A steel concrete column and cap integrated casting construction method

Abstract

The present application relates to the technical field of pre-buried construction of basement steel columns, and specifically to an integrated casting construction method for steel-concrete columns and caps, comprising the following steps: S1, measuring the installation positions of the steel columns and anchor fixing brackets, and marking them by spraying red paint; S2, tying the steel bars at the bottom of the cap at the bottom of the installation position; S3, setting an anchor fixing bracket for installing the steel columns, and installing and placing the anchor fixing bracket according to the measurement and positioning records; S4, spot welding the anchor fixing bracket to the steel bars at the bottom of the cap or the steel bars at the pile head of the cap with auxiliary steel bars; S5, hoisting the steel columns to the top of the anchor fixing bracket by a tower crane, and assisting in positioning and installation by multiple personnel during the hoisting process, and hoisting the steel columns to the upper surface of the anchor fixing bracket; S6, steel bar operators tie the vertical steel bars and stirrups on the outside of the steel columns, and strictly control the range of the column stirrups to ensure the effect of the column concrete after molding, and then pouring.

Description

Technical Field

[0001] The present application relates to the technical field of pre-buried construction of basement steel columns, and in particular to an integrated casting construction method of steel concrete columns and caps. Background Art

[0002] The prior art generally adopts a secondary pouring method of the cap for the casting of steel-concrete columns, which mainly refers to a method of pouring concrete in stages during the construction of the foundation cap of the steel-concrete column.

[0003] The specific implementation process is as follows: First pouring: pouring to a certain height lower than the design elevation to reserve space for subsequent steel column installation and adjustment. After the concrete reaches a certain strength, necessary inspections and adjustments are carried out to ensure that the flatness and elevation of the pouring surface meet the requirements; Installation and adjustment of steel columns: placing steel pads or seat mortar pads on the concrete surface of the first pouring as support for the steel columns, accurately correcting the elevation and verticality of the steel columns to ensure installation accuracy; Second pouring: After the steel columns are corrected, a second concrete pouring is carried out to fill the gap between the steel column feet and the pedestal. When pouring, attention should be paid to the density of the concrete and the combination with the first pouring surface to ensure that no leakage or cracks occur.

[0004] However, the secondary pouring method seriously affects the construction period and the quality is difficult to control. Therefore, a steel concrete column and pedestal integrated pouring construction method is needed. Summary of the invention

[0005] In view of the shortcomings of the existing technology, the purpose of this application is to provide a steel-concrete column and pedestal integrated casting construction method to solve the technical problems in the existing technology that the secondary casting method seriously affects the construction period and the quality is difficult to control.

[0006] The above-mentioned object of the present application is achieved through the following technical solution: a method for integrated pouring construction of steel-concrete columns and caps, comprising the following steps:

[0007] S1. Use the total station to lay out the axis, lay out the steel columns, mark the column area, spray red paint to mark, measure and lay out the plane position and elevation according to the design drawing elevation, ensure the accuracy of the elevation and plane, and ensure that it is within the allowable error range of the specification;

[0008] S2. Tie the steel bars at the bottom of the cap according to the design drawings;

[0009] S3. Set up an anchor bolt fixing bracket for installing the steel column, and install and place the anchor bolt fixing bracket according to the measurement and positioning records;

[0010] S4. Use auxiliary steel bars to spot weld the anchor bolt fixing bracket to the steel bars at the bottom of the cap or the steel bars at the pile head of the cap to prevent the bracket from moving or deviating;

[0011] S5. Use a tower crane to hoist the steel column to the top of the anchor bolt fixing bracket. During the hoisting process, multiple personnel assist in positioning and installation. Two personnel make fine adjustments to the position of the steel column during the hoisting process and adjust it to the upper surface of the anchor bolt fixing bracket. One person directs the tower crane to make slow adjustments. After hoisting it to the anchor bolt fixing bracket, a total station is used to check the horizontal position and elevation.

[0012] S6. After the steel column is corrected and verified, the reinforcement workers will tie up the vertical reinforcement and stirrups on the outside of the steel column and strictly control the range of the column stirrups to ensure the effect of the column concrete after molding, and then pour it from the opening on the top surface of the steel column.

[0013] By adopting the above technical scheme, the purpose of integrated construction of the embedded column foot and the pedestal is achieved through the anchor bolt fixing bracket. After the anchor bolt fixing bracket and the steel column are cast together with the pedestal, they can directly enter the next process, which shortens the construction period and improves the quality. The integrated construction of the steel column and the pedestal ensures the one-time forming of the bottom construction of the steel concrete column, better improves the stiffness and overall stability of the node, and avoids the unstable structure caused by the cutting of the steel column bottom plate and column reinforcement due to the deviation of the column reinforcement in the later stage. At the same time, the traditional practice of casting the pedestal in two times is abandoned, which improves the construction quality and speeds up the construction period.

[0014] Furthermore, the specific structure of the anchor bolt fixing bracket in step S2 is: comprising a support plate and support rods arranged at four corners of the support plate, the support rods are fixedly connected to the support plate, and the support plate is provided with an opening penetrating the support plate.

[0015] By adopting the above technical scheme, the construction workers pour concrete into the steel column according to the construction workers. The concrete is measured and positioned and recorded. The anchor fixing bracket is installed and placed so that the four support rods correspond to the marks on the red paint and the support plate is centered. The four support rods are then welded to the steel bars at the bottom of the pedestal or the steel bars at the head of the pedestal pile. The steel column is then hoisted on the upper surface of the support plate so that the opening of the steel column is aligned with the opening of the support plate. Concrete is then poured into the steel column so that the concrete is poured to the bottom of the pedestal through the steel column. After the concrete covers the bottom of the pedestal to form a pedestal, the pouring is stopped. After the concrete solidifies, the steel column is continued to be poured so that the steel column and the anchor fixing bracket form an integrated steel-concrete column pedestal.

[0016] Furthermore, the support plate is provided with a plurality of positioning holes in a circular array with the center of the support plate as the base point, and the plurality of positioning holes are all threadedly connected with an adjusting threaded rod, and a positioning platform opposite to the positioning holes is provided around the bottom end of the steel column, and connecting holes corresponding to the positioning holes are provided on the positioning platform, and the connecting holes pass through the positioning platform.

[0017] By adopting the above technical scheme, although the anchor bolt fixing bracket can center the support plate through the setting of the support rod, the steel column installed on the support plate may not be accurately centered even with the assistance of the construction workers. The setting of the positioning hole, the adjusting threaded rod and the positioning platform solves this technical problem. When the anchor bolt fixing bracket is installed, the steel column is hung on the upper surface of the support plate, and the adjusting threaded rod is extended toward the positioning platform by rotating the adjusting threaded rod. Then the construction workers observe whether the adjusting threaded rod can be threadedly connected to the connecting hole. If it can be threadedly connected to the connecting hole, the adjusting threaded rod is continued to be rotated to make the adjusting threaded rod pass through the positioning platform. Because the positioning holes are set in a circular array with the center of the support plate as the base point, the steel column can be in a centered state after being restricted by the adjusting threaded rod. Only by continuing to lower the steel column to contact the support plate can the position of the steel column be prevented from deviating, thereby improving the accuracy of the installation.

[0018] Furthermore, an adjusting device for adjusting the verticality of the steel column installed on the anchor bolt fixing bracket is provided directly above the support plate.

[0019] Furthermore, the adjusting device includes an adjusting plate and a plurality of pairs of adjusting nuts threadedly connected to the adjusting threaded rod, the plurality of pairs of adjusting nuts are evenly distributed on the plurality of adjusting threaded rods, the adjusting plate is provided with adjustment holes corresponding to the positioning holes, the adjustment holes are larger than the diameter of the adjusting threaded rod, a pair of adjusting nuts are respectively located on the upper and lower sides of the adjusting plate to clamp the adjusting plate, and the adjusting plate is provided with openings corresponding to the openings of the support plate.

[0020] By adopting the above technical scheme, although the setting of the anchor bolt fixing bracket can make the steel column and the anchor bolt fixing bracket form an integrated steel concrete column cap, the construction ground is often uneven, which causes the anchor bolt fixing bracket installed on the ground to be in an inclined state as a whole, causing the steel column installed on the anchor bolt fixing bracket to be inclined. The setting of the adjustment device solves this technical problem. When the anchor bolt fixing bracket is installed, the levelness of the adjustment plate is detected by a spirit level. If the adjustment plate is not in a horizontal state, the adjusting nut is turned away from the adjusting plate so that the adjusting plate can move, and then the adjusting plate is shaken to adjust its levelness. After adjusting the adjusting plate to be horizontal, the adjusting nut is turned in the direction close to the adjusting plate so that the adjusting nut re-clamps the adjusting plate, and then the steel column is hung on the upper surface of the adjusting plate, and then the adjusting threaded rod is rotated to pass through the support plate, the adjusting plate and the positioning table, and then the steel column is lowered, so that the steel column is vertical, thereby improving the accuracy of the verticality of the steel column.

[0021] Furthermore, a plurality of support components for supporting the adjustment plate are provided between the adjustment plate and the support plate, and the plurality of support components are evenly distributed between the adjustment plate and the support plate.

[0022] Furthermore, the support assembly includes a storage rod and a support column. The storage rod is fixedly connected to the support plate with an opening facing upward. One end of the support column is fixedly connected to the adjustment plate, and the other end is inserted into the support column through the opening of the storage rod. A tooth groove is provided on one side of the storage rod, and a rack matching the tooth groove is fixedly provided on one side of the support column.

[0023] Furthermore, a gap is left between the side of the support column away from the rack and the inner side of the storage rod, and the support assembly also includes an auxiliary device located on the side of the storage rod away from the rack for preventing the rack from slipping.

[0024] Furthermore, the auxiliary device includes an auxiliary threaded rod threadedly connected to the side of the storage rod away from the rack, one end of the auxiliary threaded rod is located on the outside of the storage rod, and the other end extends into the storage rod to abut against the side wall of the support column.

[0025] By adopting the above technical solution, although the setting of the adjusting plate improves the accuracy of the verticality of the steel column, the adjusting plate is fixed to the adjusting threaded rod by an adjusting nut. This results in the adjusting plate being subjected to the pressure of the steel column, and it is very easy for the adjusting nut to slip, resulting in the steel column tilting before the concrete solidifies. Technical personnel in this field can easily think of setting a supporting rod between the adjusting plate and the supporting plate, but the adjusting plate is a rod that needs to be movably fixed, which will make the adjusting plate unable to be adjusted. If the supporting effect of the movable rod is not very good, the setting of the support assembly solves this technical problem. When the movable adjusting plate is needed, it only needs to be pulled normally. The adjusting plate is moved, and the rack rises along the tooth groove. After the adjustment is completed, the rack clamps the supporting column through the tooth groove to prevent it from sliding down. However, the rack needs a certain amount of space to slide up and down along the tooth groove. This space may cause the adjusting plate to slip when it is subjected to the pressure of the steel column. The setting of the auxiliary device solves this technical problem. After the adjustment of the adjusting plate is completed, the auxiliary threaded rod is screwed to make it abut against the side wall of the supporting column, so that the supporting column is clamped by the tooth groove and the auxiliary threaded rod. This can prevent the rack from slipping, and further enhance the supporting effect of the supporting column, so that the support column can support the adjusting plate without affecting the activity of the adjusting plate.

[0026] Furthermore, an adjustment handle is fixedly provided at the bottom end of the adjustment threaded rod.

[0027] By adopting the above technical solution, the adjustment handle makes it convenient for construction workers to rotate the adjustment threaded rod.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. Through the integrated casting construction method of steel-concrete column and pedestal, the purpose of integrated construction of embedded column foot and pedestal is achieved through anchor bolt fixing bracket. After the anchor bolt fixing bracket and steel column are cast together with the pedestal, they can directly enter the next process, shortening the construction period and improving the quality. The integrated construction of steel column and pedestal ensures the one-time forming of the bottom of the steel-concrete column, better improves the stiffness and overall stability of the node, avoids the unstable structure caused by cutting the bottom plate and column reinforcement due to the deviation of column reinforcement in the later stage, and abandons the traditional practice of casting the pedestal twice, which improves the construction quality and speeds up the construction period.

[0030] 2. Through the setting of the positioning holes, adjusting threaded rods and positioning platforms, it is achieved that after the installation of the anchor bolt fixing bracket is completed, the steel column is hung on the upper surface of the support plate, and the adjusting threaded rod is extended toward the positioning platform by rotating the adjusting threaded rod. Then the construction personnel observe whether the adjusting threaded rod can be threadedly connected to the connecting hole. If it can be threadedly connected to the connecting hole, the adjusting threaded rod is continued to be rotated to make the adjusting threaded rod pass through the positioning platform. Because the positioning holes are set in a circular array with the center of the support plate as the base point, the steel column can be restricted by the adjusting threaded rod and be in a centered state. Only by continuing to lower the steel column to contact the support plate can the position of the steel column be prevented from deviating, thereby improving the accuracy of the installation.

[0031] 3. Through the setting of the adjusting device, after the installation of the anchor bolt fixing bracket is completed, the horizontality of the adjusting plate is detected by the spirit level. If the adjusting plate is not in a horizontal state, the adjusting nut is turned away from the adjusting plate to make the adjusting plate movable, and then the adjusting plate is shaken to adjust its horizontality. After the adjusting plate is adjusted to be horizontal, the adjusting nut is turned toward the adjusting plate to make the adjusting nut clamp the adjusting plate again, and then the steel column is hung on the upper surface of the adjusting plate, and then the adjusting threaded rod is rotated to pass through the support plate, the adjusting plate and the positioning table, and then the steel column is lowered, so that the steel column is vertical, thereby improving the accuracy of the verticality of the steel column.

[0032] 4. Through the setting of the support component, when the adjustment plate needs to be moved, it is only necessary to pull the adjustment plate normally. At this time, the rack rises along the tooth groove. After the adjustment is completed, the rack clamps the support column through the tooth groove to prevent it from sliding down, so that the support column can support the adjustment plate without affecting the activity of the adjustment plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a specific flow chart of the construction method of the embodiment;

[0034] Figure 2 It is a schematic diagram of the overall structure of the embodiment;

[0035] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0036] Figure numerals: 1. Steel column; 10. Positioning platform; 11. Connecting hole; 2. Anchor bolt fixing bracket; 20. Support plate; 21. Support rod; 22. Adjusting threaded rod; 23. Adjusting handle; 3. Adjusting device; 30. Adjusting plate; 31. Adjusting nut; 32. Adjusting hole; 4. Support assembly; 40. Storage rod; 41. Support column; 42. Rack; 5. Auxiliary threaded rod. DETAILED DESCRIPTION

[0037] The present application is further described in detail below in conjunction with the accompanying drawings.

[0038] Example, see Figure 1 , Figure 2 A method for integrally pouring a steel-concrete column and a cap comprises the following steps:

[0039] S1. Use the total station to lay out the axis, lay out the steel column 1, mark the column area, spray it with red paint, and measure the plane position and elevation according to the design drawing elevation to ensure the accuracy of the elevation and plane, and ensure that it is within the allowable error range of the specification;

[0040] S2. Tie the steel bars at the bottom of the cap according to the design drawings;

[0041] S3, an anchor bolt fixing bracket 2 for installing the steel column 1 is provided, and the specific structure of the anchor bolt fixing bracket 2 is: comprising a support plate 20 and support rods 21 arranged at four corners of the support plate 20, the support rods 21 are fixedly connected to the support plate 20, and an opening penetrating the support plate 20 is opened on the support plate 20, and the anchor bolt fixing bracket 2 is installed and placed according to the measurement and positioning record;

[0042] S4, using auxiliary steel bars to spot weld the anchor bolt fixing bracket 2 to the steel bars at the bottom of the cap or the steel bars at the pile head of the cap to prevent the bracket from moving and deviating;

[0043] S5. Use a tower crane to hoist the steel column 1 to the top of the anchor bolt fixing bracket 2. During the hoisting process, multiple personnel assist in positioning and installation. Two personnel make fine adjustments to the position of the steel column 1 during the hoisting process and adjust it to the upper surface of the anchor bolt fixing bracket 2; one person directs the tower crane to make slow adjustments. After hoisting it to the anchor bolt fixing bracket 2, a total station is used to check the horizontal position and elevation;

[0044] S6. After the steel column is corrected and verified, the reinforcement workers will tie up the vertical reinforcement and stirrups on the outside of the steel column 1, and strictly control the range of the column stirrups to ensure the effect of the column concrete after molding, and then pour from the top surface opening of the steel column 1.

[0045] The purpose of integrated construction of the embedded column foot and the cap is achieved by the anchor bolt fixing bracket 2. After the anchor bolt fixing bracket 2 and the steel column 1 are cast together with the cap, the next process can be directly entered, which shortens the construction period and improves the quality. The steel column 1 is constructed in an integrated manner with the cap to ensure the one-time forming of the bottom of the steel concrete column, better improve the stiffness and overall stability of the node, and avoid the unstable structure caused by cutting the bottom plate and column reinforcement of the steel column 1 due to the deviation of the column reinforcement in the later period. At the same time, the traditional practice of pouring the cap twice is abandoned, which improves the construction quality and speeds up the construction period. The construction personnel pour concrete into the steel column 1, and the concrete is measured and located and recorded, and then the anchor bolts are installed and fixed. Fix the bracket 2 so that the four support rods 21 correspond to the marks painted in red, so that the support plate 20 is centered, and then weld the four support rods 21 to the steel bars at the bottom of the pedestal or the steel bars at the head of the pedestal pile, and then hang the steel column 1 on the upper surface of the support plate 20 so that the opening of the steel column 1 is aligned with the opening of the support plate 20, and then pour concrete into the steel column 1 so that the concrete is poured to the bottom of the pedestal through the steel column 1, wait for the concrete to cover the bottom of the pedestal to form a pedestal, stop pouring, wait for the concrete to solidify, and continue pouring into the steel column 1 so that the steel column 1 and the anchor bolt fixing bracket 2 form an integrated steel-concrete column pedestal, which can make the position of the integrated steel-concrete column pedestal accurate and the probability of error is extremely small.

[0046] Although the anchor bolt fixing bracket 2 can center the support plate 20 through the setting of the support rod 21, the steel column 1 installed on the support plate 20 may not be accurately centered even with the assistance of construction personnel. In order to solve this technical problem, in this embodiment, a plurality of positioning holes in a circular array on the support plate 20 with the center of the support plate 20 as the base point are opened on the support plate 20, and the plurality of positioning holes are threadedly connected with an adjusting threaded rod 22. A positioning platform 10 corresponding to the positioning hole is provided around the bottom end of the steel column 1, and a connecting hole 11 corresponding to the positioning hole is opened on the positioning platform 10. The connecting hole 11 passes through the positioning platform 10. When the anchor bolt fixing bracket 2 is installed, the steel column 1 is hung on the upper surface of the support plate 20, and the adjusting thread is rotated to adjust the The rod 22 extends the adjusting threaded rod 22 toward the positioning platform 10, and then the construction personnel observe whether the adjusting threaded rod 22 can be threadedly connected to the upper connection hole 11. If it can be threadedly connected to the upper connection hole 11, the adjusting threaded rod 22 continues to be rotated to allow the adjusting threaded rod 22 to pass through the positioning platform 10. Because the positioning holes are arranged in a circular array with the center of the support plate 20 as the base point, the steel column 1 can be restricted by the adjusting threaded rod 22 and be in a centered state. Only by continuing to lower the steel column 1 to contact the support plate 20 can the position of the steel column 1 be prevented from deviating, thereby improving the accuracy of the installation. An adjusting handle 23 is fixed at the bottom end of the adjusting threaded rod 22, and the adjusting handle 23 facilitates the construction personnel to rotate the adjusting threaded rod 22.

[0047] Although the setting of the anchor bolt fixing bracket 2 can make the steel column 1 and the anchor bolt fixing bracket 2 form an integrated steel concrete column cap, the construction ground is often uneven, which causes the anchor bolt fixing bracket 2 installed on the ground to be in an inclined state as a whole, causing the steel column 1 installed on the anchor bolt fixing bracket 2 to be inclined. In order to solve this technical problem, referring to Figure 3 In this embodiment, an adjusting device 3 for adjusting the verticality of the steel column 1 installed on the anchor bolt fixing bracket 2 is provided directly above the support plate 20. The adjusting device 3 includes an adjusting plate 30 and a plurality of pairs of adjusting nuts 31 threadedly connected to the adjusting threaded rod 22. The plurality of pairs of adjusting nuts 31 are evenly distributed on a plurality of adjusting threaded rods 22. An adjusting hole 32 corresponding to the positioning hole is opened on the adjusting plate 30. The adjusting hole 32 is larger than the diameter of the adjusting threaded rod 22. A pair of adjusting nuts 31 are respectively located on the upper and lower surfaces of the adjusting plate 30 to clamp the adjusting plate 30. An opening corresponding to the opening of the support plate 20 is opened on the adjusting plate 30. When the anchor bolt fixing bracket 2 is installed, it is checked by a level meter. Measure the horizontality of the adjustment plate 30. If the adjustment plate 30 is not in a horizontal state, turn the adjusting nut 31 in the direction away from the adjustment plate 30 to allow the adjustment plate 30 to move, and then shake the adjustment plate 30 to adjust its horizontality. After adjusting the adjustment plate 30 to be horizontal, turn the adjusting nut 31 in the direction close to the adjustment plate 30 so that the adjusting nut 31 re-clamps the adjustment plate 30, and then hang the steel column 1 on the upper surface of the adjustment plate 30, and then rotate the adjusting threaded rod 22 to pass through the support plate 20, the adjustment plate 30 and the positioning table 10, and then lower the steel column 1, so that the steel column 1 is vertical, thereby improving the accuracy of the verticality of the steel column 1.

[0048] Although the setting of the adjustment plate 30 improves the verticality accuracy of the steel column 1, the adjustment plate 30 is fixed to the adjustment threaded rod 22 by the adjustment nut 31. This causes the adjustment nut 31 to slip easily when the adjustment plate 30 is subjected to the pressure of the steel column 1, causing the steel column 1 to tilt before the concrete solidifies. It is easy for those skilled in the art to set a supporting rod between the adjustment plate 30 and the support plate 20. However, the adjustment plate 30 is a rod that needs to be fixed and movable, which will make the adjustment plate 30 unable to be adjusted. If the rod is movable, the supporting effect is not very good. In order to solve this technical problem, in this embodiment, a plurality of support assemblies 4 for supporting the adjustment plate 30 are provided between the adjustment plate 30 and the support plate 20. The plurality of support assemblies 4 are evenly distributed between the adjustment plate 30 and the support plate 20. The support assembly 4 includes a storage rod 40 and a support column 41. The storage rod 40 is fixedly connected to the support plate 20 with an opening facing upward. One end of the support column 41 is fixedly connected to the adjustment plate 30, and the other end is inserted into the support column 41 through the opening of the storage rod 40. A tooth groove is provided on one side of the storage rod 40, and a rack 42 matching the tooth groove is fixedly provided on one side of the support column 41. The support column 41 is far away from the storage rod 40. There is a gap between the side away from the rack 42 and the inner side of the storage rod 40. The support assembly 4 also includes an auxiliary device located on the side of the storage rod 40 away from the rack 42 to prevent the rack 42 from slipping. The auxiliary device includes an auxiliary threaded rod 5 threadedly connected to the side of the storage rod 40 away from the rack 42. One end of the auxiliary threaded rod 5 is located on the outside of the storage rod 40, and the other end extends into the storage rod 40 to abut against the side wall of the support column 41. When the movable adjustment plate 30 is needed, the adjustment plate 30 only needs to be pulled normally. At this time, the rack 42 rises along the tooth groove. After the adjustment is completed, the rack 42 clamps the support column 41 through the tooth groove to prevent it from sliding down, but the tooth groove The rack 42 needs a certain amount of space to slide up and down along the tooth groove. This space may cause the adjustment plate 30 to slip when it is under the pressure of the steel column 1. The setting of the auxiliary device solves this technical problem. After the adjustment of the adjustment plate 30 is completed, the auxiliary threaded rod 5 is screwed to abut the side wall of the support column 41, so that the support column 41 is clamped by the tooth groove and the auxiliary threaded rod 5, so that the rack 42 can be prevented from slipping, and the supporting effect of the support column 41 is further improved, so that the support column 41 can support the adjustment plate 30 without affecting the activity of the adjustment plate 30.

[0049] Specific implementation process: First, measure the installation positions of the steel column 1 and the anchor bracket 2, mark them by spraying red paint, then tie the steel bars at the bottom of the pedestal at the bottom of the installation position, and then install the anchor bracket 2 at the marked position, weld the four support rods 21 to the steel bars at the bottom of the pedestal, and then use a level to measure whether the adjustment plate 30 is horizontal. If it is not horizontal, turn the adjustment nut 31 to shake the adjustment plate 30 to make it horizontal. After the adjustment is completed, the steel column 1 is hoisted to the top of the anchor bracket 2 by the tower crane. During the hoisting process, multiple personnel assist in positioning and installation. By turning the adjustment threaded rod 2 2 so that it passes through the support plate 20 and the adjustment plate 30 and approaches the positioning platform 10. When the tower crane lifts the steel column 1 to the connection hole 11 of the positioning platform 10 and aligns it with the adjusting threaded rod 22, the adjusting threaded rod 22 is rotated to make it threadedly connected to the positioning platform 10 and pass through the positioning platform 10, and then the steel column 1 is lowered, and the horizontal position and elevation are rechecked by the total station. After the recheck is completed, the steel bar operator binds the vertical steel bars and stirrups on the outside of the steel column 1, and strictly controls the range of the stirrups of the steel column 1 to ensure the effect of the concrete of the steel column 1 after molding, and then pours from the top opening of the steel column 1.

[0050] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method for integrated casting of steel-concrete columns and caps, characterized in that: The following steps are involved: S1. Use the total station to lay out the axis and steel column (1), mark the column area, spray red paint to mark it, measure the plane position and elevation according to the design drawing elevation, ensure the accuracy of the elevation and plane, and ensure that it is within the allowable error range of the specification; S2. Tie the steel bars at the bottom of the cap according to the design drawings; S3, providing an anchor bolt fixing bracket (2) for installing the steel column (1), and installing and placing the anchor bolt fixing bracket (2) according to the measurement and positioning record; S4. Use auxiliary steel bars to spot weld the anchor bolt fixing bracket (2) to the steel bars at the bottom of the cap or the steel bars at the pile head of the cap to prevent the bracket from moving or deviating; S5. The steel column (1) is hoisted to the top of the anchor bolt fixing bracket (2) by a tower crane. During the hoisting process, multiple personnel assist in positioning and installation. Two personnel make fine adjustments to the position of the steel column (1) during the hoisting process and adjust it to be placed on the upper surface of the anchor bolt fixing bracket (2); one person directs the tower crane to make slow adjustments. After hoisting to the anchor bolt fixing bracket (2), a total station is used to check the horizontal position and elevation. S6. After the steel column is corrected and verified, the reinforcement workers will tie the vertical reinforcement and stirrups on the outside of the steel column (1) and strictly control the range of the column stirrups to ensure the effect of the column concrete after molding. Then, pouring can be carried out from the top opening of the steel column (1).

2. The method for integrated casting of steel-concrete columns and caps according to claim 1 is characterized in that: The specific structure of the anchor bolt fixing bracket (2) in step S2 is as follows: it includes a support plate (20) and support rods (21) arranged at four corners of the support plate (20), the support rods (21) are fixedly connected to the support plate (20), and the support plate (20) is provided with an opening that passes through the support plate (20).

3. The method for integrated casting of steel-concrete columns and caps according to claim 2 is characterized in that: The support plate (20) is provided with a plurality of positioning holes arranged in a circular array with the center of the support plate (20) as a base point, and the plurality of positioning holes are all threadedly connected with an adjusting threaded rod (22). A positioning platform (10) opposite to the positioning hole is provided around the bottom end of the steel column (1), and a connecting hole (11) corresponding to the positioning hole is provided on the positioning platform (10), and the connecting hole (11) passes through the positioning platform (10).

4. The method for integrated casting of steel-concrete columns and caps according to claim 2 is characterized in that: An adjusting device (3) for adjusting the verticality of the profiled steel column (1) installed on the anchor bolt fixing bracket (2) is provided directly above the support plate (20).

5. The method for integrated casting of steel-concrete columns and caps according to claim 4 is characterized in that: The adjusting device (3) comprises an adjusting plate (30) and a plurality of pairs of adjusting nuts (31) threadedly connected to the adjusting threaded rods (22); the plurality of pairs of adjusting nuts (31) are evenly distributed on the plurality of adjusting threaded rods (22); an adjusting hole (32) corresponding to the positioning hole is opened on the adjusting plate (30); the adjusting hole (32) is larger than the diameter of the adjusting threaded rod (22); a pair of adjusting nuts (31) are respectively located on the upper and lower surfaces of the adjusting plate (30) to clamp the adjusting plate (30); and an opening corresponding to the opening of the supporting plate (20) is opened on the adjusting plate (30).

6. The method for integrated casting of steel-concrete columns and caps according to claim 5 is characterized in that: A plurality of support components (4) for supporting the adjustment plate (30) are provided between the adjustment plate (30) and the support plate (20); the plurality of support components (4) are evenly distributed between the adjustment plate (30) and the support plate (20).

7. The method for integrated casting of steel-concrete columns and caps according to claim 6 is characterized in that: The support assembly (4) comprises a storage rod (40) and a support column (41); the storage rod (40) is fixedly connected to the support plate (20) with its opening facing upward; one end of the support column (41) is fixedly connected to the adjustment plate (30) and the other end is inserted into the support column (41) through the opening of the storage rod (40); a tooth groove is provided on one side of the storage rod (40); and a rack (42) matching the tooth groove is fixedly provided on one side of the support column (41).

8. The method for integrated casting of steel-concrete columns and caps according to claim 7 is characterized in that: A gap is left between the side of the support column (41) away from the rack (42) and the inner side of the storage rod (40), and the support assembly (4) further comprises an auxiliary device located on the side of the storage rod (40) away from the rack (42) for preventing the rack (42) from slipping.

9. The method for integrated casting of steel-concrete columns and caps according to claim 8, characterized in that: The auxiliary device comprises an auxiliary threaded rod (5) threadedly connected to a side of the storage rod (40) away from the rack (42); one end of the auxiliary threaded rod (5) is located outside the storage rod (40), and the other end extends into the storage rod (40) to abut against the side wall of the support column (41).

10. The method for integrated casting of steel-concrete columns and caps according to claim 3 is characterized in that: An adjusting handle (23) is fixedly provided at the bottom end of the adjusting threaded rod (22).

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