Reinforced steel structure stable in connection

Abstract

The invention relates to the technical field of steel structures, in particular to a stably-connected reinforced steel structure which comprises a main steel pipe. The multiple branch steel pipes are evenly distributed in the circumferential direction of the axis of the main steel pipe; the steel pipe reinforcing sleeve is coaxially arranged on the outer side of the main steel pipe and located between the branch steel pipe and the main steel pipe; according to the steadily-connected reinforced steel structure, the steel pipe reinforcing sleeve reinforces and supports the connecting portion of the main steel pipe and the branch steel pipe, the strength of the main steel pipe is improved, all connections are conducted on the steel pipe reinforcing sleeve, and damage to the main steel pipe in the connecting process is effectively reduced; the main steel pipe and the branch steel pipes are connected in an inner supporting and outer clamping mode, and the connecting ends of the branch steel pipes are reinforced. The pressure guiding and supporting mechanism can directionally guide the stress of the branch steel pipes to the main steel pipe for pressure dividing and unloading, and the part of the stress can be gradually unloaded in the guiding and conveying process, so that the overall supporting effect of the reinforced steel structure is improved.

Description

Technical Field

[0001] This invention relates to the field of steel structure technology, specifically to a reinforced steel structure with a stable connection. Background Technology

[0002] Steel structures are engineering structural systems assembled using steel as the primary load-bearing components through welding, bolting, and riveting. They are one of the core types of building structures and industrial equipment structures. Steel structures possess advantages such as high strength, good ductility, and homogeneous stability. Large-scale steel structures, in particular, refer to heavy-duty, large-size, and highly reliable structural systems used in long-span building construction and bridge projects. These systems utilize structural steel sections, steel plates, and steel pipes as core components, connected through welding and high-strength bolts. Their core characteristics are large spans, high load ratings, and complex structural systems, making them a core structural form for achieving large spaces and long spans in modern infrastructure projects.

[0003] The connection nodes of a steel structure are the core hubs for the transfer of loads between components. All loads of a steel structure must be transferred to the nodes through the components, and then transferred to other components or the foundation by the nodes. If the connection is not stable, the load transfer path will be interrupted, resulting in stress concentration at the node. The local stress will far exceed the design strength of the component, causing the node to deform, crack, or even break.

[0004] In steel structure buildings, the connection between steel pipes is very common, and the strength of the connection directly determines the overall structural strength of the steel structure. Therefore, a combination of triangular plates, fixing bolts, and welding is generally used to directly achieve vertical connections between steel pipes. While this method can fix the steel pipes, the limited contact area between the connected pipes affects the stability and strength of the connection. Furthermore, creating connection space for fixing bolts by machining multiple holes in the steel pipes compromises the integrity of the pipe itself, leading to weakened strength, instability, and reduced durability during use. Summary of the Invention

[0005] To address the aforementioned issues, a robust reinforced steel structure with stable connections is provided. A steel pipe reinforcing sleeve strengthens and supports the connection between the main steel pipe and the branch steel pipe, enhancing the strength of the main steel pipe. All connections are made on the steel pipe reinforcing sleeve, effectively reducing damage to the main steel pipe during the connection process. An internal support and external clamping method is used to connect the main steel pipe and the branch steel pipe, reinforcing the connection end of the branch steel pipe and effectively improving the connection strength between the main and branch steel pipes. A pressure-guiding support mechanism can direct the force on the branch steel pipe to the main steel pipe for pressure distribution and stress relief. Furthermore, this force is gradually relieved during the guidance process, improving the overall support effect of the reinforced steel structure.

[0006] To address the problems of existing technologies, the present invention provides a reinforced steel structure with a stable connection, comprising: Main steel pipe; A number of branch steel pipes are provided and are evenly distributed around the axis of the main steel pipe in a circumferential direction. The steel pipe reinforcing sleeve is coaxially installed on the outside of the main steel pipe and located between the branch steel pipe and the main steel pipe; The outer side of the steel pipe reinforcement sleeve is provided with several protrusions that mate with the end of the branch steel pipe, and the outer wall of the protrusions contacts the inner wall of the branch steel pipe. Two clamping discs that slide along the axial direction are also provided on the outer side of the steel pipe reinforcing sleeve. The two clamping discs are respectively positioned in a clamping manner above and below the support steel pipe. The steel pipe reinforcement sleeve is equipped with a pressure-guiding support mechanism that can center and guide the force on the branch steel pipe and relieve the force.

[0007] Preferably, the steel pipe reinforcing sleeve is connected to the main steel pipe by a number of locking bolts, and each locking bolt passes through two oppositely arranged protrusions along the main steel pipe.

[0008] Preferably, the two clamping discs are fixedly installed directly above and below the support steel pipe by a number of connecting bolts, and each connecting bolt vertically penetrates a protrusion and the support steel pipe inserted with the protrusion. Each of the protrusions has a rounded chamfer at its end.

[0009] Preferably, the pressure-guiding support mechanism includes: Two truncated cone bases are provided, and both truncated cone bases have holes with the same outer diameter as the steel pipe reinforcing sleeve. The truncated cone bases are arranged opposite each other and coaxially sleeved on the outside of the steel pipe reinforcing sleeve. The two frustum bases are located on opposite sides of the two clamping discs; The two frustum bases are connected by a number of large hexagonal bolts; The support rod assembly has a first end and a second end, the first end being rotatably connected to a frustum base, and the second end being rotatably connected to an adjacent support steel pipe.

[0010] Preferably, the support rod assembly is a telescopic rod body, which includes an outer rod and an inner sliding rod, and a limiting bolt is provided between the outer rod and the inner sliding rod.

[0011] Preferably, both the outer sleeve rod and the inner sliding rod have through holes arranged along their axes and perpendicular to their axes; Alternatively, the outer sleeve rod may have a through hole perpendicular to its axis, and the inner sliding rod may have through holes arranged along its axis and perpendicular to its axis. Alternatively, the inner sliding rod may have a through hole perpendicular to its axis, and the outer sliding rod may have through holes arranged along its axis and perpendicular to its axis. In the installed state, the limiting bolt passes through the holes on the outer sleeve rod and the inner sliding rod.

[0012] Preferably, each of the support rod assemblies is provided with a collar at the end away from the frustum base, and a spherical ring is coaxially connected to the inner side of the collar; The diameter of the spherical ring is the same as the inner diameter of the collar, and the spherical ring forms a groove with the same shape as the outer wall of the branch steel pipe. The spherical ring is fitted onto the outside of the support steel pipe through a groove and is rotatably connected to the collar.

[0013] Preferably, each of the spherical ring sleeves is fitted with two collars that contact its outer wall, and the outer side of the spherical ring sleeve is provided with a rotating shaft passing through the two collars along the direction of the transverse perpendicular support steel pipe; The collar is arranged in a circular shape, and the two rings located on the outer side of the same spherical collar can rotate relative to each other.

[0014] Preferably, both clamping discs are provided with threaded holes that mate with large hexagonal bolts, and the large hexagonal bolts pass through the threaded holes to connect the two frustum bases.

[0015] Preferably, the outer side of the steel pipe reinforcing sleeve is provided with several guide grooves along its axial direction, and the inner wall of the hole of the truncated cone is provided with several protrusions that cooperate with the guide grooves.

[0016] The advantages of this invention compared to the prior art are: 1. A steel pipe reinforcement sleeve is installed on the outside of the main steel pipe to reinforce and support the connection between the main steel pipe and the branch steel pipe, thereby increasing the strength of the main steel pipe. All connections are made on the steel pipe reinforcement sleeve, which effectively reduces the damage to the main steel pipe during the connection process.

[0017] 2. The connection between the main steel pipe and the branch steel pipe is achieved by using internal support and external clamping, which strengthens the connection end of the branch steel pipe, effectively improves the connection strength between the main steel pipe and the branch steel pipe, and enhances the stability of the connection.

[0018] 3. The pressure guiding support mechanism can guide the force on the branch steel pipe to the main steel pipe for pressure distribution and stress relief. In addition, the force will be gradually relieved during the guiding process, which improves the overall support effect of the reinforced steel structure. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a reinforced steel structure with a stable connection.

[0020] Figure 2 This is a three-dimensional top-view cross-sectional diagram of a reinforced steel structure with a stable connection.

[0021] Figure 3 This is a schematic diagram of a steel pipe reinforcement sleeve and its external structure, which is a type of reinforced steel structure with a stable connection.

[0022] Figure 4 This is a schematic diagram of a three-dimensional steel pipe reinforcement sleeve structure for a robust and connected reinforced steel structure.

[0023] Figure 5 This is a schematic diagram of the three-dimensional cross-section of a reinforced steel pipe sleeve and its external structure, which is a type of robustly connected steel structure.

[0024] Figure 6 This is a schematic diagram of the connection structure between the clamping disc and the frustum base of a reinforced steel structure with a stable connection.

[0025] Figure 7 This is a schematic diagram of a three-dimensional collar structure of a reinforced steel structure with a stable connection.

[0026] Figure 8 This is a schematic diagram of a spherical ring-shaped three-dimensional structure of a reinforced steel structure with a stable connection.

[0027] The numbers in the diagram are as follows: 1. Main steel pipe; 2. Branch steel pipe; 3. Steel pipe reinforcing sleeve; 3a. Protrusion; 3b. Clamping plate; 3c. Locking bolt; 3d. Connecting bolt; 4. Frustum base; 5. Large hexagonal bolt; 6. Support rod assembly; 6a. Outer rod; 6b. Inner sliding rod; 6c. Limiting bolt; 6d. Collar; 6d1. Spherical ring sleeve. Detailed Implementation

[0028] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0029] See Figure 1 and Figure 2 As shown, a robustly connected reinforced steel structure includes: Main steel pipe 1; Branch steel pipes 2 are provided in a plurality of them, and the plurality of branch steel pipes 2 are evenly distributed around the axis of the main steel pipe 1 in a circumferential direction; The steel pipe reinforcing sleeve 3 is coaxially installed on the outside of the main steel pipe 1 and located between the branch steel pipe 2 and the main steel pipe 1.

[0030] It should be noted that the branch steel pipe 2 is used to extend the support of the main steel pipe 1.

[0031] The steel pipe reinforcing sleeve 3 is used to enhance the strength of the connection between the main steel pipe 1 and the branch steel pipe 2. All subsequent connections between the main steel pipe 1 and the branch steel pipe 2 are made on the steel pipe reinforcing sleeve 3. At this time, the steel pipe reinforcing sleeve 3 can first collect and transfer the dispersed load of the branch steel pipe 2 to itself, and then spread it evenly along the circumference of the main steel pipe 1, so that the stress on the main steel pipe 1 changes from multi-point concentrated stress to uniform stress over the whole area, which significantly improves the damage resistance of the main steel pipe 1.

[0032] Meanwhile, the steel pipe reinforcement sleeve 3 provides a unified connection reference surface for the branch steel pipe 2, avoiding the positioning deviation of the branch steel pipe 2 caused by insufficient accuracy of the outer wall of the main steel pipe 1.

[0033] See Figures 2 to 5 As shown, the outer side of the steel pipe reinforcing sleeve 3 is provided with several protrusions 3a that cooperate with the end of the branch steel pipe 2, and the outer wall of the protrusions 3a is in contact with the inner wall of the branch steel pipe 2.

[0034] It should be noted that the end of the branch steel pipe 2 is precisely positioned by cooperating with the protrusion 3a, which can limit the circumferential displacement and radial offset of the branch steel pipe 2, ensuring that all branch steel pipes 2 are evenly distributed around the axis of the main steel pipe 1, avoiding force eccentricity caused by installation deviation, and also improving the support strength of the end of the branch steel pipe 2.

[0035] Furthermore, the protrusion 3a changes the contact between the support pipe 2 and the reinforcing sleeve 3 from line contact to surface contact, thus expanding the contact area. The axial pressure of the support pipe 2 can be directly transmitted to the reinforcing sleeve 3 through the protrusion 3a, resulting in a clear load transfer path without additional slippage redundancy. Compared to a design without protrusions, the load-bearing efficiency is improved, and deformation at the end of the support pipe 2 due to excessive local pressure can be avoided.

[0036] See Figure 1 , Figure 3 and Figure 5 As shown, the outer side of the steel pipe reinforcing sleeve 3 is also provided with two clamping discs 3b that slide along its axial direction. The two clamping discs 3b are respectively positioned in a clamping manner above and below the support steel pipe 2.

[0037] It should be noted that the clamping plate 3b is used to clamp the support steel pipe 2. When it cooperates with the protrusion 3a, it can achieve double limiting of the support steel pipe 2 from the inside to the outside, ensuring the accuracy of the connection position between the support steel pipe 2 and the main steel pipe 1 and the stability of the connection between the two.

[0038] When the support pipe 2 is subjected to axial tensile force or vibration load, the clamping plate 3b can restrict its axial movement, prevent the fit between the support pipe 2 and the protrusion 3a from loosening, and ensure the continuity and stability of load transmission.

[0039] The clamping disc 3b can simultaneously clamp all the circumferentially distributed branch steel pipes 2 with a single tightening, ensuring that the axial fixing force of each branch steel pipe 2 is consistent and avoiding uneven stress caused by loose fixing of a single branch steel pipe 2. At the same time, the clamping disc 3b can collect and transfer the axial force of multiple branch steel pipes 2 to the reinforcing sleeve 3, further enhancing the overall stress stability of the node.

[0040] See Figure 1 and Figure 3 As shown, the steel pipe reinforcing sleeve 3 is equipped with a pressure-guiding support mechanism that can center and guide the force on the support steel pipe 2 and relieve the force.

[0041] It should be noted that the pressure guiding support mechanism can guide the force of the support steel pipe 2 to the main steel pipe 1 for pressure distribution and stress relief. Furthermore, this part of the force will be gradually relieved during the guiding process, thereby improving the overall support effect of the reinforced steel structure.

[0042] See Figure 2 and Figure 5 As shown, the steel pipe reinforcing sleeve 3 is connected to the main steel pipe 1 by a number of locking bolts 3c, and each locking bolt 3c passes through two oppositely arranged protrusions 3a along the main steel pipe 1.

[0043] It should be noted that after the steel pipe reinforcing sleeve 3 is sleeved with the main steel pipe 1, the wall thickness at the connection of the main steel pipe 1 is superimposed. With the addition of the protrusion 3a, the wall thickness is superimposed in three layers. Therefore, the locking bolt 3c passes through the area of ​​the three superimposed layers, and the main steel pipe 1 is not easy to break during subsequent pressure.

[0044] See Figure 2 and Figure 5 As shown, the two clamping discs 3b are fixedly installed above and below the support steel pipe 2 by a number of connecting bolts 3d. Each connecting bolt 3d vertically penetrates a protrusion 3a and the support steel pipe 2 inserted with the protrusion 3a. Each of the protrusions 3a has a rounded chamfer at its end.

[0045] It should be noted that the overlapping area of ​​the clamping disc 3b, the support steel pipe 2 and the protrusion 3a is a superposition of three layers of wall thickness. The perforation connection at this point can reduce damage to the three components during subsequent use.

[0046] The end of the protrusion 3a is provided with a rounded chamfer to facilitate the connection of the end of the support steel pipe 2 to it.

[0047] See Figure 3 As shown, the pressure-guiding support mechanism includes: Two frustum bases 4 are provided, and each of the two frustum bases 4 has a hole with the same outer diameter as the steel pipe reinforcing sleeve 3. 4The platforms are positioned opposite each other and coaxially sleeved on the outside of the steel pipe reinforcement sleeve 3; The two frustum bases 4 are respectively located on opposite sides of the two clamping disks 3b; The two truncated cone bases 4 are connected by a number of large hexagonal bolts 5.

[0048] It should be noted that the truncated cone base 4 is fitted on the outside of the steel pipe reinforcing sleeve 3 to further support the support steel pipe 2, and is also the main central pressure guiding component of the pressure guiding support mechanism.

[0049] The size of the hole in the truncated cone base 4 is precisely matched with the outer diameter of the main steel pipe. After being fitted and fixed, it forms a concentric positioning effect, which can ensure that the table surface of the truncated cone base 4 is perpendicular to the axis of the main steel pipe.

[0050] Meanwhile, the conical sidewalls of the truncated cone can help center the support steel pipe, preventing it from deviating from the design position during installation, thus ensuring that the force direction of the node is consistent with the design.

[0051] High-strength large hexagonal bolts 5 are used for connection during the connection process, which further enhances the stability of the truncated cone base 4 during use.

[0052] See Figure 1 and Figure 3 As shown, the support rod assembly 6 has a first end and a second end. The first end is rotatably connected to the frustum base 4, and the second end is rotatably connected to the adjacent support steel pipe 2.

[0053] It should be noted that the truncated cone base 4 and the support steel pipe 2 are connected by a support rod assembly 6 to form a solid triangular support, and the support distance of the steel pipe reinforcing sleeve 3 to the support steel pipe 2 is extended, which invisibly improves the strength of the support steel pipe 2 during use, so that the support steel pipe 2 can better bear the load during use.

[0054] See Figure 5 As shown, the support rod assembly 6 is a telescopic rod body, which includes an outer rod 6a and an inner sliding rod 6b, and a limiting bolt 6c is provided between the outer rod 6a and the inner sliding rod 6b.

[0055] It should be noted that the support rod assembly 6 is a telescopic rod, which allows it to adjust the support position according to the material of the support steel pipe 2 and the subsequent support force, so as to achieve targeted reinforcement and support for the use of the support steel pipe 2.

[0056] Furthermore, the support rod assembly 6 can be configured in the following embodiments, which can be selected and used according to the operating scenario and requirements: Example 1: Both the outer sleeve rod 6a and the inner sliding rod 6b are provided with through holes arranged along their axes and perpendicular to their axes; In the installed state, the limiting bolt 6c passes through the through hole on the outer outer rod 6a and the inner sliding rod 6b; Example 2: The outer sleeve rod 6a has a through hole perpendicular to its axis, and the inner sliding rod 6b has through holes arranged along its axis and perpendicular to its axis; In the installed state, the limiting bolt 6c passes through the through hole on the outer outer rod 6a and the inner sliding rod 6b; Example 3: The inner sliding rod 6b has a through hole perpendicular to its axis, and the outer rod 6a has through holes arranged along its axis and perpendicular to its axis. In the installed state, the limiting bolt 6c passes through the through hole on the outer outer rod 6a and the inner sliding rod 6b; See Figure 3 , Figure 5 , Figure 7 and Figure 8 As shown, each of the support rod assemblies 6 is provided with a collar 6d at the end away from the frustum base 4, and a spherical ring 6d1 is coaxially connected to the inner side of the collar 6d.

[0057] It should be noted that the support rod assembly 6 achieves the support connection of the support steel pipe 2 through the collar 6d and the spherical collar 6d1.

[0058] The spherical design of the spherical ring 6d1 can disperse the force of the guide ring 6d during support, and weaken the force transmitted from the support steel pipe 2 to the main steel pipe 1 along the support rod assembly 6.

[0059] See Figure 5 As shown, the diameter of the spherical ring 6d1 is the same as the inner diameter of the collar 6d, and the spherical ring 6d1 forms a groove with the same shape as the outer wall of the support steel pipe 2. The spherical ring 6d1 is fitted onto the outside of the support steel pipe 2 through a groove and is rotatably connected to the ring 6d.

[0060] It should be noted that the inner wall of the collar 6d fits the outer wall of the spherical ring 6d1, which expands the contact surface between the collar 6d and the spherical ring 6d1, so that the force can be evenly distributed during the transmission of force by the spherical ring 6d1, reducing the pressure on the support rod assembly 6.

[0061] See Figure 3 and Figure 7 As shown, each of the spherical ring sleeves 6d1 has two collars 6d that are in contact with its outer wall on its outer side. The outer side of the spherical ring sleeve 6d1 is provided with a rotating shaft passing through the two collars 6d along the direction of the transverse vertical support steel pipe. The collar 6d is arranged in a circular shape, and the two rings located outside the same spherical collar 6d1 can rotate relative to each other.

[0062] It should be noted that after the collar 6d and the spherical collar 6d1 work together, they can achieve multi-directional angle compensation, adaptive load transfer and installation fault tolerance on the basis of a stable connection between the support steel pipe 2 and the support rod assembly 6 in the steel structure, so as to better adapt to the dynamic deviation connection scenario between the support steel pipe 2 and the support rod assembly 6 in the steel structure.

[0063] When the support steel pipe 2 is under stress, the load is first transferred to the spherical ring 6d1 through the groove, and then evenly diffused to the ring 6d and the support rod assembly 6, so as to avoid the outer wall of the support steel pipe 2 from being dented or damaged due to excessive local compressive stress.

[0064] The groove of the spherical ring 6d1 is perfectly matched with the shape of the outer wall of the support steel pipe 2. After being fitted, it can form a close and wrapped effect, further preventing the support steel pipe 2 from sliding and shifting laterally at the connection node after being subjected to force.

[0065] The spherical ring 6d1 is coaxially connected with the collar 6d to ensure that the axis of the support steel pipe 2 is aligned with the center reference of the collar 6d and the support rod assembly 6, thus ensuring the consistency of the center line of load transmission and avoiding eccentric force.

[0066] The spherical ring 6d1 is rotatably connected to the collar 6d, and can rotate around the axis of the support steel pipe 2 to accommodate the circumferential angle deviation during the installation of the support steel pipe 2; The rotating shaft is horizontally perpendicular to the support steel pipe 2, and the two collars 6d can rotate relative to each other. During adjustment, the spherical collar 6d1 swings around the rotating shaft, which can achieve bidirectional angle compensation. Even if there is a slight angle deviation between the support steel pipe 2 and the support rod assembly 6 during installation, it can automatically adapt through swinging, avoiding additional bending moment at the node during subsequent use.

[0067] See Figure 6 As shown, both clamping discs 3b are provided with threaded holes that mate with large hexagonal bolts 5, and the large hexagonal bolts 5 pass through the threaded holes to connect the two frustum bases 4.

[0068] It should be noted that the large hexagonal bolt 5 passes through the threaded hole at the clamping plate 3b to connect the two frustum bases 4, thereby realizing the vertical connection and support of the clamping plate 3b and the frustum base 4.

[0069] The clamping plate 3b provides a rigid support reference for the frustum base 4, forming a symmetrical force-bearing structure. The load of the frustum base 4 is evenly transmitted to the clamping plate 3b through the large hexagonal bolts 5, preventing the clamping plate 3b from bearing an off-center load. The frustum base 4 can further distribute the load to the entire area of ​​the clamping plate 3b during the force-bearing process.

[0070] See Figures 3 to 6 As shown, the outer side of the steel pipe reinforcing sleeve 3 is provided with several guide grooves along its axial direction, and the inner wall of the hole of the truncated cone 4 is provided with several protrusions that cooperate with the guide grooves.

[0071] It should be noted that the truncated cone base 4 must be completely fixed after installation. The cooperation between the guide groove and the convex strip forms an anti-rotation engagement to prevent the truncated cone base 4 from rotating circumferentially relative to the steel pipe reinforcing sleeve 3. This prevents the truncated cone base 4 from moving axially due to the pressure of the support steel pipe 2 under subsequent stress, thus ensuring the stability of load transmission.

[0072] At the same time, ensure that the stress center of the truncated cone base 4 is consistent with the axis of the steel pipe reinforcement sleeve 3 and the support steel pipe 2, so as to avoid the load transfer eccentricity caused by radial offset, and thus avoid stress concentration at the edge of the truncated cone base 4.

[0073] This eliminates the risk of displacement when the truncated cone base 4 is under stress, ensuring that the reinforced steel structure with this stable connection achieves the goal of precise stress distribution.

[0074] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A reinforced steel structure with a secure connection, characterized in that, Include: Main steel pipe (1); Support steel pipe (2) is provided with several and several support steel pipe (2) is evenly distributed around the axis of main steel pipe (1); Steel pipe reinforcing sleeve (3) is coaxially arranged outside main steel pipe (1) and is located between support steel pipe (2) and main steel pipe (1); The outer side of the steel pipe reinforcing sleeve (3) is provided with a plurality of protrusions (3a) matched with the end of the support steel pipe (2), and the outer wall of the protrusion (3a) is in contact with the inner wall of the support steel pipe (2); The outer side of the steel pipe reinforcing sleeve (3) is also provided with two clamping discs (3b) sliding along the axial direction, and the two clamping discs (3b) are respectively arranged above and below the support steel pipe (2) in a clamping manner; The steel pipe reinforcing sleeve (3) is provided with a guide pressure support mechanism which can guide and unload the stress of the support steel pipe (2).

2. A robustly connected reinforced steel structure according to claim 1, wherein, The steel pipe reinforcing sleeve (3) and the main steel pipe (1) are connected by a plurality of locking bolts (3c), and each locking bolt (3c) passes through the two protrusions (3a) arranged oppositely along the main steel pipe (1).

3. A robustly connected reinforced steel structure according to claim 2, wherein, The two clamping discs (3b) are fixedly arranged above and below the support steel pipe (2) by a plurality of connecting bolts (3d), and each connecting bolt (3d) vertically penetrates a protrusion (3a) and the support steel pipe (2) inserted with the protrusion (3a); The end of each protrusion (3a) is provided with a circular arc chamfer.

4. A robustly connected reinforced steel structure according to any one of claims 1-3, characterized in that, The guide pressure support mechanism comprises: Two circular seats (4) are provided, and the two circular seats (4) are both provided with a hole with the same diameter as the steel pipe reinforcing sleeve (3), and the two circular seats (4) are coaxially arranged outside the steel pipe reinforcing sleeve (3) with their table surfaces arranged oppositely; Two circular seats (4) are located on the side away from each other of two clamping discs (3b); Two circular seats (4) are connected by a plurality of large hexagonal bolts (5); The support rod assembly (6) has a first end and a second end, the first end is rotatably connected with the circular seat (4), and the second end is rotatably connected with the adjacent support steel pipe (2).

5. A robustly connected reinforced steel structure according to claim 4, wherein, The support rod assembly (6) is a telescopic rod body, which comprises an outer sleeve rod (6a) and an inner sliding rod (6b), and a limiting bolt (6c) is arranged between the outer sleeve rod (6a) and the inner sliding rod (6b).

6. A robustly connected reinforced steel structure according to claim 5, wherein, The outer sleeve rod (6a) and the inner sliding rod (6b) are both provided with perforations arranged along the axis and perpendicular to the axis; Or, the outer sleeve rod (6a) is provided with perforations perpendicular to its axis, and the inner sliding rod (6b) is provided with perforations arranged along its axis and perpendicular to its axis. Or, the inner sliding rod (6b) is provided with perforations perpendicular to its axis, and the outer sleeve rod (6a) is provided with perforations arranged along its axis and perpendicular to its axis. In the installed state, the limiting bolt (6c) penetrates the perforations on the outer sleeve rod (6a) and the inner sliding rod (6b).

7. A robustly connected reinforced steel structure according to claim 6, wherein, The end of each support rod assembly (6) away from the circular seat (4) is provided with a sleeve ring (6d), and a spherical ring sleeve (6d1) is coaxially connected to the inner side of the sleeve ring (6d) The diameter of the spherical ring sleeve (6d1) is the same as the inner diameter of the sleeve ring (6d), and the spherical ring sleeve (6d1) forms a notch with the same shape as the outer wall of the support steel pipe (2); The spherical ring sleeve (6d1) is sleeved outside the support steel pipe (2) through the notch and is rotationally connected with the sleeve ring (6d).

8. A robustly connected reinforced steel structure according to claim 7, wherein, The outer side of each spherical ring sleeve (6d1) is sleeved with two sleeve rings (6d) in contact with the outer wall thereof, and the outer side of the spherical ring sleeve (6d1) is provided with a rotating shaft passing through the two sleeve rings (6d) in the direction perpendicular to the support steel pipe in the transverse direction. The sleeve ring (6d) is arranged in a circular ring shape, and the two circular rings on the outer side of the same spherical ring sleeve (6d1) can rotate relative to each other.

9. A robustly connected reinforced steel structure according to claim 7, wherein, Both of the clamping discs (3b) are provided with threaded holes matched with the large hexagonal bolts (5), and the large hexagonal bolts (5) pass through the threaded holes to connect the two circular seats (4).

10. A robustly connected reinforced steel structure according to claim 9, wherein, The outer side of the steel pipe reinforcing sleeve (3) is provided with a plurality of guide grooves in the axial direction thereof, and the inner wall of the hole of the circular seat (4) is provided with a plurality of protrusions matched with the guide grooves.

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