A steel pipe combined column pile vertical adjustment guide device and construction method thereof

Abstract

The invention belongs to the technical field of building construction, and in particular to a vertical adjustment guide device for steel tube combined column piles and a construction method thereof. The steel tube concrete column is located above the PHC pile, the outer wall of the PHC pile is provided with a concrete bottom plate, the bottom of the concrete bottom plate is provided with an inclined groove, the inclined groove is used in conjunction with the PHC pile, the top of the concrete bottom plate is provided with a circular groove, the circular groove is communicated with the inclined groove, a steel adapter for adjusting the verticality of the steel tube concrete column is provided between the steel tube concrete column and the PHC pile; the tops of the two arc-shaped templates at the top of the concrete bottom plate are provided with a clamping assembly for clamping the steel tube concrete column; the outer wall of the arc-shaped template is provided with an installation assembly for installing the arc-shaped template; the problem that the upper and lower prefabricated column piles are currently fixed by bolts and welding, and the verticality of the upper steel tube concrete column often has a large deviation, which is difficult to meet the adjustment requirements, is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and relates to a steel pipe combined column pile vertical adjustment guide device and a construction method thereof. Background Art

[0002] The hybrid structure system is a new type of structural system that has developed rapidly in China in recent years. It is mainly used in high-rise and super-high-rise building structures. Compared with concrete structures, it has obvious advantages in reducing the deadweight of the structure, reducing the cross-sectional size of the structure, improving the mechanical performance of the structure, and accelerating the construction progress. Compared with pure steel structures, it has the characteristics of good fire resistance, small comprehensive steel consumption, and good comfort under wind load. Hybrid structures are widely used in high-rise buildings due to their superior performance.

[0003] In the large-span roof gridshell structure, many buildings use partial steel tube column structure, that is, the upper part of the structure uses steel tube concrete columns as the load-bearing components of the large-span roof to increase the plastic deformation capacity of the upper structure, and the lower part uses prestressed high-strength concrete pipe piles (PHC pipe piles) to reduce the amount of steel used and save economy. The steel tube concrete columns and PHC pipe piles are converted at the connection. However, what kind of conversion node structure should be used at the intersection of the upper steel tube concrete column and the lower PHC pile has always been the focus of attention. The traditional method often uses bolts and welding to fix the upper and lower prefabricated columns and piles, and the verticality of the upper steel tube concrete column often has a large deviation, which is difficult to meet the adjustment requirements. Therefore, a steel adapter is needed, especially the function of adjusting the verticality of the upper column when connecting the upper and lower prefabricated columns and piles. Summary of the invention

[0004] In view of this, the present invention provides a steel tube combined column pile vertical adjustment guide device and a construction method thereof in order to solve the problem that the upper and lower prefabricated columns are currently fixed by bolts and welding, and the verticality of the upper steel tube concrete column often has a large deviation and is difficult to meet the adjustment requirements.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A vertical adjustment guide device for a steel tube combined column pile, wherein the PHC pile and the steel tube concrete column are prefabricated pile columns, the steel tube concrete column is located above the PHC pile, a concrete bottom plate is arranged on the outer wall of the connection between the steel tube concrete column and the PHC pile, an inclined groove for limiting and fixing the PHC pile is arranged at the bottom of the concrete bottom plate, a circular groove for limiting and fixing the steel tube concrete column is arranged at the top of the concrete bottom plate, and a steel adapter for adjusting the verticality of the steel tube concrete column is arranged between the steel tube concrete column and the PHC pile;

[0007] Two symmetrically arranged arc-shaped templates are arranged on the top of the concrete bottom plate, a casting hole is opened on one side of the arc-shaped template, the two arc-shaped templates are arranged on both sides of the steel tube concrete column respectively, and a clamping assembly for clamping the steel tube concrete column is arranged on the top of the arc-shaped template;

[0008] The outer wall of the arc-shaped template is provided with a mounting assembly for mounting the arc-shaped template.

[0009] Furthermore, the steel adapter includes a rotating disk and a vertical rod. Two symmetrically arranged side blocks are fixedly connected to the top of the rotating disk. A rotating shaft is fixedly connected between the two side blocks. The rotating shaft rotates and passes through the vertical rod. A cavity is opened on the upper part of the vertical rod. A sliding rod slides through the inside of the cavity. A vertical groove for plugging in the vertical rod is opened at the bottom of the steel tube concrete column. The vertical groove is used in conjunction with the vertical rod. A No. 1 spring is fixedly connected between the bottom of the sliding rod and the bottom inner wall of the cavity. The design of the rotating disk and the side blocks allows flexible adjustment according to the inclination angle of the PHC pile to ensure that the vertical rod can accurately dock with the vertical groove of the steel tube concrete column, thereby improving installation accuracy. The addition of the No. 1 spring enables the sliding rod to automatically reset, which is convenient for multiple uses.

[0010] Furthermore, a plurality of plug rods are fixedly connected to the bottom of the sliding rod, a plurality of slots are provided on the outer wall of the rotating shaft, a plurality of holes are provided on the bottom inner wall of the cavity, and the plug rods are movably inserted into the holes and the slots in turn. The coordinated use of the plug rods and the slots further enhances the connection stability between the vertical rod and the rotating shaft, prevents loosening during lifting or pouring, and improves the safety of the overall structure.

[0011] Furthermore, two symmetrically arranged trapezoidal grooves are provided on the inner wall of the bottom of the cavity, and a connected inclined hole is provided on the inner wall of one side of the trapezoidal groove. An inclined block is slidably connected to the inside of the inclined hole. The inclined block is inclined, and trapezoidal blocks are fixedly connected to both sides of the bottom of the sliding rod. The trapezoidal blocks and the inclined blocks are used in coordination with each other. The inclined blocks slide in the inclined holes and are used in coordination with the rotating shaft. Driven by the sliding rod, the trapezoidal blocks push the inclined blocks into the inclined holes, and then clamp the rotating shaft, which effectively prevents accidental rotation of the rotating shaft and provides a more stable foundation for the installation of steel tube concrete columns.

[0012] Furthermore, two symmetrically arranged strip cavities are provided inside the vertical rod, and a sleeve is slidably connected inside the strip cavity, and a push rod is fixedly connected to the top of the sleeve, and the top of the push rod extends to the inside of the trapezoidal groove and cooperates with the inclined surface of the trapezoidal block for use, and an extension rod is slidably passed through the bottom of the sleeve, and a No. 2 spring is fixedly connected between the top of the extension rod and the top inner wall of the sleeve, and the bottom of the extension rod passes through the vertical rod and is fixedly connected to a spherical block, which is in contact with the rotating disk. The combined design of the sleeve, the push rod, the extension rod and the spherical block provides additional stabilizing force when the trapezoidal block moves downward, and the close contact between the spherical block and the rotating disk further stabilizes the position of the rotating disk, thereby enhancing the stability of the overall structure.

[0013] Furthermore, the clamping assembly includes a clamping plate slidably connected to the top of the arc-shaped template, one end of the clamping plate is provided with two symmetrically arranged positioning grooves, and the other end of the clamping plate is fixedly connected with two symmetrically arranged positioning rods, which are engaged with the corresponding positioning grooves. The clamping plate can conveniently adjust the vertical state of the steel tube concrete column through the cooperation of the positioning grooves and the positioning rods, thereby ensuring the accurate connection between the steel tube concrete column and the PHC pile, and improving the construction efficiency at the same time.

[0014] Furthermore, the installation assembly includes an ear plate fixedly connected to the outer wall of the arc-shaped template, the inner thread of the ear plate is penetrated by two symmetrically arranged fixing screws, the top of the concrete bottom plate is provided with four first threaded holes symmetrically arranged in pairs, the first threaded holes are threadedly connected with the fixing screws, and the outer wall thread sleeve of the fixing screws is provided with nuts. The design of the ear plate, fixing screws and nuts enables the arc-shaped template to be firmly fixed to the concrete bottom plate, and the side plate is connected to the concrete bottom plate through the mounting screws and the second threaded holes. The whole installation process is simple and fast, which improves the construction efficiency. The addition of the push bolts provides convenience for the adjustment of the clamping plate.

[0015] Furthermore, four second threaded holes that are symmetrical in pairs are opened on the top of the concrete base plate. The outer side of the arc-shaped formwork is fixedly connected with a fixing rod, and the end of the fixing rod away from the arc-shaped formwork is fixedly connected with a side plate. Rectangular blocks are fixedly connected to both sides of the side plates. The internal threads of the rectangular blocks are penetrated by mounting screws, and the mounting screws are threadedly connected to the second threaded holes. The internal threads of the side plates are penetrated by push bolts, and one end of the push bolts is rotatably connected to one side of the clamping plate.

[0016] A construction method of a steel pipe combined column pile vertical adjustment guide device specifically comprises the following steps:

[0017] S1. Preparation stage:

[0018] Insert the PHC pile into the soil in advance and install the concrete base plate; according to the inclination direction of the PHC pile, install and adjust the steel adapter to make it fit with the top of the PHC pile;

[0019] S2. Install side panels and curved formwork:

[0020] Install side panels and curved formwork on top of the concrete slab to prepare for the hoisting and pouring of the steel tube concrete columns;

[0021] S3. Adjust the rotating disk and side blocks:

[0022] Rotate the side block to drive the rotating disk to rotate until the bottom surface of the rotating disk fits tightly against the top of the PHC pile;

[0023] S4. Hoisting of concrete-filled steel tube columns:

[0024] Lift the CFST columns to the top of the steel adapter, making sure the vertical rods are engaged with the vertical slots;

[0025] S5. Locking mechanism operation:

[0026] The sliding rod pushes the trapezoidal block and the insertion rod downward under the action of gravity, and the trapezoidal block enters the trapezoidal groove, pushing the inclined block into the inclined hole to clamp the rotating shaft, while the insertion rod passes through the insertion hole and enters the slot to fix the rotating shaft;

[0027] The bottom of the trapezoidal block pushes the push rod downward, driving the sleeve, the extension rod and the spherical block downward. The bottom of the spherical block contacts the surface of the rotating disk to enhance stability.

[0028] S6. Adjust the vertical state of the steel tube concrete column:

[0029] The push bolt is rotated to drive the clamping plate to move horizontally, clamp and adjust the vertical state of the steel tube concrete column; positioning is performed through the positioning rod and positioning groove to ensure that a closed space is formed after the clamping plate is fitted;

[0030] S7. Pouring concrete:

[0031] Use the pouring holes to pour concrete into the confined space to ensure a stable connection between the CFST columns and the PHC piles;

[0032] S8. Remove the formwork and side panels:

[0033] After the concrete column is formed, remove the external curved formwork and side panels to complete the positioning and installation of the steel tube concrete column.

[0034] The steel pipe combined column pile vertical adjustment guide device disclosed in the present invention has the following beneficial effects:

[0035] 1. Improve installation accuracy and stability:

[0036] The coordination of the chute and the PHC pile, as well as the adjustment mechanism of the rotating disk and the side block, ensures that the steel tube concrete column can be installed vertically on the inclined PHC pile, improving the installation accuracy and stability. The multiple locking mechanisms such as the trapezoidal block, the plug rod, the sleeve and the spherical block further enhance the stability of the connection parts and prevent displacement during the pouring process.

[0037] 2. Simplify the construction process:

[0038] The reasonable structural design facilitates on-site installation and disassembly, reducing construction difficulty and time cost. The use of curved formwork and side panels makes the concrete pouring process more convenient and improves construction efficiency.

[0039] 3. Enhance connection strength:

[0040] The steel tube concrete columns are tightly connected to the PHC piles by pouring concrete to form an integral structure, which enhances the strength and durability of the connection.

[0041] 4. Strong adaptability:

[0042] The system can flexibly cope with PHC piles with different inclination angles and has strong adaptability and versatility.

[0043] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0045] Figure 1 It is a three-dimensional structural schematic diagram of a vertical adjustment guide device for a steel pipe combined column pile of the present invention;

[0046] Figure 2 It is a three-dimensional structural schematic diagram of a steel pipe combined column pile vertical adjustment guide device of the present invention without the side plate;

[0047] Figure 3 An exploded view of a steel tube concrete column and a PHC pile in a vertical adjustment guide device for a steel tube combined column pile of the present invention;

[0048] Figure 4 It is a three-dimensional structural schematic diagram of a rotating disk and a vertical rod in a vertical adjustment guide device for a steel pipe combined column pile of the present invention;

[0049] Figure 5It is a three-dimensional cross-sectional view of a vertical rod in a vertical adjustment guide device for a steel pipe combined column pile of the present invention;

[0050] Figure 6 It is a three-dimensional cross-sectional view of a vertical rod and a rotating shaft in a vertical adjustment guide device for a steel pipe combined column pile of the present invention;

[0051] Figure 7 It is a three-dimensional structural schematic diagram of a sliding rod and a trapezoidal block in a vertical adjustment guide device for a steel pipe combined column pile of the present invention;

[0052] Figure 8 It is an exploded view of a sleeve and an extension rod in a vertical adjustment guide device for a steel pipe combined column pile of the present invention;

[0053] Fig. 9 The schematic diagram of the assembly of the side plate and the clamping plate in the vertical adjustment guide device of the steel pipe combined column pile of the present invention is shown in FIG. Figure 1 ;

[0054] Fig.10 The schematic diagram of the assembly of the side plate and the clamping plate in the vertical adjustment guide device of the steel pipe combined column pile of the present invention is shown in FIG. Figure 2 .

[0055] In the figure: 1, PHC pile; 2, concrete base plate; 3, steel tube concrete column; 4, side plate; 5, first threaded hole; 6, second threaded hole; 7, vertical rod; 8, round groove; 9, vertical groove; 10, inclined groove; 11, rotating shaft; 12, side block; 13, rotating disk; 14, sliding rod; 15, trapezoidal groove; 16, pushing rod; 17, extension rod; 18, spherical block; 19, inclined hole; 20, inclined block; 21. Slot; 22. Cavity; 23. Socket; 24. Spring No. 1; 25. Trapezoidal block; 26. Insert rod; 27. Sleeve; 28. Spring No. 2; 29. ​​Positioning rod; 30. Arc template; 31. Positioning groove; 32. Casting hole; 33. Ear plate; 34. Nut; 35. Fixing screw; 36. Mounting screw; 37. Rectangular block; 38. Fixing rod; 39. Push bolt; 40. Clamping plate. DETAILED DESCRIPTION

[0056] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0057] Reference Figure 1-10A vertical adjustment guide device for a steel tube composite column pile. The PHC pile 1 and the steel tube concrete column 3 are prefabricated piles. After the PHC pile 1 is squeezed into the soil, the upper part will tilt to varying degrees, which affects the installation of the upper steel tube concrete column 3, resulting in insufficient verticality of the steel tube composite column pile after the final assembly. For this purpose, the steel tube composite column pile vertical adjustment guide device is designed.

[0058] The steel tube concrete column 3 is located above the PHC pile 1. The outer wall of the connection between the steel tube concrete column 3 and the PHC pile 1 is provided with a concrete base plate 2. The bottom of the concrete base plate 2 is provided with an inclined groove 10 for limiting and fixing the PHC pile 1. The inclined groove 10 is used in conjunction with the PHC pile 1. The top of the concrete base plate 2 is provided with a circular groove 8 for limiting and fixing the steel tube concrete column 3. The circular groove 8 is connected to the inclined groove 10. A steel adapter for adjusting the verticality of the steel tube concrete column 3 is provided between the steel tube concrete column 3 and the PHC pile 1.

[0059] The steel adapter comprises a rotating disk 13 and a vertical rod 7. The top of the rotating disk 13 is fixedly connected with two symmetrically arranged side blocks 12. A rotating shaft 11 is fixedly connected between the two side blocks 12. The rotating shaft 11 rotates and penetrates the vertical rod 7. A cavity 22 is provided on the upper part of the vertical rod 7. A sliding rod 14 slides through the inside of the cavity 22. A vertical groove 9 is provided at the bottom of the steel tube concrete column 3. The vertical groove 9 is used in conjunction with the vertical rod 7. A No. 1 spring 24 is fixedly connected between the bottom of the sliding rod 14 and the bottom inner wall of the cavity 22. A plurality of plug rods 26 are fixedly connected to the bottom of the sliding rod 14. A plurality of slots 21 are provided on the outer wall of the rotating shaft 11. A plurality of plug holes 23 are provided on the bottom inner wall of the cavity 22. Both the plug holes 23 and the slots 21 are used in conjunction with the plug rods 26. Two symmetrically arranged trapezoidal slots 15 are provided on the bottom inner wall of the cavity 22. The inner wall of one side of the trapezoidal slot 15 is provided with a corresponding The inclined hole 19 is connected, and an inclined block 20 is slidably connected inside the inclined hole 19. The inclined block 20 is inclined. Trapezoidal blocks 25 are fixedly connected to both sides of the bottom of the sliding rod 14. The trapezoidal block 25 is used in conjunction with the inclined block 20. The inclined block 20 slides in the inclined hole 19 and is used in conjunction with the rotating shaft 11. Two symmetrically arranged strip cavities are opened inside the vertical rod 7. A sleeve 27 is slidably connected inside the strip cavity. The top of the sleeve 27 is fixedly connected to the push rod 16. The top of the push rod 16 extends to the inside of the trapezoidal groove 15 and is used in conjunction with the inclined surface of the trapezoidal block 25. The bottom of the sleeve 27 slides through an extension rod 17. A No. 2 spring 28 is fixedly connected between the top of the extension rod 17 and the top inner wall of the sleeve 27. The bottom of the extension rod 17 penetrates the vertical rod 7 and is fixedly connected to a spherical block 18, which is in conjunction with the rotating disk 13.

[0060] Two symmetrically arranged arc formworks 30 are provided on the top of the concrete base plate 2, a casting hole 32 is opened on one side of the arc formwork 30, the two arc formworks 30 are respectively arranged on both sides of the steel tube concrete column 3, and a clamping assembly for clamping the steel tube concrete column 3 is provided on the top of the arc formwork 30. The clamping assembly includes a clamping plate 40 slidably connected to the top of the arc formwork 30, one end of the clamping plate 40 is opened with two symmetrically arranged positioning grooves 31, and the other end of the clamping plate 40 is fixedly connected with two symmetrically arranged positioning rods 29, and the positioning rods 29 are clamped with the corresponding positioning grooves 31.

[0061] The outer wall of the arc formwork 30 is provided with an installation component for installing the arc formwork 30, and the installation component includes an ear plate 33 fixedly connected to the outer wall of the arc formwork 30, and the internal thread of the ear plate 33 is penetrated by two symmetrically arranged fixing screws 35, and the top of the concrete base plate 2 is provided with four first threaded holes 5 symmetrically arranged in pairs, and the first threaded holes 5 are threadedly connected to the fixing screws 35, and the outer wall thread sleeve of the fixing screws 35 is provided with a nut 34, and the top of the concrete base plate 2 is provided with a plurality of four second threaded holes 6 symmetrically arranged in pairs, and the outer side of the arc formwork 30 is fixedly connected with a fixing rod 38, and the two fixing rods 38 on the outer sides of the two arc formworks 30 are symmetrically arranged, and the end of the fixing rod 38 away from the arc formwork 30 is fixedly connected with the side plate 4, and the two sides of the side plate 4 are fixedly connected with a rectangular block 37, and the internal thread of the rectangular block 37 is penetrated by a mounting screw 36, and the mounting screw 36 is threadedly connected to the second threaded hole 6, and the internal thread of the side plate 4 is penetrated by a push bolt 39, and one end of the push bolt 39 is rotatably connected to one side of the clamping plate 40.

[0062] When the steel tube combined column pile vertical adjustment guide device is used, the PHC pile 1 is pre-inserted into the soil, and the concrete base plate 2 can be installed on the surface at this time. Since the PHC pile 1 is in an inclined state, if the steel tube concrete column 3 is continued to be installed, the steel tube concrete column 3 cannot be installed vertically. At this time, the inclined groove 10 cooperates with the PHC pile 1, and the steel adapter is placed on the top of the PHC pile 1. The side plate 4 and the arc template 30 are installed on the top of the concrete base plate 2, which is convenient for the subsequent hoisting of the steel tube concrete column 3;

[0063] According to the inclination direction of the PHC pile 1, the rotation direction of the rotating disk 13 is made consistent with the inclination direction of the PHC pile 1, that is, by pushing the side block 12, the side block 12 drives the rotating disk 13 and the rotating shaft 11 to rotate, and at this time, it can be ensured that the bottom surface of the rotating disk 13 is in contact with the top of the PHC pile 1, thereby improving stability, and the vertical rod 7 is always in a vertical state; further, since the rotating shaft 11 rotates and penetrates the vertical rod 7, the rotating disk 13 and the rotating shaft 11 and the side block 12 are fixedly connected, then the vertical rod 7 and the rotating disk 13 are rotationally connected, and the PHC pile 1 below can only tilt in one direction. By adjusting the position of the rotating disk 13, the inclination angle of the rotating disk 13 can be made consistent with the PHC pile 1, and then the vertical rod 7 is adjusted to make the vertical rod 7 vertical relative to the steel tube concrete column 3.

[0064] When the angle adjustment of the side block 12 is completed, the steel tube concrete column 3 is hoisted to the top of the steel adapter, and the vertical rod 7 is inserted into the vertical groove 9 so that the vertical rod 7 is engaged with the vertical groove 9 to ensure the stability of the connection between the vertical rod 7 and the steel tube concrete column 3. At this time, the sliding rod 14 is pushed under the action of gravity, and the sliding rod 14 drives the two trapezoidal blocks 25 and multiple insertion rods 26 to move downward, and the trapezoidal block 25 enters the interior of the trapezoidal groove 15. At this time, the trapezoidal block 25 presses the inclined block 20 to push the inclined block 20 into the interior of the inclined hole 19. One end of the inclined block 20 clamps the outer wall of the rotating shaft 11 to prevent the rotating shaft 11 from rotating. At the same time, multiple insertion rods 26 can pass through the insertion hole 23 and enter the interior of the slot 21 to fix the rotating shaft 11 again;

[0065] At the same time, the bottom of the trapezoidal block 25 can push the push rod 16 to move downward, the push rod 16 drives the sleeve 27 to move downward, the sleeve 27 drives the extension rod 17 to move downward and continuously squeezes the second spring 28, the extension rod 17 drives the spherical block 18 to move downward, the bottom of the spherical block 18 conflicts with the surface of the rotating disk 13, and the inclination of the rotating disk 13 can be stabilized again at this time;

[0066] At this time, the push bolt 39 can be rotated to drive the clamping plate 40 to move horizontally. The two clamping plates 40 clamp the steel tube concrete column 3 and continuously adjust the vertical state of the steel tube concrete column 3. The two clamping plates 40 can also be positioned by the positioning rod 29 and the positioning groove 31. When the two clamping plates 40 are fitted together, the space between the steel tube concrete column 3 and the PHC pile 1 is a closed space. At this time, the pouring hole 32 can be used to pour concrete into the closed space to ensure that the steel tube concrete column 3 and the PHC pile 1 are connected stably. After the concrete column is formed, the external arc template 30 and the side plate 4 are removed together to complete the function of positioning the steel tube concrete column 3.

[0067] A construction method of a steel pipe combined column pile vertical adjustment guide device specifically comprises the following steps:

[0068] S1. Preparation stage:

[0069] Insert the PHC pile 1 into the soil in advance and install the concrete base plate 2; install and adjust the steel adapter according to the inclination direction of the PHC pile 1 so that it fits the top of the PHC pile 1;

[0070] S2. Install the side panels 4 and the curved template 30:

[0071] Install the side plates 4 and the arc-shaped formwork 30 on the top of the concrete bottom plate 2 to prepare for the hoisting and pouring of the prefabricated steel tube concrete column 3;

[0072] S3, adjust the rotating disk 13 and the side block 12:

[0073] Rotate the side block 12 to drive the rotating disk 13 to rotate until the bottom surface of the rotating disk 13 is tightly fitted with the top of the PHC pile 1;

[0074] S4. Hoisting prefabricated steel tube concrete column 3:

[0075] Lift the prefabricated steel tube concrete column 3 to the top of the steel adapter, ensuring that the vertical rod 7 is engaged with the vertical groove 9;

[0076] S5. Locking mechanism operation:

[0077] The sliding rod 14 pushes the trapezoidal block 25 and the insertion rod 26 downward under the action of gravity, and the trapezoidal block 25 enters the trapezoidal groove 15, pushing the inclined block 20 into the inclined hole 19 to clamp the rotating shaft 11, while the insertion rod 26 passes through the insertion hole 23 and enters the slot 21 to fix the rotating shaft 11;

[0078] The bottom of the trapezoidal block 25 pushes the push rod 16 downward, driving the sleeve 27, the extension rod 17 and the spherical block 18 downward, and the bottom of the spherical block 18 contacts the surface of the rotating disk 13 to enhance stability;

[0079] S6. Adjust the vertical state of the prefabricated steel tube concrete column 3:

[0080] The push bolt 39 is rotated to drive the clamping plate 40 to move horizontally, clamp and adjust the vertical state of the prefabricated steel tube concrete column 3; positioning is performed through the positioning rod 29 and the positioning groove 31 to ensure that the clamping plate 40 is fitted to form a closed space;

[0081] S7. Pouring concrete:

[0082] Concrete is poured into the confined space by using the pouring holes 32 to ensure a stable connection between the prefabricated steel tube concrete column 3 and the PHC pile 1;

[0083] S8. Remove the template and side panel 4:

[0084] After the concrete column is formed, the outer arc-shaped template 30 and the side panels 4 are removed to complete the positioning and installation of the prefabricated steel tube concrete column 3.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A vertical adjustment guide device for a steel tube composite column pile, wherein a steel tube concrete column (3) is located above a PHC pile (1), characterized in that: The outer wall of the connection between the steel tube concrete column (3) and the PHC pile (1) is provided with a concrete bottom plate (2); a steel adapter for adjusting the verticality of the steel tube concrete column (3) is provided between the steel tube concrete column (3) and the PHC pile (1); the steel adapter comprises a rotating disk (13) and a vertical rod (7); the top of the rotating disk (13) is fixedly connected to two symmetrically arranged side blocks (12); a rotating shaft (11) is fixedly connected between the two side blocks (12); the rotating shaft (11) rotates and penetrates the vertical rod (7); a cavity (22) is opened at the top of the vertical rod (7) ), a sliding rod (14) is slidably penetrated inside the cavity (22), a vertical groove (9) for inserting the vertical rod (7) is provided at the bottom of the steel tube concrete column (3), and a No. 1 spring (24) is fixedly connected between the bottom of the sliding rod (14) and the bottom inner wall of the cavity (22); a plurality of insertion rods (26) are fixedly connected to the bottom of the sliding rod (14), a plurality of slots (21) are provided on the outer wall of the rotating shaft (11), and a plurality of insertion holes (23) are provided on the bottom inner wall of the cavity (22), and the insertion rods (26) are movably inserted in the insertion holes (23) and the slots (21) in sequence; The bottom inner wall of the cavity (22) is provided with two symmetrically arranged trapezoidal grooves (15), one side inner wall of the trapezoidal groove (15) is provided with a communicating inclined hole (19), the interior of the inclined hole (19) is slidably connected with an inclined block (20), the inclined block (20) is inclinedly arranged, both sides of the bottom of the sliding rod (14) are fixedly connected with trapezoidal blocks (25), the trapezoidal blocks (25) and the inclined blocks (20) are used in cooperation with each other, and the inclined blocks (20) slide in the inclined hole (19) and are used in cooperation with the rotating shaft (11); Two symmetrically arranged strip cavities are provided inside the vertical rod (7), a sleeve (27) is slidably connected inside the strip cavity, a push rod (16) is fixedly connected to the top of the sleeve (27), the top of the push rod (16) extends to the inside of the trapezoidal groove (15) and is used in cooperation with the inclined surface of the trapezoidal block (25), an extension rod (17) is slidably penetrated at the bottom of the sleeve (27), a No. 2 spring (28) is fixedly connected between the top of the extension rod (17) and the inner wall of the top of the sleeve (27), the bottom of the extension rod (17) penetrates the vertical rod (7) and is fixedly connected to a spherical block (18), and the spherical block (18) is in contact with the rotating disk (13).

2. A steel pipe combined column pile vertical adjustment guide device according to claim 1, characterized in that: Two symmetrically arranged arc-shaped templates (30) are arranged on the top of the concrete base plate (2); a casting hole (32) is opened on one side of the arc-shaped template (30); the two arc-shaped templates (30) are arranged on both sides of the steel tube concrete column (3), respectively; a clamping component for clamping the steel tube concrete column (3) is arranged on the top of the arc-shaped template (30); and an installation component for installing the arc-shaped template (30) is arranged on the outer wall of the arc-shaped template (30).

3. A steel pipe combined column pile vertical adjustment guide device according to claim 2, characterized in that: The clamping assembly comprises a clamping plate (40) slidably connected to the top of the arc-shaped template (30), one end of the clamping plate (40) is provided with two symmetrically arranged positioning grooves (31), and the other end of the clamping plate (40) is fixedly connected with two symmetrically arranged positioning rods (29), and the positioning rods (29) are clamped with corresponding positioning grooves (31).

4. A steel pipe combined column pile vertical adjustment guide device according to claim 3, characterized in that: The mounting assembly comprises an ear plate (33) fixedly connected to the outer wall of the arc-shaped template (30), the inner thread of the ear plate (33) being penetrated by two symmetrically arranged fixing screws (35), the top of the concrete base plate (2) being provided with four first threaded holes (5) arranged symmetrically in pairs, the first threaded holes (5) being threadedly connected to the fixing screws (35), and the outer wall of the fixing screw (35) being threadedly sleeved with a nut (34).

5. The vertical adjustment guide device for steel pipe combined column pile according to claim 4, characterized in that: A plurality of four second threaded holes (6) are provided on the top of the concrete bottom plate (2) and are symmetrical in pairs. The outer side of the arc-shaped template (30) is fixedly connected to a fixing rod (38). One end of the fixing rod (38) away from the arc-shaped template (30) is fixedly connected to a side plate (4). Rectangular blocks (37) are fixedly connected to both sides of the side plate (4). An internal thread of the rectangular block (37) is penetrated by a mounting screw (36). The mounting screw (36) is threadedly connected to the second threaded hole (6). A pushing bolt (39) is penetrated by the internal thread of the side plate (4). One end of the pushing bolt (39) is rotatably connected to one side of the clamping plate (40).

6. A steel pipe combined column pile vertical adjustment guide device according to claim 5, characterized in that: The bottom of the concrete base plate (2) is provided with an inclined groove (10) for limiting and fixing the PHC pile (1), and the top of the concrete base plate (2) is provided with a circular groove (8) for limiting and fixing the steel tube concrete column (3), and the circular groove (8) is connected to the inclined groove (10).

7. The construction method of the steel pipe composite column pile vertical adjustment guide device according to claim 5 or 6, characterized in that: The specific steps include: S1. Preparation stage: Insert the PHC pile (1) into the soil in advance and install the concrete base plate (2); install and adjust the steel adapter according to the inclination direction of the PHC pile (1) so that it fits with the top of the PHC pile (1); S2. Install the side panels (4) and the curved template (30): Installing side plates (4) and curved formwork (30) on the top of the concrete base plate (2) to prepare for the hoisting and pouring of the steel tube concrete column (3); S3. Adjust the rotating disk (13) and the side block (12): Rotate the side block (12) to drive the rotating disk (13) to rotate until the bottom surface of the rotating disk (13) is tightly fitted with the top of the PHC pile (1); S4. Hoisting of concrete-filled steel tube columns (3): Lift the steel tube concrete column (3) to the top of the steel adapter, ensuring that the vertical rod (7) is engaged with the vertical groove (9); S5. Locking mechanism operation: The sliding rod (14) pushes the trapezoidal block (25) and the insertion rod (26) downward under the action of gravity, and the trapezoidal block (25) enters the trapezoidal groove (15), pushing the inclined block (20) into the inclined hole (19) to clamp the rotating shaft (11), while the insertion rod (26) passes through the insertion hole (23) and enters the slot (21) to fix the rotating shaft (11); The bottom of the trapezoidal block (25) pushes the push rod (16) downward, driving the sleeve (27), the extension rod (17) and the spherical block (18) downward, and the bottom of the spherical block (18) contacts the surface of the rotating disk (13), thereby enhancing stability; S6. Adjust the vertical state of the steel tube concrete column (3): The push bolt (39) is rotated to drive the clamping plate (40) to move horizontally, clamp and adjust the vertical state of the steel tube concrete column (3); positioning is performed through the positioning rod (29) and the positioning groove (31) to ensure that the clamping plate (40) is fitted to form a closed space; S7. Pouring concrete: Concrete is poured into the confined space through the pouring hole (32) to ensure a stable connection between the steel tube concrete column (3) and the PHC pile (1); S8. Remove the formwork and side panels (4): After the concrete column is formed, the external arc-shaped template (30) and the side plate (4) are removed to complete the positioning and installation of the steel tube concrete column (3).

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