on the foot plate (9). A lower connecting plate (11) and an upper connecting plate (12) are provided between the two legs (7). The end of the lower connecting plate (11) is fixed on one leg (7), and the upper connecting plate (12) is fixed on the other leg (7). The lower connecting plate (11) and the upper connecting plate (12) are arranged parallel to each other. Multiple slots are provided at the upper end of the lower connecting plate (11), and the hooks provided at the front end of the upper connecting plate (12) are engaged in the slots.

9. The method for segmented assembly of a long reinforcing cage on a vibratory hammer of a long spiral drilling rig according to claim 8, characterized in that, The platform support (4) is rotatably connected to one end of the support plate (14), and the other end of the support plate (14) is fixed with a slide bracket (15). The slide bracket (15) is rotatably connected to the slide plate (16). The top section steel cage (1) and the bottom section steel cage (2) are slidably connected to the slide plate (16). The middle part of the support plate (14) is rotatably connected to the upper end of the inclined plate (13), and the lower end of the inclined plate (13) is clamped between the leg frame (7) and the clamping block (8).

10. The method for segmented assembly of a long reinforcing cage on a vibratory hammer of a long spiral drilling rig according to claim 9, characterized in that, The platform support (4) is rotatably connected to one end of the arc-shaped pressure frame (17). The upper end of the arc-shaped pressure frame (17) presses on the connection area between the top section steel cage (1) and the bottom section steel cage (2). The other end of the arc-shaped pressure frame (17) is rotatably connected to the rotating plate (18). The lower end of the rotating plate (18) is fixed with a locking plate (19). The end of the platform support (4) is fixed with a vertical plate (21). The locking screw (20) passes through the locking plate (19) and is threaded into the screw hole (22) provided on the vertical plate (21).

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