CN108331258B - Assembled double-energy-consumption resettable circular steel tube concrete combined column and mounting method thereof - Google Patents

Abstract

The invention relates to an assembled double-energy-consumption resettable round steel tube concrete combined column and an installation method thereof, and belongs to the technical field of structural engineering. The invention aims to solve the problems that during larger earthquake action in the prior art, the steel tube concrete composite column is insufficient in integrity, the construction space of the composite column is small, double energy consumption is realized, and the recovery capability after earthquake is improved. The invention comprises a type I column, a type II column and an energy-consuming hinged steel plate. The I-type column circular stiffening steel pipe and the constraint support are spliced to form the I-type column circular stiffening steel pipe, the two ends of the circular stiffening steel pipe and the two ends of the constraint support are provided with corresponding constraint plates, eight bolt holes are reserved in the constraint plates, and the circular steel pipe and the constraint support are fixed through high-strength bolts. All components can be processed in a factory, and are connected on site through high-strength bolts, so that complete assembly construction is realized, quality problems possibly caused by on-site welding can be avoided, the construction progress is accelerated, the labor productivity is improved, and any damaged component can be accurately disassembled and quickly replaced after an earthquake occurs.

Description

Prefabricated double energy-consuming resettable circular steel tubular concrete composite column and its installation method

technical field

The invention relates to an assembled double-energy-consuming resettable circular steel tube concrete composite column and an installation method thereof, belonging to the technical field of structural engineering.

Background technique

With the development of technology, the height and span of building structures continue to increase. In tall and large-span buildings, the columns bear high axial force, and the design of building load-bearing columns is to ensure whether the building will be normal under a major earthquake. The key to the work, which requires the column not only to have sufficient strength but also to have good ductility. When a large load is encountered, the bearing capacity of a column is far from the force requirements, and when the cross-section of the column is large, the building space will be wasted, while the CFST composite column has high bearing capacity and good Due to the continuous restraint effect of steel pipes on concrete, the poor ductility characteristics of concrete, especially high-strength concrete, are significantly improved. However, when a large earthquake acts, the integrity and energy dissipation capacity of the composite column still undergo a great test, and the recovery capacity of the structure after the earthquake also needs to be improved.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide an assembled double-energy-dissipating and resettable circular concrete-filled steel tube composite column and an installation method, which are used to solve the problem of insufficient integrity of the concrete-filled steel tube composite column in the prior art when a large earthquake acts, and the construction space of the composite column is insufficient. Small, realize double energy consumption and improve the post-earthquake recovery ability.

The assembled double energy-consuming and resettable circular steel tube concrete composite column of the invention includes an independent foundation, a type I column, a type II column and an energy-consuming hinged steel plate, and a type I column and a type II column are fixedly installed on the independent foundation at the bottom. and energy-consuming hinged steel plates;

Type I columns are spliced together by circular stiffened steel pipes and restraint supports. Corresponding restraint plates are set at both ends of the circular stiffened steel pipes and at both ends of the restraint supports and eight bolt holes are reserved. The circular stiffened steel pipes and the restraint supports pass through. Fixed by high-strength bolts; the circular stiffened steel pipe is provided with stiffened hinge plates, and the stiffened hinge plates are provided with bolt holes;

Type II columns include upper round steel pipes, central plug steel pipes, lower round steel pipes, prestressed steel bars, spliced supports, upper sleeve connectors, and lower sleeve connectors; spliced supports and lower prestressed steel bars are fixed by fasteners ;The upper sleeve connector includes a round steel pipe, an end plate and a plug plate. The diameter of the round steel pipe is smaller than the diameter of the upper round steel pipe. An end plate is arranged in the middle of the round steel pipe. They are all connected vertically; the structure of the lower sleeve connector is symmetrical with that of the upper sleeve connector, and the insert plate is fixed above the end plate; the upper and lower ends of the centrally inserted steel pipe are provided with grooves that match the insert plate; The center plug steel pipe, the lower round steel pipe and the center plug steel pipe are plugged, and the gap between them is filled with rubber material to prevent the concrete from overflowing; the upper end of the upper round steel pipe and the lower end of the lower round steel pipe are fixed with steel fixing plates. A through hole is arranged in the center of the steel bar fixing plate, and steel bar holes are arranged around the through hole; the prestressed steel bars pass through the steel bar fixing plate at the upper end of the upper round steel pipe, the steel steel column column and the steel bar fixing plate at the lower end of the lower round steel pipe, and the lower end of the steel bar is connected with the splicing support. The seat is fixed by fasteners; the upper and lower round steel pipes are connected with the energy-consuming hinged steel plate with a hinged plate, and a hinged shaft slot is arranged on the plate;

There are bolt holes corresponding to the stiffening hinge plate on the connection side of the energy-dissipating hinged steel plate with the type I column, and the side connected with the type II column is provided with a hinge shaft, and the web part is provided with a rectangular hole; The column is connected with the type II column through the hinge shaft outside the plane, and then rotates into the plane of the type I column and the type II column with the hinge shaft as the rotation axis, and is connected with the stiffening hinge plate through the splicing plate and high-strength bolts;

The convex plate of the H-shaped steel beam is inserted between the plug-in plate of the upper sleeve connector and the plug-in plate of the lower sleeve connector. Both sides of the plug-in plate and the convex plate are overlapped by the web connecting plate. The flange and the end plate of the upper sleeve connecting piece, the lower flange of the H-shaped steel beam and the end plate of the lower sleeve connecting piece are respectively overlapped by flange connecting plates;

The fiber-reinforced concrete is poured into the circular stiffening steel pipe of the type I column and the circular steel pipe of the type II column, so that the connection parts are fastened and connected to form a whole through the occlusal effect.

Further, a stiffening hinge plate is provided outside the I-type column, and the stiffening hinge plate is provided with bolt holes.

Further, the type I column and the type II column are combined with energy-consuming hinged steel plates.

Further, the Class II cylindrical steel pipe is provided with a hinge plate outside, and the plate is provided with a hinge shaft slot.

Further, the energy-consuming hinged steel plates are connected to the I-type columns through bolts and splice plates.

Further, the energy-consuming hinged steel plate is connected to the type II column through the hinged shaft and the hinged plate.

Further, rectangular holes are provided at the webs of the energy-consuming hinged steel plates.

The installation method of the assembled double-energy-consuming and resettable square concrete-filled steel tube composite column according to the present invention comprises the following steps:

The first step: connect the circular stiffening steel pipe and the restraint support through high-strength bolts;

Step 2: Fix the splicing support and the lower steel bar with fasteners;

The third step: connect the upper round steel pipe with the upper sleeve connecting piece, and the lower steel pipe column with the lower sleeve connecting piece;

Step 4: The prestressed steel bars pass through the steel reinforcement fixing plate at the upper end of the upper round steel pipe, the steel steel pipe column and the steel fixing plate at the lower end of the lower steel pipe column in sequence;

Step 5: The energy-consuming hinged steel plate is connected with the type II column through the hinge shaft outside the plane of the type I column and the type II column, and then transferred to the plane of the type I column and the type II column with the hinge shaft as the rotation axis. Bolts are connected to stiffening hinge plates;

Step 6: Insert the convex plate of the H-shaped steel beam between the plug-in plate of the upper sleeve connector and the plug-in plate of the lower sleeve connector, and the two sides of the plug-in plate and the convex plate are overlapped by the web connecting plate. The upper flange of the steel beam and the end plate of the upper sleeve connecting piece, the lower flange of the H-shaped steel beam and the end plate of the lower sleeve connecting piece are respectively overlapped by flange connecting plates;

The seventh step: pour fiber concrete in the type I column circular stiffening steel pipe and the type II column circular steel pipe, so that the connection parts are fastened and connected to form a whole through the occlusal effect.

The present invention has the following beneficial effects:

(1) The energy-consuming hinged steel plate is connected to the type II column by means of hinges, which can be installed out of the plane of the type I column and the type II column and then transferred into the plane and then bolted to the type I column. This method greatly simplifies the construction process and is conducive to improving the efficiency of construction and installation.

(2) The present invention uses the energy-consuming hinged steel plate as the connecting member between the composite columns, and a plurality of rectangular holes are opened at the web of the steel plate to weaken the strength of the energy-consuming hinged steel plate, so that it will first produce tear damage under earthquake action. , consumes seismic energy, avoids the main load-bearing columns being directly subjected to earthquake action, realizes the initial energy consumption when the building structure is subjected to earthquake action, improves the seismic performance of the structure, and at the same time ensures the connection performance and integrity between the composite columns.

(3) The present invention uses the prefabricated CFST column as the type I column of the composite column, which fully guarantees the strength of the main load-bearing components of the composite column and ensures that the composite column can bear the vertical load; the diameter of the type I column is larger than that of the type II column. Class II columns are often easily damaged in actual use. It is only necessary to repair or replace the damaged Class II columns, which can be disassembled precisely and replaced quickly.

(4) The present invention adopts the prefabricated repositionable circular concrete-filled steel tubular column as the composite column Class II column, which can realize secondary energy consumption after the initial energy consumption of the energy-consuming hinged steel plate, and at the same time the prefabricated repositionable circular concrete-filled steel tubular column in the The prestressed steel bar is always in an elastic state under tension, and the column can be quickly reset after deformation during an earthquake, ensuring the integrity of the composite column and enabling the structure to continue to function.

(5) The present invention combines two types of concrete-filled steel tubular columns with different structures, and can bear a larger load by using a smaller cross-sectional space, realizes the combination of load bearing and space saving, and also avoids the waste of excessive beam-column joints. Fully save construction space and construction costs.

(6) All the components of the composite column of the present invention can be processed in the factory, and are all connected on site by high-strength bolts, realizing complete assembly construction, avoiding quality problems that may be caused by on-site welding, speeding up the construction progress and improving labor productivity. , After the earthquake, any damaged components can be accurately disassembled and replaced quickly.

Description of drawings

FIG. 1 is a perspective view of the present invention.

FIG. 2 is a front view of the present invention.

Figure 3 is a plan view of the present invention.

Figure 4 is a schematic diagram of a restraint support.

Figure 5 is a schematic diagram of a circular stiffened steel pipe for a class I column.

Fig. 6 is a schematic diagram of the assembly of the class I column.

Figure 7 is a schematic diagram of the upper and lower sleeve connecting parts.

Fig. 8 is a schematic diagram of a type II column node.

Figure 9 is a schematic diagram of the assembly of the class II column.

Figure 10 is a schematic diagram of an energy-consuming hinged steel plate.

Figure 11 is a schematic diagram of the assembly of an energy-consuming hinged steel plate and a type II column.

Figure 12 is a schematic diagram of the assembly of the energy-consuming hinged steel plate and the I-type column.

FIG. 13 is a schematic view of the structure of the side-column combined column of the present invention.

FIG. 14 is a horizontal projection view of the side-column combined column structure of the present invention.

FIG. 15 is a schematic view of the structure of the corner post combined post of the present invention.

FIG. 16 is a horizontal projection view of the corner-column combined column structure of the present invention.

The above drawings include the following reference signs: 1. Independent foundation; 2. Type I column; 3. Type II column; 4. Energy-consuming hinged steel plate; 5. Splicing support; 6. Constraining support; Section steel beam; 8. Circular stiffening steel pipe; 9. Stiffening hinge plate; 10. Constraining plate; 11. End plate; 12. Insert plate; 13. Round steel pipe; 14. Upper sleeve connecting piece; 15. Lower sleeve Connector; 16, groove; 17, hinge plate; 18, upper round steel pipe; 19, central plug steel pipe; 20, lower round steel pipe; 21, prestressed steel bar; 22, hinge shaft; 23, hinge shaft slot; 24. Flange connecting plate; 25. Web connecting plate; 26. Rectangular hole.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

Example 1:

As shown in Figures 1, 2 and 3, an assembled double-energy-dissipative and resettable circular concrete-filled steel tubular composite column of the present invention includes an independent foundation 1, a type I column 2 (fabricated restrained concrete-filled steel tubular column), and a type II column 3 (Assembled resettable circular concrete-filled steel tubular column) and energy-consuming hinged steel plate 4, the independent foundation 1 at the bottom is fixedly installed with I-type column 2, II-type column 3 and energy-consuming hinged steel plate 4. Class I column 2 is formed by splicing circular stiffening steel pipes 8 and restraining supports 6. Corresponding restraint plates 10 are set at both ends of circular stiffening steel pipes 8 and both ends of restraining supports 6 and eight bolt holes are reserved. 8 and the restraining support 6 are fixed by high-strength bolts; the circular stiffening steel pipe 8 is provided with a stiffening hinge plate 9, and the plate is provided with bolt holes. Combining two types of CFST columns with different structures can bear larger loads with a smaller cross-sectional space, realizing the combination of load bearing and space saving, avoiding the waste of excessive beam-column joints, and fully saving the building space. and construction costs.

As shown in Figures 4, 5 and 6, the I-type column 2 is formed by splicing a circular stiffening steel pipe 8 and a constraining support 6. Corresponding restraining plates 10 are provided at both ends of the circular stiffening steel pipe 8 and the two ends of the constraining support 6. Eight bolt holes are reserved, and the circular stiffening steel pipe 8 and the restraining support 6 are fixed by high-strength bolts; The use of prefabricated constrained concrete-filled steel tubular columns as the type I columns of the composite columns fully guarantees the strength of the main load-bearing components of the composite columns and ensures that the composite columns can bear vertical loads.

As shown in Figures 7, 8 and 9, the type II column 3 includes the upper round steel pipe 18, the central insert steel pipe 19, the lower round steel pipe 20, the prestressed steel bar 21, the splicing support 5, the upper sleeve connecting piece 14, the lower sleeve Cylinder connector 15; splicing support 5 and lower end prestressed steel bar 21 are fixed by fasteners; upper sleeve connector 14 includes round steel pipe 13, end plate 11 and insert plate 12, the diameter of the round steel pipe 13 is smaller than that of the upper round steel pipe 18 The diameter of the round steel pipe 13 is provided with an end plate 11 in the middle position, and the plug plate 12 is fixed under the end plate 11, and is vertically connected with the round steel pipe 13 and the end plate 11; the structure of the lower sleeve connector 15 is connected to the upper sleeve connector. 14 is symmetrical, and the inserting plate 12 is fixed above the end plate 11; the upper and lower ends of the central inserting steel pipe 19 are provided with grooves 16 that match the inserting plate 12; The plug-in steel pipes 19 are plugged, and the gap between them is filled with rubber material to prevent the concrete from overflowing; the upper end of the upper round steel pipe 18 and the lower end of the lower round steel pipe 20 are fixed with steel fixing plates, and the center of the steel fixing plates is provided with a through hole. The prestressed steel bar 21 passes through the steel bar fixing plate at the upper end of the upper round steel pipe 18, the round steel pipe 13 column and the steel bar fixing plate at the lower end of the lower round steel pipe 20 in turn, and the lower end of the steel bar passes through the splicing support 5. Fasteners are fixed; the upper round steel pipe 18 and the lower round steel pipe 20 are connected with the energy-consuming hinged steel plate 4 with a hinged plate 17, and a hinged shaft slot 23 is provided on the plate. The prefabricated resettable circular concrete-filled steel tubular column is used as the composite column type II column, which can realize secondary energy consumption after the initial energy consumption of the energy-consuming hinged steel plate. It is always in an elastic state, and the column can be quickly reset after deformation during an earthquake, ensuring the integrity of the composite column and enabling the structure to continue to function.

As shown in Figures 10, 11 and 12, the connection side of the energy-consuming hinged steel plate 4 with the type I column 2 is provided with bolt holes corresponding to the stiffening hinge plate 9, and the side connected with the type II column 3 is provided with a hinge shaft 22. A rectangular hole 26 is opened; the energy-consuming hinged steel plate 4 is connected with the type II column 3 through the hinge shaft 22 outside the plane of the type I column 2 and the type II column 3, and then the hinge shaft 22 is used as the rotation axis to turn into the type I column 2 and the type II column. 3 In the plane, it is connected with the stiffening hinge plate 9 through the splicing plate and high-strength bolts. The energy-consuming hinged steel plate is connected with the type II column by means of hinges, and can be installed outside the plane of the type I column and the type II column. Type I columns are bolted. This method greatly simplifies the construction process and is conducive to improving the efficiency of construction and installation.

The protruding plate of the H-shaped steel beam 7 is inserted between the inserting plate 12 of the upper sleeve connecting piece 14 and the inserting plate 12 of the lower sleeve connecting piece 15 , and both sides of the inserting plate 12 and the convex plate are overlapped by the web connecting plate 25 , the upper flange of the H-shaped steel beam 7 and the end plate 11 of the upper sleeve connecting member 14, the lower flange of the H-shaped steel beam 7 and the end plate 11 of the lower sleeve connecting member 15 are respectively overlapped by the flange connecting plate 24 catch;

Fibre concrete is poured in the circular stiffening steel pipe 8 of the type I column 2 and the circular steel pipe 13 of the type II column 3, so that the connection parts are fastened and connected to form a whole through the occlusal effect.

A stiffening hinge plate 9 is provided outside the round steel pipe 13 of the I-type column 2, and the stiffening hinge plate 9 is provided with bolt holes.

The type I column 2 and the type II column 3 are combined with an energy-consuming hinged steel plate 4 .

A hinge plate 17 is provided on the outside of the class II column 3 round steel pipe 13, and a hinge shaft slot 23 is provided on the plate.

The energy-consuming hinged steel plates 4 are connected to the I-type columns 2 through bolts and splice plates.

The energy-consuming hinged steel plate 4 is connected to the type II column 3 through the hinged shaft 22 and the hinged plate 17 .

A rectangular hole 26 is provided at the web of the energy-consuming hinged steel plate 4 . The energy-dissipating hinged steel plate is used as the connecting member between the combined columns and the columns, and a plurality of rectangular holes are opened at the web of the steel plate to weaken the strength of the energy-dissipating hinged steel plate, so that it will first produce tearing damage under earthquake action and consume seismic energy. It avoids the main load-bearing columns from being directly subjected to earthquake action, realizes the initial energy consumption when the building structure is subjected to earthquake action, improves the seismic performance of the structure, and at the same time ensures the connection performance and integrity of the composite columns.

Example 2:

In the above embodiment 1, one type I column 2 and four type II columns 3 are combined with energy-consuming hinged steel plates 4 . It should be noted in this embodiment 2 that the combination of the type I column 2 and the type II column 3 is various, and is not limited to the combination mentioned in this embodiment.

As shown in Figures 13 and 14, one of the type I columns 2 and three type II columns 3 are combined with energy-consuming hinged steel plates 4 to form a side column combined column structure.

As shown in Figures 15 and 16 , one of the type I columns 2 and two type II columns 3 are combined with energy-consuming hinged steel plates 4 to form a corner column combined column structure.

Example 3:

The installation method of the assembled double-energy-consuming and resettable circular steel tube concrete composite column according to the present invention comprises the following steps:

The first step: connect the circular stiffening steel pipe 8 and the restraint support 6 through high-strength bolts;

Step 2: Fix the splicing support 5 and the lower steel bar by fasteners;

The third step: connecting the upper round steel pipe 18 with the upper sleeve connecting piece 14, and connecting the lower round steel pipe 20 with the lower sleeve connecting piece 15;

The fourth step: the prestressed steel bars 21 pass through the steel reinforcement fixing plate at the upper end of the upper circular steel pipe 18, the circular steel pipe 13 column and the steel reinforcement fixing plate at the lower end of the lower circular steel pipe 20 in sequence;

The fifth step: the energy-consuming hinged steel plate 4 is connected with the type II column 3 through the hinge shaft 22 outside the plane of the type I column 2 and the type II column 3, and then the hinge shaft 22 is used as the rotation axis to turn into the type I column 2 and the type II column 3 In the plane, it is connected with the stiffening hinge plate 9 through the splicing plate and high-strength bolts;

Step 6: The convex plate of the H-shaped steel beam 7 is inserted between the plug plate 12 of the upper sleeve connector 14 and the plug plate 12 of the lower sleeve connector 15, and the two sides of the plug plate 12 and the convex plate are connected by webs The plates 25 are overlapped, the upper flange of the H-shaped steel beam 7 and the end plate 11 of the upper sleeve connecting piece 14 and the lower flange of the H-shaped steel beam 7 and the end plate 11 of the lower sleeve connecting piece 15 pass through the flanges respectively. The connecting plate 24 is overlapped;

Step 7: Pour fiber concrete in the circular stiffening steel pipe 8 of the type I column 2 and the circular steel pipe 13 of the type II column 3, so that the connection parts are fastened and connected to form a whole through the occlusal effect.

All the components of the composite column of the present invention can be processed in the factory, and are all connected on site by high-strength bolts, realizing complete assembly construction, avoiding quality problems that may be caused by on-site welding, speeding up the construction progress, and improving labor productivity. , any damaged components can be accurately disassembled and quickly replaced.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (8)

1. An assembled double-energy-consumption resettable round steel tube concrete combined column is characterized by comprising an independent foundation (1), a type I column (2), a type II column (3) and an energy-consumption hinged steel plate (4), wherein the type I column (2), the type II column (3) and the energy-consumption hinged steel plate (4) are fixedly installed on the independent foundation (1) at the bottom;

the I-type column (2) is formed by splicing a circular stiffening steel pipe (8) and a constraint support (6), two ends of the circular stiffening steel pipe (8) and two ends of the constraint support (6) are provided with corresponding constraint plates (10) and eight bolt holes are reserved, and the circular stiffening steel pipe (8) and the constraint support (6) are fixed through high-strength bolts; the circular stiffening steel pipe (8) is provided with a stiffening hinged plate (9), and the stiffening hinged plate (9) is provided with a bolt hole;

the II-type column (3) comprises an upper section of circular steel tube (18), a center inserting steel tube (19), a lower section of circular steel tube (20), prestressed reinforcements (21), a splicing support (5), an upper sleeve connecting piece (14) and a lower sleeve connecting piece (15); the splicing support (5) is fixed with the lower end prestressed reinforcement (21) through a fastener; the upper sleeve connecting piece (14) comprises a round steel pipe (13), an end plate (11) and an inserting plate (12), the diameter of the round steel pipe (13) is smaller than that of the upper section round steel pipe (18), the end plate (11) is arranged in the middle of the round steel pipe (13), and the inserting plate (12) is fixed below the end plate (11) and is vertically connected with the round steel pipe (13) and the end plate (11); the structure of the lower sleeve connecting piece (15) is symmetrical to that of the upper sleeve connecting piece (14), and the inserting plate (12) is fixed above the end plate (11); the upper end and the lower end of the central splicing steel pipe (19) are respectively provided with a groove (16) matched with the plug board (12); the upper section of the circular steel tube (18) is spliced with the central splicing steel tube (19), the lower section of the circular steel tube (20) is spliced with the central splicing steel tube (19), and rubber materials are filled in gaps among the upper section of the circular steel tube and the lower section of the circular steel tube to prevent concrete from overflowing; the upper end of the upper section of circular steel tube (18) and the lower end of the lower section of circular steel tube (20) are both fixed with a steel bar fixing plate, the center of the steel bar fixing plate is provided with a through hole, and steel bar holes are arranged around the through hole; the prestressed reinforcement (21) sequentially penetrates through a reinforcement fixing plate at the upper end of the upper section of the circular steel tube (18), the circular steel tube column and a reinforcement fixing plate at the lower end of the lower section of the circular steel tube (20), and the lower end of the reinforcement is fixed with the splicing support (5) through a fastener; a hinged plate (17) is arranged at the side where the upper section round steel pipe (18) and the lower section round steel pipe (20) are connected with the energy-consumption hinged steel plate (4), and a hinged shaft slot (23) is arranged on the hinged plate;

the connecting side of the energy-consuming hinged steel plate (4) and the class I column (2) is provided with a bolt hole corresponding to the stiffening hinged plate (9), the connecting side of the energy-consuming hinged steel plate and the class II column (3) is provided with a hinged shaft (22), and the web part is provided with a rectangular hole (26); the energy-consuming hinged steel plate (4) is connected with the II-type column (3) through a hinged shaft (22) outside the plane of the I-type column (2) and the II-type column (3), then is turned into the plane of the I-type column (2) and the II-type column (3) by taking the hinged shaft (22) as a rotating shaft, and is connected with the stiffening hinged plate (9) through a splice plate and a high-strength bolt;

the flange of the H-shaped steel beam (7) is inserted between the inserting plate (12) of the upper sleeve connecting piece (14) and the inserting plate (12) of the lower sleeve connecting piece (15), the two sides of the inserting plate (12) and the flange are overlapped through a web connecting plate (25), the upper flange of the H-shaped steel beam (7) is overlapped with the end plate (11) of the upper sleeve connecting piece (14), and the lower flange of the H-shaped steel beam (7) is overlapped with the end plate (11) of the lower sleeve connecting piece (15) through a flange connecting plate (24);

fiber concrete is poured into the circular stiffening steel pipe (8) of the type I column (2) and the circular steel pipe (13) of the type II column (3), so that the connecting parts are fastened and connected through occlusion to form a whole.

2. The assembled double-energy-consumption resettable round steel tube concrete composite column as claimed in claim 1, wherein a stiffening hinge plate (9) is arranged outside the circular stiffening steel tube (8) of the type I column (2), and bolt holes are arranged on the stiffening hinge plate (9).

3. The fabricated double-energy-consumption resettable round steel tube concrete combination column as claimed in claim 1 or 2, wherein the type I column (2) and the type II column (3) are combined by energy-consumption hinged steel plates (4).

4. The assembled double-energy-consumption resettable round steel tube concrete combined column as claimed in claim 3, wherein the round steel tube (13) of the class II column (3) is externally provided with a hinged plate (17) which is provided with a hinged shaft slot (23).

5. The fabricated double-energy-consumption resettable round steel tube concrete composite column as claimed in claim 1, wherein the energy-consuming hinged steel plate (4) is connected with the class i column (2) by bolts and splice plates.

6. The fabricated double-energy-consuming resettable round steel tube concrete composite column as claimed in claim 1 or 5, wherein the energy-consuming hinged steel plate (4) is connected with the class II column (3) through a hinged shaft (22) and a hinged plate (17).

7. The fabricated double-energy-consumption resettable round steel tube concrete composite column as claimed in claim 6, wherein the energy-consumption hinged steel plate (4) is provided with a rectangular hole (26) at a web.

8. A method for installing an assembled double-energy-consuming resettable round steel tube concrete composite column according to any one of claims 1 to 7, comprising the steps of:

the first step is as follows: connecting the round stiffening steel pipe (8) and the constraint support (6) through a high-strength bolt;

the second step is that: fixing the splicing support (5) and the lower end steel bar through a fastener;

the third step: connecting an upper section of circular steel tube (18) with an upper sleeve connecting piece (14), and connecting a lower section of circular steel tube (20) with a lower sleeve connecting piece (15);

the fourth step: the prestressed reinforcement (21) sequentially penetrates through a reinforcement fixing plate at the upper end of the upper section of the circular steel tube (18), the circular steel tube column and a reinforcement fixing plate at the lower end of the lower section of the circular steel tube (20);

the fifth step: the energy-consuming hinged steel plate (4) is connected with the II-type column (3) through a hinged shaft (22) outside the plane of the I-type column (2) and the II-type column (3), then is turned into the plane of the I-type column (2) and the II-type column (3) by taking the hinged shaft (22) as a rotating shaft, and is connected with the stiffening hinged plate (9) through a splice plate and a high-strength bolt;

and a sixth step: the flange of the H-shaped steel beam (7) is inserted between the inserting plate (12) of the upper sleeve connecting piece (14) and the inserting plate (12) of the lower sleeve connecting piece (15), the two sides of the inserting plate (12) and the flange are overlapped through a web connecting plate (25), the upper flange of the H-shaped steel beam (7) is overlapped with the end plate (11) of the upper sleeve connecting piece (14), and the lower flange of the H-shaped steel beam (7) is overlapped with the end plate (11) of the lower sleeve connecting piece (15) through a flange connecting plate (24);

the seventh step: fiber concrete is poured into the circular stiffening steel pipe (8) of the type I column (2) and the circular steel pipe (13) of the type II column (3), so that the connecting parts are fastened and connected through occlusion to form a whole.

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