Frame column conversion structure for improving safety redundancy

Abstract

The utility model relates to the technical field of buildings, in particular to a frame column conversion structure capable of improving safety redundancy, which is characterized in that the bottom end of an inclined strut is fixedly connected with a lower-layer structural column, the top end of the inclined strut is fixedly connected with the bottom of an upper-layer structural column, and the included angle between the inclined strut and the lower-layer structural column is 10-30 degrees; the top end of the lower-layer structural column extends to a bottom floor beam plate of a retracting layer at the upper-layer structural column, the connecting point of the inclined strut and the lower-layer structural column is a lap joint, the lap joint is located below an upper conversion layer of the lower-layer structural column to form a triangular core area, and the inclined strut extends upwards in an inclined mode to penetrate through the upper conversion layer of the lower-layer structural column. The floor beam plate penetrates through the inclined struts, the vertical structure columns and the interior of the triangular core area. The whole structure is short in force transmission path, simple in stress, small in earthquake effect and capable of effectively preventing progressive collapse. And the structure is small in occupied space, and the used building space is square. The profile steel is arranged inside as required, ductility is good, and bearing capacity is high.

Description

Technical Field

[0001] The utility model relates to the technical field of construction, in particular to a frame column conversion structure with improved safety redundancy. Background Art

[0002] In the construction industry, the retraction of upper floors causes misalignment of structural columns above and below. When the misalignment is small, a lap column conversion is employed; when the misalignment is large, a beam-supported column conversion structure or a diagonal brace conversion structure is employed. The beam-supported column conversion structure transfers the vertical load of the upper-story misaligned columns to the adjacent lower-story structural columns via a transfer beam. This approach results in high loads transmitted from the upper structural columns to the transfer beam, resulting in complex loads, significant seismic effects, and low safety margins. The diagonal brace conversion structure creates triangular spaces, making it inconvenient to use and poor in preventing progressive collapse. Utility Model Content

[0003] In order to overcome the technical defects that when the upper floor is retracted in large dimensions, the beam-support-column conversion structure transmits a large load to the conversion beam, resulting in complex forces, large seismic effects, and low safety redundancy; and the diagonal brace conversion structure forms a triangular space, is inconvenient to use, and has poor anti-progressive collapse performance, the utility model provides a frame column conversion structure with improved safety redundancy.

[0004] The utility model provides a frame column conversion structure with improved safety redundancy, comprising lower structure columns, upper structure columns, and a plurality of spaced-apart floor beams. The floor beams are perpendicular to the lower structure columns and the upper structure columns, the upper structure columns are retracted toward the inner side of the building, and the lower structure columns and the upper structure columns are horizontally offset from each other. The utility model is characterized in that the structure further comprises a diagonal brace, the bottom end of the diagonal brace being fixedly connected to the lower structure column, the top end of the diagonal brace being fixedly connected to the bottom of the upper structure column, the angle between the diagonal brace and the lower structure column being 10° to 30°, the top end of the lower structure column extending to the bottom floor beam of the retracted layer at the upper structure column, the connection point between the diagonal brace and the lower structure column being a lap joint, the lap joint being located below the upper transition layer of the lower structure column to form a triangular core area, the diagonal brace extending obliquely upward through the upper transition layer of the lower structure column, and the floor beams passing through the diagonal brace, the vertical structure columns, and the interior of the triangular core area. The overall structure has a short force transmission path, effectively preventing progressive collapse. The structure occupies a small space and uses a square building space. The internal steel is configured as needed, with good ductility and high bearing capacity.

[0005] In the aforementioned frame column conversion structure, the upper structural columns are fixedly connected to the diagonal braces. The diagonal braces are also supported by lower structural columns and floor beams on the side away from the building, creating a double-layer support structure. This double-layer support structure is mutually redundant, thereby enhancing safety redundancy. Furthermore, the tops of the lower structural columns extend to the bottom floor beams at the level where the upper structural columns are retracted, ensuring a straight exterior facade, facilitating decoration and avoiding the problem of difficult-to-decorate sloped facades.

[0006] Preferably, the internal steel sections of the lower structural columns and the diagonal braces in the triangular core area are welded, and the internal reinforcements are interlaced and fixed. In the upper transfer layer of the lower structural columns, the reinforcements of the floor beams and slabs respectively penetrate the internal structures of the lower structural columns and the upper structural columns. The internal steel sections of the upper structural columns and the internal steel sections of the diagonal braces are welded, and the reinforcements of the two are interlaced and fixed. The lower structural columns and the steel sections of the bottom floor beams and slabs of the retracted layer at the upper structural columns are welded, and the internal reinforcements are interlaced and fixed. This arrangement ensures that the internal structures of the upper structural columns, lower structural columns, and diagonal braces are fixedly connected to ensure the load-bearing effect.

[0007] Preferably, the steel sections of the lower and upper structural columns are square steel, with longitudinal stiffening ribs arranged along the length of the square steel inside. The longitudinal stiffening ribs at the intersection of the lower or upper structural columns and the floor beams are also connected to transverse stiffening ribs with casting holes. The lower and upper structural columns are also provided with multiple longitudinal main bars and stirrups arranged circumferentially around the square steel. This arrangement provides a strong structure.

[0008] Preferably, the floor beams are provided with section steel, and a first horizontal reinforcement mesh and a second horizontal reinforcement mesh are provided above and below the section steel, respectively, connected by tie bars. The first horizontal reinforcement mesh and the second horizontal reinforcement mesh each include a plurality of longitudinal reinforcements and a plurality of transverse reinforcements arranged in a crosswise manner. This arrangement provides a strong structure.

[0009] Preferably, the lower structure columns, upper structure columns and diagonal braces are steel tube concrete columns or pure steel columns, so that the structure is strong.

[0010] Compared with existing technologies, the technical solution provided by this utility model has the following advantages: the structure can be used when the upper floors are retracted. The overall structure has a short force transmission path, simple force distribution, minimal seismic effects, and effectively prevents progressive collapse. Furthermore, the structure occupies a small space, making the building space more square. The internal configuration of steel sections as needed provides good ductility and high load-bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention, and together with the description, serve to explain the principles of the present invention.

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0013] Figure 1This is a structural schematic diagram of a frame column conversion structure for improving safety redundancy according to an embodiment of the present invention;

[0014] Figure 2 This is a schematic diagram of the internal structure of a frame column conversion structure for improving safety redundancy according to an embodiment of the present invention;

[0015] Figure 3 This is a schematic structural diagram of the lower structural column and the upper structural column in an embodiment of the present invention.

[0016] In the figure: 1. Lower structural column; 2. Upper structural column; 3. Floor beam; 4. Diagonal brace; 5. Triangular core area; 6. Square steel; 7. Longitudinal stiffening rib; 8. Transverse stiffening rib; 9. Casting hole; 10. Longitudinal main reinforcement; 11. Stirrup. DETAILED DESCRIPTION

[0017] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the scheme of the present invention will be further described below. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0018] In the description, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance. It should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, removable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms based on specific circumstances.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0021] In one embodiment, Figure 1As shown, a frame column conversion structure for improving safety redundancy includes a lower structure column 1, an upper structure column 2 and a plurality of spaced floor beams 3, the floor beams 3 are perpendicular to the lower structure columns 1 and the upper structure columns 2, the upper structure columns 2 are retracted toward the inner side of the building body, and there is a certain horizontal offset distance between the lower structure columns 1 and the upper structure columns 2. It is characterized in that it also includes a diagonal brace 4, the bottom end of the diagonal brace 4 is fixedly connected to the lower structure column 1, and the top end of the diagonal brace 4 is fixedly connected to the bottom of the upper structure column 2 Fixed connection, the angle between the diagonal brace 4 and the lower structural column 1 is 10°~30°, the top of the lower structural column 1 extends to the bottom floor beam 3 of the retracted layer at the upper structural column 2, the connection point between the diagonal brace 4 and the lower structural column 1 is the overlap node, and the overlap node is located below the upper transfer layer of the lower structural column 1 to form a triangular core area 5, the diagonal brace 4 extends obliquely upward through the upper transfer layer of the lower structural column 1, and the floor beam 3 passes through the diagonal brace 4, the vertical structural column and the inside of the triangular core area 5. The overall structure has a short force transmission path, which effectively prevents continuous collapse. In addition, the structure occupies a small space and uses a square building space. The steel sections are configured internally as needed, with good ductility and high bearing capacity.

[0022] In the frame column conversion structure described above, the upper structural columns 2 are fixedly connected to the diagonal braces 4. The diagonal braces 4 are also supported by lower structural columns 1 and floor beams 3 on the side away from the building, creating a double-layer support structure. This double-layer support structure is mutually redundant, thereby improving safety redundancy. Furthermore, the tops of the lower structural columns 1 extend to the bottom floor beams 3 of the level where the upper structural columns 2 are retracted, ensuring a straight exterior facade, facilitating decoration and avoiding the problem of difficult-to-decorate sloped facades.

[0023] Based on the above embodiments, in a preferred embodiment, the internal steel sections of the lower structural columns 1 and the diagonal braces 4 in the triangular core area 5 are welded, and the internal reinforcements are interlaced and fixed; in the upper transfer layer of the lower structural column 1, the reinforcements of the floor beam slab 3 respectively penetrate the internal structure of the lower structural column 1 and the internal structure of the upper structural column 2; the internal steel sections of the upper structural column 2 and the internal steel sections of the diagonal braces 4 are welded, and the reinforcements of the two are interlaced and fixed; the steel sections of the bottom floor beam slab 3 of the retracted layer at the lower structural column 1 and the upper structural column 2 are welded, and the internal reinforcements are interlaced and fixed. This arrangement fixes the internal structures of the upper structural column 2, the lower structural column 1, and the diagonal braces 4, ensuring the load-bearing effect.

[0024] Based on the above embodiment, in a preferred embodiment, the steel sections of the lower structural columns 1 and the upper structural columns 2 are square steels 6, and longitudinal stiffening ribs 7 are arranged along the length of the square steels 6. The longitudinal stiffening ribs 7 at the intersection of the lower structural columns 1 or the upper structural columns 2 and the floor beams 3 are further connected to transverse stiffening ribs 8, each having a casting hole 9. The lower structural columns 1 and the upper structural columns 2 are also provided with multiple longitudinal main bars 10 and stirrups 11 arranged circumferentially around the square steels 6. This arrangement provides a strong structure.

[0025] Based on the above embodiment, in a preferred embodiment, the floor beam 3 is provided with section steel, and a first horizontal reinforcement mesh and a second horizontal reinforcement mesh are provided above and below the section steel, respectively, connected by tie bars. The first horizontal reinforcement mesh and the second horizontal reinforcement mesh each include a plurality of longitudinal reinforcements and a plurality of transverse reinforcements arranged in a cross pattern. This arrangement provides a strong structure.

[0026] Based on the above embodiment, in a preferred embodiment, the lower structure columns 1, the upper structure columns 2 and the diagonal braces 4 are steel tube concrete columns or pure steel columns, so that the structure is strong.

[0027] The above description is only a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Although detailed descriptions have been made with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents; and such modifications or replacements do not deviate from the essence of the corresponding technical solutions within the scope of the technical solutions of the embodiments, and they should all be covered by the scope of protection of the claims.

Claims

1. A frame column conversion structure for improving safety redundancy, comprising a lower structure column (1), an upper structure column (2) and a plurality of spaced-apart floor beams (3), wherein the floor beams (3) are perpendicular to the lower structure column (1) and the upper structure column (2), the upper structure column (2) is retracted toward the inner side of the building, and a certain horizontal offset distance exists between the lower structure column (1) and the upper structure column (2), and the structure is characterized in that: The invention also includes a diagonal brace (4), the bottom end of the diagonal brace (4) is fixedly connected to the lower structural column (1), the top end of the diagonal brace (4) is fixedly connected to the bottom of the upper structural column (2), the angle between the diagonal brace (4) and the lower structural column (1) is 10°~30°, the top end of the lower structural column (1) extends to the bottom floor beam (3) of the retracted layer at the upper structural column (2), the connection point between the diagonal brace (4) and the lower structural column (1) is the lap joint, and the lap joint is located below the upper transition layer of the lower structural column (1) to form a triangular core area (5), the diagonal brace (4) extends obliquely upward to penetrate the upper transition layer of the lower structural column (1), and the floor beam (3) penetrates the diagonal brace (4), the vertical structural column and the inside of the triangular core area (5).

2. A frame column conversion structure for improving safety redundancy according to claim 1, characterized in that: The internal steel sections of the lower structural columns (1) and the diagonal braces (4) in the triangular core area (5) are welded, and the internal steel bars are interlaced and fixed to each other; in the upper transfer layer of the lower structural columns (1), the steel bars of the floor beams (3) respectively penetrate the internal structure of the lower structural columns (1) and the internal structure of the upper structural columns (2); the internal steel sections of the upper structural columns (2) and the internal steel sections of the diagonal braces (4) are welded, and the steel bars of the two are interlaced and fixed to each other; the steel sections of the bottom floor beams (3) of the retracted layer at the lower structural columns (1) and the upper structural columns (2) are welded, and the internal steel bars are interlaced and fixed to each other.

3. The frame column conversion structure for improving safety redundancy according to claim 1, characterized in that: The steel sections of the lower structural columns (1) and the upper structural columns (2) are square steels (6), and longitudinal stiffening ribs (7) arranged along the length direction of the square steels (6) are provided inside the square steels (6). The longitudinal stiffening ribs (7) at the intersection of the lower structural columns (1) or the upper structural columns (2) and the floor beams (3) are also connected to transverse stiffening ribs (8), and casting holes (9) are opened on the transverse stiffening ribs (8). The lower structural columns (1) and the upper structural columns (2) are also provided with a plurality of longitudinal main bars (10) and stirrups (11) arranged circumferentially around the square steels (6).

4. The frame column conversion structure for improving safety redundancy according to claim 3, characterized in that: Section steel is provided in the floor beam (3), and a first horizontal steel mesh and a second horizontal steel mesh connected by tie bars are provided above and below the section steel, respectively. The first horizontal steel mesh and the second horizontal steel mesh both include a plurality of longitudinal steel bars and a plurality of transverse steel bars arranged crosswise.

5. The frame column conversion structure for improving safety redundancy according to claim 1, characterized in that: The lower structural columns (1), the upper structural columns (2) and the diagonal braces (4) are steel tube concrete columns or pure steel columns.

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