A self-compacting steel reinforced concrete column and orthogonal truss connecting joint suitable for large span

Abstract

The application relates to the technical field of building, and discloses a self-compacting steel reinforced concrete column and orthogonal truss connecting joint suitable for large span, which comprises a concrete column and an orthogonal truss connecting steel frame. The anti-deformation mechanism formed by a rocker arm, a sleeve ring, a sleeve, a threaded sleeve and a hook can drive the hook to retract by rotating the threaded sleeve, drive the rocker arm and the sleeve to form an active tension on the truss in an inclined linear shape, and real-time offset the deformation trend of the truss caused by the dead weight and external load, so as to guarantee the structural stability and use safety. The synchronous frame of the rotation center of the rocker arm and the end pressure roller can be synchronously supported at the bottom of the U-shaped steel frame when the angle of the rocker arm is adjusted, supplement the vertical supporting force of the U-shaped steel frame, enhance the tightness of the connection between the truss and the U-shaped steel frame, form horizontal and vertical bidirectional stability guarantee, and strengthen the overall stability of the joint.

Description

Technical Field

[0001] This invention belongs to the field of building technology, specifically, it relates to a connection node between a self-compacting steel-concrete column and an orthogonal truss suitable for large spans. Background Technology

[0002] As the construction industry moves towards larger spans and larger spaces, the combined structure of self-compacting steel-concrete composite columns and orthogonal trusses is widely used in large stadiums, industrial plants, and transportation hubs due to its combination of the high strength of steel and the rigidity of concrete. The core of this type of structure lies in the connection nodes, which must simultaneously bear the horizontal and vertical loads transmitted by the truss, as well as the additional bending moments generated by the span. Their performance directly determines the safety and stability of the overall structure, thus placing extremely high demands on the load-bearing capacity, deformation resistance, and ease of installation of the connection nodes.

[0003] Once the truss is connected to the concrete column, the U-shaped steel frame and other structures, which serve as transitional force transmission components, can only bear the tensile load transmitted in the horizontal direction. There is a lack of dedicated support structures in the vertical direction to effectively lift or limit it. This force pattern leads to an imbalance in the overall force state of the node. As the service time progresses, under the continuous action of the truss's own weight, external wind and snow loads, and vibration loads, the U-shaped steel frame is prone to deformation problems such as local bending and sinking due to the lack of vertical support.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: A connection node between a self-compacting steel-concrete composite column and an orthogonal truss suitable for large spans includes a concrete column and an orthogonal truss connecting steel frame.

[0006] The sidewall of the concrete column is equipped with several pairs of U-shaped steel frames, and the sidewall of the U-shaped steel frame is connected to the orthogonal truss connecting steel frame by locking bolts. A rocker arm is rotatably mounted on the orthogonal truss connecting steel frame. A collar is mounted at the end of the rocker arm. A sleeve is rotatably mounted on the side wall of the concrete column. A threaded sleeve is rotatably mounted on the sleeve via a thread, and a hook is mounted on the threaded sleeve. The hook is used to connect with the collar. After connection, rotating the threaded sleeve drives the hook to retract, thereby causing the rocker arm and sleeve to change angles to form an inclined straight line, which is used to pull the orthogonal truss connecting steel frame to prevent it from deforming. The rocker arm rotation center is equipped with a timing frame, and a pressure roller is installed at the end of the timing frame. When the rocker arm angle changes, the pressure roller is driven to rotate and support the bottom of the U-shaped steel frame, thereby improving stability. The U-shaped steel frame is rotatably mounted with a pressure plate, and the orthogonal truss connecting steel frame is plugged with a top rod. The side wall of the rocker arm rotation center is fitted with a protrusion that fits against the top rod. When the rocker arm drives the protrusion to rotate, it squeezes the side wall top rod to move. The top rod pushes the eccentric position of the pressure plate, thereby causing the side wall of the pressure plate to cover the orthogonal truss connecting steel frame and position it.

[0007] In a preferred embodiment of the present invention, the U-shaped steel frame is cast inside the concrete column, and a reinforcing rib is installed at the bottom of the U-shaped steel frame. The reinforcing rib is triangular and is connected to the concrete column. The locking bolts are respectively connected to the bottom and side wall of the orthogonal truss connecting steel frame and concrete column.

[0008] In a preferred embodiment of the present invention, a welding plate is welded onto the orthogonal truss connecting steel frame, and a fixed seat is fixedly installed on the welding plate. The fixed seat has a notch, and the rocker arm is placed on the side wall of the notch. A synchronous shaft is movably installed through the inner side wall of the notch. One end of the synchronous shaft is connected to the rocker arm, and the other end of the synchronous shaft is connected to the synchronous frame. A support platform is installed on the welding plate, and the support platform is placed at the bottom of the rocker arm to position the rocker arm.

[0009] In a preferred embodiment of the present invention, a pair of positioning plates are installed on the sleeve, and an mounting seat is rotatably installed on the pair of positioning plates. The side wall of the mounting seat is integrally cast with the concrete column. The side wall of the sleeve is provided with a threaded groove, which is screwed into the threaded sleeve. The side wall of the threaded sleeve is provided with an external hexagonal protrusion, which facilitates the rotation of the threaded sleeve later.

[0010] In a preferred embodiment of the present invention, a through groove is provided inside the sleeve, and a plug rod is movably inserted into the through groove. The plug rod is hexagonal, and the size of the plug rod is adapted to the size of the through groove.

[0011] In a preferred embodiment of the present invention, a sliding sleeve is installed at the end of the insertion rod, a hook is installed at the bottom of the sliding sleeve, and a sliding groove is provided on the side wall of the sliding sleeve, and the side wall of the sliding groove is rotatably connected to the threaded sleeve.

[0012] In a preferred embodiment of the present invention, the synchronizing frame is U-shaped, and the pressure roller is placed on the lower surface of the U-shaped steel frame.

[0013] In a preferred embodiment of the present invention, a rotating roller is rotatably mounted on the U-shaped steel frame, and the rotating roller is in contact with the side wall of the orthogonal truss connecting steel frame. A pressure plate is mounted on the rotating roller, and the pressure plate is cam-shaped. A push plate is mounted at the rotation center of the pressure plate, and a push rod is mounted on the push plate. The push rod and the top rod correspond to each other.

[0014] In a preferred embodiment of the present invention, a sliding plate is installed at one end of the top rod, the sliding plate is slidably connected to the protruding side wall, a top plate is installed at the other end of the sliding plate, the top plate is slidably connected to the surface of the push rod, and a guide seat is inserted into the top rod and welded to the orthogonal truss connecting steel frame.

[0015] In a preferred embodiment of the present invention, a baffle is installed on the top rod, a limiting seat is inserted into the top rod, the limiting seat is welded onto the orthogonal truss connecting steel frame, and a return spring is sleeved on the side wall of the top rod, one end of the return spring is clamped to the baffle, and the other end of the return spring is clamped to the limiting seat.

[0016] Compared with the prior art, the present invention has the following advantages: This invention utilizes an anti-deformation mechanism comprised of a rocker arm, collar, sleeve, threaded sleeve, and hook. Rotating the threaded sleeve drives the hook to retract, causing the rocker arm and sleeve to move in an inclined, straight line, generating an active tensile force on the truss. This effectively counteracts the deformation tendency of the truss caused by its own weight and external loads, ensuring structural stability and operational safety. The synchronous frame at the center of the rocker arm's rotation and the end pressure roller simultaneously support the bottom of the U-shaped steel frame when the rocker arm angle is adjusted, providing additional vertical support to the U-shaped steel frame, enhancing the tightness of the connection between the truss and the U-shaped steel frame, forming a two-way stability guarantee in both horizontal and vertical directions, and strengthening the overall stability of the node.

[0017] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0018] In the attached diagram: Figure 1 This is an overall diagram of a connection node between a self-compacting steel-concrete composite column and an orthogonal truss, suitable for large spans. Figure 2 This is a local design for connecting self-compacting steel-concrete composite columns and orthogonal trusses with large spans. Figure 1 ; Figure 3 This is a local design for connecting self-compacting steel-concrete composite columns and orthogonal trusses with large spans. Figure 2 ; Figure 4 This is a local design for connecting self-compacting steel-concrete composite columns and orthogonal trusses with large spans. Figure 3 ; Figure 5 A cross-sectional view of a U-shaped steel frame for connecting a self-compacting steel-concrete composite column and an orthogonal truss, suitable for large spans. Figure 6 A sleeve section view of a connection node between a self-compacting steel-concrete composite column and an orthogonal truss, suitable for large spans; Figure 7 This is a suitable connection node for large-span self-compacting steel-concrete composite columns and orthogonal trusses. Figure 5 A bottom view.

[0019] In the diagram: 1. Concrete column; 2. Orthogonal truss connecting steel frame; 3. U-shaped steel frame; 4. Reinforcing rib; 5. Fixed seat; 6. Welded plate; 7. Rocker arm; 8. Collar; 9. Support platform; 10. Sleeve; 11. Positioning plate; 12. Mounting seat; 13. Threaded groove; 14. Threaded sleeve; 15. Through groove; 16. External hexagonal protrusion; 18. Insert rod; 19. Sliding sleeve; 20. Hook; 21. Slide groove; 22. Synchronous shaft; 23. Synchronous frame; 24. Pressure roller; 25. Rotating roller; 26. Pressure plate; 27. Push plate; 28. Push rod; 29. ​​Top rod; 30. Slide plate; 31. Protrusion; 32. Top plate; 33. Limit seat; 34. Baffle; 35. Return spring; 36. Locking bolt; 37. Notch; 38. Guide seat. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention. Example 1:

[0021] like Figures 1 to 7 As shown, a connection node between a self-compacting steel-concrete composite column and an orthogonal truss suitable for large spans includes a concrete column 1 and an orthogonal truss connecting steel frame 2.

[0022] Several pairs of U-shaped steel frames 3 are installed on the side wall of the concrete column 1. The side wall of the U-shaped steel frame 3 is connected to the orthogonal truss connecting steel frame 2 by locking bolts 36. A rocker arm 7 is rotatably mounted on the orthogonal truss connecting steel frame 2, and a collar 8 is mounted at the end of the rocker arm 7. A sleeve 10 is rotatably mounted on the side wall of the concrete column 1. A threaded sleeve 14 is rotatably mounted on the sleeve 10, and a hook 20 is mounted on the threaded sleeve 14. The hook 20 is used to connect with the collar 8. After connection, rotating the threaded sleeve 14 will drive the hook 20 to retract, thereby causing the rocker arm 7 and the sleeve 10 to change angle to form an inclined straight line, which is used to pull the orthogonal truss connecting steel frame 2 to prevent it from deforming. A timing frame 23 is installed at the rotation center of the rocker arm 7, and a pressure roller 24 is installed at the end of the timing frame 23. When the angle of the rocker arm 7 changes, the pressure roller 24 is driven to rotate and support the bottom of the U-shaped steel frame 3, thereby improving stability. The U-shaped steel frame 3 is rotatably mounted with a pressure plate 26. The orthogonal truss connecting steel frame 2 is plugged with a top rod 29. The rocker arm 7 has a protrusion 31 on its side wall that fits against the top rod 29. When the rocker arm 7 drives the protrusion 31 to rotate, it squeezes the side wall top rod 29 to move. The top rod 29 pushes the pressure plate 26 to an eccentric position, so that the side wall of the pressure plate 26 covers the orthogonal truss connecting steel frame 2 and positions it.

[0023] like Figures 1 to 7 As shown, in a specific embodiment, the U-shaped steel frame 3 is cast inside the concrete column 1, and a reinforcing rib 4 is installed at the bottom of the U-shaped steel frame 3. The reinforcing rib 4 is triangular and is cast into the concrete column 1. Locking bolts 36 are respectively connected to the bottom and side wall of the orthogonal truss connecting steel frame 2 and concrete column 1. The U-shaped steel frame 3 cast inside the concrete column 1, together with the triangular reinforcing rib 4, enhances the connection strength between the U-shaped steel frame 3 and the concrete column 1. The locking bolts 36 connecting the bottom and side wall further improve the overall connection's firmness.

[0024] like Figures 1 to 7 As shown, furthermore, a welding plate 6 is welded onto the orthogonal truss connecting steel frame 2, and a fixing seat 5 is fixedly installed on the welding plate 6. A notch 37 is provided on the fixing seat 5, and the rocker arm 7 is placed on the side wall of the notch 37. A synchronous shaft 22 is movably installed through the inner side wall of the notch 37. One end of the synchronous shaft 22 is connected to the rocker arm 7, and the other end is connected to the synchronous frame 23. A support platform 9 is installed on the welding plate 6, and the support platform 9 is placed at the bottom of the rocker arm 7 to position the rocker arm 7. The welding plate 6 and the fixing seat 5 provide a stable installation foundation for the rocker arm 7, the synchronous shaft 22 ensures the synchronous movement of the rocker arm 7 and the synchronous frame 23, and the support platform 9 ensures the accuracy of the initial position of the rocker arm 7, improving the precision of the structural installation. Example 2:

[0025] The difference between the above embodiments and this embodiment is that: Figures 1 to 7 As shown, a pair of positioning plates 11 are installed on the sleeve 10, and a mounting base 12 is rotatably mounted on the pair of positioning plates 11. The side wall of the mounting base 12 is integrally cast with the concrete column 1. The side wall of the sleeve 10 has a threaded groove 13, which is screwed into the threaded sleeve 14. The side wall of the threaded sleeve 14 is equipped with an external hexagonal protrusion 16, which facilitates the rotation of the threaded sleeve 14 later. The integral casting of the mounting base 12 with the concrete column 1 enhances the stability of the sleeve 10 installation, while the design of the external hexagonal protrusion 16 facilitates tool operation and improves the convenience of rotating and adjusting the threaded sleeve 14.

[0026] like Figures 1 to 7As shown in the specific embodiment, the sleeve 10 has a through groove 15 inside, and a hexagonal rod 18 is movably inserted into the through groove 15. The dimensions of the rod 18 are adapted to the dimensions of the through groove 15. A sliding sleeve 19 is installed at the end of the rod 18, and a hook 20 is installed at the bottom of the sliding sleeve 19. A sliding groove 21 is opened on the side wall of the sliding sleeve 19, and the side wall of the sliding groove 21 is rotatably connected to the threaded sleeve 14. The adaptation design of the hexagonal rod 18 and the through groove 15 provides guidance for the movement of the sliding sleeve 19 and prevents it from deviating.

[0027] like Figures 1 to 7 As shown, the synchronization frame 23 is U-shaped, and the pressure roller 24 is placed on the lower surface of the U-shaped steel frame 3. The U-shaped synchronization frame 23 has a stable structure, and with the pressure roller 24 and the lower surface of the U-shaped steel frame 3 providing close support, the force can be distributed more evenly, further improving the stability of the support. Example 3:

[0028] The difference between the above embodiments and this embodiment is that: Figures 1 to 7 As shown, a rotating roller 25 is rotatably mounted on the U-shaped steel frame 3, and the roller 25 is in contact with the side wall of the orthogonal truss connecting steel frame 2. A pressure plate 26 is mounted on the roller, and the pressure plate 26 is cam-shaped. A push plate 27 is mounted at the center of rotation of the pressure plate 26, and a push rod 28 is mounted on the push plate 27. The push rod 28 corresponds to the push rod 29. The cam-shaped pressure plate 26 can press and release the orthogonal truss connecting steel frame 2 through rotation, while the roller 25 reduces friction with the steel frame. The corresponding design of the push rod 28 and the push rod 29 ensures the accuracy of power transmission.

[0029] like Figures 1 to 7 As shown, in a specific embodiment, a sliding plate 30 is installed at one end of the push rod 29, and the sliding plate 30 is slidably connected to the side wall of the protrusion 31. A top plate 32 is installed at the other end of the sliding plate 30, and the top plate 32 is slidably connected to the surface of the push rod 28. A guide seat 38 is inserted into the push rod 29, and the guide seat 38 is welded to the orthogonal truss connecting steel frame 2. The sliding fit between the sliding plate 30 and the protrusion 31, and the sliding contact between the top plate 32 and the push rod 28, reduce frictional loss between components. The guide seat 38 ensures the linearity of the movement of the push rod 29 and improves the smoothness of the structural movement.

[0030] like Figures 1 to 7 As shown, a baffle 34 is installed on the top rod 29, and a limit seat 33 is inserted into the top rod 29. The limit seat 33 is welded onto the orthogonal truss connecting steel frame 2. A return spring 35 is sleeved on the side wall of the top rod 29. One end of the return spring 35 is engaged with the baffle 34, and the other end is engaged with the limit seat 33. The cooperation between the return spring 35, the baffle 34, and the limit seat 33 can automatically drive the top rod 29 to return to its original position when needed, thereby automatically releasing the pressure plate 26 and facilitating the adjustment and disassembly of the joint.

[0031] The implementation principle of this invention for a connection node between a self-compacting steel-concrete composite column and an orthogonal truss suitable for large spans is as follows: During the construction of this connection node, the U-shaped steel frame 3 is first poured into the concrete column 1, and the triangular reinforcing ribs 4 at the bottom of the U-shaped steel frame 3 are poured simultaneously with the concrete column 1 to enhance the stability of the connection between the U-shaped steel frame 3 and the concrete column 1. Then, the orthogonal truss connecting steel frame 2 and the bottom and side wall of the concrete column 1 are tightened and fixed by locking bolts 36, thus initially achieving the connection between the two. During this process, the welding plate 6 welded on the orthogonal truss connecting steel frame 2 will be positioned along with the steel frame, and the fixed seat 5 and support platform 9 on the welding plate 6 will also be in the preset position. The rocker arm 7 is placed in the notch 37 of the fixed seat 5 and is movably connected to the fixed seat 5 through the synchronous shaft 22. The support platform 9 provides support for the bottom of the rocker arm 7, ensuring the stability of the initial position of the rocker arm 7.

[0032] After the initial connection is completed, the external hexagonal protrusion 16 on the side wall of the threaded sleeve 14 on the sleeve 10 is rotated, causing the threaded sleeve 14 to rotate along the threaded groove 13 of the sleeve 10. Since the threaded sleeve 14 is rotatably connected to the sliding groove 21 on the side wall of the sliding sleeve 19, the rotation of the threaded sleeve 14 is converted into the linear movement of the sliding sleeve 19, which in turn pulls the hook 20 at the bottom of the sliding sleeve 19 back towards the sleeve 10. When the hook 20 is connected to the collar 8 at the end of the rocker arm 7, the threaded sleeve 14 is continuously rotated, and the hook 20 will further pull the collar 8, causing the rocker arm 7 to change its angle around the synchronous shaft 22 as the rotation center. At the same time, the sleeve 10 rotates synchronously around the mounting base 12 as the rotation center until the rocker arm 7 and the sleeve 10 are in an inclined straight line. At this time, the orthogonal truss connecting steel frame 2 is tightened under the tension of the rocker arm 7, effectively preventing it from deforming in subsequent use. During this process, the hexagonal shape of the insert rod 18, which is adapted to the size of the through slot 15, can guide the movement of the sliding sleeve 19 and prevent the sliding sleeve 19 from shifting.

[0033] As the angle of the rocker arm 7 changes, the synchronous frame 23 connected to the other end of the synchronous shaft 22 will rotate together with the rocker arm 7. Since the synchronous frame 23 is U-shaped and has a pressure roller 24 installed at its end, when the rocker arm 7 rotates to the preset angle, the synchronous frame 23 will drive the pressure roller 24 to rotate to the lower surface of the U-shaped steel frame 3 and fit tightly with it. Through the support of the pressure roller 24 on the U-shaped steel frame 3, the stability of the connection between the orthogonal truss connecting steel frame 2 and the U-shaped steel frame 3 is further improved. Simultaneously, the protrusion 31 on the side wall of the rotation center of the rocker arm 7 will rotate together with the rocker arm 7. The protrusion 31 will slide into contact with the side wall of the slide plate 30. During the rotation, the slide plate 30 will be squeezed, causing the push rod 29 to move along the guide direction of the guide seat 38. The top plate 32 at one end of the push rod 29 will slide into contact with the surface of the push plate 27 and push the push plate 27. The push plate 27 will drive the pressure plate 26 to rotate around the rotating roller 25 as the rotation center (the pressure plate 26 is cam-shaped and installed on the rotating roller 25) until the side wall of the pressure plate 26 covers the surface of the orthogonal truss connecting steel frame 2, further positioning the orthogonal truss connecting steel frame 2. When subsequent adjustments or disassembly are required, the return spring 35 on the top rod 29 will generate an elastic return force in cooperation with the baffle 34 and the limit seat 33, pushing the top rod 29 back to the initial position, thereby driving the pressure plate 26 to reset and releasing the positioning restriction on the orthogonal truss connecting steel frame 2. The entire process, through the coordinated action of various components, achieves stable connection and flexible adjustment of the self-compacting steel-concrete column and the orthogonal truss in large-span scenarios.

Claims

1. A connection node between a self-compacting steel-concrete composite column and an orthogonal truss suitable for large spans, comprising a concrete column (1) and an orthogonal truss connecting steel frame (2), characterized in that: The sidewall of the concrete column (1) is equipped with several pairs of U-shaped steel frames (3), and the sidewall of the U-shaped steel frame (3) is connected to the orthogonal truss connecting steel frame (2) by locking bolts (36); A rocker arm (7) is rotatably mounted on the orthogonal truss connecting steel frame (2). A collar (8) is installed at the end of the rocker arm (7). A sleeve (10) is rotatably mounted on the side wall of the concrete column (1). A threaded sleeve (14) is rotatably mounted on the sleeve (10) through a thread. A hook (20) is installed on the threaded sleeve (14). The hook (20) is used to connect with the collar (8). After connection, the hook (20) is retracted by rotating the threaded sleeve (14), which in turn causes the rocker arm (7) and the sleeve (10) to change angles to form an inclined straight line, which is used to pull the orthogonal truss connecting steel frame (2) to prevent it from deforming. The rocker arm (7) is equipped with a timing frame (23) at its rotation center, and a pressure roller (24) is installed at the end of the timing frame (23). When the angle of the rocker arm (7) changes, the pressure roller (24) is driven to rotate and support the bottom of the U-shaped steel frame (3) to improve stability. The U-shaped steel frame (3) is rotatably mounted with a pressure plate (26), and the orthogonal truss connecting steel frame (2) is plugged with a top rod (29). The rocker arm (7) has a protrusion (31) on its rotating center side wall that fits against the top rod (29). When the rocker arm (7) drives the protrusion (31) to rotate, it squeezes the side wall top rod (29) to move. The top rod (29) pushes the pressure plate (26) to an eccentric position, so that the side wall of the pressure plate (26) covers the orthogonal truss connecting steel frame (2) and positions it.

2. The connection node between a self-compacting steel-concrete composite column and an orthogonal truss suitable for large spans as described in claim 1, characterized in that, The U-shaped steel frame (3) is cast inside the concrete column (1), and a reinforcing rib (4) is installed at the bottom of the U-shaped steel frame (3). The reinforcing rib (4) is triangular and is cast and connected to the concrete column (1). The locking bolts (36) are respectively connected to the bottom and side wall of the orthogonal truss connecting steel frame (2) and concrete column (1).

3. The connection node between a self-compacting steel-concrete composite column and an orthogonal truss suitable for large spans as described in claim 1, characterized in that, A welding plate (6) is welded onto the orthogonal truss connecting steel frame (2). A fixed seat (5) is fixedly installed on the welding plate (6). A notch (37) is opened on the fixed seat (5), and the rocker arm (7) is placed on the side wall of the notch (37). A synchronous shaft (22) is movably installed through the inner side wall of the notch (37). One end of the synchronous shaft (22) is connected to the rocker arm (7), and the other end of the synchronous shaft (22) is connected to the synchronous frame (23). A support platform (9) is installed on the welding plate (6). The support platform (9) is placed at the bottom of the rocker arm (7) and is used to position the rocker arm (7).

4. A connection node between a self-compacting steel-concrete composite column and an orthogonal truss suitable for large spans, as described in claim 1, is characterized in that... A pair of positioning plates (11) are installed on the sleeve (10), and a mounting seat (12) is rotatably installed on the pair of positioning plates (11). The side wall of the mounting seat (12) is integrally cast with the concrete column (1). A threaded groove (13) is opened on the side wall of the sleeve (10). The threaded groove (13) is screwed into the threaded sleeve (14). An external hexagonal protrusion (16) is installed on the side wall of the threaded sleeve (14). The external hexagonal protrusion (16) facilitates the rotation of the threaded sleeve (14) in the later stage.

5. A connection node between a self-compacting steel-concrete composite column and an orthogonal truss suitable for large spans, as described in claim 1, is characterized in that... The sleeve (10) has a through groove (15) inside, and a plug rod (18) is movably inserted into the through groove (15). The plug rod (18) is hexagonal, and the size of the plug rod (18) is adapted to the size of the through groove (15).

6. A connection node between a self-compacting steel-concrete composite column and an orthogonal truss suitable for large spans, as described in claim 5, is characterized in that... The end of the insertion rod (18) is fitted with a sliding sleeve (19), the bottom of the sliding sleeve (19) is fitted with a hook (20), and the side wall of the sliding sleeve (19) is provided with a sliding groove (21), the side wall of the sliding groove (21) is rotatably connected to the threaded sleeve (14).

7. A connection node between a self-compacting steel-concrete composite column and an orthogonal truss suitable for large spans, as described in claim 1, is characterized in that... The synchronous frame (23) is U-shaped, and the pressure roller (24) is placed on the lower surface of the U-shaped steel frame (3).

8. A connection node between a self-compacting steel-concrete composite column and an orthogonal truss suitable for large spans, as described in claim 1, is characterized in that... A rotating roller (25) is rotatably mounted on the U-shaped steel frame (3), and the rotating roller (25) is in contact with the side wall of the orthogonal truss connecting steel frame (2). A pressure plate (26) is mounted on the rotating roller, and the pressure plate (26) is in the shape of a cam. A push plate (27) is mounted at the rotation center of the pressure plate (26), and a push rod (28) is mounted on the push plate (27). The push rod (28) corresponds to the top rod (29).

9. A connection node between a self-compacting steel-concrete composite column and an orthogonal truss for large spans, as described in claim 8, is characterized in that... One end of the top rod (29) is equipped with a sliding plate (30), which is slidably connected to the side wall of the protrusion (31). The other end of the sliding plate (30) is equipped with a top plate (32), which is slidably connected to the surface of the push rod (28). A guide seat (38) is inserted into the top rod (29), and the guide seat (38) is welded onto the orthogonal truss connecting steel frame (2).

10. A connection node between a self-compacting steel-concrete composite column and an orthogonal truss for large spans, as described in claim 1, is characterized in that... A baffle (34) is installed on the top rod (29), and a limiting seat (33) is inserted into the top rod (29). The limiting seat (33) is welded onto the orthogonal truss connecting steel frame (2). A return spring (35) is sleeved on the side wall of the top rod (29). One end of the return spring (35) is clamped onto the baffle (34), and the other end of the return spring (35) is clamped onto the limiting seat (33).

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