Fireproof large-space steel structure

Abstract

The utility model relates to the technical field of steel structures, and discloses a fireproof large-space steel structure which comprises a steel column, the outer portion of the steel column is connected with a supporting frame in a sliding mode, two fixing mechanisms are installed on the periphery of the supporting frame, and steel beams are connected into the periphery of the supporting frame in a sliding mode. Supporting mechanisms are fixedly connected to the close sides of the multiple steel beams, absorbing mechanisms are fixedly connected to the inner walls of the steel columns, the multiple supporting mechanisms comprise connecting plates, and the far sides of the multiple connecting plates are fixedly connected to the close sides of the multiple steel beams correspondingly; and positioning columns are fixedly connected to the upper end and the lower end of the connecting plate. According to the utility model, the sliding plate is pushed to perform reset sliding, and then the trapezoidal plate is pushed to perform reset sliding and is clamped in the steel column, so that preliminary limiting of the steel column and the steel beam is completed, a tool does not need to be found for installation to provide support, and then the installation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel structure technical field especially relates to a fire -proof large -space steel structure. BACKGROUND

[0002] The fire -proof large -space steel structure refers to the large -space steel structure building that especially pays attention to and implements the fire -proof measure in the design and construction process, this structure usually adopts steel as the main building material, since steel is non - burning material, but its fire - resistance is relatively poor, therefore needs to improve its fire - fighting ability through a series of special design and construction technology.

[0003] Through the search, the steel beam fire -proof covering joint of steel structure residence of Chinese patent with the announcement number CN215367936U is disclosed, the steel beam fire -proof covering joint of steel structure residence includes structure floor, ALC inner partition wall, steel beam, ALC fire -proof board and multiple connecting angle codes, the steel beam is H-shaped structure, the steel beam upper side is fixedly connected with the structure floor, the steel beam lower side is fixedly connected with the ALC inner partition wall, the ALC fire -proof board is fixedly connected in the steel beam, multiple connecting angle codes are connected between the steel beam and the ALC fire -proof board by locking piece, wherein, the steel beam plays the role of fixed link for the structure floor and the ALC inner partition wall, the ALC fire -proof board plays the role of sound -proofing and fire -proofing for the utility model, multiple connecting angle codes are used to improve the link stability of steel beam and ALC fire -proof board, locking piece further improves the integrity and stability between steel beam, ALC fire -proof board and locking piece, the joint of the utility model can be factory -precast, on -site assembly type installation, and the construction is convenient and fast, and the structure is safe and reliable.

[0004] The above -mentioned content can connect and fix the steel beam and the ALC fire -proof board through the locking piece in the specific use process, but in the implementation process, it still needs to find and install the auxiliary supporting tool to support the crossbeam, and the process of finding and installing will lead to the reduction of installation efficiency, therefore, aiming at the above -mentioned insufficient, a fire -proof large -space steel structure is provided to solve the above -mentioned problems. UTILITY MODEL CONTENT

[0005] In order to make up for the above -mentioned insufficient, the utility model provides a fire -proof large -space steel structure, which aims at improving the problem that part of the fire -proof large -space steel structure in the prior art needs to find and install the auxiliary supporting tool, leading to the reduction of installation efficiency.

[0006] In order to achieve the above -mentioned purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a kind of fireproof large space steel structure, including steel column, the outside of the steel column is slidably connected with support frame, two fixed mechanisms are installed in the four around of the support frame, the inside of the four around of the support frame is slidably connected with steel beam, the similar side of multiple steel beams is fixedly connected with support mechanism, the inner wall of the steel column is fixedly connected with absorption mechanism, multiple support mechanisms include connecting plate, the similar side of multiple connecting plates is respectively fixedly connected in the similar side of multiple steel beams, the upper and lower ends of the connecting plate are fixedly connected with positioning column, the outside of the positioning column is equipped with spring one, the outside of two positioning columns is slidably connected with two sliding plates, the similar side of two sliding plates is fixedly connected with trapezoidal plate, the inside of the connecting plate is equipped with cavity, the similar side of two sliding plates is fixedly connected with reset component;

[0008] Through the above technical scheme: the outside of the steel column is slidably connected with the support frame, the fixed mechanism is installed in the four around of the support frame, is used for strengthening the connecting strength with the steel column, the inside of the support frame is slidably connected with the steel beam, the steel beam is connected between by support mechanism, support mechanism includes connecting plate, positioning column, spring one, sliding plate, trapezoidal plate and reset component, is used for providing elastic support and reset function, strengthens the stability of overall structure, absorption mechanism is fixed in the inner wall of the steel column, is used for absorbing stress when deformation, further promotes the anti-deformation ability and fireproof performance of structure, overall design is through sliding connection, elastic reset and stress absorption, realizes the stability, flexibility and fireproof property of structure.

[0009] As further description of the above technical scheme:

[0010] Two reset components include elastic block, the similar side of two elastic blocks is respectively fixedly connected in the similar side of two sliding plates, and the outside of one of the elastic blocks is fixedly connected with two elastic members, and the outside of another elastic block is fixedly connected with another elastic member.

[0011] Through the above technical scheme: two elastic blocks are respectively fixed in the inside of two sliding plates, for providing elastic reset function, one of the elastic blocks is connected with two elastic members, and another elastic block is connected with one elastic member, the elastic members can be deformed and restored to its original shape when stressed, further enhance the stability and anti-deformation ability of structure, ensure that sliding plate can reset quickly after being stressed.

[0012] As further description of the above technical scheme:

[0013] The inside of one of the elastic blocks is equipped with one arc-shaped groove, and the inside of another elastic block is equipped with other two arc-shaped grooves, and the outside of the elastic member is slidably connected in the inside of the arc-shaped groove.

[0014] Through the technical scheme, the outer part of the elastic member is slidingly connected in the arc-shaped groove, the arc-shaped groove provides a moving space for the elastic member, so that the elastic member can slide and deform under stress, and restore to the original state during resetting, thereby enhancing the flexibility and stability of the elastic member, ensuring a smoother resetting process, and further improving the anti-deformation capability and overall stability of the structure.

[0015] Further description of the above technical scheme:

[0016] The absorbing mechanism comprises a vertical plate, the outer part of the vertical plate is fixedly connected to the inner wall of the steel column, two side plates are fixedly connected to each side of the vertical plate, a guide shaft is fixedly connected to the side of the two side plates, spring No. 2 is sleeved on the outer part of the guide shaft, two opening plates are slidingly connected to the outer part of the guide shaft, rotating plates are rotatably connected to the inner part of the opening plates, and concave plates are rotatably connected to the end of the rotating plates away from the vertical plate.

[0017] Through the technical scheme, the vertical plate is fixed to the inner wall of the steel column to provide basic support, the side plates are connected to the four sides of the vertical plate to fix the guide shaft, the guide shaft provides a sliding track for the opening plates, spring No. 2 is sleeved on the guide shaft to provide an elastic resetting force, the opening plates are slidingly connected to the guide shaft, the rotating plates are rotatably connected to the inner part of the opening plates, the rotating plates push the opening plates to slide and transmit stress to the concave plates, the concave plates absorb and disperse the deformation stress by contacting the connecting plates, and the overall design effectively absorbs stress through sliding, rotation and elastic resetting, thereby enhancing the stability and anti-deformation capability of the structure.

[0018] Further description of the above technical scheme:

[0019] The outer part of the two trapezoidal plates is slidingly connected to the inner part of the connecting plate, and the outer part of the two sliding plates is slidingly connected to the inner part of the connecting plate.

[0020] Through the technical scheme, the outer part of the two trapezoidal plates and the two sliding plates is slidingly connected to the inner part of the connecting plate, the stability of the trapezoidal plates and the sliding plates during sliding is ensured through the limitation of the connecting plate, the trapezoidal plates can be better clamped with the inner part of the steel column, and the sliding plates can compress spring No. 1 and store elastic potential energy under stress to realize the resetting function, thereby enhancing the stability and anti-deformation capability of the overall structure.

[0021] Further description of the above technical scheme:

[0022] The outer part of the two trapezoidal plates is slidingly connected to the inner part of the connecting plate, and the outer part of the two sliding plates is slidingly connected to the inner part of the connecting plate.

[0023] Through the technical scheme, the two sliding plates are fixed at the opposite ends of the two springs, and the reset function is realized through the elastic effect of the springs; the two elastic blocks are slidably connected to the inside of the connecting plate, ensuring the stability of sliding; the multiple connecting plates and the trapezoidal plates are slidably connected to the inside of the steel column, and the connecting plates and the trapezoidal plates can stably slide and closely adhere to the steel column, thereby enhancing the stability, anti-deformation ability and installation flexibility of the overall structure.

[0024] Further description of the above technical scheme is as follows:

[0025] The multiple fixing mechanisms each include a right-angle plate, the outside of the multiple right-angle plates is slidably connected to the four sides of the support frame, and the inside of the right-angle plate is threadedly connected with multiple screws, two of the screws are threadedly connected to the inside of the steel column through the support frame, and the other two screws are boltedly connected to the inside of the steel beam through the support frame;

[0026] Through the technical scheme, the multiple fixing mechanisms each include a right-angle plate, the outside of the multiple right-angle plates is slidably connected to the four sides of the support frame, and the inside of the right-angle plate is threadedly connected with multiple screws, two of the screws are threadedly connected to the inside of the steel column through the support frame, and the other two screws are boltedly connected to the inside of the steel beam through the support frame, thereby enhancing the connection strength between the support frame and the steel column and the steel beam, ensuring the stability and stability of the overall structure.

[0027] Further description of the above technical scheme is as follows:

[0028] The opposite sides of the multiple recessed plates are in contact with the proximal sides of the multiple connecting plates, and the proximal ends of the two opening plates are fixedly connected to the upper and lower ends of the second spring;

[0029] Through the technical scheme, the opposite sides of the multiple recessed plates are in contact with the proximal sides of the multiple connecting plates, and the proximal ends of the two opening plates are fixedly connected to the upper and lower ends of the second spring, so that the opening plates can stretch or compress the second spring when sliding, store elastic potential energy and provide a reset force, thereby dispersing external stress and enhancing the stability and anti-deformation ability of the structure.

[0030] The utility model has the advantages of:

[0031] 1. In the utility model, after the connecting plate completely slides into the inside of the steel column, the spring I at this time will push and reset the sliding plate, and then the trapezoidal plate is reset and clamped in the inside of the steel column, so that the preliminary limiting of the steel column and the steel beam is completed, and the installation support is provided without searching for tools, and the installation efficiency is improved.

[0032] 2. In the utility model, the opening plate is pushed to slide and stretch the spring II, at this time the spring II will store elastic potential energy, and then the opening plate and the rotating plate give the concave plate a force in the opposite direction, and resist the connecting plate, so that the stress generated by high temperature deformation can be offset, and the stability is improved, and the service life is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 A perspective view of a fireproof large-space steel structure is provided for the utility model;

[0034] Figure 2 A structure diagram of a right-angle plate of a fireproof large-space steel structure is provided for the utility model;

[0035] Figure 3 For Figure 2 An enlarged view of A in the middle;

[0036] Figure 4 A structure diagram of a positioning column of a fireproof large-space steel structure is provided for the utility model;

[0037] Figure 5 A structure diagram of a guide shaft of a fireproof large-space steel structure is provided for the utility model.

[0038] LEGEND:

[0039] 1, steel column; 2, support frame; 3, fixing mechanism; 31, right-angle plate; 32, screw; 4, steel beam; 5, support mechanism; 51, connecting plate; 52, positioning column; 53, spring I; 54, sliding plate; 55, trapezoidal plate; 56, cavity; 57, reset assembly; 5701, elastic block; 5702, arc-shaped groove; 5703, elastic piece; 6, absorption mechanism; 61, vertical plate; 62, side plate; 63, guide shaft; 64, opening plate; 65, rotating plate; 66, concave plate; 67, spring II. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present utility model.

[0041] With reference to Figures 1 to 3 The utility model provides an embodiment: a kind of large space steel structure of fire prevention, including steel column 1, steel column 1 is made of molybdenum-containing fire-resistant steel, can improve the high temperature strength and anti creep performance of steel column 1, the outside of steel column 1 is slidably connected with support frame 2, by the restriction of steel column 1, it enables support frame 2 to be stable sliding, two fixed mechanisms 3 are installed in the periphery of support frame 2, and the fixed mechanism 3 is used to enhance the connecting strength between support frame 2 and steel column 1, the inside of the periphery of support frame 2 is slidably connected with steel beam 4, by the restriction of support frame 2, it enables steel beam 4 to be stable sliding, and with steel column 1 uses same material quality, multiple fixed mechanisms 3 include right angle plate 31, right angle plate 31 is designed with right angle, can better fit the connecting surface of support frame 2 and steel column 1, the outside of multiple right angle plates 31 is slidably connected in the four sides of support frame 2, by support frame 2 and right angle plate 31 fit sliding, it is convenient to adjust position, the inside of right angle plate 31 is screw connected with multiple screws 32, and screw 32 is used to fixed right angle plate 31 on support frame 2 and steel column 1, wherein two screws 32 are screwed in the inside of steel column 1 and pass through support frame 2, by screw 32 and fixed right angle plate 31 with steel column 1, ensure that connection is stable, and the other two screws 32 are bolted in the inside of steel beam 4 and pass through support frame 2, by screw 32 and fixed right angle plate 31 with steel beam 4, enhance the stability of overall structure, the similar side of multiple steel beams 4 is fixedly connected with support mechanism 5, and support mechanism 5 is used to assist support steel beam 4, to facilitate installation;

[0042] Specifically, steel column 1 is made of molybdenum-containing fire-resistant steel, which improves the high temperature strength and anti creep performance, support frame 2 is slidably connected outside steel column 1, and stable sliding is realized by the restriction of steel column 1, fixed mechanism 3 is installed around support frame 2, which is used to enhance the connecting strength with steel column 1, and steel beam 4 is slidably connected inside support frame 2, to ensure the stable sliding of steel beam 4, fixed mechanism 3 includes right angle plate 31 and screw 32, right angle plate 31 fits support frame 2 and steel column 1, and right angle plate 31 is fixed on steel column 1 and steel beam 4 by screw 32, to ensure the stability of overall structure, in addition, support mechanism 5 is arranged between steel beams 4, to assist support steel beam 4, facilitating installation, and the overall design enhances the stability and fireproof performance of the structure.

[0043] With reference to Figures 2 to 4The plurality of supporting mechanisms 5 each comprise a connecting plate 51 made of the same material as the steel column 1, the distal sides of the plurality of connecting plates 51 are fixedly connected to the proximal sides of the plurality of steel beams 4, the connecting plate 51 is connected to the steel beam 4 by welding process, thereby providing stable support for the connecting plate 51, the upper and lower ends of the connecting plate 51 are fixedly connected with positioning columns 52, which are fixed by welding process, thereby providing stable support for the positioning columns 52, the positioning columns 52 are externally sleeved with springs 53, which are uniformly stressed by limiting the springs 53, the external sides of the two positioning columns 52 are slidably connected with two sliding plates 54, which are stably up and down slidably limited by the positioning columns 52, the proximal sides of the two sliding plates 54 are fixedly connected to the distal ends of the two springs 53, the sliding plate 54 can compress the spring 53 when stressed, so that the spring 53 can store elastic potential energy, and then give the sliding plate 54 a force in the opposite direction to reset, the external sides of the two sliding plates 54 are slidably connected in the internal sides of the connecting plate 51, which are stably slidably limited by the connecting plate 51;

[0044] The distal sides of the two sliding plates 54 are fixedly connected with trapezoidal plates 55, which can better engage with the internal sides of the steel column 1, the external sides of the plurality of trapezoidal plates 55 are slidably connected in the internal sides of the steel column 1, which are slidably connected to the steel column 1 after being resisted by the trapezoidal plate 55, the trapezoidal plate 55 is adhered to the steel column 1 after being slid to the internal side of the steel column 1, the external sides of the two trapezoidal plates 55 are slidably connected in the internal sides of the connecting plate 51, which are stably slidably limited by the connecting plate 51, the internal sides of the connecting plate 51 are provided with cavities 56, which provide space for the sliding of the sliding plates 54 and the trapezoidal plates 55, the proximal sides of the two sliding plates 54 are fixedly connected with reset assemblies 57, which are used to further provide a resetting force, the reset assemblies 57 each comprise an elastic block 5701 made of elastic rubber, which can be deformed and restored to its original shape when stressed, the external sides of the two elastic blocks 5701 are slidably connected in the internal sides of the connecting plate 51, which are stably slidably limited by the connecting plate 51;

[0045] The outer part of the plurality of connecting plates 51 is slidingly connected in the inner part of the steel column 1, the connecting plates 51 are guided by the inner part of the steel column 1, so that the connecting plates 51 can stably slide, one of the arc-shaped grooves 5702 is arranged in the inner part of one of the elastic blocks 5701, so that the inner part of one of the elastic blocks 5701 provides a space for movement, the far side of the two elastic blocks 5701 is fixedly connected to the close side of the two sliding plates 54 respectively, the sliding plates 54 drive the elastic blocks 5701 to slide synchronously in the process of sliding, the other two arc-shaped grooves 5702 are arranged in the inner part of the other elastic block 5701, the arc-shaped grooves 5702 provide a space for movement in the inner part of the elastic member 5703, the outer part of one of the elastic blocks 5701 is fixedly connected with two of the elastic members 5703, the elastic members 5703 are used to provide clamping force, the outer part of the other elastic block 5701 is fixedly connected with the other elastic member 5703, the other elastic block 5701 drives the elastic member 5703 to slide synchronously, the outer part of the elastic member 5703 is slidingly connected in the inner part of the arc-shaped groove 5702, the elastic member 5703 slides through the arc-shaped groove 5702, and the stability during resetting is ensured, and the inner wall of the steel column 1 is fixedly connected with the absorption mechanism 6, and the absorption mechanism 6 is used to absorb stress during deformation;

[0046] Specifically, the connecting plate 51 is made of the same material as the steel column 1, is fixed on the steel beam 4 by welding, provides stable support, the connecting plate 51 is fixed with the positioning column 52 at the upper and lower ends, is externally sleeved with the spring one 53, is used to uniformly bear stress, the sliding plate 54 is slidingly connected outside the positioning column 52 and is elastically reset through the spring one 53, the sliding plate 54 is fixed with the trapezoidal plate 55 outside, is slidingly connected in the inner part of the steel column 1, is combined with the steel column 1 after sliding to enhance stability, the inner part of the connecting plate 51 is provided with the cavity 56, and the sliding space is provided for the sliding plate 54 and the trapezoidal plate 55, the reset assembly 57 comprises the elastic block 5701 and the elastic member 5703, the elastic block 5701 is made of elastic rubber, slides through the arc-shaped groove 5702, provides a resetting force and ensures sliding stability, the inner wall of the steel column 1 is provided with the absorption mechanism 6, and the absorption mechanism 6 is used to absorb stress during deformation, the overall design is elastically reset and slidingly connected, and the stability and deformation resistance of the structure are enhanced.

[0047] Referring to Figure 1 , Figure 2 and Figure 5The absorbing mechanism 6 comprises a vertical plate 61 made of the same material as the steel column 1, which is fixedly connected to the inner wall of the steel column 1 by welding, thereby providing stable support for the vertical plate 61, and two side plates 62 fixedly connected to the four sides of the vertical plate 61 by welding, thereby providing stable support for the side plates 62, a guide shaft 63 fixedly connected to the side of the two side plates 62 by welding, thereby providing stable support for the guide shaft 63, a spring 67 sleeved outside the guide shaft 63, which is limited to uniformly bear stress, two opening plates 64 slidingly connected to the outside of the guide shaft 63, which are stably and downwardly slid under the limitation of the guide shaft 63, a rotating plate 65 rotatably connected to the inside of the opening plate 64, which is pushed to slide by the rotating plate 65, a concave plate 66 rotatably connected to the end of the two rotating plates 65 away from the vertical plate 61, which pushes the two rotating plates 65 connected to rotate, and the two opening plates 64 are fixedly connected to the upper and lower ends of the spring 67, respectively, which can stretch the spring 67 in the sliding process to store elastic potential energy, thereby providing a reverse force to reset the opening plate 64, and the side of the concave plate 66 is in contact with the side of the connecting plate 51, which can absorb the gravitational force when deformed.

[0048] Specifically, the vertical plate 61 is made of the same material as the steel column 1 and is fixedly connected to the inner wall of the steel column 1 by welding to provide stable support, the side plates 62 are fixedly connected to the four sides of the vertical plate 61, the guide shaft 63 is connected between the side plates 62, the spring 67 is sleeved outside the guide shaft 63 to uniformly bear stress, the opening plate 64 is slidingly connected to the outside of the guide shaft 63 and rotatably connected to the rotating plate 65 inside, the rotating plate 65 pushes the opening plate 64 to slide, the concave plate 66 is rotatably connected to the end of the rotating plate 65 away from the vertical plate 61, the concave plate 66 pushes the rotating plate 65 to rotate, the opening plate 64 stretches the spring 67 in the sliding process to store elastic potential energy and provide a reset force, and the concave plate 66 is in contact with the connecting plate 51 to absorb stress when deformed.

[0049] Working principle: when the steel column 1 and the steel beam 4 need to be assembled, the support frame 2 is sleeved outside the steel column 1, the right angle plate 31 is attached to the right angle surface of the steel beam 4 and the steel column 1, then the four screws 32 are divided into two pairs, respectively penetrating the support frame 2 and the steel column 1 to be connected, and the steel beam 4 to be connected, so that the fixing can be completed, and when installing, the steel beam 4 is pushed into the inside of the support frame 2, the connecting plate 51 is abutted against the steel column 1 and slides, then the steel column 1 abuts against the trapezoidal plate 55, so that the two trapezoidal plates 55 on the connecting plate 51 slide to the same side, so as to push the sliding plate 54 to slide and extrude the spring one 53, so that the spring one 53 can store elastic potential energy, and then the trapezoidal plate 55 is reset by the sliding plate 54 giving an opposite force, and in the process of sliding of the sliding plate 54, the elastic block 5701 is also driven to slide, at this time, the corresponding two elastic blocks 5701 drive an elastic piece 5703 and two elastic pieces 5703 to slide, until the two elastic blocks 5701 can be attached, at this time, the elastic piece 5703 abuts against the elastic block 5701, when the connecting plate 51 is completely slid into the inside of the steel column 1, the spring one 53 is pushed at this time, so as to reset the sliding plate 54 to slide, and then reset the trapezoidal plate 55 to slide and be clamped in the inside of the steel column 1, so as to complete the preliminary limiting of the steel column 1 and the steel beam 4, without the need to find tools for installation to provide support, thereby improving the installation efficiency.

[0050] When a fire occurs, the stress of the steel beam 4 on the same side is abutted against the concave plate 66, the concave plate 66 pushes the rotating plate 65 to rotate, the opening plate 64 is pushed to slide and stretch the spring two 67, the spring two 67 stores elastic potential energy, and then the concave plate 66 is given an opposite force by the opening plate 64 and the rotating plate 65, and abuts against the connecting plate 51, so that the stress generated by the high temperature deformation can be offset, thereby improving the stability and prolonging the service life.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A fireproof large space steel structure comprising steel columns (1), characterized in that: The outer side of the steel column (1) is slidably connected with a support frame (2), two fixing mechanisms (3) are mounted on the four sides of the support frame (2), the inner side of the four sides of the support frame (2) is slidably connected with a steel beam (4), the side of the steel beam (4) is fixedly connected with a support mechanism (5), and the inner wall of the steel column (1) is fixedly connected with an absorbing mechanism (6). The support mechanism (5) comprises a connecting plate (51), the side of the connecting plate (51) is fixedly connected with the side of the steel beam (4), the upper and lower ends of the connecting plate (51) are fixedly connected with a positioning column (52), the outer side of the positioning column (52) is sleeved with a spring (53), the outer side of the positioning column (52) is slidably connected with a sliding plate (54), the side of the sliding plate (54) is fixedly connected with a trapezoidal plate (55), the inner side of the connecting plate (51) is provided with a cavity (56), and the side of the sliding plate (54) is fixedly connected with a reset assembly (57).

2. The fire resistant large space steel structure according to claim 1, characterized in that: The reset assembly (57) comprises an elastic block (5701), the side of the elastic block (5701) is fixedly connected with the side of the sliding plate (54), one end of the elastic block (5701) is fixedly connected with an elastic element (5703), and the other end of the elastic block (5701) is fixedly connected with another elastic element (5703).

3. A fire resistant large space steel structure according to claim 2, characterized in that: The inner side of the elastic block (5701) is provided with an arc-shaped groove (5702), the inner side of the elastic block (5701) is provided with another arc-shaped groove (5702), and the outer side of the elastic element (5703) is slidably connected in the arc-shaped groove (5702).

4. The fire resistant large space steel structure according to claim 1, wherein: The absorbing mechanism (6) comprises a vertical plate (61), the outer side of the vertical plate (61) is fixedly connected with the inner wall of the steel column (1), the four sides of the vertical plate (61) are fixedly connected with two side plates (62), the side of the side plate (62) is fixedly connected with a guide shaft (63), the outer side of the guide shaft (63) is sleeved with a spring (67), the outer side of the guide shaft (63) is slidably connected with two opening plates (64), the inner side of the opening plate (64) is rotatably connected with a rotating plate (65), and the end, away from the vertical plate (61), of the rotating plate (65) is rotatably connected with a concave plate (66).

5. The fire resistant large space steel structure according to claim 1, wherein: The outer side of the trapezoidal plate (55) is slidably connected in the inner side of the connecting plate (51), and the outer side of the sliding plate (54) is slidably connected in the inner side of the connecting plate (51).

6. The fire resistant large space steel structure according to claim 2, wherein: Two sides of the two sliding plates (54) are fixedly connected with two far ends of the two spring (53) respectively, the two elastic blocks (5701) are slidably connected with the inside of the connecting plate (51) respectively, the outside of the multiple connecting plates (51) are slidably connected with the inside of the steel column (1), and the outside of the multiple trapezoidal plates (55) are slidably connected with the inside of the steel column (1).

7. The fire resistant large space steel structure according to claim 1, wherein: The multiple fixing mechanisms (3) each comprise a right-angle plate (31), the outside of the multiple right-angle plates (31) is slidably connected with four sides of the support frame (2) respectively, the inside of the right-angle plate (31) is screw-connected with multiple screws (32), two of the screws (32) are screw-connected with the inside of the steel column (1) through the support frame (2), and the other two screws (32) are bolt-connected with the inside of the steel beam (4) through the support frame (2).

8. A fire resistant large space steel structure according to claim 4, characterized in that: The far sides of the multiple concave plates (66) are in contact with the near sides of the multiple connecting plates (51) respectively, and the near ends of the two opening plates (64) are fixedly connected with the upper and lower ends of the second spring (67) respectively.

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