Corrugated steel plate improved steel frame after-earthquake-damage progressive collapse resisting sub-structure component

Abstract

The utility model belongs to the technical field of steel frame structures, and particularly relates to a corrugated steel plate improved steel frame post-earthquake-damage progressive collapse resisting substructure component which comprises a steel column and a steel beam, the steel beam is fixedly connected to the steel column, a stiffened plate is fixedly connected to the steel beam, corrugated steel plate bodies are assembled on the steel column and the stiffened plate, and the steel column comprises a first center plate. First edge plates are fixedly connected to the two sides of the first center plate, mounting grooves are formed in the positions, located on the two sides of the first center plate, of the first edge plates, the steel beam comprises a second center plate and two second edge plates, the second center plate is fixedly connected to the first edge plates, and the two second edge plates are fixedly connected to the upper side and the lower side of the second center plate respectively. A second node load standby transmission path can be provided when the steel frame formed by the steel column and the steel beam faces progressive collapse resistance after earthquake load, progressive collapse resistance of a multi-load standby path method is achieved, and the earthquake-resistant and progressive collapse-resistant design can be met at the same time.

Description

Technical Field

[0001] This utility model belongs to the technical field of steel frame structures, and particularly relates to a sub-structural component of a corrugated steel plate-improved steel frame for resisting progressive collapse after earthquake damage. Background Technique

[0002] In recent years, due to the gradual development of building structures towards high-rise, large-scale and complex directions, the safety requirements for building structures have become increasingly stringent. During the design service life, steel structures will inevitably face various accidental loads such as explosions, fires, impacts and earthquakes. The action of these accidental loads may cause local damage to the structure and extend to other parts, thereby causing the progressive collapse of the building structure. The initial damage range of progressive collapse is very small and the failure process is progressive, rather than the simultaneous collapse of the entire structure.

[0003] When a steel frame structure undergoes progressive collapse due to an earthquake, if a relay method can be provided to offer a second alternative load transfer path for the joints after the steel frame is damaged by the earthquake, thereby realizing the anti-progressive collapse design of "multiple alternative load paths", it can provide valuable escape time for the people inside the building and greatly improve the seismic and anti-progressive collapse performance. Content of the Utility Model

[0004] The purpose of this utility model is to provide a sub-structural component of a corrugated steel plate-improved steel frame for resisting progressive collapse after earthquake damage, which can provide a second alternative load transfer path for the joints to resist progressive collapse after the steel frame formed by steel columns and steel beams is subjected to earthquake loads, realizing the anti-progressive collapse main design of the "multiple alternative load path method", and having high seismic and anti-progressive collapse performance.

[0005] The technical solution adopted by this utility model is specifically as follows:

[0006] A sub-structural component of a corrugated steel plate-improved steel frame for resisting progressive collapse after earthquake damage, including steel columns and steel beams. The steel beams are fixedly connected to the steel columns, and stiffening plates are fixedly connected to the steel beams. A corrugated steel plate body is assembled on the steel columns and the stiffening plates.

[0007] Furthermore, the steel column includes a first central plate, and first side plates are fixedly connected to both sides of the first central plate. Installation grooves are provided on the first side plates and on both sides of the first central plate. The steel beam includes a second central plate fixedly connected to the first side plate and two second side plates. The two second side plates are respectively fixedly connected to the upper side and the lower side of the second central plate. The upper and lower ends of the stiffening plate are respectively fixedly connected to the two second side plates, and the side of the stiffening plate is fixedly connected to the second central plate. Installation grooves are provided on the stiffening plate. The installation grooves on the stiffening plate and the first side plate that face each other form a group, and the corrugated steel plate body is installed inside the installation grooves of the same group.

[0008] Furthermore, vertical adjustment groups are installed on both the upper and lower sides of the installation groove on the first side plate and the stiffening plate, and movable clamping plates are installed at one ends of the vertical adjustment groups close to the corrugated steel plate body.

[0009] Furthermore, a profiling portion is provided on one side of the movable clamping plate close to the corrugated steel plate body.

[0010] Furthermore, the vertical adjustment group includes a fixed bracket fixedly connected to the stiffening plate or the first side plate, a threaded rod is threadedly connected to the fixed bracket, and one end of the threaded rod is rotatably connected to the movable clamping plate.

[0011] Furthermore, a guide rod is fixedly connected to the movable clamping plate, and the guide rod is slidably connected to the fixed bracket.

[0012] The technical effects achieved by this utility model are as follows:

[0013] A substructure member of an improved steel frame of a corrugated steel plate for post-earthquake damage anti-progressive collapse in this utility model is provided with corrugated steel plate bodies on steel columns and steel beams. As a temporary support for the steel columns and steel beams, the corrugated steel plate bodies can provide a second load transfer path for the frame structure to resist progressive collapse after the steel frame formed by the steel columns and steel beams is subjected to earthquake loads, realizing the anti-progressive collapse design of the "multiple load backup path method", having high seismic and anti-progressive collapse performance, and meeting the seismic and anti-progressive collapse design at the same time. Description of the Drawings

[0014] Figure 1 is the structural schematic diagram of this utility model;

[0015] Figure 2 is the partial structural schematic diagram of this utility model;

[0016] Figure 3 is this utility model Figure 1 the partial enlarged view at A;

[0017] Figure 4 is this utility model Figure 1 the front view of the structure at A.

[0018] In the drawings, the list of components represented by each reference numeral is as follows:

[0019] 1. First central plate; 2. First side plate; 3. Second central plate; 4. Second side plate; 5. Stiffening plate; 6. Installation groove; 7. Corrugated steel plate body; 8. Movable clamping plate; 9. Profiling portion; 10. Fixed bracket; 11. Threaded rod; 12. Guide rod. Detailed Embodiments

[0020] In order to make the purpose and advantages of the present utility more clear and understandable, the following specifically describes the present utility in combination with embodiments. It should be understood that the following text is only used to describe one or several specific implementation manners of the present utility, and does not strictly limit the scope of protection of the specific claims of the present utility.

[0021] As Figure 1-2 shown, an improved steel frame post-collapse resistant substructure member of a corrugated steel plate includes a steel column and a steel beam. The steel beam is fixedly connected to the steel column, and the connection method can be pure welding, pure bolt connection or bolt-welding hybrid connection. A stiffening plate 5 is fixedly connected to the steel beam. A corrugated steel plate body 7 is assembled on the steel column and the stiffening plate 5. A second joint load transfer path on the steel column and the stiffening plate 5 is formed through the corrugated steel plate body 7. When the connection structure between the steel column and the steel beam is damaged due to an earthquake, a temporary support can be formed through the corrugated steel plate body 7 to connect and support the steel column and the steel beam, providing a second joint load backup transfer path for the frame structure to resist progressive collapse, and realizing the anti-progressive collapse design of the "multiple load backup path method", with high seismic safety.

[0022] As Figure 1-2 shown, the steel column includes a first central plate 1. First side plates 2 are fixedly connected to both sides of the first central plate 1. Installation grooves 6 are provided on the first side plates 2 and on both sides of the first central plate 1. The steel beam includes a second central plate 3 fixedly connected to the first side plates 2 and two second side plates 4. The two second side plates 4 are respectively fixedly connected to the upper side and the lower side of the second central plate 3. The upper and lower ends of the stiffening plate 5 are respectively fixedly connected to the two second side plates 4, and the side of the stiffening plate 5 is fixedly connected to the second central plate 3, thus forming a stable frame structure. Installation grooves 6 are provided on the stiffening plate 5. The installation grooves 6 on the stiffening plate 5 and the first side plates 2 that are opposite to each other form a group. The corrugated steel plate body 7 is installed inside the installation grooves 6 of the same group. The above structure is relatively simple, with low production cost, and the height of the installation groove 6 is greater than the height of the corrugated steel plate body 7, and the width of the installation groove 6 is greater than the width of the corrugated steel plate body 7. There is a certain installation gap between the installation groove 6 and the corrugated steel plate body 7, which is convenient for the installation of the corrugated steel plate body 7.

[0023] As Figure 1-3 shown, vertical adjustment groups are installed on the first side plates 2 and the stiffening plate 5 and on the upper and lower sides of the installation groove 6. A movable clamping plate 8 is installed at one end of the vertical adjustment group close to the corrugated steel plate body 7. After installation, by driving the movable clamping plate 8 to move through the vertical adjustment group, the corrugated steel plate body 7 can be clamped and fixed by the two movable clamping plates 8, reducing the phenomenon of the corrugated steel plate body 7 falling off.

[0024] As Figure 3-4As shown in the figure, a profiling part 9 is provided on one side of the movable splint 8 close to the corrugated steel plate body 7. The profiling part 9 is a wave structure that is profiled with the corrugated steel plate body 7, so that there is a large contact area between the movable splint 8 and the corrugated steel plate body 7, improving the stability effect during fixation and reducing the damage to the corrugated steel plate body 7 during clamping.

[0025] As Figure 2-4 shown in the figure, the vertical adjustment group includes a fixed bracket 10 fixedly connected to the stiffening plate 5 or the first side plate 2. A threaded rod 11 is threadedly connected to the fixed bracket 10. One end of the threaded rod 11 is rotatably connected to the movable splint 8. At this time, by rotating the threaded rod 11, the position of the movable splint 8 can be adjusted. Its adjustment method is relatively simple and relatively stable after adjustment.

[0026] At the same time, a guide rod 12 is fixedly connected to the movable splint 8. The guide rod 12 is slidably connected to the fixed bracket 10. At this time, through the arrangement of the guide rod 12, the movable splint 8 can be limited, so that it is not necessary to manually hold and limit the movable splint 8 when operating the threaded rod 11, reducing the operation difficulty at high altitude.

[0027] The working principle of this utility model is as follows: After the steel column and the steel beam are connected, the corrugated steel plate body 7 is placed inside the installation groove 6, and then the threaded rod 11 is rotated to make the profiling part 9 abut against the corrugated steel plate body 7, and the installation and fixation of the corrugated steel plate body 7 can be completed.

[0028] When the connection structure of the steel column and the steel beam is damaged due to seismic loads, a temporary support can be formed through the corrugated steel plate body 7 to connect and support the steel column and the steel beam.

[0029] In summary, this technical solution adds a corrugated steel plate body 7 between the steel column and the steel beam. By using the corrugated steel plate body 7 as a temporary support for the steel column and the steel beam, it can provide a second load transfer path for the frame structure to resist progressive collapse after the steel frame formed by the steel column and the steel beam is damaged by earthquake, realizing the anti-progressive collapse design of the "multiple load backup path method", and having high seismic and anti-progressive collapse performance.

[0030] The above are only the preferred embodiments of this utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of this utility model, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of this utility model. The structures, devices and operation methods not specifically described and explained in this utility model are implemented according to the conventional means in the art without special instructions and limitations.

Claims

1. A substructure member for resisting continuous collapse of a corrugated steel plate improved steel frame after earthquake damage, comprising a steel column and a steel beam, wherein the steel beam is fixedly connected to the steel column, characterized in that: A stiffening plate (5) is fixedly connected to the steel beam, and a corrugated steel plate body (7) is assembled on the steel column and the stiffening plate (5); The steel column comprises a first center plate (1), both sides of which are fixedly connected to first side plates (2), and mounting grooves (6) are provided on the first side plates (2) and on both sides of the first center plate (1); the steel beam comprises a second center plate (3) fixedly connected to the first side plate (2) and two second side plates (4), the two second side plates (4) being fixedly connected to the upper side and the lower side of the second center plate (3), respectively; the upper and lower ends of the stiffened plate (5) are respectively fixedly connected to the two second side plates (4), the side edges of the stiffened plate (5) are fixedly connected to the second center plate (3), the stiffened plate (5) is provided with mounting grooves (6), the stiffened plate (5) and the mounting grooves (6) opposite to each other on the first side plate (2) form a group, and the corrugated steel plate body (7) is installed inside the mounting grooves (6) of the same group.

2. The corrugated steel plate improved steel frame anti-continuous collapse substructure member after earthquake damage according to claim 1, characterized in that: A vertical adjustment group is installed on the first edge plate (2) and the stiffened plate (5) and on both upper and lower sides of the installation groove (6), and a movable clamping plate (8) is installed at one end of the vertical adjustment group close to the corrugated steel plate body (7).

3. The corrugated steel plate improved steel frame anti-continuous collapse substructure member after earthquake damage according to claim 2, characterized in that: A contoured portion (9) is provided on one side of the movable clamping plate (8) close to the corrugated steel plate body (7).

4. The corrugated steel plate improved steel frame anti-continuous collapse substructure member after earthquake damage according to claim 2, characterized in that: The vertical adjustment group comprises a fixed bracket (10) fixedly connected to the stiffened plate (5) or the first edge plate (2), a threaded rod (11) being threadedly connected to the fixed bracket (10), and one end of the threaded rod (11) being rotatably connected to the movable clamping plate (8).

5. The corrugated steel plate improved steel frame anti-continuous collapse substructure member after earthquake damage according to claim 4, characterized in that: A guide rod (12) is fixedly connected to the movable clamping plate (8), and the guide rod (12) is slidably connected to the fixed bracket (10).

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