A connecting structure of fabricated steel structure building

Abstract

The utility model discloses a kind of assembled steel structure building connecting structure, it is related to building technical field, including stand and crossbeam, the stand is equipped with friction type damper, cross block is equipped on the friction type damper, the one end of crossbeam is equipped with connecting block, first connecting groove is opened in the connecting block, cross block is engaged in first connecting groove, and cross block is connected with connecting block by engagement mechanism;L-shaped support frame is installed on the crossbeam, limit block is equipped on the L-shaped support frame, limit slot is opened in the stand, and limit block is engaged in limit slot;The utility model is equipped with friction type damper at the connecting node of stand and crossbeam, and the engagement of L-shaped support frame on crossbeam and stand limit slot is limited, vertical direction support and plane outer constraint to crossbeam are formed, and the horizontal energy dissipation function of friction type damper is complementary.

Description

Technical Field

[0001] This utility model relates to the field of building technology, specifically to a connection structure for prefabricated steel structure buildings. Background Technology

[0002] In prefabricated steel structure buildings, the connection structure is the core link to ensure the integrity, stability and safety of the building. Its design must take into account mechanical performance, construction efficiency and durability.

[0003] Referring to the existing Chinese patent with publication number CN221422226U, a prefabricated building beam-column steel structure connection structure is disclosed, including a column, a crossbeam is provided on one side of the column, a connecting component is provided at one end of the crossbeam, and a support component for reinforcing the crossbeam is provided at the bottom end of the crossbeam.

[0004] The aforementioned prefabricated steel beam-column connection structure utilizes a design of columns, beams, support components, quick-release parts, and connecting components. By inserting a plug-in block into the column and then inserting fixing bolts into the circular slots of the plug-in block to restrict its movement, a connecting block on one side of the mounting plate is inserted into the beam. The locking blocks on both sides of the connecting block insert into second rectangular holes, achieving a stable connection between the column and beam. The connection between the column and beam requires no welding. When disassembly is needed, only the connecting components need to be disassembled to separate the column and beam, avoiding destructive disassembly and facilitating the reuse of the columns and beams. However, this prefabricated steel beam-column connection structure still has some drawbacks, such as potential stress concentration at connection nodes, especially at weld transitions or around bolt holes. Under dynamic loads such as earthquakes and wind loads, it is prone to fatigue failure or brittle fracture, affecting the structure's safety and durability. Utility Model Content

[0005] The purpose of this utility model is to provide a prefabricated steel structure building connection structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A prefabricated steel structure building connection structure, comprising:

[0008] The column and the crossbeam are provided. The column is equipped with a friction damper and a cross block. One end of the crossbeam is provided with a connecting block and a first connecting groove is provided on the connecting block. The cross block is engaged in the first connecting groove and the cross block and the connecting block are connected by a engaging mechanism.

[0009] An L-shaped support frame is installed on the crossbeam, and a limiting block is provided on the L-shaped support frame. A limiting groove is opened on the column, and the limiting block is engaged in the limiting groove.

[0010] Preferably, the column has a groove, and the friction damper is installed in the groove by mounting bolts.

[0011] Preferably, the L-shaped support frame is connected to the crossbeam by fixing bolts, and the L-shaped support frame is provided with a reinforcing plate.

[0012] Preferably, the engaging mechanism includes a cross-shaped plate, a fixing block, and an engaging assembly. The fixing block is fixedly connected to the connecting block. A first engaging groove is provided on the cross-shaped block, and a second connecting groove is provided on the connecting block. The cross-shaped plate passes through the second connecting groove and engages in the first engaging groove.

[0013] Preferably, the engaging assembly includes an engaging plate, a lever plate, and a return spring. The fixing block has an installation groove, one end of the return spring is installed in the installation groove, and the other end of the return spring is connected to the engaging plate. The C-shaped plate has a second engaging groove, and the other end of the engaging plate engages in the second engaging groove. A through groove is provided on one side of the installation groove, and the lever plate is connected to one end of the engaging plate and passes through the through groove.

[0014] Preferably, a first fiber Bragg grating stress sensor is installed on the L-shaped support frame, a second fiber Bragg grating stress sensor is installed on the cross block, and an audible and visual alarm is installed on the connecting block.

[0015] Preferably, a PLC controller is installed on the connecting block, and the PLC controller is electrically connected to the audible and visual alarm, the first fiber optic stress sensor, and the second fiber optic stress sensor.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model incorporates a friction damper at the connection node between the column and the beam, utilizing the engagement mechanism of the cross block and the connecting block to form an "energy-dissipating-limiting" composite connection. Compared to rigid connections relying on bolts or plugs in existing technologies, when the structure is subjected to dynamic loads such as earthquakes and wind loads, the friction plates of the friction damper can dissipate energy through sliding, preventing stress concentration at the bolt holes or welds of the connection node, and improving the ductility and durability of the node under dynamic loads.

[0018] 2. The L-shaped support frame on the crossbeam of this utility model forms vertical support and out-of-plane constraint for the crossbeam through the engagement of the limiting block and the column limiting groove, complementing the horizontal energy dissipation function of the friction damper. In existing technologies, single-point connections using only plug-in blocks and bolts easily lead to moment concentration at the connection point. This solution, however, uses a dual structure of "horizontal energy dissipation by the damper + vertical support by the L-shaped frame" to distribute the stress at the node to multiple contact areas between the column and the crossbeam. Horizontal seismic forces are dissipated by the friction damper through sliding, avoiding stress concentration at the weld transition point in traditional connections. This multi-directional force dispersion design allows for a more uniform stress distribution in the node area, significantly improving the fatigue resistance and overall safety of the connection structure compared to existing technologies. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of a prefabricated steel structure building connection structure in an embodiment of this application;

[0020] Figure 2 This is an exploded structural diagram of a prefabricated steel structure building connection structure according to an embodiment of this application;

[0021] Figure 3 This is a cross-sectional view of a connecting block in a prefabricated steel structure building connection structure according to an embodiment of this application.

[0022] Figure 4 This is a cross-sectional schematic diagram of a prefabricated steel structure building connection structure in an embodiment of this application.

[0023] In the diagram: 1. Column; 2. Horizontal beam; 3. Friction damper; 4. Cross block; 5. Connecting block; 6. First connecting groove; 7. L-shaped support frame; 8. Limiting block; 9. Limiting groove; 10. Groove; 11. Mounting bolt; 12. Fixing bolt; 13. Reinforcing plate; 14. C-shaped plate; 15. Fixing block; 16. First engaging groove; 17. Second connecting groove; 18. Engaging plate; 19. Pulley; 20. Return spring; 21. Mounting groove; 22. Second engaging groove; 23. Through groove; 24. First fiber optic grating stress sensor; 25. Second fiber optic grating stress sensor; 26. PLC controller; 27. Audible and visual alarm. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-4 This utility model provides a technical solution:

[0026] A prefabricated steel structure building connection structure, comprising:

[0027] The column 1 and the crossbeam 2 are provided. A friction damper 3 is installed on the column 1. A groove 10 is provided on the column 1. The friction damper 3 is installed in the groove 10 by mounting bolts 11. A cross block 4 is provided on the friction damper 3. A connecting block 5 is provided at one end of the crossbeam 2. A first connecting groove 6 is provided on the connecting block 5. The cross block 4 is engaged in the first connecting groove 6. The cross block 4 and the connecting block 5 are connected by an engaging mechanism.

[0028] Specifically, the engaging mechanism includes an inverted plate 14, a fixing block 15, and an engaging assembly. The fixing block 15 is fixedly connected to the connecting block 5. A first engaging groove 16 is provided on the cross block 4, and a second connecting groove 17 is provided on the connecting block 5. The inverted plate 14 passes through the second connecting groove 17 and engages within the first engaging groove 16. The engaging assembly includes an engaging plate 18, a lever plate 19, and a return spring 20. A mounting groove 21 is provided on the fixing block 15, and one end of the return spring 20 is installed within the mounting groove 21. The other end of the reset spring 20 is connected to the locking plate 18. A second locking groove 22 is provided on the C-shaped plate 14. The other end of the locking plate 18 is locked in the second locking groove 22. A through groove 23 is provided on one side of the mounting groove 21. The lever 19 is connected to one end of the locking plate 18 and passes through the through groove 23. A first fiber optic stress sensor 24 is installed on the L-shaped support frame 7. A second fiber optic stress sensor 25 is installed on the cross block 4. An audible and visual alarm 27 is installed on the connecting block 5.

[0029] When connecting column 1 and crossbeam 2, the cross block 4 is engaged into the first connecting groove 6 of connecting block 5 to complete the initial positioning and splicing of the basic components; the C-shaped plate 14 is inserted through the second connecting groove 17 of connecting block 5 and engaged into the first engaging groove 16 of cross block 4; a return spring 20 is installed in the mounting groove 21 of fixing block 15, one end of the return spring 20 is fixed in the mounting groove 21, and the other end is connected to the engaging plate 18; the other end of the engaging plate 18 is engaged into the second engaging groove 22 of C-shaped plate 14, so that the lever 19 is connected to one end of the engaging plate 18, and the lever 19 passes through the through groove 23 on one side of the mounting groove 21 to complete the installation of the engaging mechanism and achieve a stable engaging connection between cross block 4 and connecting block 5; the L-shaped support frame 7 is connected and fixed to crossbeam 2 by fixing bolts 12.

[0030] The first fiber optic stress sensor 24 and the second fiber optic stress sensor 25 monitor the stress changes borne by the L-shaped support frame 7 and the cross block 4 in real time. When the structure is subjected to external force and the stress changes, the sensor converts the stress change into a change in optical signal. The sensor transmits the optical signal to the PLC controller 26 on the connecting block 5. The PLC controller 26 analyzes and processes the received signal, converts the optical signal into a corresponding electrical signal, and compares it with a preset stress threshold. If the PLC controller 26 determines that the current stress exceeds the preset threshold, it indicates that there may be a safety hazard in the structure. At this time, the PLC controller 26 sends a command to the audible and visual alarm 27 to trigger the audible and visual alarm 27 to sound an alarm and remind relevant personnel to take timely measures to avoid safety accidents.

[0031] An L-shaped support frame 7 is installed on the crossbeam 2. The L-shaped support frame 7 is connected to the crossbeam 2 by fixing bolts 12. A reinforcing plate 13 is provided on the L-shaped support frame 7. A limiting block 8 is provided on the L-shaped support frame 7. A limiting groove 9 is opened on the column 1. The limiting block 8 is engaged in the limiting groove 9.

[0032] Before installing the column 1 and the crossbeam 2, use fixing bolts 12 to connect the L-shaped plate to the crossbeam 2. When the column 1 and the crossbeam 2 are connected, the limiting block 8 is engaged in the limiting groove 9, forming vertical support and out-of-plane constraint for the crossbeam 2.

[0033] In the above embodiment, a PLC controller 26 is installed on the connecting block 5. The PLC controller 26 is electrically connected to the audible and visual alarm 27, the first fiber optic stress sensor 24, and the second fiber optic stress sensor 25.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prefabricated steel structure building connection structure, characterized in that, include: A column (1) and a crossbeam (2) are provided. A friction damper (3) is installed on the column (1). A cross block (4) is provided on the friction damper (3). A connecting block (5) is provided at one end of the crossbeam (2). A first connecting groove (6) is provided on the connecting block (5). The cross block (4) is engaged in the first connecting groove (6). The cross block (4) and the connecting block (5) are connected by a engaging mechanism. An L-shaped support frame (7) is installed on the crossbeam (2), and a limiting block (8) is provided on the L-shaped support frame (7). A limiting groove (9) is opened on the column (1), and the limiting block (8) is engaged in the limiting groove (9).

2. The prefabricated steel structure building connection structure according to claim 1, characterized in that: The column (1) has a groove (10) and the friction damper (3) is installed in the groove (10) by mounting bolts (11).

3. The prefabricated steel structure building connection structure according to claim 1, characterized in that: The L-shaped support frame (7) is connected to the crossbeam (2) by fixing bolts (12), and the L-shaped support frame (7) is provided with a reinforcing plate (13).

4. The prefabricated steel structure building connection structure according to claim 1, characterized in that: The engaging mechanism includes an inverted plate (14), a fixing block (15), and engaging components. The fixing block (15) is fixedly connected to the connecting block (5). A first engaging groove (16) is provided on the cross block (4), and a second connecting groove (17) is provided on the connecting block (5). The inverted plate (14) passes through the second connecting groove (17) and engages in the first engaging groove (16).

5. A prefabricated steel structure building connection structure according to claim 4, characterized in that: The engaging assembly includes an engaging plate (18), a lever (19), and a return spring (20). The fixing block (15) has an installation groove (21). One end of the return spring (20) is installed in the installation groove (21), and the other end of the return spring (20) is connected to the engaging plate (18). The U-shaped plate (14) has a second engaging groove (22), and the other end of the engaging plate (18) engages in the second engaging groove (22). A through groove (23) is provided on one side of the installation groove (21). The lever (19) is connected to one end of the engaging plate (18), and the lever (19) passes through the through groove (23).

6. The prefabricated steel structure building connection structure according to claim 1, characterized in that: A first fiber Bragg grating stress sensor (24) is installed on the L-shaped support frame (7), a second fiber Bragg grating stress sensor (25) is installed on the cross block (4), and an audible and visual alarm (27) is installed on the connecting block (5).

7. A prefabricated steel structure building connection structure according to claim 6, characterized in that: A PLC controller (26) is installed on the connecting block (5), and the PLC controller (26) is electrically connected to the audible and visual alarm (27), the first fiber optic stress sensor (24), and the second fiber optic stress sensor (25).

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