A method for post-installed installation of a special-shaped steel structure

Abstract

The application discloses a special-shaped steel structure post-solidification mounting method, which is applied to the technical field of building engineering construction and comprises a rod end hinged component and a post-solidification rod component. The rod end hinged component comprises a hinge end and a rigid short plate, the surface of the hinge end is provided with positioning bolts, the middle of the hinge end is hinged with the rigid short plate, the rigid short plate is inclined, a first pin shaft is arranged at the hinge position of the rigid short plate and the hinge end, the post-solidification rod component comprises a short beam and a connecting block three, the connecting block three is fixed with a left inclined web member after the hinge device is removed, the upper end of the left inclined web member is fixed on the lower end of a connecting block one, the right end of the short beam is connected with the left end of a left lower chord, the left end of the short beam is fixed on a core tube steel column, an angle steel is arranged at the fixing position of the left end of the short beam, and reinforcing ribs are arranged on the upper and lower sides of the short beam to reinforce the short beam. The mounting method reduces the influence of vertical deformation difference on the structure in the construction process and improves the mounting precision.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a method for post-consolidation installation of irregularly shaped steel structures. Background Technology

[0002] Super high-rise buildings, irregularly shaped steel structures, or steel-concrete composite structures not only experience highly complex stresses during their service life but also exhibit exceptionally complex deformation and stress patterns during construction. For steel frame-core tube structures with unique shapes, numerous diagonal truss structures exist, their tops strongly connected to the opposite giant truss or core tube via horizontal members, forming a "mega-structure." The stress patterns of the main steel truss components differ significantly before and after the overall structure is closed.

[0003] In the installation of the diagonal truss structure, the vertical components and corresponding floor slabs are constructed layer by layer in the conventional sequence, while the diagonal steel truss needs to be assembled and positioned first. After the overall structure is formed, the temporary supports are removed and gravity loads are applied. Due to the significant difference in vertical stiffness between the core tube and the truss, the difference in vertical deformation between the two results in large internal forces in the components connected to the core tube.

[0004] Therefore, a post-fixed installation method for irregular steel structures is provided, which adopts the method of first hinged and then fixed to reduce the cantilever state of the newly assembled truss, thereby reducing structural deformation and ensuring installation accuracy. Summary of the Invention

[0005] The purpose of this invention is to provide a post-consolidation installation method for irregular steel structures to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a method for post-fixed installation of an irregularly shaped steel structure, comprising a core tube steel column, temporary steel truss supports, a rod end hinge assembly, a beam end fixing assembly, a post-fixed member assembly, and a chord connection assembly. The core tube steel column is fixed to a shear wall, the rod end hinge assembly is installed on the core tube steel column, the rod end hinge assembly is connected to the beam end fixing assembly, and the rod end hinge assembly hinges the device to the core tube steel column.

[0007] According to the above technical solution, the end hinge assembly includes a hinge end and a rigid short plate. A positioning bolt is mounted on the surface of the hinge end. The middle of the hinge end is hinged to the rigid short plate, which is angled. A first pin is provided at the hinge point between the rigid short plate and the hinge end.

[0008] According to the above technical solution, the beam end fixing assembly includes a temporary fixing plate, a second pin is provided between the temporary fixing plate and the rigid short plate, the upper left chord is connected above the temporary fixing plate, and the lower left chord is connected below the temporary fixing plate.

[0009] According to the above technical solution, the steel truss fixing assembly includes connecting block one, connecting block two, connecting block three, and connecting block four. Connecting block one has a left upper chord member connected to its left side and a right upper chord member connected to its right side. A right diagonal web member is connected below connecting block one. The right diagonal web member is inclined, and its other side is fixed to the upper surface of connecting block two. Connecting block two is fixed to the right lower chord member. Connecting block three fixes the left lower chord member to a temporary fixing plate. Connecting block four connects the left lower chord member to the right lower chord member.

[0010] According to the above technical solution, the chord connection assembly includes positioning holes and a connecting plate. The connecting plate is fixed at the connection between the left and right lower chords. The connecting plate initially fixes the two chords together with connecting bolts. The positioning holes are located at the chord connection points and are fastened to the connecting block with high-strength bolts.

[0011] According to the above technical solution, the post-fixed member assembly includes a short beam and a connecting block three. After the hinge device is removed, the connecting block three is fixed to the left diagonal web member. The upper end of the left diagonal web member is fixed to the lower end of the connecting block one, forming a "K"-shaped fixation. The cross-section of the short beam is the same as that of the left lower chord. The right end of the short beam is connected to the left end of the left lower chord. The left end of the short beam is fixed to the core tube steel column. An angle steel is provided at the fixed point of the left end of the short beam. Reinforcing ribs are installed above and below the short beam for reinforcement. A top plate embedding end is fixed below the core tube steel column. Temporary supports are gradually set between the core tube steel column and the overall truss.

[0012] Compared with the prior art, the beneficial effects achieved by the present invention are: by setting up a rod end hinge assembly and a post-fixed rod assembly, the present invention can reduce the influence of vertical deformation difference on the internal forces of the structure and improve the installation accuracy by first hinge and then fix the steel truss end.

[0013] By gradually setting up temporary supports, the impact of the steel structure's self-weight on the initial internal forces of the structure during assembly is reduced. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the overall front structure of the present invention;

[0016] Figure 2 This is a schematic diagram showing the installation of the present invention;

[0017] Figure 3This is a schematic diagram of the truss connection of the present invention;

[0018] Figure 4 This is a schematic diagram of the installation process of the present invention;

[0019] In the diagram: 1. Core tube steel column; 2. Left upper chord; 3. Right upper chord; 4. Left lower chord; 5. Right lower chord; 6. Right diagonal web member; 7. Left diagonal web member; 8. Hinge end; 9. Positioning bolt; 10. Second pin; 11. Rigid short plate; 12. First pin; 13. Temporary fixing plate; 14. Connecting block one; 15. Connecting block two; 16. Connecting block three; 17. Connecting block four; 18. High-strength bolt; 19. Short beam; 20. Angle steel; 21. Reinforcing rib; 22. Connecting plate; 23. Connecting bolt; 24. Positioning hole; 25. Top plate embedded end; 26. Temporary support. Detailed Implementation

[0020] The following detailed, non-limiting description of the technical solution of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] Please see Figure 1-3 The present invention provides a technical solution: a method for post-fixed installation of an irregular steel structure, comprising a core tube steel column 1, a rod end hinge assembly, a beam end fixing assembly, a steel truss fixing assembly, a chord connection assembly, and a post-fixed member assembly. The core tube steel column 1 is fixed to a shear wall. The rod end hinge assembly is installed on the core tube steel column 1. The rod end hinge assembly and the beam end fixing assembly are connected. The rod end hinge assembly hinges the device to the core tube steel column 1. The beam end fixing assembly fixes the device to the steel truss as a whole. The steel truss fixing assembly is fixed at various connection points of the truss for reinforcement and connection.

[0022] The rod end hinge assembly includes a hinge end 8 and a rigid short plate 11. The hinge end 8 is fixed to the core tube steel column 1. A positioning bolt 9 is installed on the surface of the hinge end 8 to position it with the core tube steel column 1. The middle of the hinge end 8 is hinged to the rigid short plate 11. The rigid short plate 11 is inclined. A first pin 12 is provided at the hinge point between the rigid short plate 11 and the hinge end 8.

[0023] The beam end fixing assembly includes a temporary fixing plate 13, which is fixedly connected to the end of the rigid short plate 11. A second pin 10 is installed at the connection. The upper left chord 2 is connected to the upper part of the temporary fixing plate 13, and the lower left chord 4 is connected to the lower part of the temporary fixing plate 13 for temporary fixing of the upper and lower trusses.

[0024] The steel truss fixing assembly includes connecting block 14, connecting block 25, connecting block 36, and connecting block 47. The left side of connecting block 14 is connected to the left upper chord 2, and the right side of connecting block 14 is connected to the right upper chord 3. The lower part of connecting block 14 is connected to the right diagonal web member 6. The right diagonal web member 6 is diagonal, which makes the steel truss structure more stable. The other side of the right diagonal web member 6 is connected to connecting block 25. Connecting block 215 is fixed to the right lower chord 5. Connecting block 316 fixes the left lower chord 4 to the temporary fixing plate 13. Connecting block 417 connects the left lower chord 4 to the right lower chord 5.

[0025] The chord connection assembly includes a positioning hole 24 and a connecting plate 22. The connecting plate 22 is fixed at the connection between the left lower chord 4 and the right lower chord 5. The connecting plate 22 initially fixes the two chords on both sides by connecting bolts 23. The positioning hole 24 is opened at the chord connection and is positioned and aligned with the connecting block 4 17. Then it is tightened by high-strength bolts 18.

[0026] Connecting block 14, connecting block 25, connecting block 316 and connecting block 417 all adopt the same connection method as the chord member connection assembly. After the main truss structure is installed, the member end hinge assembly is removed and the post-fixed member assembly is installed.

[0027] The post-fixed member assembly includes a short beam 19 and a connecting block 3 16. After the hinge device is removed, the connecting block 3 16 is fixed to the left diagonal web member 7. The upper end of the left diagonal web member 7 is fixed to the lower end of the connecting block 1 14 to form a "K"-shaped fixation. The cross section of the short beam 19 is the same as that of the left lower chord member 4. The right end of the short beam 19 is connected to the left end of the left lower chord member 4. The left end of the short beam 19 is fixed to the core tube steel column 1 by angle steel 20. The short beam 19 is reinforced with reinforcing ribs 21 installed above and below it.

[0028] Please see Figure 4 The core tube steel column 1 is fixed with a top plate embedded end 25 below it, and temporary supports 26 are gradually set between the core tube steel column 1 and the overall truss.

[0029] Working principle:

[0030] The post-fixed installation of this type of irregular steel structure reduces the adverse effects of vertical deformation difference and ensures installation accuracy by first hinged and then fixed the fasteners adjacent to the core tube.

[0031] Generally, after the construction of the vertical core tube structure is completed, temporary supports 26 are gradually set on the fixed end 25 of the top plate, and the steel truss is assembled layer by layer. The gradual setting of point supports can reduce the influence of the steel structure's self-weight on the initial internal forces of the structure during the layer-by-layer assembly process. The temporary support points are selected at the locations corresponding to the basement columns. In this way, the amount of work for the temporary supports and the construction load of the top plate can be effectively controlled. The various parts are connected by chord connection components.

[0032] Specifically, after aligning the left lower chord 4 and the right lower chord 5, they are first fixed by the connecting plate 22 and then tightened by the connecting bolt 23. After aligning the connecting block 17 with the positioning hole 24, they are reinforced by the high-strength bolt 18. After assembling the lower chord, the left upper chord 2 and the right upper chord 3 are connected by the chord connecting assembly.

[0033] After the upper and lower chords are assembled, the right diagonal web member is assembled using connecting block 14 and connecting block 25. At the same time, a temporary fixing plate 13 is installed on the left side to temporarily replace the left diagonal web member 7 for vertical fixation.

[0034] After the overall assembly of the rigid truss is completed, the core tube steel column 1 is positioned to confirm the installation position of the hinge end 8. The hinge end 8 is fixed to the core tube steel column 1 by the positioning bolts 9. A rigid short plate 11 is installed between the hinge end 8 and the temporary fixing plate 13. The hinge end 8 and the rigid short plate 11 are hinged by the first pin 12. The temporary fixing plate 13 and the rigid short plate 11 are fixed by the second pin 10. At this time, all the main structural components of the steel frame are installed.

[0035] The above steps can achieve the initial installation of the main structure of the overall steel truss, avoiding the waste of high engineering costs caused by using full-span scaffolding for support.

[0036] After all the main structural components of the steel frame are installed, the temporary supports 26 are gradually removed to release some of the deformation of the main structure. Then, the floor slabs of each truss are poured. Finally, the remaining post-installed members and post-fixed members are installed and fixed.

[0037] Specifically, the temporary hinge device, including the hinge end 8, the rigid short plate 11 and the temporary fixing plate 13, is removed, and the left diagonal web member 7 of the truss is installed and fixed with the connecting block three 16 and the connecting block one 14.

[0038] Take out the short beam 19 and select a suitable length. One end is in contact with the core tube steel column 1, and the other end is connected to the left lower chord 4 through the connecting block 3 16. The same connection method as the connection of each chord is adopted. The short beam 19 is initially fixed on one side of the core tube through the connecting plate 20. At the same time, reinforcing ribs 21 are set on both the upper and lower sides for reinforcement.

[0039] After the lower chord is fixed in place, the upper chord is fixed in the same way, and the single truss section is in the shape of a "K". Then all the trusses are installed.

[0040] It should be noted that this scheme reduces the adverse effects of vertical deformation difference by using the method of hinge first and then fixation, thereby reducing structural deformation and improving installation accuracy. The temporary support frame should be set near the beam-column joint to facilitate force transfer, and the positioning and installation of the temporary hinged joint into a fixed joint must be accurate.

[0041] 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.

[0042] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for post-fixed installation of an irregularly shaped steel structure, comprising a core tube steel column (1), a rod end hinge assembly, a beam end fixing assembly, a steel truss fixing assembly, a chord connection assembly, and a post-fixed member assembly, characterized in that: The core tube steel column (1) is fixed on the shear wall. The rod end hinge assembly is installed on the core tube steel column (1). The rod end hinge assembly is connected to the beam end fixing assembly. The rod end hinge assembly hinges the steel truss to the core tube steel column (1). Temporary supports (26) are gradually set between the core tube steel column (1) and the overall truss. The rod end hinge assembly includes a hinge end (8) and a rigid short plate (11). The surface of the hinge end (8) is equipped with a positioning bolt (9). The middle of the hinge end (8) is hinged to the rigid short plate (11). The rigid short plate (11) is inclined. A first pin (12) is provided at the hinge point between the rigid short plate (11) and the hinge end (8). The beam end fixing assembly includes a temporary fixing plate (13), and a second pin (10) is provided between the temporary fixing plate (13) and the rigid short plate (11). The upper left chord (2) is connected above the temporary fixing plate (13), and the lower left chord (4) is connected below the temporary fixing plate (13). The steel truss fixing assembly includes a first connecting block (14), a second connecting block (15), a third connecting block (16), and a fourth connecting block (17). The left side of the first connecting block (14) is connected to the left upper chord (2), the right side of the first connecting block (14) is connected to the right upper chord (3), the lower part of the first connecting block (14) is connected to the right diagonal brace (6), the right diagonal brace (6) is diagonal, the other side of the right diagonal brace (6) is fixed to the upper surface of the second connecting block (15), the second connecting block (15) is fixed to the right lower chord (5), the third connecting block (16) fixes the left lower chord (4) to the temporary fixing plate (13), and the fourth connecting block (17) connects the left lower chord (4) to the right lower chord (5). The post-fixed rod assembly includes a short beam (19) and a connecting block three (16). The connecting block three (16) is fixed to the left diagonal brace (7) after the hinge device is removed. The upper end of the left diagonal brace (7) is fixed to the lower end of the connecting block one (14). The cross section of the short beam (19) is the same as the cross section of the left lower chord (4). The right end of the short beam (19) is connected to the left end of the left lower chord (4). The left end of the short beam (19) is fixed to the core tube steel column (1). An angle steel (20) is provided at the left end of the short beam (19). The short beam (19) is reinforced with reinforcing ribs (21) installed above and below. After the overall assembly of the steel truss is completed, the core tube steel column (1) is positioned to confirm the installation position of the hinge end (8). The hinge end (8) is fixed to the core tube steel column (1) by positioning bolts (9). A rigid short plate (11) is installed between the hinge end (8) and the temporary fixing plate (13). The hinge end (8) and the rigid short plate (11) are hinged by the first pin (12). The temporary fixing plate (13) and the rigid short plate (11) are fixed by the second pin (10). At this time, all the main structural components of the steel frame are installed. After all the main structural components of the steel frame are installed, the temporary supports (26) are gradually removed to release some of the deformation of the main structure. Then, the truss floor slabs of each floor are poured. Finally, the remaining post-installed members and post-fixed members are installed and fixed.

2. The method for post-fixation installation of an irregularly shaped steel structure according to claim 1, characterized in that: The chord connection assembly includes a positioning hole (24) and a connecting plate (22). The connecting plate (22) is fixed at the connection between the left lower chord (4) and the right lower chord (5). The connecting plate (22) initially fixes the two chords on both sides by connecting bolts (23). The positioning hole (24) is opened at the chord connection. The positioning hole (24) and the connecting block four (17) are fastened by high-strength bolts (18).

3. The method for post-fixation installation of an irregularly shaped steel structure according to claim 2, characterized in that: The post-consolidation truss is fixed in a "K" shape.

4. The method for post-fixation installation of an irregularly shaped steel structure according to claim 3, characterized in that: The core tube steel column (1) is fixed with a top plate embedded end (25) below it.

5. The method for post-fixation installation of an irregularly shaped steel structure according to claim 4, characterized in that: The temporary support (26) is removed after the main truss structure is installed.

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