Installation and construction method for large-scale steel column with bracket

Abstract

The invention relates to the field of building construction, and particularly discloses an installation construction method of a large-scale section steel column with a corbel, which comprises the following steps: after a section steel column main body and the corbel are horizontally hoisted to a floor plate in sequence by utilizing hoisting equipment, the section steel column main body and the corbel are assembled into the section steel column with the corbel on the floor plate; the first end of the section steel column with the bracket is connected with the top end of the lower-layer section steel column through a hinge, an angle fine adjustment mechanism is arranged, the second end of the section steel column with the bracket is connected with the floor plate through a first chain block, after the first chain block is tensioned, hoisting equipment lifts the second end, and the chain block is loosened synchronously to enable the section steel column with the bracket to rotate to a vertical state; and finally, the hinge and the angle fine adjustment mechanism are pre-connected and welded together, and structures such as the hinge and the angle fine adjustment mechanism are limited in detail. According to the method, the technical effects of safely and accurately completing installation of the large-scale section steel column with the corbel and ensuring accurate alignment of the corbel section steel column and the section steel column on the lower layer are achieved.

Description

Technical Field

[0001] The present application relates to the field of building construction, and in particular to a method for installing and constructing large steel columns with corbels. Background Art

[0002] Currently, in the construction industry, with the continuous expansion of building scale and the increasing complexity of building structures, large steel columns with corbels are widely used in high-rise and super-high-rise buildings, as well as large industrial buildings. Large steel columns with corbels can significantly enhance the load-bearing capacity and stability of building structures, providing strong guarantees for the safety and long-term use of buildings. This has driven the construction industry towards higher and more complex structures and is of great significance for improving the quality and efficiency of urban construction.

[0003] In the related art, steel columns with corbels are one of the commonly used structural forms for industrial plants and steel structure corridors. During installation, a tower crane is usually used to lift the steel columns vertically and move them to the installation position, and then the steel columns are connected to other building structures.

[0004] The above-mentioned related technologies have the following defects: the mass of the steel column with the corbel is large, and the tower crane is easily overloaded during the movement of the steel column with the corbel, and there are major safety hazards during the construction of the steel column with the corbel. Summary of the Invention

[0005] In order to enable the safe and efficient construction of corbel-type steel columns, the present application provides a method for installing and constructing large corbel-type steel columns.

[0006] The present application provides a method for installing and constructing a large steel column with a corbel, which adopts the following technical solution: A method for installing a large steel column with a bracket comprises the following steps: S1. After the main body of the steel column and the corbel are hoisted horizontally onto the floor panel using a hoisting device, the main body of the steel column and the corbel are assembled on the floor panel into a steel column with corbel; S2, connecting the first end of the corbel steel column to the top end of the lower steel column through a hinge; S3, setting an angle fine-adjustment mechanism between the first end of the corbel-shaped steel column and the top end of the lower steel column; S4, connecting the second end of the corbel-shaped steel column and the floor panel through a first fall chain; S5. After tightening the first fall chain, the hoisting equipment lifts the second end of the steel column with a corbel, and the fall chain is simultaneously relaxed until the steel column with a corbel rotates to a vertical state; S6. Further correcting the rotation angle of the corbel steel column by the angle fine-tuning mechanism to ensure accurate alignment between the corbel steel column and the lower steel column; S7, pre-connecting the first end of the corbel steel column to the top of the lower steel column by connecting bolts; S8. Weld the first end of the corbel-shaped steel column to the top end of the lower steel column.

[0007] By adopting the above technical solution, the steel column with corbels is broken down into parts. After the main body of the steel column and the corbels are hoisted horizontally onto the floor panel in sequence using a hoisting device, the main body of the steel column and the corbels are assembled on the floor panel to form a steel column with corbels. This reduces the weight of the structure that the hoisting device needs to lift at a single time, avoids overloading of the hoisting device, and facilitates the safe and rapid handling of the steel column with corbels. The steel column with corbels is connected to the lower steel column by a hinge to provide a support point for the rotation of the steel column with corbels. The hoisting device cooperates with the hinge to rotate the steel column with corbels upward, which effectively reduces the operating load of the hoisting device compared to directly hoisting the steel column with corbels with the hoisting device. After tightening the first fall chain, the hoisting device lifts the second end of the steel column with corbels, and the fall chain is simultaneously relaxed until the steel column with corbels is rotated to a vertical state. This can prevent the steel column with corbels from rotating excessively and tipping forward, thereby improving the safety of the steel column with corbels during rotation. After the hoisting equipment rotates the steel column with corbels to a vertical state, check whether the steel column with corbels and the lower steel column are accurately aligned. If the steel column with corbels and the lower steel column are accurately aligned, directly pre-connect the steel column with corbels and the lower steel column through connecting bolts. If there is an error in the alignment of the steel column with corbels and the lower steel column, then further fine-tune and correct the rotation angle of the steel column with corbels through the angle fine-tuning mechanism to ensure that the steel column with corbels and the lower steel column are accurately aligned, and then pre-connect the steel column with corbels and the lower steel column through connecting bolts. Finally, the steel column with corbels and the lower steel column are further fixed by welding to ensure that the connection between the steel column with corbels and the lower steel column is firm and stable. In summary, the present application reduces the operating load of the hoisting equipment, enables the steel column with corbels to be moved to the construction position quickly and accurately, and improves the safety of the construction of the steel column with corbels.

[0008] Preferably, the hinge includes a pin and two first connecting plates, the two first connecting plates are horizontally mounted on one end of the lower steel column facing the floor panel, and the first connecting plates are provided with first connecting holes; A second connecting plate connected to the corbel-shaped steel column is provided on each of the two first connecting plates on the opposite side thereof, and a second connecting hole is provided on the second connecting plate; The pin passes through the two first connecting holes and the two second connecting holes.

[0009] By adopting the above technical solution, the hinge connection composed of a pin shaft, two first connecting plates and two second connecting plates is used to connect the steel column with corbels and the lower steel column, so that the two can be flexibly rotated and connected, which facilitates the subsequent rotation of the steel column with corbels from a horizontal state to a vertical state, and can provide a stable connection foundation for angle fine-tuning and subsequent installation.

[0010] Preferably, the ends of the two second connecting plates facing away from each other are each provided with a vertically arranged dovetail slide rail, and the dovetail slide rail is provided with a long plate slider in sliding connection.

[0011] By adopting this technical solution, when the steel column with a corbel is rotated to a vertical position, the hoisting equipment needs to be released and the angle fine-tuning mechanism needs to be operated. Before releasing the hoisting equipment, the long plate slider slides downward to limit the rotation of the hinge and prevent the steel column with a corbel from tipping toward the floor panel.

[0012] Preferably, the dovetail slide rail is provided with spaced-apart limiting grooves and protective grooves in the length direction, the limiting grooves are arranged along the length direction of the dovetail slide rail, and the long board slider is provided with a limiting slider located in the limiting groove; the pin shaft is located on the inner side of the protective groove.

[0013] By adopting the above technical solution, the dovetail slide rail is provided with spaced limit grooves and protective grooves, and the long board slider is provided with a limit slider located in the limit groove, so that the long board slider can slide in a directional manner on the dovetail slide rail, thereby limiting the movement of the long board slider; the pin shaft is located on the inner side of the protective groove, which can protect the pin shaft and prevent it from being affected by external collisions and the like.

[0014] Preferably, the dovetail slide rails at the first end and the second end of the limiting slide groove can be detachably connected to the limiting sliding block.

[0015] By adopting the above technical solution, when it is necessary to limit the rotation of the hinge, the longboard slider slides downward until the limit slider moves downward to the first end of the limit slot. At this time, the limit slider connects with the dovetail rail at the first end of the limit slot, locking the position of the longboard slider, so that the longboard slider can stably limit the rotation of the hinge. When it is no longer necessary to limit the rotation of the hinge, the longboard slider slides upward until the limit slider moves upward to the second end of the limit slot. At this time, the limit slider connects with the dovetail rail at the second end of the limit slot, locking the position of the longboard slider, so that the longboard slider does not interfere with the rotation of the hinge.

[0016] Preferably, the second connecting plate is provided with an arc plate having the same axis as the pin shaft; The arc plate is sleeved with an arc tube, and the arc plate is slidably connected to the arc tube in the circumferential direction of the pin shaft.

[0017] By adopting the above technical solution, during the rotation of the steel column with corbel, the arc plate slides in the arc tube to guide the rotation of the steel column with corbel, so that the steel column with corbel is less likely to have position deviation after being rotated into place.

[0018] Preferably, connecting plates connected to the lower steel columns are provided on both sides of the pin in the length direction; The connecting plate is detachably connected to the corbel-shaped steel column.

[0019] By adopting the above technical solution, after the steel column with corbel is rotated into position, the position of the steel column with corbel is preliminarily fixed by pre-connecting the connecting plate with the steel column with corbel, so as to facilitate the subsequent further fixing of the steel column with corbel and the lower steel column by welding.

[0020] Preferably, the connecting plate is provided with a plurality of arc long holes coaxial with the pin shaft; the steel column with a corbel is provided with a plurality of limiting holes corresponding to the plurality of arc long holes one by one; The steel column with a corbel is provided with a plurality of connecting bolts corresponding to the plurality of arc long holes one by one; after the connecting bolts pass through the corresponding arc long holes and the corresponding limiting holes, they are threadedly connected with the connecting nuts.

[0021] By adopting the above technical solution, a reliable connection between the steel column with corbels and the lower steel column can be achieved. By utilizing multiple arc long holes coaxial with the pin axis in combination with the limit holes, connecting bolts and connecting nuts on the steel column with corbels, the steel column with corbels can adjust the angular position within a certain range around the pin axis, which is convenient for precise alignment during installation. After the alignment is completed, it is fixed by screwing, which enhances the stability and firmness of the structure. Combined with the steps of lifting the steel column with corbels to the floor panel, hinge connection, setting the angle fine-tuning mechanism, and fall chain connection, the installation of large steel columns with corbels can be successfully completed, ensuring precise alignment and a firm connection between the steel column with corbels and the lower steel column.

[0022] Preferably, the angle fine-adjustment mechanism includes a second fall chain and a reversing pulley, one end of the second fall chain is connected to the end of the corbel-shaped steel column away from the first fall chain, and the other end is connected to the floor panel; The reversing pulley is located on one side of the pin shaft in the length direction and is rotatably connected to the lower steel column; The middle portion of the second fall chain passes through the reversing pulley.

[0023] By adopting the above technical solution, the first fall chain pulls the steel column with the corbel toward the side of the floor panel, and the second fall chain pulls the steel column with the corbel toward the side away from the floor panel. After the steel column with the corbel is lifted and rotated to a vertical state by the lifting equipment, the angle of the steel column with the corbel is further fine-tuned by adjusting the opposite pulling forces of the first fall chain and the second fall chain, which can further correct the rotation angle of the steel column with the corbel, ensuring accurate alignment between the steel column with the corbel and the lower steel column.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. In this application, the steel column with corbels is broken down into parts, and the steel column body and the corbels are hoisted horizontally onto the floor panel in sequence using lifting equipment. The steel column body and the corbels are then assembled on the floor panel to form a steel column with corbels, thereby reducing the weight of the structure lifted by the lifting equipment in a single lift, avoiding overload operation of the lifting equipment, and facilitating the safe and rapid transportation of the steel column with corbels.

[0025] 2. In this application, the corbel column is connected to the lower steel column via a hinge, providing a support point for the corbel column's rotation. The hoisting equipment uses the hinge to rotate the corbel column upward, effectively reducing the operating load on the hoisting equipment compared to directly lifting the corbel column.

[0026] 3. In this application, after the first fall chain is tightened, the lifting equipment lifts the second end of the steel column with corbels, and the fall chain is simultaneously relaxed until the steel column with corbels is rotated to a vertical state. This can prevent the steel column with corbels from rotating excessively and tipping forward, thereby improving the safety of the steel column with corbels during rotation.

[0027] 4. In this application, after the lifting equipment rotates the steel column with corbels to a vertical state, check whether the steel column with corbels and the lower steel column are accurately aligned. If the steel column with corbels and the lower steel column are accurately aligned, directly pre-connect the steel column with corbels and the lower steel column through connecting bolts. If there is an error in the alignment of the steel column with corbels and the lower steel column, then further fine-tune and correct the rotation angle of the steel column with corbels through the angle fine-tuning mechanism to ensure that the steel column with corbels and the lower steel column are accurately aligned, and then pre-connect the steel column with corbels and the lower steel column through connecting bolts, thereby improving the installation accuracy of the steel column with corbels. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] Figure 1It is a flowchart of an embodiment of the present application; Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 3 It is a schematic diagram of the decomposition structure of an embodiment of the present application.

[0030] Reference numerals: 1. Floor panel; 2. Steel column with corbel; 21. Steel column body; 2101. Limiting hole; 22. Corbel; 23. Connecting bolt; 24. Connecting nut; 3. Lower steel column; 31. Connecting plate; 3101. Arc long hole; 4. Hinge; 41. First connecting plate; 4101. First connecting hole; 42. Second connecting plate; 4201. Second connecting hole; 43. Pin; 44. Dovetail rail ; 4401. Limiting slide; 4402. Protective groove; 45. Long board slider; 451. Limiting slider; 46. Arc plate; 461. Arc tube; 5. Lifting equipment; 51. First lifting eye; 52. Second lifting eye; 6. First fall chain; 61. Third lifting eye; 62. Fourth lifting eye; 7. Angle fine-tuning mechanism; 71. Second fall chain; 72. Reversing pulley; 73. Fifth lifting eye; 74. Sixth lifting eye. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-3 This application is described in further detail.

[0032] The embodiment of the present application discloses a method for installing and constructing a large steel column with a corbel.

[0033] Reference Figure 1 、 Figure 2 and Figure 3 A method for installing a large steel column with a corbel includes the following steps: S1. After the steel column body 21 and the corbel 22 are hoisted horizontally onto the floor panel 1 in sequence using the hoisting equipment 5, the steel column body 21 and the corbel 22 are assembled on the floor panel 1 to form the steel column 2 with corbels. Specifically, the hoisting equipment 5 is a tower crane. To facilitate hoisting of the steel column body 21 and the corbel 22, a first lifting lug 51 and a second lifting lug 52 are provided on the steel column body 21 and the corbel 22, respectively. The lifting hook on the tower crane's hoisting rope hooks the steel column body 21 and the corbel 22 through the first lifting lug 51 and the second lifting lug 52, respectively. Furthermore, to reduce damage to the steel column body 21 and the corbel 22 during movement, wooden blocks are placed on the floor panel 1 in advance, and the steel column body 21 and the corbel 22 are placed horizontally on the blocks.

[0034] S2. Connect the first end of the corbel steel column 2 to the top of the lower steel column 3 through the hinge 4.

[0035] S3. An angle fine-tuning mechanism 7 is provided between the first end of the corbel-shaped steel column 2 and the top end of the lower steel column 3.

[0036] S4. Connect the second end of the corbel steel column 2 to the floor panel 1 via a first fall chain 6. Specifically, a detachably connected third lifting lug 61 and fourth lifting lug 62 are provided at each end of the first fall chain 6. The third lifting lug 61 is connected to the floor panel 1. When installing the third lifting lug 61, an embedded steel plate is placed on the floor panel 1 at a suitable distance from the lower steel column 3, and the third lifting lug 61 is welded to the embedded steel plate. The fourth lifting lug 62 is connected to the second end of the corbel steel column 2.

[0037] S5. After tightening the first fall chain 6, the hoisting device 5 lifts the second end of the corbel steel column 2, while the fall chain is simultaneously loosened until the corbel steel column 2 rotates to a vertical position. In other embodiments, the hoisting device 5 can first lift the second end of the corbel steel column 2. Just before the center of gravity of the corbel steel column 2 exceeds the center of the hinge 4's rotation axis, the fall chain is used to tighten the corbel steel column 2. The hoisting device 5 continues to lift the second end of the corbel steel column 2 upward while simultaneously loosening the fall chain until the corbel steel column 2 rotates to a vertical position.

[0038] S6. Further correct the rotation angle of the corbel steel column 2 through the angle fine-tuning mechanism 7 to ensure accurate alignment between the corbel steel column 2 and the lower steel column 3.

[0039] S7. Pre-connect the first end of the corbel-shaped steel column 2 and the top end of the lower steel column 3 using connecting bolts 23.

[0040] S8. Weld the first end of the corbel steel column 2 and the top end of the lower steel column 3 together.

[0041] Reference Figure 1 、 Figure 2 and Figure 3In the embodiment of the present application, the steel column 2 with corbels is broken down into parts, and after the steel column body 21 and the corbels 22 are hoisted horizontally onto the floor panel 1 in sequence by the hoisting equipment 5, the steel column body 21 and the corbels 22 are assembled on the floor panel 1 to form the steel column 2 with corbels, thereby reducing the structural weight of the single hoisting by the hoisting equipment 5, avoiding overload operation of the hoisting equipment 5, and facilitating the safe and rapid transportation of the steel column 2 with corbels. The steel column 2 with corbels is connected to the lower steel column 3 by a hinge 4 to provide a support point for the rotation of the steel column 2 with corbels. The hoisting equipment 5 cooperates with the hinge 4 to rotate the steel column 2 with corbels upward, which effectively reduces the operating load of the hoisting equipment 5 compared to directly hoisting the steel column 2 with corbels by the hoisting equipment 5. After tightening the first fall chain 6, the hoisting device 5 lifts the second end of the steel column with corbels 2, and the fall chain is simultaneously relaxed until the steel column with corbels 2 is rotated to a vertical state, which can prevent the corbels 22 from rotating excessively and falling forward, thereby improving the safety of the steel column with corbels 2 during rotation. After the hoisting device 5 rotates the steel column with corbels 2 to a vertical state, it checks whether the steel column with corbels 2 and the lower steel column 3 are accurately aligned. If the steel column with corbels 2 and the lower steel column 3 are accurately aligned, the steel column with corbels 2 and the lower steel column 3 are directly pre-connected by the connecting bolts 23. If there is an error in the alignment of the steel column with corbels 2 and the lower steel column 3, the angle fine-tuning mechanism 7 is used to further fine-tune and correct the rotation angle of the steel column with corbels 2. After ensuring that the steel column with corbels 2 and the lower steel column 3 are accurately aligned, the steel column with corbels 2 and the lower steel column 3 are pre-connected by the connecting bolts 23. Finally, the corbel steel column 2 is further fixed to the lower steel column 3 by welding to ensure that the corbel steel column 2 and the lower steel column 3 are firmly and stably connected. In summary, the present application reduces the operating load of the hoisting equipment 5, enables the corbel steel column 2 to be quickly and accurately moved to the construction position, and improves the safety of the construction of the corbel steel column 2.

[0042] Reference Figure 1 、 Figure 2 and Figure 3 The hinge 4 includes a pin 43 and two first connecting plates 41. The two first connecting plates 41 are mounted horizontally opposite each other on the end of the lower steel column 3 facing the floor panel 1. The first connecting plates 41 are provided with first connecting holes 4101. On opposite sides of the two first connecting plates 41, a second connecting plate 42 is provided, connected to the corbel steel column 2. The second connecting plates 42 are provided with second connecting holes 4201. The pin 43 passes through the two first connecting holes 4101 and the two second connecting holes 4201.

[0043] Reference Figure 1 、 Figure 2 and Figure 3In the embodiment of the present application, a hinge 4 consisting of a pin 43, two first connecting plates 41 and two second connecting plates 42 is used to connect the corbel-shaped steel column 2 and the lower steel column 3, which can achieve flexible rotation connection between the two, facilitate the subsequent rotation of the corbel-shaped steel column 2 from a horizontal state to a vertical state, and provide a stable connection foundation for angle fine-tuning and subsequent installation.

[0044] Reference Figure 1 、 Figure 2 and Figure 3 The two second connecting plates 42 are each provided with a vertical dovetail slide rail 44 at one end thereof which is away from each other, and a long plate slider 45 which is slidably connected to the dovetail slide rail 44 is provided.

[0045] Reference Figure 1 、 Figure 2 and Figure 3 In the embodiment of the present application, when the corbel-shaped steel column 2 is rotated to a vertical state, it is necessary to release the hoisting device 5 and operate the angle fine-tuning mechanism 7. Before releasing the hoisting device 5, the long plate slider 45 slides downward to limit the rotation of the hinge 4 and prevent the corbel-shaped steel column 2 from tipping toward the floor panel 1.

[0046] Reference Figure 1 、 Figure 2 and Figure 3 The dovetail slide rail 44 is provided with spaced apart limiting grooves 4401 and protective grooves 4402 in the length direction. The limiting grooves 4401 are arranged along the length direction of the dovetail slide rail 44. The long board slider 45 is provided with a limiting slider 451 located in the limiting groove 4401; the pin shaft 43 is located on the inner side of the protective groove 4402.

[0047] Reference Figure 1 、 Figure 2 and Figure 3 In the embodiment of the present application, the dovetail slide rail 44 is provided with a limiting slide groove 4401 and a protective groove 4402 that are spaced apart, and the long board slider 45 is provided with a limiting slider 451 located in the limiting slide groove 4401, so that the long board slider 45 can slide in a directional manner on the dovetail slide rail 44, thereby limiting the movement of the long board slider 45; the pin shaft 43 is located on the inner side of the protective groove 4402, which can protect the pin shaft 43 and prevent it from being affected by external collisions and the like.

[0048] Reference Figure 1 、 Figure 2 and Figure 3 The dovetail slide rails 44 at the first and second ends of the limiting slide groove 4401 can be detachably connected to the limiting slider 451.

[0049] Reference Figure 1 、 Figure 2 and Figure 3In the embodiment of the present application, when it is necessary to limit the rotation of the hinge 4, the long board slider 45 slides downward until the limiting slider 451 moves downward to the first end of the limiting slot 4401. At this time, the limiting slider 451 is connected to the dovetail rail 44 at the first end of the limiting slot 4401, locking the position of the long board slider 45, so that the long board slider 45 can stably limit the rotation of the hinge 4. When it is no longer necessary to limit the rotation of the hinge 4, the long board slider 45 slides upward until the limiting slider 451 moves upward to the second end of the limiting slot 4401. At this time, the limiting slider 451 is connected to the dovetail rail 44 at the first end of the limiting slot 4401, locking the position of the long board slider 45, so that the long board slider 45 does not interfere with the rotation of the hinge 4.

[0050] Reference Figure 1 、 Figure 2 and Figure 3 The second connecting plate 42 is provided with an arc plate 46 coaxial with the pin 43. An arc tube 461 is sleeved on the arc plate 46, and the arc plate 46 is slidably connected to the arc tube 461 in the circumferential direction of the pin 43.

[0051] Reference Figure 1 、 Figure 2 and Figure 3 In the embodiment of the present application, during the rotation of the corbel-shaped steel column 2, the arc plate 46 slides in the arc tube 461 to guide the rotation of the corbel-shaped steel column 2, so that the corbel-shaped steel column 2 is not prone to position deviation after it is rotated into place.

[0052] Reference Figure 1 、 Figure 2 and Figure 3 , both sides of the length direction of the pin shaft 43 are provided with a connecting plate 31 connected to the lower steel column 3. The connecting plate 31 is detachably connected to the steel column 2 with a corbel.

[0053] Reference Figure 1 、 Figure 2 and Figure 3 In the embodiment of the present application, after the corbel steel column 2 is rotated into position, the position of the corbel steel column 2 is preliminarily fixed by pre-connecting the connecting plate 31 with the corbel steel column 2, so as to facilitate the subsequent further fixing of the corbel steel column 2 and the lower steel column 3 by welding.

[0054] Reference Figure 1 、 Figure 2 and Figure 3The connecting plate 31 is provided with a plurality of arc-shaped elongated holes 3101 coaxial with the pin 43; the corbel-shaped steel column 2 is provided with a plurality of stopper holes 2101 corresponding one-to-one with the plurality of arc-shaped elongated holes 3101. The corbel-shaped steel column 2 is provided with a plurality of connecting bolts 23 corresponding one-to-one with the plurality of arc-shaped elongated holes 3101; the connecting bolts 23 pass through the corresponding arc-shaped elongated holes 3101 and the corresponding stopper holes 2101, and are then threadedly engaged with the connecting nuts 24.

[0055] Reference Figure 1 、 Figure 2 and Figure 3 In the embodiment of the present application, a reliable connection between the steel column with a corbel 2 and the lower steel column 3 can be achieved. By utilizing a plurality of arc long holes 3101 coaxial with the pin shaft 43 in combination with the limiting holes 2101 on the steel column with a corbel 2 and the connecting bolts 23 and the connecting nuts 24, the steel column with a corbel 2 can adjust the angular position within a certain range around the pin shaft 43, which is convenient for precise alignment during installation, and is fixed by screwing after the alignment is completed, thereby enhancing the stability and firmness of the structure. Combined with the steps of lifting the steel column with a corbel 2 to the floor panel 1, connecting with the hinge 4, setting the angle fine-tuning mechanism 7, and connecting with the fall chain, the installation of the large steel column with a corbel 2 can be successfully completed, ensuring that the steel column with a corbel 2 and the lower steel column 3 are accurately aligned and firmly connected.

[0056] Reference Figure 1 、 Figure 2 and Figure 3 The angle fine-tuning mechanism 7 includes a second fall chain 71 and a reversing pulley 72. One end of the second fall chain 71 is connected to the end of the steel column 2 with a corbel away from the first fall chain 6, and the other end is connected to the floor panel 1. The reversing pulley 72 is located on one side of the length direction of the pin shaft 43 and is rotatably connected to the lower steel column 3. The middle part of the second fall chain 71 passes through the reversing pulley 72. Specifically, the two ends of the second fall chain 71 are respectively provided with a fifth lifting lug 73 and a sixth lifting lug 74 that can be detachably connected. The fifth lifting lug 73 is installed on the floor panel 1 in the same manner as the third lifting lug 61. The sixth lifting lug 74 is connected to the end of the steel column 2 with a corbel away from the first fall chain 6.

[0057] Reference Figure 1 、 Figure 2 and Figure 3 In the embodiment of the present application, the first fall chain 6 pulls the steel column with corbel 2 toward the side of the floor panel 1, and the second fall chain 71 pulls the steel column with corbel 2 toward the side away from the floor panel 1. After the steel column with corbel 2 is lifted and rotated to a vertical state by the lifting equipment 5, the angle of the steel column with corbel 2 is further fine-tuned by adjusting the opposite pulling forces of the first fall chain 6 and the second fall chain 71, and the rotation angle of the steel column with corbel 2 can be further corrected to ensure accurate alignment between the steel column with corbel 2 and the lower steel column 3.

[0058] The implementation principle of the installation construction method of a large steel column with a corbel in the embodiment of the present application is as follows: After the steel column body 21 and corbel 22 are hoisted horizontally onto the floor panel 1 using a hoisting device 5, the steel column body 21 and corbel 22 are assembled on the floor panel 1 to form a steel column with corbel 2. The first end of the steel column with corbel 2 is connected to the top of the underlying steel column 3 via a hinge 4. An angle fine-tuning mechanism 7 is provided between the first end of the steel column with corbel 2 and the top of the underlying steel column 3.

[0059] The second end of the steel column with a corbel 2 is connected to the floor panel 1 by a first fall chain 6. After the first fall chain 6 is tightened, the hoisting device 5 lifts the second end of the steel column with a corbel 2, and the fall chain is simultaneously relaxed until the steel column with a corbel 2 is rotated to a vertical state.

[0060] By operating the angle fine-tuning mechanism 7, the first fall chain 6 pulls the corbel steel column 2 toward the side of the floor panel 1, and the second fall chain 71 pulls the corbel steel column 2 toward the side away from the floor panel 1. After the corbel steel column 2 is lifted and rotated to a vertical state by the hoisting equipment 5, the angle of the corbel steel column 2 is further fine-tuned by adjusting the opposite pulling forces of the first fall chain 6 and the second fall chain 71, which can further correct the rotation angle of the corbel steel column 2 to ensure accurate alignment between the corbel steel column 2 and the lower steel column 3.

[0061] The first end of the steel column with a corbel 2 is pre-connected to the top of the lower steel column 3 by a connecting bolt 23. The first end of the steel column with a corbel 2 is welded to the top of the lower steel column 3.

[0062] Unless otherwise defined, the technical or scientific terms used in this application shall have the usual meanings understood by persons of ordinary skill in the field to which this application belongs. The words "first", "second", "third" and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "one" or "a" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprises" cover the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0063] The above are all optional embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A method for installing a large steel column with a bracket, characterized by: The steps include: S1, using a hoisting device (5) to hoist the steel column body (21) and the corbel (22) horizontally onto the floor panel (1) in sequence, and then assembling the steel column body (21) and the corbel (22) on the floor panel (1) to form a steel column with corbel (2); S2, connecting the first end of the corbel-shaped steel column (2) to the top end of the lower steel column (3) via a hinge (4); S3, providing an angle fine-tuning mechanism (7) between the first end of the corbel-shaped steel column (2) and the top end of the lower steel column (3); S4, connecting the second end of the corbel-shaped steel column (2) and the floor panel (1) via a first fall chain (6); S5, after tightening the first fall chain (6), the hoisting device (5) lifts the second end of the steel column with a corbel (2), and the fall chain is simultaneously relaxed until the steel column with a corbel (2) rotates to a vertical state; S6, further correcting the rotation angle of the corbel-shaped steel column (2) through the angle fine-tuning mechanism (7), to ensure accurate alignment between the corbel-shaped steel column (2) and the lower steel column (3); S7, pre-connecting the first end of the corbel-shaped steel column (2) and the top end of the lower steel column (3) by means of connecting bolts (23); S8. Welding the first end of the corbel-shaped steel column (2) and the top end of the lower-layer steel column (3) together.

2. A method for installing and constructing a large steel column with a corbel according to claim 1, characterized in that: The hinge (4) comprises a pin (43) and two first connecting plates (41), the two first connecting plates (41) being mounted horizontally relative to each other at one end of the lower steel column (3) facing the floor panel (1), and the first connecting plates (41) being provided with a first connecting hole (4101); A second connecting plate (42) connected to the corbel-shaped steel column (2) is provided on opposite sides of the two first connecting plates (41), and a second connecting hole (4201) is provided on the second connecting plate (42); The pin shaft (43) passes through the two first connection holes (4101) and the two second connection holes (4201).

3. A method for installing and constructing a large steel column with a corbel according to claim 2, characterized in that: The two second connecting plates (42) are each provided with a vertically arranged dovetail slide rail (44) at one end facing away from the other, and a long plate slider (45) is provided on the dovetail slide rail (44) in sliding connection.

4. A method for installing and constructing a large steel column with a corbel according to claim 3, characterized in that: The dovetail slide rail (44) is provided with spaced apart limiting slide grooves (4401) and protective grooves (4402) along the length direction thereof, the limiting slide grooves (4401) being arranged along the length direction thereof, and the long plate slider (45) is provided with a limiting slider (451) located in the limiting slide grooves (4401); The pin shaft (43) is located inside the protective groove (4402).

5. A method for installing and constructing a large steel column with a corbel according to claim 4, characterized in that: The dovetail slide rail (44) at the first end and the second end of the limiting slide groove (4401) can be detachably connected to the limiting slider (451).

6. The method for installing a large steel column with a corbel according to claim 2, characterized in that: The second connecting plate (42) is provided with an arc plate (46) coaxial with the pin shaft (43); A circular arc tube (461) is sleeved on the circular arc plate (46), and the circular arc plate (46) is slidably connected to the circular arc tube (461) in the circumferential direction of the pin shaft (43).

7. The method for installing a large steel column with a corbel according to claim 2, characterized in that: Both sides of the pin shaft (43) in the longitudinal direction are provided with connecting plates (31) connected to the lower steel column (3); The connecting plate (31) is detachably connected to the corbel-shaped steel column (2).

8. The method for installing a large steel column with a corbel according to claim 7, characterized in that: The connecting plate (31) is provided with a plurality of arc long holes (3101) coaxial with the pin shaft (43); the steel column with a corbel (2) is provided with a plurality of limiting holes (2101) corresponding one-to-one to the plurality of arc long holes (3101); The corbel-shaped steel column (2) is provided with a plurality of connecting bolts (23) corresponding one-to-one to the plurality of the arc long holes (3101); the connecting bolts (23) pass through the corresponding arc long holes (3101) and the corresponding limiting holes (2101), and are then screwed with the connecting nuts (24).

9. The method for installing a large steel column with a corbel according to claim 2, characterized in that: The angle fine-adjusting mechanism (7) comprises a second fall chain (71) and a reversing pulley (72), one end of the second fall chain (71) is connected to the end of the steel column with a corbel (2) away from the first fall chain (6), and the other end is connected to the floor panel (1); The reversing pulley (72) is located on one side of the length direction of the pin shaft (43) and is rotatably connected to the lower steel column (3); The middle portion of the second fall chain (71) passes through the reversing pulley (72).

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