A double-tube multi-limb L-shaped special-shaped column with restorable function and its assembly method

Abstract

The present invention provides a double-cylinder multi-limb L-shaped special-shaped column with recoverable functions and an assembly method thereof. Three groups of inner cylinder frames are arranged in an L shape, and an outer cylinder frame is sleeved on the outside of the three groups of inner cylinder frames to form a double-cylinder multi-limb L-shaped special-shaped column, which can meet the support requirements at the corners of the wall and improve the stability and adaptability of the support at the corners in view of the complex situations in earthquakes. The outer cylinder frame of the present invention includes an L-shaped column that coincides with the horizontal projection of the three groups of inner cylinder frames arranged in an L shape, and is used to fit the corners of the wall, thereby improving the fit of the structure and facilitating installation. Finally, replaceable components can shear and dissipate energy when relative displacement occurs between the inner cylinder frame and the outer cylinder frame. After the replaceable components are damaged, they can be replaced, thereby extending the service life of the structure and solving the problem in the prior art that the L-shaped special-shaped columns cannot be replaced to restore the structural functions after an earthquake.

Description

Technical Field

[0001] The invention relates to the field of structural technology, in particular to a double-tube multi-limb L-shaped special-shaped column with restorable functions and an assembly method thereof. Background Art

[0002] Special-shaped columns can make the transition of building corners uniform, so that there is no protruding area at the building corners, which increases the aesthetic effect of the building while increasing the space utilization area. Therefore, this type of building form is becoming more and more popular. L-shaped special-shaped columns are a commonly used structural form. The two limbs of the L-shaped special-shaped column have a great influence on the vertical bearing capacity or lateral stiffness of the structure. Therefore, if the L-shaped special-shaped column is damaged in an earthquake, it will have a great negative impact on the safety of the building structure. In addition, the two limbs of the L-shaped special-shaped column are usually blocked by masonry walls. Once the L-shaped special-shaped column is damaged by an earthquake, it is extremely difficult to detect and reinforce it.

[0003] The restorable function is a new type of structural function. A structure with a restorable function can self-reset after a small earthquake and can be quickly replaced after a large earthquake. However, considering that the L-shaped column is an important load-bearing component, it is impossible to disassemble and replace the L-shaped column as a whole. The existing technology realizes the replaceable function of the L-shaped column through a lattice structure combined with the self-locking principle. However, the L-shaped column components formed by this technology need to adopt a large number of variable cross-section designs, which is difficult to construct. At the same time, the self-locking principle is applied between brittle components made of concrete materials. Then, this L-shaped column is prone to crushing damage under the action of an earthquake. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a double-tube multi-limb L-shaped special-shaped column with restorable functions and an assembly method thereof.

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

[0006] A double-tube multi-limb L-shaped special-shaped column with restorable functions, characterized in that it comprises three groups of inner tube frames and an outer tube frame sleeved outside the three groups of inner tube frames;

[0007] The three groups of inner cylinder frames are arranged in an L shape, each including four inner cylinder side columns; adjacent sides of the inner cylinder frames share the same inner cylinder side column; the upper parts of the three groups of inner cylinder frames are embedded with the same upper connector;

[0008] The outer tube frame comprises an L-shaped column and three outer tube side columns, and the L-shaped column and the three outer tube side columns are sequentially connected to form an L-shaped arrangement;

[0009] The L-shaped column is arranged in parallel with three groups of inner cylinder frames arranged in an L shape;

[0010] A replaceable component is connected between the L-shaped column and the adjacent inner tube side column, and the replaceable component is used for shear energy dissipation.

[0011] Furthermore, the four inner tube side columns are vertically arranged to form a square column structure;

[0012] The square column structure includes an upper support surface, a multi-level middle support surface and a lower support surface;

[0013] The upper support surface includes corbels arranged opposite to adjacent side walls of the inner tube side columns, and corbel connecting beams are connected between the corbels on adjacent inner tube side columns; the multi-level middle support surface and the lower support surface are arranged at intervals, and include inner tube connecting beams connected to adjacent side walls of adjacent inner tube side columns;

[0014] The upper support surface corbels extend in the reverse direction to the area where the inner tube side column side walls are extended with steel corbels, and the inner tube connecting beams of the multi-level middle support surface extend in the reverse direction to the area where the inner tube side column side walls are extended with steel corbels.

[0015] Furthermore, a main bearing beam is arranged horizontally and vertically between the L-shaped column and the three outer tube side columns;

[0016] The lower top surfaces of the ends of the steel brackets are all arranged on the upper side of the upper top surface of the force-bearing main beam, and the gap between the lower top surfaces of the force-bearing main beam is vertically provided with an outer tube connecting limb column;

[0017] The inner tube connecting beam extends in the reverse direction to the inner tube side column and the outer tube connecting limb column side wall, and a replaceable component is arranged between the inner tube side column and the outer tube connecting limb column, and the replaceable component is used for shear energy dissipation.

[0018] Furthermore, the main bearing beam comprises an I-beam, and shear members are arranged on both sides of the web of the I-beam;

[0019] Coordinated deformation rubber is arranged on the upper part of the I-beam and the outer side of the shear-resistant member.

[0020] Furthermore, a plurality of short-limb connecting beams are horizontally and vertically arranged between the outer tube connecting limb columns and between the outer tube connecting limb columns and the outer tube side columns.

[0021] Furthermore, the centroid distance between adjacent outer tube connecting limb columns is equal to the centroid distance between adjacent inner tube side columns.

[0022] Furthermore, an L-shaped groove is provided on the upper end surface of the upper connecting head for connecting the beam.

[0023] Furthermore, the replaceable component is a damper or an I-beam.

[0024] A method for preparing a double-tube multi-limb L-shaped special-shaped column with restorable functions comprises the following steps:

[0025] S1: Three groups of inner tube frames are arranged in an L shape according to the preset positions, and the adjacent sides of the inner tube frames share the same inner tube side column;

[0026] S2: The same upper connector is embedded at the upper ends of the inner tube side columns at the upper parts of the three sets of inner tube frames to form an inner tube structure;

[0027] S3: Cast or install the beam in the L-shaped groove in the upper connector;

[0028] S4: Build an outer cylinder frame outside the inner cylinder frame, connect replaceable components between the inner cylinder side columns adjacent to the L-shaped columns, and complete the assembly of the double-cylinder multi-limb L-shaped special-shaped columns.

[0029] Compared with the prior art, the present invention has the following beneficial technical effects:

[0030] The present invention provides a double-cylinder multi-limb L-shaped special-shaped column with recoverable functions. Three groups of inner cylinder frames are arranged in an L shape, and an outer cylinder frame is sleeved on the outside of the double-cylinder multi-limb L-shaped special-shaped column, which can meet the support requirements of the corners of the wall. In view of the complex situations in earthquakes, the stability and adaptability of the support at the corners are improved; the outer cylinder frame of the present invention includes an L-shaped column that coincides with the horizontal projection of the three groups of inner cylinder frames arranged in an L shape, which is used to fit the corners of the wall, improve the fit of the structure, and facilitate installation. Finally, the replaceable component can shear and consume energy when the inner cylinder frame and the outer cylinder frame undergo relative displacement. After the replaceable component is damaged, it can be replaced, thereby extending the service life of the structure, and solving the problem in the prior art that the structural column cannot be replaced to restore the structural function after an earthquake; at the same time, brick walls are usually built on the end faces of the two limbs of the L-shaped special-shaped column. If the structure is damaged in an earthquake, the brick walls at both ends of the L-shaped special-shaped column need to be removed to completely inspect and reinforce the structure. The L-shaped column of the present invention is composed of an inner tube frame and an outer tube frame. If the column needs to be repaired, it is only necessary to inspect or adjust the position of the components from the outer tube connecting column in the outer tube frame, and there is no need to remove the brick walls on the end faces of the two limbs of the L-shaped column. When using the L-shaped column of the present application, it is possible to choose whether to block the exposed areas of the two limbs of the L-shaped column in the thickness direction.

[0031] Furthermore, the load-bearing main beam includes coordinated deformation rubber, which is deformed when squeezed by the steel bracket, so that the inner tube frame and the outer tube frame can produce relative displacement in the height direction when transferring the load.

[0032] Furthermore, the centroid distance between adjacent outer tube connecting limb columns is equal to the centroid distance between adjacent inner tube side columns, so that the forces between the components of the structure are uniform, the stability of the structure is improved, and at the same time, it is convenient to install replaceable components and diagonal braces.

[0033] The present invention provides a method for preparing a double-tube multi-limb square column with restorable functions. Most of the components used in the method adopt existing structures and can be widely used in industrial production. At the same time, the method has simple steps and is highly feasible. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of a double-tube multi-limb L-shaped special-shaped column inner tube frame with recoverable functions according to the present invention;

[0035] Figure 2 It is a side view of a double-tube multi-limb L-shaped special-shaped column inner tube frame with restorable functions according to the present invention;

[0036] Figure 3 A top view of a double-tube multi-limb L-shaped special-shaped column inner tube frame with restorable functions according to the present invention;

[0037] Figure 4 It is a structural schematic diagram of a double-tube multi-limb L-shaped special-shaped column outer tube frame with restorable functions according to the present invention;

[0038] Figure 5 It is a side view of a double-tube multi-limb L-shaped special-shaped column outer tube frame with restorable functions according to the present invention;

[0039] Figure 6 A top view of a double-tube multi-limb L-shaped special-shaped column outer tube frame with restorable functions according to the present invention;

[0040] Figure 7 It is a structural schematic diagram of a double-tube multi-limb L-shaped special-shaped column with restorable functions according to the present invention;

[0041] Figure 8 A side view of a double-tube multi-limb L-shaped special-shaped column with restorable functions according to the present invention;

[0042] Fig. 9 A top view of a double-tube multi-limb L-shaped special-shaped column with restorable functions according to the present invention;

[0043] Fig.10 It is a schematic diagram of the connection structure of the inner cylinder side column and the L-shaped column in a double-cylinder multi-limb L-shaped special-shaped column with restorable function according to the present invention;

[0044] Fig.11 It is a schematic diagram of the connection structure of the inner tube side column and the outer tube connecting limb column in a double-tube multi-limb L-shaped special-shaped column with restorable functions according to the present invention;

[0045] Fig.12 It is a side view of the connection between the inner tube side column and the outer tube connecting limb column in a double-tube multi-limb L-shaped special-shaped column with restorable functions according to the present invention;

[0046] Fig.13It is a structural schematic diagram of the middle and upper connecting head of a double-tube multi-limb L-shaped special-shaped column with restorable functions according to the present invention;

[0047] Fig.14 The cross-sectional schematic diagram of a load-bearing connecting beam in a double-tube multi-limb L-shaped special-shaped column with recoverable function according to the present invention.

[0048] In the figure: inner tube frame 20, outer tube frame 30, inner tube side column 1, steel corbel 2, corbel 3, corbel connecting beam 31, inner tube connecting beam 4, outer tube side column 5, outer tube connecting limb column 51, load-bearing main beam 6, coordinated deformation rubber 61, I-beam 62, shear member 63, short limb connecting beam 7, upper connecting head 8, diagonal web member 9, replaceable component 10, L-shaped column 11. DETAILED DESCRIPTION

[0049] The present invention is further described in detail below in conjunction with specific embodiments, which are intended to explain the present invention rather than to limit it.

[0050] The present invention discloses a double-tube multi-limb L-shaped special-shaped column with restorable function, which is mainly used for supporting the corners of the wall. The double-tube multi-limb L-shaped special-shaped column comprises three groups of inner tube frames 20 and an outer tube frame 30 sleeved outside the three groups of inner tube frames 20. Figure 7 , Figure 8 and Fig. 9 As shown;

[0051] The three groups of inner cylinder frames 20 are arranged in an L shape. Figure 1 , Figure 2 and Figure 3 As shown, each of them includes four inner cylinder side columns 1; the adjacent sides of the inner cylinder frames 20 share the same inner cylinder side column 1; the upper parts of the three groups of inner cylinder frames 20 are embedded with the same upper connector 8;

[0052] The outer cylinder frame 30 includes an L-shaped column 11 and three outer cylinder side columns 5. Figure 4 , Figure 5 and Figure 6 As shown, the L-shaped column 11 and the three outer tube side columns 5 are sequentially connected to form an L-shaped arrangement;

[0053] The L-shaped column 11 is arranged in parallel with three groups of inner cylinder frames 20 arranged in an L shape;

[0054] The end faces of the two limbs of the L-shaped column 11 overlap with the end faces of the two limbs of the L-shaped special-shaped column in the present application, that is, the end faces of the two limbs of the L-shaped column 11 overlap with the side wall surfaces of the adjacent side outer tube side columns 5, which can ensure that the L-shaped column 11 will not expose the end faces of the two limbs of the L-shaped special-shaped column in the present application.

[0055] Specifically, the three groups of inner tube frames 20 and outer tube frames 30 together form a larger L-shaped structure, wherein one side of the L-shaped column 11 is used to connect the three groups of inner tube frames 20, and the other side is used to meet the corners with the wall, meeting the needs of various situations in the building;

[0056] A replaceable component 10 is connected between the L-shaped column 11 and the adjacent inner tube side column 1 .

[0057] A preferred embodiment provided by the present invention is as follows: Figure 1 , Figure 2 and Figure 3 As shown, the four inner tube side columns 1 of the inner tube frame 20 are vertically arranged to form a square column structure;

[0058] The square column structure includes an upper support surface, a multi-level middle support surface and a lower support surface in sequence along the height direction;

[0059] The upper support surface includes a corbel 3 arranged opposite to the adjacent side walls on a section of the inner tube side column 1, the inner tube side column 1 and the corbel 3 are integrally cast, and a corbel connecting beam 31 is connected between adjacent corbels 3, and the corbel connecting beam 31 and the corbel 3 are detachably connected by embedded parts. Specifically, the upper support surface can play a supporting role for the upper connector 8; the multi-level middle support surface and the lower support surface are arranged at intervals, and include an inner tube connecting beam 4 connected to the adjacent side walls of the adjacent inner tube side columns 1;

[0060] Specifically, the inner tube side columns 1 are all square columnar structures;

[0061] Further, the middle support surface and the lower support surface both include a portion of the inner tube side column 1 and an inner tube connecting beam 4 connected to adjacent side walls of the inner tube side column 1, wherein four inner tube connecting beams 4 are arranged at the same height to form at least one level of the middle support surface or the lower support surface;

[0062] The corbel 3 of the upper supporting surface is extended in the reverse direction to the area of ​​the side wall of the inner tube side column 1, and a steel corbel 2 is extended therefrom. The inner tube connecting beam 4 of the multi-level middle supporting surface is extended in the reverse direction to the area of ​​the side wall of the inner tube side column 1, and a steel corbel 2 is extended therefrom. Specifically, the inner tube connecting beam 4 is detachably connected to the inner tube side column 1 by using embedded parts, and the inner tube connecting beam 4 is made of I-shaped steel.

[0063] Further, such as Fig.10 , Fig.11 and Fig.12As shown, a plurality of replaceable components 10 are arranged between the lower supporting surface and the L-shaped column 11 and the two closest inner tube side columns 1. Specifically, corresponding replaceable components 10 are arranged on the reverse extension section of the inner tube connecting beam 4 on the two closest inner tube side columns 1. At the same time, a diagonal web rod 9 is also arranged between two groups of replaceable components 10 adjacent in the height direction, and one end of the diagonal web rod 9 is connected to the inner tube side column 1, and the other end is connected to the outer tube connecting limb column 51 or the L-shaped column 11.

[0064] Another preferred embodiment provided by the present invention is that the L-shaped column 11 of the outer tube frame 30 and the three outer tube side columns 5 are connected in sequence by a plurality of bearing main beams 6 arranged horizontally and vertically;

[0065] The lower top surfaces of the ends of the steel corbels 2 are arranged on the upper side of the upper top surface of the force-bearing main beam 6, and an outer tube connecting limb column 51 is vertically arranged in the gap of the lower top surface of the force-bearing main beam 6;

[0066] The inner tube connecting beam 4 extends in the reverse direction to the inner tube side column 1 and the outer tube connecting limb column 51. A replaceable component 10 is provided between the side walls. The replaceable component 10 is used for shear energy dissipation. Specifically, the replaceable component 10 is detachably connected to the inner tube side column 1 and the outer tube connecting limb column 51 through embedded parts. The function of the replaceable component 10 is to dissipate shear energy when the inner tube frame 20 and the outer tube frame 30 are relatively displaced in the height direction.

[0067] Specifically, the working principle of the present application is as follows: the inner tube frame 20 and the outer tube frame 30 are two relatively independent frame systems. The steel corbel 2 in the inner tube frame 20 is set on the upper part of the load-bearing main beam 6 that can undergo elastic deformation. The amount of relative displacement that can occur in the height direction of the inner tube frame 20 and the outer tube frame 30 during an earthquake is determined by the number of stages and component design of the steel corbel 2 and the load-bearing main beam 6. The more stages there are, the greater the amount of relative displacement that occurs in the height direction. When the inner tube frame 20 and the outer tube frame 30 in the multi-limb square column of the present application undergo relative displacement in the height direction, the energy is consumed by the replaceable component 10 that can be shear-deformed. The diagonal web 9 ensures that the distance between the inner tube frame 20 and the outer tube frame 30 is constant, ensuring that the multi-limb square column of the present application has sufficient overall stability. At the same time, the present application can replace the replaceable component 10 or adjust its position in a targeted manner after the earthquake, so as to quickly restore the structural function of the multi-limb square column of the present application.

[0068] A preferred embodiment provided by the present invention is as follows: Fig.14 As shown, the main bearing beam 6 comprises an I-beam 62, and shear members 63 are arranged on both sides of the web of the I-beam 62;

[0069] The upper part of the I-beam 62 and the outer side of the shear member 63 are provided with a coordinated deformation rubber 61. Specifically, the load-bearing main beam 6 includes the coordinated deformation rubber 61, which generates elastic deformation when squeezed by the steel corbel 2, thereby improving the overall stability of the structure.

[0070] Another preferred embodiment provided by the present invention is that a plurality of short-limb connecting beams 7 are horizontally and vertically arranged between adjacent outer tube connecting limb columns 51 and between the outer tube connecting limb columns 51 and the outer tube side columns 5. Specifically, the short-limb connecting beams 7 are detachably connected to the outer tube connecting limb columns 51 or the outer tube side columns 5 by using embedded parts. Specifically, when replacing or adjusting the replaceable component 10, the short-limb connecting beams 7 can be removed to facilitate replacement or adjustment of the replaceable component 10; wherein, the short-limb connecting beams 7 can further improve the stability of the present structure, and the short-limb connecting beams 7 are made of I-beams.

[0071] Another preferred embodiment provided by the present invention is that the centroid distance between adjacent outer tube connecting limb columns 51 is equal to the centroid distance between adjacent inner tube side columns 1. Specifically, this is to ensure that the replaceable component 10 and the diagonal web rod 9 can be connected between the inner tube side column 1 and the outer tube connecting limb column 51.

[0072] Furthermore, the two side walls of the L-shaped column 11 are connected to the main force-bearing beam 6 and the short-limb connecting beam 7 to form an L-shaped outer tube frame 30 , and the L-shaped column 11 provides support for the main force-bearing beam 6 and the short-limb connecting beam 7 .

[0073] Another preferred embodiment provided by the present invention is as follows: Fig.13 As shown, the upper end surface of the upper connecting head 8 is provided with an L-shaped groove for connecting the beam; specifically, the contact area between the side wall of the upper connecting head 8 and the inner tube side column 1 is provided with a groove for fitting the upper end portions of all the inner tube side columns 1.

[0074] Specifically, the replaceable component 10 in the present application adopts a damper or an I-beam.

[0075] Furthermore, since the main bearing beam 6 in the present application is elastic, and the inner cylinder frame 20, the upper connecting head 8, and the beam all have a large deadweight, the weight of these components themselves will cause the inner cylinder frame 20 and the outer cylinder frame 30 to have a relative displacement in the height direction, so the multi-limb L-shaped special-shaped column of the present application connecting the replaceable component 10 and the diagonal web rod 9 should be installed and connected after the upper connecting head 8 and the beam are set. In addition, when installing the multi-limb L-shaped special-shaped column of the present application, the top surface elevation of the inner cylinder frame 20 should be higher than the top surface elevation of the outer cylinder frame 30. After the upper connecting head 8 is installed, the top and bottom surface elevations of the inner cylinder frame 20 and the outer cylinder frame 30 should be controlled within a small error.

[0076] The present invention provides an assembly method of a double-tube multi-limb L-shaped special-shaped column with restorable functions, comprising the following steps:

[0077] S1: three groups of inner cylinder frames (20) are arranged in an L-shape according to preset positions, and adjacent sides of the inner cylinder frames (20) share the same inner cylinder side column (1);

[0078] S2: The same upper connector (8) is embedded at the upper ends of the inner tube side columns (1) at the upper parts of the three groups of inner tube frames (20) to form an inner tube structure;

[0079] S3: Cast or install the beam in the L-shaped groove in the upper connector (8);

[0080] S4: Build an outer cylinder frame (30) outside the inner cylinder frame (20), connect the replaceable component (10) between the inner cylinder side columns (1) adjacent to the L-shaped column (11), and complete the assembly of the double-cylinder multi-limb L-shaped special-shaped column.

[0081] Specifically, after step S1 is completed, the steel corbel 2 is connected to the preset position of the outer wall of the inner tube side column 1 to complete the setting of the inner tube frame 20;

[0082] The outer tube side columns 5 and the L-shaped columns 11 are arranged at predetermined positions, and the bearing main beam 6 is installed between the adjacent outer tube side columns 5 and the outer tube side columns 5 and the L-shaped columns 11, so that the upper top surface of the bearing main beam 6 is arranged in contact with the lower flange of the steel corbel 2;

[0083] The same upper connector 8 is embedded in the upper ends of the inner tube side columns 1 at the upper parts of the three sets of inner tube frames 20;

[0084] Cast or install the beam in the L-shaped groove in the upper connector 8;

[0085] An outer tube connecting limb column 51 is arranged between adjacent outer tube side columns 5 and between the outer tube side columns 5 and the L-shaped column 11, and then the diagonal web member 9 and the replaceable component 10 are installed, and finally the short limb connecting beam 7 is connected.

[0086] When using the L-shaped column of the present application, it is possible to choose whether to seal the exposed areas in the thickness direction of the two limbs of the L-shaped column, but when sealing, a technology or process that is easy to disassemble should be selected.

Claims

1. A double-tube multi-limb L-shaped special-shaped column with restorable function, characterized in that: It comprises three groups of inner cylinder frames (20) and an outer cylinder frame (30) sleeved outside the three groups of inner cylinder frames (20); The three groups of inner cylinder frames (20) are arranged in an L shape, and each includes four inner cylinder side columns (1); adjacent sides of the inner cylinder frames (20) share the same inner cylinder side column (1); the upper parts of the three groups of inner cylinder frames (20) are embedded with the same upper connecting head (8); The outer cylinder frame (30) comprises an L-shaped column (11) and three outer cylinder side columns (5), wherein the L-shaped column (11) and the three outer cylinder side columns (5) are connected in sequence to form an L-shaped arrangement; The L-shaped column (11) is arranged in parallel with three groups of inner cylinder frames (20) arranged in an L shape; A replaceable component (10) is connected between the L-shaped column (11) and the adjacent inner tube side column (1), and the replaceable component (10) is used for shear energy dissipation; The four inner tube side columns (1) are vertically arranged to form a square column structure; The square column structure includes an upper support surface, a multi-level middle support surface and a lower support surface; The upper support surface comprises corbels (3) arranged opposite to adjacent side walls of the inner tube side columns (1), and corbel connecting beams (31) are connected between the corbels (3) on adjacent inner tube side columns (1); the multi-level middle support surface and the lower support surface are arranged at intervals, and comprise inner tube connecting beams (4) connected to adjacent side walls of adjacent inner tube side columns (1); The upper support surface corbel (3) extends in the reverse direction to the area where the side wall of the inner tube side column (1) is provided with a steel corbel (2); the inner tube connecting beam (4) of the multi-level middle support surface extends in the reverse direction to the area where the side wall of the inner tube side column (1) is provided with a steel corbel (2); A load-bearing main beam (6) is arranged horizontally and vertically between the L-shaped column (11) and the three outer tube side columns (5); The lower top surfaces of the ends of the steel brackets (2) are arranged on the upper side of the upper top surface of the force-bearing main beam (6), and an outer tube connecting column (51) is vertically arranged in the gap between the lower top surfaces of the force-bearing main beam (6); The inner tube connecting beam (4) extends in the reverse direction to a position between the inner tube side column (1) and the side wall of the outer tube connecting limb column (51), and a replaceable component (10) is provided, wherein the replaceable component (10) is used for shear energy dissipation; The load-bearing main beam (6) comprises an I-beam (62), and shear-resistant parts (63) are arranged on both sides of the web of the I-beam (62); The upper part of the I-beam (62) and the outer side of the shear-resistant member (63) are provided with a coordinated deformation rubber (61); A plurality of short-limb connecting beams (7) are arranged horizontally and vertically between the outer cylinder connecting limb columns (51) and between the outer cylinder connecting limb columns (51) and the outer cylinder side columns (5).

2. According to claim 1, a double-tube multi-limb L-shaped special-shaped column with restorable function, characterized in that: The centroid distance between adjacent outer cylinder connecting limb columns (51) is equal to the centroid distance between adjacent inner cylinder side columns (1).

3. According to claim 1, a double-tube multi-limb L-shaped special-shaped column with restorable function, characterized in that: The upper end surface of the upper connecting head (8) is provided with an L-shaped groove for connecting the beam.

4. According to claim 1, a double-tube multi-limb L-shaped special-shaped column with restorable function, characterized in that: The replaceable component (10) is a damper or an I-beam.

5. A method for preparing a double-tube multi-limb L-shaped special-shaped column with restorable function, characterized in that: A double-tube multi-limb L-shaped special-shaped column with restorable function according to any one of claims 1 to 4 comprises the following steps: S1: three groups of inner cylinder frames (20) are arranged in an L-shape according to preset positions, and adjacent sides of the inner cylinder frames (20) share the same inner cylinder side column (1); S2: The same upper connector (8) is embedded at the upper ends of the inner tube side columns (1) at the upper parts of the three sets of inner tube frames (20) to form an inner tube structure; S3: Cast or install the beam in the L-shaped groove in the upper connector (8); S4: constructing an outer cylinder frame (30) outside the inner cylinder frame (20), connecting a replaceable component (10) between adjacent inner cylinder side columns (1) of the L-shaped column (11), and completing the assembly of the double-cylinder multi-limb L-shaped special-shaped column.

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