Fabricated steel structure for civil engineering

Abstract

The invention discloses a fabricated steel structure for civil engineering, and relates to the technical field of civil engineering construction. Comprising a connecting piece and a steel beam piece, a connecting inserting opening is formed in the connecting piece, a connecting inserting rod is fixedly installed on the steel beam piece, a positioning assembly is arranged on the connecting piece and the steel beam piece, a main inserting rod and an auxiliary inserting rod are arranged on the positioning assembly, and a main inserting hole is formed in the steel beam piece. Auxiliary insertion holes are formed in the connecting piece and the connecting insertion rod; an auxiliary assembly is arranged on the connecting piece, an auxiliary inserting rod is arranged on the auxiliary assembly, an auxiliary inserting hole is formed in the connecting inserting rod, and an auxiliary groove is formed in the connecting inserting rod. Through cooperative use of the positioning assembly and the auxiliary assembly, the connecting firmness between the steel beam piece and the connecting piece is effectively enhanced, meanwhile, the anti-shearing force capacity, the anti-vibration capacity and the anti-drawing capacity are improved, disassembly can be convenient, and the using effect of the assembly type steel structure is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of civil engineering construction technology, in particular to a prefabricated steel structure for civil engineering. BACKGROUND

[0002] Steel structure is a natural prefabricated structure, but not all steel structure buildings are prefabricated buildings. The prefabricated structure must be harmonious and unified in steel structure, enclosure system, equipment and pipeline system, and interior system, so as to be a prefabricated steel structure building.

[0003] In the prior art, a prefabricated steel structure building structure for civil engineering is disclosed in Chinese patent No. "CN220377510U". A connecting sleeve with a rubber sleeve is arranged outside two steel beam parts, a threaded sleeve is hinged between the two connecting sleeves, and a two-way screw rod with a knob is shared between the threaded sleeves. By rotating the two-way screw rod, the threaded sleeves can move towards each other, so that the connecting sleeve slides a certain distance outside the steel beam part until the two-way screw rod cannot rotate. In this way, the two steel beam parts form a triangle through the connecting part and the threaded sleeve and the two-way screw rod, thereby increasing the stability between the two steel beam parts and solving the problem of insufficient stability between the existing prefabricated steel structures.

[0004] In the existing prefabricated steel structure, the connection between the steel beam part and the connecting part usually relies on a single locking mechanism or fixing method, which is easily affected by external forces (such as shear force, pulling force, vibration, etc.), resulting in insufficient connection firmness. In addition, some prefabricated steel structures have a relatively complicated disassembly process for the connecting structure, especially in scenarios requiring quick disassembly, which usually requires the use of complex tools or takes a long time. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a prefabricated steel structure for civil engineering, which solves the problems mentioned in the background art.

[0006] To achieve the above purpose, the present application is realized by the following technical scheme: A prefabricated steel structure for civil engineering, comprising a connecting part and a steel beam part, a connecting socket is formed on the connecting part, a connecting plug rod is fixedly installed on the steel beam part, a positioning assembly is arranged on the connecting part and the steel beam part, a main plug rod and a secondary plug rod are arranged on the positioning assembly, a main plug hole is formed on the steel beam part, and a secondary plug hole is formed on the connecting part and the connecting plug rod. An auxiliary assembly is arranged on the connecting part, an auxiliary plug rod is arranged on the auxiliary assembly, an auxiliary plug hole is formed on the connecting plug rod, and an auxiliary slot is formed on the connecting plug rod.

[0007] Preferably, the positioning assembly includes an adjusting ring rotatably mounted on the connector, an adjusting screw movably mounted on the adjusting ring, a bearing fixedly mounted at one end of the adjusting screw, an adjusting block fixedly mounted on the bearing, an mounting block fixedly mounted on the adjusting block, a connecting rod fixedly mounted on the side end face of the mounting block, a fitting plate fixedly mounted at the end of the connecting rod away from the mounting block, and a positioning slide rod fixedly mounted on the adjusting block.

[0008] Preferably, one end of the adjusting screw extends to the inner side of the connector, and the other end of the adjusting screw extends to the other side of the connector. The main insert rod and the auxiliary insert rod are both fixedly installed on the bonding plate. The main insert rod is embedded in the main insertion hole, and the auxiliary insert rod is embedded in the auxiliary insertion hole. The end of the positioning slide rod away from the adjusting block extends to one side of the connector, and the positioning slide rod is slidably installed with the connector.

[0009] Preferably, the auxiliary component includes a mounting rod fixedly mounted on the adjusting block, a pressing rod fixedly mounted on the mounting rod, a reset rod rotatably mounted on the connector, a mounting ring fixedly mounted on the reset rod, and a torsion spring fixedly connected to the mounting ring.

[0010] Preferably, the connector has a reset groove inside, a V-shaped bracket is fixedly installed at the end of the reset rod, a pressing groove is provided on the V-shaped bracket, and a U-shaped bracket is fixedly installed at the end of the V-shaped bracket.

[0011] Preferably, the mounting ring is located inside the reset groove, the end of the torsion spring away from the mounting ring is fixedly connected inside the reset groove, the pressing groove is located directly below the pressing rod, the pressing rod slides in contact with the pressing groove, the auxiliary insert is fixedly mounted on the U-shaped frame rod, and the auxiliary insert passes through the auxiliary insertion hole and is embedded in the auxiliary groove.

[0012] Preferably, an L-shaped bracket is fixedly installed on the side end face of the connector, an arc-shaped plate is fixedly installed on the L-shaped bracket, an inclined arc groove is opened on the inner side of the arc-shaped plate, an L-shaped plate is fixedly installed on the V-shaped bracket, and a sliding rod is slidably installed on the L-shaped plate.

[0013] Preferably, a contact protrusion is fixedly installed at one end of the sliding rod, a fastening block is fixedly installed at the other end of the sliding rod, a limit ring is fixedly installed on the sliding rod, and a spring is fixedly connected to the limit ring.

[0014] Preferably, the two ends of the sliding rod are located on both sides of the U-shaped frame rod, the fastening block is located on the inner side of the L-shaped plate, and the contact protrusion is located inside the inclined arc groove. The inside of the inclined arc groove is an inclined surface. When the contact protrusion slides in the inclined arc groove, the fastening block moves inward by utilizing the inclined surface inside the inclined arc groove.

[0015] This invention provides a prefabricated steel structure for civil engineering. Compared with the prior art, it has the following advantages: 1. In this invention, the connecting rod on the steel beam is inserted into the connecting socket of the connector. Then, the adjusting ring on the connector is rotated. By utilizing the cooperation between the adjusting ring and the adjusting screw, the adjusting screw and the bearing, and the bearing and the adjusting block, the mounting block on the adjusting block will drive the bonding plate on the connecting frame rod to move inward to the connector. Then, through the limiting sliding between the positioning slide rod and the connector, the bonding plate will be bonded to the connector and the steel beam. The main rod on the bonding plate will be inserted into the main socket, and the auxiliary rod will pass through the auxiliary socket on the connector and be inserted into the auxiliary socket of the connecting rod. By utilizing the cooperation between the main rod and the main socket and the auxiliary rod and the auxiliary socket, a double locking is formed, which enhances the shear resistance and effectively ensures the firmness between the steel beam and the connector. At the same time, it is also extremely convenient to disassemble them. 2. In this invention, when the adjusting block moves, it will drive the lowering rod to move synchronously. Through the cooperation of the lowering rod and the reset groove on the V-shaped frame rod, the V-shaped frame rod will rotate around the reset rod. The U-shaped frame rod on the U-shaped frame rod will drive the auxiliary insert rod to pass through the auxiliary insertion hole and embed in the auxiliary groove, forming an additional mechanical interlock, which significantly improves the vibration resistance and tensile strength between the connecting parts and the steel beam parts, and further improves the fastening of the connecting parts and the steel beam parts. When the V-shaped frame rod is not pressed down by the lowering rod, the V-shaped frame rod will return to its original position through the reaction force of the torsion spring on the reset rod. At the same time, the auxiliary insert rod on the U-shaped frame rod will fall out from the auxiliary groove and the auxiliary insertion hole, releasing the auxiliary lock, thereby facilitating quick disassembly. 3. In this invention, when the U-shaped frame rod rotates synchronously with the V-shaped frame rod, the L-shaped plate on the V-shaped frame rod will be on the outside of the bonding plate. When the contact protrusion on the sliding rod slides in the inclined arc groove, the fastening block on the sliding rod moves inward using the inclined surface in the inclined arc groove. When the U-shaped frame rod rotates to the final position with the V-shaped frame rod, the contact protrusion on the sliding rod will use the pressure of the inclined surface to make the fastening block on the sliding rod fit against the side end of the bonding plate. The additional lateral pressure enhances the firmness between the bonding plate and the connector, effectively enhancing the embedding of the main insertion rod and the main insertion hole, as well as the embedding of the secondary insertion rod and the secondary insertion hole, further enhancing the firmness between the connector and the steel beam.

[0016] 4. This invention, through the combined use of positioning components and auxiliary components, effectively enhances the connection strength between steel beams and connectors, while improving shear resistance, vibration resistance, and pull-out resistance. It also facilitates disassembly, greatly improving the performance of the prefabricated steel structure. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the connecting rod structure in this invention; Figure 5 This is a schematic diagram of the main socket and the auxiliary socket in this invention; Figure 6 This is a partial structural diagram of the positioning component in this invention; Figure 7 This is a schematic diagram of the auxiliary component in this invention; Figure 8 This is a cross-sectional view of the L-shaped plate in this invention.

[0018] In the diagram: 1. Connector; 2. Steel beam; 3. Connecting socket; 4. Connecting rod; 5. Main rod; 6. Secondary rod; 7. Main hole; 8. Secondary hole; 9. Auxiliary rod; 10. Auxiliary hole; 11. Auxiliary groove; 12. Adjusting ring; 13. Adjusting screw; 14. Bearing; 15. Adjusting block; 16. Mounting block; 17. Connecting frame rod; 18. Adhesive plate; 19. Mounting rod; 20. Pressing rod; 21. Reset rod; 22. Mounting ring; 23. Torsion spring; 24. Reset groove; 25. V-shaped frame rod; 26. Pressing groove; 27. U-shaped frame rod; 28. L-shaped frame rod; 29. ​​Arc plate; 30. Inclined arc groove; 31. L-shaped plate; 32. Sliding rod; 33. Contact protrusion; 34. Fastening block; 35. Limiting ring; 36. Spring; 37. Positioning slide rod. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-8This invention relates to a prefabricated steel structure for civil engineering, comprising a connector 1 and a steel beam 2. The connector 1 has a connecting socket 3, and the steel beam 2 has a connecting rod 4 fixedly installed on it. A positioning assembly is provided on both the connector 1 and the steel beam 2, including a main rod 5 and a secondary rod 6. The steel beam 2 has a main insertion hole 7, and the connector 1 and connecting rod 4 have secondary insertion holes 8. An auxiliary assembly is provided on the connector 1, including an auxiliary rod 9. The connecting rod 4 has an auxiliary insertion hole 10 and an auxiliary groove 11. The positioning assembly includes an adjusting ring 12 rotatably mounted on the connector 1, an adjusting screw 13 movably mounted on the adjusting ring 12, a bearing 14 fixedly mounted at one end of the adjusting screw 13, and an adjusting block 15 fixedly mounted on the bearing 14. A mounting block 16 is fixedly installed on the segment 15. A connecting rod 17 is fixedly installed on the side end face of the mounting block 16. A bonding plate 18 is fixedly installed on the end of the connecting rod 17 away from the mounting block 16. A positioning slide rod 37 is fixedly installed on the adjusting block 15. One end of the adjusting screw 13 extends to the inside of the connector 1, and the other end of the adjusting screw 13 extends to the other side of the connector 1. The main insertion rod 5 and the auxiliary insertion rod 6 are both fixedly installed on the bonding plate 18. The main insertion rod 5 is embedded in the main insertion hole 7, and the auxiliary insertion rod 6 is embedded in the auxiliary insertion hole 8. The end of the positioning slide rod 37 away from the adjusting block 15 extends to one side of the connector 1. The positioning slide rod 37 is slidably installed with the connector 1. The auxiliary insertion hole 8 on the connector 1 and the auxiliary insertion hole 8 on the connecting rod 4 are in the same vertical direction to ensure that the auxiliary insertion rod 6 can be accurately inserted into the auxiliary insertion hole 8.

[0021] In this embodiment, the connecting rod 4 on the steel beam 2 is inserted into the connecting socket 3 of the connector 1. Then, the adjusting ring 12 on the connector 1 is rotated. By utilizing the cooperation between the adjusting ring 12 and the adjusting screw 13, the adjusting screw 13 and the bearing 14, and the bearing 14 and the adjusting block 15, the mounting block 16 on the adjusting block 15 will drive the bonding plate 18 on the connecting frame rod 17 to move inward towards the connector 1. Then, through the limiting sliding between the positioning slide rod 37 and the connector 1, the bonding plate 18 will be bonded to the connector 1 and the steel beam 2. The main rod 5 on the bonding plate 18 will be inserted into the main socket 7, and the auxiliary rod 6 will pass through the auxiliary socket 8 on the connector 1 and be inserted into the auxiliary socket 8 of the connecting rod 4. By utilizing the cooperation between the main rod 5 and the main socket 7 and the auxiliary rod 6 and the auxiliary socket 8, a double locking is formed, which enhances the shear resistance and effectively ensures the firmness between the steel beam 2 and the connector 1. At the same time, it is also very convenient to disassemble them.

[0022] The auxiliary components include a mounting rod 19 fixedly mounted on the adjusting block 15, a pressing rod 20 fixedly mounted on the mounting rod 19, a reset rod 21 rotatably mounted on the connector 1, a mounting ring 22 fixedly mounted on the reset rod 21, a torsion spring 23 fixedly connected to the mounting ring 22, a reset groove 24 formed inside the connector 1, a V-shaped bracket 25 fixedly mounted at the end of the reset rod 21, a pressing groove 26 formed on the V-shaped bracket 25, a U-shaped bracket 27 fixedly mounted at the end of the V-shaped bracket 25, the mounting ring 22 being positioned inside the reset groove 24, and the torsion spring 23 being located away from the reset rod 24. One end of the mounting ring 22 is fixedly connected to the inside of the reset groove 24. The position of the pressing groove 26 is directly below the pressing rod 20. The pressing rod 20 and the pressing groove 26 slide in contact. The auxiliary insertion rod 9 is fixedly installed on the U-shaped bracket rod 27. The auxiliary insertion rod 9 passes through the auxiliary insertion hole 10 and is embedded in the auxiliary groove 11. The auxiliary insertion hole 10 and the auxiliary groove 11 are in the same direction, which makes it easy for the auxiliary insertion rod 9 to pass through the auxiliary insertion hole 10 and enter the interior of the auxiliary groove 11. There are two torsion springs 23 on the mounting ring 22 to ensure that the rotated V-shaped bracket rod 25 can return to its original position.

[0023] In this embodiment, when the adjusting block 15 moves, it will drive the pressing rod 20 to move synchronously. Through the cooperation of the pressing rod 20 and the reset groove 24 on the V-shaped frame rod 25, the V-shaped frame rod 25 will rotate around the reset rod 21. The U-shaped frame rod 27 on the U-shaped frame rod 27 will drive the auxiliary insertion rod 9 to pass through the auxiliary insertion hole 10 and be embedded in the auxiliary groove 11, forming an additional mechanical interlock, which significantly improves the vibration resistance and pull-out resistance between the connector 1 and the steel beam 2, and further improves the fastening of the connector 1 and the steel beam 2. When the V-shaped frame rod 25 is not pressed down by the pressing rod 20, the V-shaped frame rod 25 will return to its original position through the reaction force of the torsion spring 23 on the reset rod 21. At the same time, the auxiliary insertion rod 9 on the U-shaped frame rod 27 will fall out from the auxiliary groove 11 and the auxiliary insertion hole 10, releasing the auxiliary lock, thereby facilitating quick disassembly.

[0024] An L-shaped support rod 28 is fixedly installed on the side end face of connector 1. An arc-shaped plate 29 is fixedly installed on the L-shaped support rod 28. An inclined arc groove 30 is opened on the inner side of the arc-shaped plate 29. An L-shaped plate 31 is fixedly installed on the V-shaped support rod 25. A sliding rod 32 is slidably installed on the L-shaped plate 31. A contact protrusion 33 is fixedly installed at one end of the sliding rod 32. A fastening block 34 is fixedly installed at the other end of the sliding rod 32. A limit ring 35 is fixedly installed on the sliding rod 32. A spring 36 is fixedly connected to the limit ring 35. The two ends of the sliding rod 32 are located on both sides of the U-shaped support rod 27. The position of the fastening block 34 is... On the inner side of the L-shaped plate 31, the contact protrusion 33 is located inside the inclined arc groove 30. The inside of the inclined arc groove 30 is an inclined surface. When the contact protrusion 33 slides in the inclined arc groove 30, the inclined surface inside the inclined arc groove 30 causes the fastening block 34 to move inward. When the V-shaped bracket 25 rotates, it will drive the L-shaped plate 31 to move to the outside of the bonding plate 18, providing movement space for the sliding rod 32. The inclined surface inside the inclined arc groove 30 is set according to the shape of the inclined arc groove 30, ensuring that the sliding rod 32 will move inward as it moves with the L-shaped plate 31.

[0025] In this embodiment, when the U-shaped frame rod 27 rotates synchronously with the V-shaped frame rod 25, the L-shaped plate 31 on the V-shaped frame rod 25 will be on the outside of the bonding plate 18. When the contact protrusion 33 on the sliding rod 32 slides in the inclined arc groove 30, the fastening block 34 on the sliding rod 32 will move inward by using the inclined surface in the inclined arc groove 30. When the U-shaped frame rod 27 rotates to the final position with the V-shaped frame rod 25, the contact protrusion 33 on the sliding rod 32 will use the pressure of the inclined surface to make the fastening block 34 on the sliding rod 32 fit against the side end of the bonding plate 18. The additional lateral pressure will enhance the firmness between the bonding plate 18 and the connector 1, effectively enhance the embedding of the main insertion rod 5 and the main insertion hole 7 and the embedding of the secondary insertion rod 6 and the secondary insertion hole 8, and further enhance the firmness between the connector 1 and the steel beam 2.

[0026] Working principle: In use, insert the connecting rod 4 on the steel beam 2 into the connecting socket 3 of the connector 1, and then rotate the adjusting ring 12 on the connector 1. Utilizing the cooperation between the adjusting ring 12 and the adjusting screw 13, the adjusting screw 13 and the bearing 14, and the bearing 14 and the adjusting block 15, the mounting block 16 on the adjusting block 15 will drive the bonding plate 18 on the connecting frame rod 17 to move inwards towards the connector 1. Then, through the limiting sliding between the positioning slide rod 37 and the connector 1, the bonding plate 18 will adhere to the connector 1 and the steel beam 2. The main insert 5 on the bonding plate 18 will be inserted into the main socket 7, and the auxiliary insert 6 will pass through... The secondary insertion hole 8 on connector 1 is inserted into the secondary insertion hole 8 of connecting rod 4. The cooperation between main rod 5 and main insertion hole 7, and between secondary rod 6 and secondary insertion hole 8, forms a double lock, enhancing shear resistance and effectively ensuring the firmness between steel beam 2 and connector 1. This also facilitates disassembly. When adjusting block 15 moves, it drives downward pressure rod 20 to move synchronously. Through the cooperation of downward pressure rod 20 and reset groove 24 on V-shaped frame rod 25, V-shaped frame rod 25 rotates around reset rod 21. U-shaped frame rod 27, located on U-shaped frame rod 27, drives auxiliary insertion rod 9 through auxiliary insertion hole 10 and auxiliary groove. The 11-piece inlay creates an additional mechanical interlock, significantly improving the vibration and pull-out resistance between the connector 1 and the steel beam 2, further enhancing the fastening of the connector 1 and the steel beam 2. When the V-shaped support rod 25 is not pressed down by the lowering rod 20, the V-shaped support rod 25 will return to its original position through the reaction force of the torsion spring 23 on the return rod 21. At the same time, the auxiliary insert rod 9 on the U-shaped support rod 27 will fall out from the auxiliary groove 11 and the auxiliary insertion hole 10, releasing the auxiliary lock, thus facilitating quick disassembly. When the U-shaped support rod 27 rotates synchronously with the V-shaped support rod 25, the L-shaped plate 31 on the V-shaped support rod 25 will be on the outside of the bonding plate 18. When the contact protrusion 33 on the sliding rod 32 slides in the inclined arc groove 30, the fastening block 34 on the sliding rod 32 moves inward using the inclined surface in the inclined arc groove 30. When the U-shaped frame rod 27 rotates to the final position following the V-shaped frame rod 25, the contact protrusion 33 on the sliding rod 32 will use the pressure of the inclined surface to make the fastening block 34 on the sliding rod 32 fit against the side end of the bonding plate 18. The additional lateral pressure enhances the firmness between the bonding plate 18 and the connector 1, effectively enhancing the embedding of the main insertion rod 5 and the main insertion hole 7, as well as the embedding of the secondary insertion rod 6 and the secondary insertion hole 8, further enhancing the firmness between the connector 1 and the steel beam 2.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the 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 invention.

Claims

1. A prefabricated steel structure for civil engineering, comprising connectors (1) and steel beams (2), characterized in that: The connector (1) is provided with a connecting socket (3), the steel beam (2) is fixedly installed with a connecting rod (4), the connector (1) and the steel beam (2) are provided with a positioning component, the positioning component is provided with a main rod (5) and a secondary rod (6), the steel beam (2) is provided with a main insertion hole (7), and the connector (1) and the connecting rod (4) are provided with a secondary insertion hole (8). The connector (1) is provided with an auxiliary component, the auxiliary component is provided with an auxiliary plug (9), the connecting plug (4) is provided with an auxiliary plug hole (10), and the connecting plug (4) is provided with an auxiliary groove (11).

2. The prefabricated steel structure for civil engineering according to claim 1, characterized in that: The positioning assembly includes an adjusting ring (12) rotatably mounted on a connector (1), an adjusting screw (13) movably mounted on the adjusting ring (12), a bearing (14) fixedly mounted at one end of the adjusting screw (13), an adjusting block (15) fixedly mounted on the bearing (14), an mounting block (16) fixedly mounted on the adjusting block (15), a connecting rod (17) fixedly mounted on the side end face of the mounting block (16), a bonding plate (18) fixedly mounted at the end of the connecting rod (17) away from the mounting block (16), and a positioning slide rod (37) fixedly mounted on the adjusting block (15).

3. A prefabricated steel structure for civil engineering according to claim 2, characterized in that: One end of the adjusting screw (13) extends to the inner side of the connector (1), and the other end of the adjusting screw (13) extends to the other side of the connector (1). The main insert (5) and the auxiliary insert (6) are both fixedly installed on the bonding plate (18). The main insert (5) is embedded in the main insertion hole (7), and the auxiliary insert (6) is embedded in the auxiliary insertion hole (8). The end of the positioning slide rod (37) away from the adjusting block (15) extends to one side of the connector (1). The positioning slide rod (37) is slidably installed with the connector (1).

4. A prefabricated steel structure for civil engineering according to claim 2, characterized in that: The auxiliary component includes a mounting rod (19) fixedly mounted on the adjusting block (15), a pressing rod (20) fixedly mounted on the mounting rod (19), a reset rod (21) rotatably mounted on the connector (1), a mounting ring (22) fixedly mounted on the reset rod (21), and a torsion spring (23) fixedly connected to the mounting ring (22).

5. A prefabricated steel structure for civil engineering according to claim 4, characterized in that: The connector (1) has a reset groove (24) inside, and a V-shaped bracket (25) is fixedly installed at the end of the reset rod (21). A pressing groove (26) is opened on the V-shaped bracket (25), and a U-shaped bracket (27) is fixedly installed at the end of the V-shaped bracket (25).

6. A prefabricated steel structure for civil engineering according to claim 5, characterized in that: The mounting ring (22) is located inside the reset groove (24). The end of the torsion spring (23) away from the mounting ring (22) is fixedly connected inside the reset groove (24). The pressure groove (26) is located directly below the pressure rod (20). The pressure rod (20) slides in contact with the pressure groove (26). The auxiliary insert rod (9) is fixedly installed on the U-shaped frame rod (27). The auxiliary insert rod (9) passes through the auxiliary insertion hole (10) and is embedded in the auxiliary groove (11).

7. A prefabricated steel structure for civil engineering according to claim 5, characterized in that: An L-shaped support rod (28) is fixedly installed on the side end face of the connector (1). An arc plate (29) is fixedly installed on the L-shaped support rod (28). An inclined arc groove (30) is opened on the inner side of the arc plate (29). An L-shaped plate (31) is fixedly installed on the V-shaped support rod (25). A sliding rod (32) is slidably installed on the L-shaped plate (31).

8. A prefabricated steel structure for civil engineering according to claim 7, characterized in that: A contact protrusion (33) is fixedly installed at one end of the sliding rod (32), and a fastening block (34) is fixedly installed at the other end of the sliding rod (32). A limit ring (35) is fixedly installed on the sliding rod (32), and a spring (36) is fixedly connected to the limit ring (35).

9. A prefabricated steel structure for civil engineering according to claim 8, characterized in that: The two ends of the sliding rod (32) are located on both sides of the U-shaped frame rod (27), the fastening block (34) is located inside the L-shaped plate (31), and the contact protrusion (33) is located inside the inclined arc groove (30). The inside of the inclined arc groove (30) is an inclined surface. When the contact protrusion (33) slides in the inclined arc groove (30), the fastening block (34) moves inward by utilizing the inclined surface inside the inclined arc groove (30).

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