A kind of assembled multi-limb square column with restorable function and its assembly method

Abstract

The present invention provides a restorable assembled multi-limb square column and an assembly method thereof, comprising a bearing steel structure, a damper and a plurality of limb columns arranged in a rectangular shape, wherein two adjacent limb columns are rigidly connected, the bearing steel structure is located between the plurality of limb columns, and a steel corbel of the bearing steel structure is located at the upper end of the corbel, and a bearing rubber transmits the load to the corbel through the steel corbel, and the bearing rubber has a certain elasticity, and the bearing rubber can be compressed and deformed near the corbel area, and the bearing rubber can cause a larger displacement trend of the core column, and the multi-limb square column can self-reset in a small or medium earthquake, and after a large earthquake, the structural function of the multi-limb square column can be quickly restored by replacing the damper and readjusting the positions of the various components.

Description

Technical Field

[0001] The invention relates to the field of structural technology, and in particular to an assembled multi-limb square column with restorable functions and an assembly method thereof. Background Art

[0002] Structural columns are important components that support building structures. They bear the main vertical force in earthquakes. If they are damaged by a large earthquake at the epicenter, they will need repair and reinforcement at best, or the building will lose its safety capabilities at worst. Recoverable function is a new type of structural function. Structures with recoverable function can be simply repaired after a small earthquake and replaced in time after a large earthquake to quickly restore their structural functions.

[0003] The existing technical solution discloses a multi-limbed square column with a core column that can be restored. This technical solution can achieve the restorable function of the structural square column by installing the core column, fitting the side column to the core column, and then installing the steel beam and diagonal web, filling with plain concrete, and fixing the replaceable components. However, in this solution, there are many variable cross-section parts of the side column, and there are arc-shaped areas, and the concrete material is relatively brittle. Therefore, the construction of the side column in this technical solution is difficult, and during an earthquake, the core column and the side column are easily squeezed against each other, resulting in partial areas being crushed, thereby causing component damage. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a restorable assembled multi-limb square column and an assembly method thereof, which has the restorable function and is easy to construct, and no crushing damage will occur between components.

[0005] The present invention is achieved through the following technical solutions:

[0006] A functionally restorable assembled multi-limb square column, comprising a bearing steel structure, a bearing plate, a damper and a plurality of limbs arranged in a rectangular shape, wherein two adjacent limbs are rigidly connected, the bearing steel structure is located between the four limbs, and the bearing plate is located below the bearing steel structure and connected to the limbs;

[0007] The bearing steel structure includes a square steel tube, the outside of which is covered with bearing rubber, a plurality of horizontal steel corbels are evenly distributed on the side wall of the square steel tube, the plurality of steel corbels are buried in the bearing rubber, the bearing rubber is connected to the corbels of a plurality of limb columns, a core column is arranged in the square steel tube, the lower end of the core column passes through a bearing plate and is connected to the lower end of a damper, and the upper end of the damper is connected to the bottom of the bearing plate.

[0008] Preferably, the holding rubber is located at the top of the corbel, and the end of the steel corbel is located above the corbel.

[0009] Preferably, the plurality of steel corbels are arranged in a cross shape, and the axes of the coaxial steel corbels are parallel to the diagonals of the two diagonal limbs.

[0010] Preferably, two adjacent side walls of the limb column are provided with corbels at the same height, a steel corbel is provided above the two corbels, and the two steel corbels are arranged in parallel.

[0011] Preferably, at least one end of the square steel tube is provided with a variable-section steel tube, which is connected to the core column to prevent relative displacement between the core column and the square steel tube;

[0012] The variable-section steel pipe is a trumpet-shaped structure. The end with a smaller diameter of the variable-section steel pipe is connected to the end of the square steel pipe, and the other end extends axially. The angle between the hypotenuse on the upper and lower sides of the variable-section steel pipe and the vertical direction is smaller than the friction angle.

[0013] Preferably, the steel bracket is an I-beam, the lower flange of the I-beam is parallel to the horizontal plane, while the upper flange forms a certain angle with the horizontal plane, and the cross-sectional area of ​​the web of the I-beam from the end away from the square steel tube is smaller than the cross-sectional area close to the square steel tube.

[0014] Preferably, there are multiple force-bearing steel structures, the multiple force-bearing steel structures are spaced apart from top to bottom, and the core columns of the multiple force-bearing steel structures are integral structures.

[0015] Preferably, a through hole is provided at the center of the force-bearing plate, and the through hole is clearance-matched with the core column.

[0016] Preferably, the upper end of the core column is provided with a column head groove for connecting with the main beam or the secondary beam.

[0017] A method for assembling a functionally restorable assembled multi-limb square column comprises the following steps:

[0018] S1. Prepare limb columns and corbels;

[0019] S2. Steel brackets are arranged on the outer wall of the square steel tube, and shear-resistant parts are arranged on the inside of the square steel tube and the variable-section steel tube, and a holding rubber is formed on the steel brackets and the outer side of the square steel tube;

[0020] S3, arranging the predetermined positions of the three limb columns, installing the corbels to the predetermined positions of the limb columns, connecting the corbels of two adjacent limb columns through the corbel connecting beam, and installing a connecting steel beam between two adjacent columns;

[0021] S4. Install the bearing rubber and the bearing plate to the top of the corbel and the connecting steel beam respectively, and fix the bearing rubber and the corbel with a detachable weak connection;

[0022] S5. Install the last limb column to the predetermined position, complete the connection of all the corbels and connecting steel beams, and remove the weak connection at the same time;

[0023] S6. Support the formwork on the upper and lower sides of the square steel tube, cast the core column and the bearing column head respectively, and embed the embedded parts for connecting with the connecting plate during casting;

[0024] S7. Install a connecting plate at the lower end of the core column;

[0025] S8. Use mechanical equipment to apply a vertical upward supporting force to the connecting plate so that the upper top surface of the core column is lifted to a predetermined elevation;

[0026] S9. Cast the beam on the top surface of the core column. When casting the beam, a part of the steel bars, anchor steel bars and steel bar protective layer thickness should be reserved on the upper part of the beam without casting;

[0027] S10. Install a damper between the connecting plate and the holding plate;

[0028] S11, unloading the mechanical equipment in S8;

[0029] S12: Then pour the reserved steel bars, anchor bars and steel bar protective layer thickness on the upper part of the S9 middle beam.

[0030] Compared with the prior art, the present invention has the following beneficial technical effects:

[0031] The present invention provides a restorable assembled multi-limb square column, which includes a square column formed by multiple limb columns. A bearing steel structure is arranged in the square column. The bearing rubber of the bearing steel structure is connected to the corbels of the limb columns. At the same time, the steel corbels of the bearing steel structure are located at the upper ends of the corbels. The bearing rubber steel corbels transfer the load to the corbels. At the same time, the bearing rubber has a certain elasticity. The bearing rubber can be compressed and deformed near the corbel area. The bearing rubber can cause the core column to have a larger relative displacement trend.

[0032] Furthermore, the force bearing plate and the core column are matched with a gap, and the force bearing plate will not limit the displacement tendency of the core column. A plurality of dampers are connected to the lower part of the core column. As the core column tends to displace relative to the force bearing plate, the damper will produce a corresponding energy dissipation effect. This effect helps the multi-limb square column to dissipate a large amount of seismic energy, and it can self-reset during a small or medium earthquake. After a large earthquake, the structural function of the multi-limb square column can be quickly restored by simply replacing the damper and readjusting the positions of various components. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of a limb column and a corbel in a function-restorable assembled multi-limb square column of the present invention;

[0034] Figure 2It is a structural schematic diagram of a functionally restorable assembled multi-limb square column medium-bearing steel structure of the present invention;

[0035] Figure 3 It is a structural schematic diagram of another bearing steel structure in a function-restoring assembled multi-limb square column of the present invention;

[0036] Figure 4 for Figure 3 A front view of the bearing steel structure;

[0037] Figure 5 It is a schematic diagram of the position structure of the bearing steel structure and the corbel of the present invention;

[0038] Figure 6 It is a front view of the position of the bearing steel structure and the corbel of the present invention;

[0039] Figure 7 It is a top view of the position of the bearing steel structure and the corbel of the present invention;

[0040] Figure 8 It is a cross-sectional view of the combination of the force-bearing steel structure and the force-bearing rubber of the present invention;

[0041] Fig. 9 This is a structural schematic diagram of a functionally restorable assembled multi-limbed square column of the present invention;

[0042] Fig.10 It is a front view of a functionally restorable assembled multi-limb square column of the present invention;

[0043] Fig.11 It is a partial cutaway schematic diagram of a functionally restorable assembled multi-limbed square column of the present invention;

[0044] Fig.12 It is a partial cross-sectional view of the positions of connecting steel beams, bearing plates and connecting plates in a functionally restorable assembled multi-limb square column of the present invention;

[0045] Fig.13 It is a structural schematic diagram of the force-bearing plate of the present invention.

[0046] In the figure, 1 is a limb column, 2 is a corbel, 21 is a corbel connecting beam, 3 is a bearing steel structure, 31 is a square steel tube, 32 is a shear member, 33 is a steel corbel, 34 is a variable-section steel tube, 4 is a bearing rubber, 5 is a bearing column head, 51 is a first X-direction groove, 52 is a first Y-direction groove, 6 is a bearing plate, 7 is a connecting steel beam, 8 is a damper, 9 is a connecting plate, and 10 is a core column. DETAILED DESCRIPTION

[0047] The present invention will be further described in detail below in conjunction with the accompanying drawings, which are intended to explain the present invention rather than to limit it.

[0048] See also Figure 1-13 A functionally restorable assembled multi-limb square column comprises a bearing steel structure 3, a damper and a plurality of limb columns 1 arranged in a rectangular shape, wherein two adjacent limb columns 1 are rigidly connected, the bearing steel structure 3 is located between the plurality of limb columns 1, and the damper is located at the lower part of the bearing plate 6 and connected to the connecting plate 9 at the bottom of the core column 10.

[0049] The bearing steel structure 3 includes a square steel tube 31, the outside of the square steel tube 31 is coated with a bearing rubber 4, a plurality of horizontal steel corbels 33 are evenly distributed on the side walls of the square steel tube 31, and the plurality of steel corbels 33 are buried in the bearing rubber 4, corbels 2 are arranged on the opposite side walls of the two limbs 1, the limbs 1 and the corbels 2 are integrally cast, the bearing rubber 4 is weakly connected to the corbels 2, a core column 10 is arranged in the square steel tube 31, and the lower end of the core column 10 passes through the square steel tube 31 and the bearing plate 6 in sequence to be connected to the connecting plate 9.

[0050] The square steel tube 31 is a thin-walled square steel tube. Two steel brackets 33 are arranged on each side wall of the square steel tube 31. One end of the steel bracket 33 is fixed to the side wall of the square steel tube 31, and the other end is located above the weak connection between the holding rubber 4 and the bracket 2.

[0051] A shear member 32 is provided inside the square steel tube 31 , one end of the shear member 32 is connected to the square steel tube 31 , and the other end is cast together with the core column 10 . In this embodiment, the core column 10 is a cast-in-place concrete column, and the core column 10 is integrated with the bearing steel structure 3 through the shear member 32 .

[0052] In another embodiment, variable-section steel pipes 34 are symmetrically arranged at both upper and lower ends of the square steel pipe 31, and the variable-section steel pipe 34 is connected to the core column 10 to prevent the core column 10 and the bearing steel structure 3 from relative displacement. The variable-section steel pipe 34 is a trumpet-shaped structure, and the end with a smaller diameter of the variable-section steel pipe 34 is connected to the end of the square steel pipe 31, and the other end extends axially. The angle between the upper and lower hypotenuses of the variable-section steel pipe 34 and the column height direction of the limb column 1 is less than the friction angle. Since the core column 10 is cast by concrete, the shape of the core column 10 is the same as the shape of the variable-section steel pipe 34 and the square steel pipe 31 when it is inside the bearing steel structure 3, and the part of the core column 10 outside the bearing steel structure 3 is the same as the inner interface of the variable-section steel pipe 34, ensuring that the variable-section steel pipe 34 and the core column 10 cannot be displaced relative to each other, thereby increasing the force integrity between the core column 10 and the bearing steel structure 3.

[0053] In this embodiment, the upper and lower surfaces of the holding rubber 4 are flush with the top and bottom of the two variable-section steel tubes 34, respectively, and the core column 10 is anchored to the square steel tube 31 and the variable-section steel tube 34 through the shear member 32, so that the core column 10 and the holding rubber 4 have good force integrity and deform together under force.

[0054] The lower flange of the steel corbel 33 is parallel to the horizontal plane, while the upper flange forms a certain angle with the horizontal plane. In addition, the cross section of the web of the steel corbel 33 gradually increases as it approaches the square steel tube 31 from the side away from the square steel tube 31 .

[0055] See again Figure 5-10 The side walls of two adjacent limbs 1 are provided with corbels 2 at the same height, and two parallel steel corbels 33 are provided on each side wall of the square steel tube 31. The axial directions of the two steel corbels 33 are parallel to the diagonals of the two diagonal limbs 1. The holding rubber 4 is a rectangular structure, and a slot matching the limb 1 is provided at each vertex. The holding rubber 4 is supported on the corbels 2, and the free end of the steel corbel 33 is located above the supporting end. A corbel connecting beam 21 is provided between the two opposite corbels 2, and the two ends of the corbel connecting beam 21 are respectively connected to the corbels 2 of the two adjacent limbs 1. The corbel connecting beam 21 adopts I-beams, and the corbel connecting beam 21 and the corbel 2 are detachably connected by embedded parts.

[0056] There are multiple bearing steel structures 3, which are spaced apart from top to bottom, and the core columns 10 of the multiple bearing steel structures 3 are an integral structure. For example, in this embodiment, there are three bearing steel structures 3 from top to bottom, and the core column 10 connects the three bearing steel structures 3.

[0057] A connecting steel beam 7 is also connected between two adjacent limb columns 1. The connecting steel beam 7 and the limb column 1 are detachably connected by embedded parts. The holding plate 6 is located on the top surface of the connecting steel beam 7. The holding plate 6 is a concrete precast plate. The plane structure of the concrete precast plate is the same as the holding rubber 4. There is a right-angle groove on the holding plate 6 that cooperates with the limb column 1. The holding plate 6 and the connecting steel beam 7 are connected by embedded parts. A through hole is provided in the center of the holding plate 6, and a small gap is left between the core column 10 and the through hole to facilitate relative displacement between the core column 10 and the holding plate 6; when a variable-section steel pipe 34 is provided at the end of the square steel tube 31, the through hole of the holding plate 6 should be slightly larger than the cross-section surrounded by the maximum outer diameter of the variable-section steel pipe 34 to ensure that the core column 10 at the corresponding position of the square steel tube 31 can pass through the through hole of the holding plate 6.

[0058] A certain distance is set between the top of the force-bearing plate 6 and the nearest corbel 2 to ensure that there is no structural collision between the force-bearing plate 6 and the corbel 2, while facilitating the installation and construction of the force-bearing plate 6. A connecting plate 9 is provided at the lower end of the core column 10. The connecting plate 9 and the core column 10 are connected with embedded parts. Multiple dampers are detachably connected to the connecting plate 9, and the upper end of the damper is detachably connected to the lower end of the force-bearing plate 6.

[0059] A load-bearing column head 5 is provided at the upper end of the core column 10. A cross-shaped column head groove is provided on the top of the load-bearing column head 5 for connecting the main beam or the secondary beam. The column head groove includes a first X-direction groove 51 and a first Y-direction groove 52 arranged in a cross shape. The transverse and longitudinal directions of the cross-shaped groove are respectively parallel to the two center lines formed by the four limb columns 1, so as to facilitate the pouring of the beam inside the load-bearing column head 5 while ensuring that the multi-limb square column of the present application is subjected to uniform force.

[0060] The above-mentioned method for assembling a functionally restorable assembled multi-limb square column comprises the following steps:

[0061] S1: Prepare the limb column 1 and the corbel 2. At this time, they are not assembled after being prepared;

[0062] S2: Select whether to fix the variable-section steel tube 34 at the upper and lower ends of the square steel tube 31, set a steel corbel 33 on the outer wall of the square steel tube 31, and set a shear member 32 on the inside of the square steel tube and the variable-section steel tube. Form a mold at the end of the steel corbel 33, and form a holding rubber 4 on the steel corbel 33 and the outer side of the square steel tube 31 by means of die-casting, and embed a connector for connecting with the corbel 2 in the holding rubber 4;

[0063] S3: First install three limbs 1, then connect the corbel connecting beam 21 between two opposite corbels 2, and install the connecting steel beam 7 between the limbs 1 with opposite end faces;

[0064] S4: setting the force-holding rubber 4 and the force-holding plate 6 at a predetermined position of the limb column 1, and then fitting the limb column 1 to the force-holding rubber 4 and the force-holding plate 6, and fixing them first by using a detachable weak connection;

[0065] S5: Install the last limb column 1 to the predetermined position, complete the connection of all the corbel beams 21 and the connecting steel beams 7, and remove the weak connection at the same time;

[0066] S6: Support formwork on the upper and lower sides of the square steel tube 31, respectively cast the core column 10 and the bearing column head 5, and embed embedded parts for connecting with the connecting plate 9 during casting;

[0067] S7: Install the connecting plate 9 at the lower end of the stem 10;

[0068] S8: A mechanical device is used to apply a vertical upward supporting force to the lower part of the connecting plate 9, so that the upper top surface of the bearing column head 5 is lifted to a predetermined elevation;

[0069] S9: Cast the beam inside the first X-direction groove 51 and the first Y-direction groove 52. When casting the beam, a portion of the steel bars, anchor steel bars and steel bar protective layer thickness should be reserved at the upper part of the beam without casting;

[0070] S10: Install the replaceable damper 8;

[0071] S11: dismantle the mechanical equipment installed in S8;

[0072] S12: The reserved steel bars, anchor bars and steel bar protective layer thickness on the upper part of the post-cast S9 middle beam.

[0073] Regarding the design and selection of the damper 8, the damper 8 should have a large initial strength to ensure that the damper 8 has a small structural shape change at the moment of completing the assembly method S11, in order to ensure that the elevation change of the top of the bearing column head 5 is small. However, this will cause the elevation of the top of the cast beam in S9 to decrease. At this time, the beam is cast at the top of the steel bars reserved in S9, so that the top of the beam reaches the predetermined elevation.

[0074] Structural designers should note that the error between the change in elevation of the top of the bearing column 5 after completing S11 and the reserved uncast height of the upper part of the S9 middle beam should be small.

[0075] The force-bearing principle of a restorable assembled multi-limb square column provided by the present invention is described in detail below, as follows:

[0076] After each bearing steel structure 3 and the bearing rubber 4 are formed, the bearing rubber 4 is then weakly connected to the corbel 2. In this case, the bearing rubber 4 can rely on the steel corbel 33 inside the bearing rubber 4 to transfer the load to the corbel 2. At the same time, the bearing rubber 4 also has a certain elasticity. The bearing rubber 4 can be compressed and deformed near the corbel 2 area. Therefore, multiple bearing rubbers 4 are arranged on the multi-limbed square column to make the core column 10 have a greater displacement trend. In addition, after the bearing plate 6 is a reinforced concrete component connected to the connecting steel beam 7, there is no connection between the bearing plate 6 and the core column 10, and the bearing plate 6 will not limit the displacement trend of the core column 10. The lower part of the core column 10 is also connected to a connecting plate 9 through an embedded part. After a plurality of replaceable dampers 8 are detachably connected between the connecting plate 9 and the force-bearing plate 6, as the core column 10 tends to displace relative to the force-bearing plate 6, the damper 8 will produce a corresponding energy-consuming effect. This effect helps the multi-limb square column dissipate a large amount of seismic energy, and it can reset itself in a small or medium earthquake. After a large earthquake, it is only necessary to replace the damper 8 and readjust the positions of the various components to quickly restore the structural function of the multi-limb square column of this application. When replacing the damper 8, it is necessary to first use mechanical equipment to apply an upward supporting force to the connecting plate 9, and then replace the damper 8 when the structural safety is confirmed.

[0077] After the bearing steel structure 3 is combined with the bearing rubber 4, the bearing rubber 4 itself will produce a certain elastic compression deformation due to the self-weight of the bearing steel structure 3. In addition, after the core column 10 and the rear bearing column head 5 are cast, the self-weight of the core column 10 will make the elastic compression deformation of the bearing rubber 4 even greater. Therefore, after the core column 10 and the bearing column head 5 are cast, it is necessary to use mechanical equipment to apply a supporting force from the bottom of the connecting plate 9 upward to restore the deformation of the bearing rubber 4 and lift the upper top surface of the bearing column head 5 to a predetermined elevation, and finally connect the replaceable damper 8.

[0078] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A functionally restorable assembled multi-limbed square column, characterized in that: It comprises a bearing steel structure (3), a bearing plate (6), a damper and a plurality of limbs (1) arranged in a rectangular shape, wherein two adjacent limbs are rigidly connected, the bearing steel structure (3) is located between the four limbs (1), and the bearing plate (6) is located below the bearing steel structure (3) and connected to the limbs (1); The bearing steel structure (3) comprises a square steel tube (31), the outside of the square steel tube (31) is coated with a bearing rubber (4), a plurality of horizontal steel brackets (33) are evenly distributed on the side wall of the square steel tube (31), the plurality of steel brackets (33) are embedded in the bearing rubber (4), the bearing rubber (4) is connected to the brackets (2) of the plurality of limbs (1), a core column (10) is arranged in the square steel tube (31), the lower end of the core column (10) passes through the bearing plate (6) and is connected to the lower end of the damper, the upper end of the damper is connected to the bottom of the bearing plate (6), and the core column and the square steel tube are a cast-in-one structure; The holding rubber (4) is located at the top of the corbel (2), and the end of the steel corbel (33) is located above the corbel (2); The number of the bearing steel structures (3) is multiple, the multiple bearing steel structures (3) are arranged at intervals from top to bottom, and the core columns (10) of the multiple bearing steel structures (3) are in an integral structure.

2. The functionally restorable assembled multi-limbed square column according to claim 1, characterized in that: The plurality of steel brackets (33) are arranged in a cross shape, and the axes of the coaxial steel brackets (33) are parallel to the diagonals of the two diagonal limbs (1).

3. The functionally restorable assembled multi-limbed square column according to claim 2, characterized in that: Two adjacent side walls of the limb column (1) are both provided with corbels (2) at the same height, a steel corbel (33) is provided above each of the two corbels (2), and the two steel corbels (33) are arranged in parallel.

4. The functionally restorable assembled multi-limbed square column according to claim 1, characterized in that: At least one end of the square steel tube (31) is provided with a variable-section steel tube (34), and the variable-section steel tube (34) is connected to the core column (10) to prevent the core column (10) and the square steel tube (31) from relative displacement; The variable-section steel pipe (34) is a trumpet-shaped structure. The end with a smaller diameter of the variable-section steel pipe (34) is connected to the end of the square steel pipe (31), and the other end extends axially. The angle between the hypotenuse on the upper and lower sides of the variable-section steel pipe (34) and the vertical direction is smaller than the friction angle.

5. The functionally restorable assembled multi-limbed square column according to claim 1, characterized in that: The steel bracket (33) is an I-beam, the lower flange of the I-beam is parallel to the horizontal plane, while the upper flange forms a certain angle with the horizontal plane, and the cross-sectional area of ​​the web of the I-beam from the end away from the square steel tube is smaller than the cross-sectional area of ​​the end close to the square steel tube.

6. The functionally restorable assembled multi-limbed square column according to claim 1, characterized in that: A through hole is provided at the center of the force-bearing plate (6), and the through hole is clearance-matched with the core column (10).

7. The functionally restorable assembled multi-limbed square column according to claim 6, characterized in that: The upper end of the core column (10) is provided with a column head groove for connecting with a main beam or a secondary beam.

8. An assembly method of a restorable assembled multi-limbed square column according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1, preparing a limb column (1) and preparing a corbel (2); S2, a steel bracket (33) is arranged on the outer wall of the square steel tube (31), and a shearing member (32) is arranged inside the square steel tube and the variable-section steel tube, and a holding rubber (4) is formed on the steel bracket (33) and the outer side of the square steel tube (31); S3, arranging the three limb columns at predetermined positions, installing the corbels (2) at predetermined positions of the limb columns (1), connecting the corbels of two adjacent limb columns through the corbel connecting beam (21), and installing a connecting steel beam (7) between two adjacent columns; S4, the bearing rubber (4) and the bearing plate (6) are respectively installed on the top of the corbel (2) and the connecting steel beam (7), and the bearing rubber (4) and the corbel (2) are fixed by a detachable weak connection; S5, installing the last limb column (1) to the predetermined position, completing the connection of all the corbel beams (21) and the connecting steel beams (7), and removing the weak connection at the same time; S6, supporting formwork on the upper and lower sides of the square steel tube (31), respectively casting the core column (10) and the bearing column head (5), and embedding the embedded parts for connecting with the connecting plate (9) during casting; S7, installing a connecting plate (9) at the lower end of the core column (10); S8, using mechanical equipment to apply a vertical upward supporting force to the connecting plate (9), so that the upper top surface of the core column (10) is lifted to a predetermined elevation; S9. Cast a beam on the upper top surface of the core column (10). When casting the beam, a portion of the steel bars, anchor steel bars and steel bar protective layer thickness should be reserved at the upper part of the beam without casting; S10, installing a damper between the connecting plate (9) and the force-bearing plate; S11, unloading the mechanical equipment in S8; S12: Then pour the reserved steel bars, anchor bars and steel bar protective layer thickness on the upper part of the S9 middle beam.

Images