Airfoil multi-element steel structural system and method of installation thereof

Abstract

The application discloses a wing-shaped multi-element steel structure system and a mounting method thereof, which comprises a frame system arranged on a ground foundation; a parallel load wing type large-span cantilever truss structure system arranged outside the frame system in a wing shape; and a Chinese character type shaped steel large-span special-shaped shell structure roof truss arranged between the frame system and the parallel load wing type large-span cantilever truss structure system and connected with the frame system and the parallel load wing type large-span cantilever truss structure system. The frame, the shell structure, the load wing type truss structure and other multi-element structures are combined to form a new structure with a large-span, open space and a unique shape, to provide a stable vertical support and a lateral force resisting system, the shell structure has a large space function, and compared with the truss structure, the shell structure has a small steel consumption and a low cost, and the load wing type truss structure has a unique shape similar to a wing and an eagle wing, can efficiently realize a huge column-free cantilever space and meets the demand of modern buildings for a large-span, open space and a free form.

Description

Technical Field

[0001] This invention relates to the field of steel structure construction, and in particular to a wing-shaped multi-element steel structure system and its installation method. Background Technology

[0002] Steel structure systems refer to building structure systems that use steel as the main load-bearing material and are constructed through welding, bolting, and other methods. Due to their advantages such as high strength, good plasticity and toughness, fast construction speed, and recyclability, they are widely used in industrial plants, high-rise buildings, large-span spatial structures (such as stadiums and airport terminals), bridges, and temporary or detachable buildings.

[0003] The existing technical problems are: traditional steel frame structures have a single shape, making it difficult to achieve large spaces and large cantilever shapes, and cannot meet the construction requirements of column-free cantilever spaces. At the same time, the amount of steel used is large, which increases the construction cost, and therefore needs to be improved. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide an airfoil-shaped multi-element steel structure system. The technical problem to be solved is that traditional steel frame structures have a single shape, making it difficult to achieve large spaces and large cantilever shapes, and cannot meet the construction requirements of column-free cantilever spaces. At the same time, traditional steel frame structures consume a large amount of steel, increasing construction costs.

[0005] The above-mentioned technical objective of this invention is achieved through the following technical solution: an airfoil multi-element steel structure system, comprising: The framework system is built on a ground foundation; A parallel wing-type large-span cantilever truss structure system is arranged in an airfoil shape around the upper part of the frame system; The large-span irregular shell structure roof truss with a U-shaped steel profile is set inside the parallel wing-type large-span cantilever truss structure system and connected to the frame system. The parallel wing-type large-span cantilever truss structure system includes wing-type trusses, spanned trusses, horizontal connecting members, horizontal roof truss beams, horizontal reinforcing diagonal members, horizontal connecting beams, and spanned reinforcing diagonal braces. The wing-type truss is mounted on the frame system; The wing-type truss is mounted on the wing-type truss and extends outward; The horizontal connecting rod is disposed between two adjacent wing-shaped trusses; The horizontal roof truss beams are mounted on the wing-type truss. The horizontal reinforcing diagonal braces are intersecting and arranged on adjacent horizontal roof truss beams. The horizontal connecting beam is located inside the wing-type truss and connects to the frame system; The wing-stretching brace is inclinedly positioned between the wing-mounted truss and the wing-mounted truss.

[0006] In a preferred embodiment, the present invention may be further configured such that the wing-type truss includes an inner chord of the wing-type truss, an outer chord of the wing-type truss, a horizontal web member of the wing-type truss, a diagonal web member of the wing-type truss, an inner cantilever beam, a lower chord of the wing-type truss, an upper chord of the wing-type truss, a straight web member of the wing-type truss, and a diagonal web member of the wing-type truss. The inner chord of the load-bearing truss and the outer chord of the load-bearing truss are arranged side by side; The horizontal web members of the load-bearing truss are horizontally arranged between the inner chord and the outer chord of the load-bearing truss; The diagonal web members of the load-bearing truss are inclinedly arranged between the inner chord and the outer chord of the load-bearing truss, and are connected to the horizontal web members of the load-bearing truss; The inner cantilever beam is horizontally positioned inside the inner chord of the load-bearing truss; The lower chord of the wing-carrying truss is inclined upward and located on the outside of the outer chord of the load-bearing truss; The upper chord of the wing-carrying truss is horizontally positioned above the inner chord of the bearing truss and is connected to the lower chord of the wing-carrying truss. The straight web members of the wing-carrying truss are vertically arranged between the lower chord and the upper chord of the wing-carrying truss; The diagonal web members of the wing-carrying truss are inclinedly arranged between the lower chord and the upper chord of the wing-carrying truss, and are connected to the straight web members of the wing-carrying truss.

[0007] In a preferred embodiment, the present invention may be further configured such that the wing-shaped truss includes a lower chord of the wing-shaped truss, an upper chord of the wing-shaped truss, a root reinforcing column, straight web members of the wing-shaped truss, diagonal web members of the wing-shaped truss, three-pronged web members of the wing-shaped truss, and connecting beams of the wing-shaped truss. The lower chord and the upper chord of the wing truss are arranged side by side, with the tail end of the lower chord bent upward and connected to the upper chord of the wing truss. The root reinforcement column is vertically installed between the lower chord of the wing truss and the upper chord of the wing truss at opposite ends; The straight web member of the wing truss is vertically arranged between the lower chord and the upper chord of the wing truss, which are close to each other. The diagonal web members of the wing truss are inclinedly arranged between the lower chord and the upper chord of the wing truss; The three-pronged web members of the wing truss are located at the middle of the lower chord and the upper chord of the wing truss; The winged truss connecting flat beam is horizontally arranged on the winged truss three-pronged web member, and both ends are connected to the root reinforcement column and the winged truss straight web member.

[0008] In a preferred example, the present invention can be further configured as follows: The frame system includes frame columns, frame beams, secondary beams, column bracings, roof truss beams, and roof horizontal bracings. The frame columns are vertically arranged, the frame beams are horizontally and hierarchically arranged on the frame columns, the secondary beams are horizontally arranged within the frame beams, the column bracings are obliquely arranged between the frame columns and the upper-layer frame beams, the roof truss beams are horizontally arranged at the upper ends of the frame columns, and the roof horizontal bracings are cross-arranged on the roof truss beams.

[0009] In a preferred example, the present invention can be further configured as follows: The I-shaped steel large-span special-shaped shell structure roof truss includes a first I-shaped cross-section main member, a second I-shaped cross-section main member, a third I-shaped cross-section main member, a fourth I-shaped cross-section main member, a fifth I-shaped cross-section main member, a sixth I-shaped cross-section main member, and secondary members between the main members. The first I-shaped cross-section main member, the second I-shaped cross-section main member, the third I-shaped cross-section main member, the fourth I-shaped cross-section main member, the fifth I-shaped cross-section main member, and the sixth I-shaped cross-section main member are arranged horizontally and sequentially. The secondary members between the main members are longitudinally arranged between the first I-shaped cross-section main member, the second I-shaped cross-section main member, the third I-shaped cross-section main member, the fourth I-shaped cross-section main member, the fifth I-shaped cross-section main member, and the sixth I-shaped cross-section main member.

[0010] In a preferred example, the present invention can be further configured as follows: The first I-shaped cross-section main member, the second I-shaped cross-section main member, the third I-shaped cross-section main member, the fourth I-shaped cross-section main member, the fifth I-shaped cross-section main member, and the sixth I-shaped cross-section main member each include a main member upper flange plate, a main member left web plate, a main member right web plate, a main member lower flange plate, a main member horizontal load-bearing plate, and a main member manhole cover plate; The head and tail of the main member upper flange plate, the main member left web plate, the main member right web plate, and the main member lower flange plate are connected end to end, and the cross-section is rectangular. The main member horizontal load-bearing plate is arranged within the space surrounded by the main member upper flange plate, the main member left web plate, the main member right web plate, and the main member lower flange plate. The main member manhole cover plates are arranged at intervals on the main member left web plate.

[0011] In a preferred example, the present invention can be further configured as follows: The secondary members between the main members include a secondary member upper flange plate, a secondary member left web plate, a secondary member right web plate, a secondary member lower flange plate, a secondary member horizontal load-bearing plate, and a secondary member manhole cover plate; The upper flange plate, left web plate, right web plate, and lower flange plate of the secondary member are connected end to end and have a rectangular cross-section. The horizontal load-bearing plate of the secondary member is located within the space enclosed by the upper flange plate, left web plate, right web plate, and lower flange plate of the secondary member. The handhole cover plate of the secondary member is located at both ends of the left web plate of the secondary member.

[0012] Another objective of this invention is to provide an installation method for an airfoil-shaped multi-element steel structure system. The technical problem to be solved is that traditional steel frame structures have a single shape, making it difficult to achieve large spaces and large cantilever shapes, and cannot meet the construction requirements of column-free cantilever spaces. At the same time, traditional steel frame structures consume a large amount of steel, increasing construction costs.

[0013] The above-mentioned technical objective of the present invention is achieved through the following technical solution: an installation method for an airfoil multi-element steel structure system, comprising the following steps: S1. Install the frame system, first install the frame columns, then install the first layer of frame beams, and weld or bolt them to the frame columns; install the secondary beams, and weld or bolt them to the frame beams, and so on, installing frame beams and secondary beams sequentially from bottom to top, and welding or bolting them; install the inter-column bracing, and weld it to the frame columns; install the roof truss beams, and weld them to the frame columns; install the roof truss horizontal bracing, and weld it to the frame columns. S2, install a parallel cantilevered wing-type large-span truss structure system. The first cantilevered wing truss is installed from the right end, welded to the fixed end at the bottom. The second cantilevered wing truss is then installed, welded to the fixed end at the bottom. From bottom to top, horizontal connecting members, horizontal connecting beams, horizontal roof truss beams, and horizontal reinforcing diagonal members are installed sequentially, and bolted or welded to the first and second cantilevered wing trusses respectively. The third cantilevered wing truss is then installed, welded to the fixed end at the bottom. From bottom to top... Install horizontal connecting rods, horizontal connecting beams, horizontal roof truss beams, and horizontal reinforcing diagonal braces sequentially, and bolt or weld them to the second and third wing-type trusses respectively; continue this process to complete the installation; install the wing-type truss and weld it to the main structure, and install horizontal connecting rods, horizontal connecting beams, wing-type reinforcing diagonal braces, horizontal roof truss beams, and horizontal reinforcing diagonal braces sequentially from bottom to top, and bolt or weld them to the last wing-type truss and the wing-type truss respectively; S3. Install the large-span special-shaped shell structure roof truss of the eye-shaped steel section, and at the same time install the main members of the first eye-shaped cross-section, the secondary members between the main members between the first eye-shaped cross-section main members and the support structure. The two ends of the first eye-shaped cross-section main members are welded to the support structure. One end of the secondary members between the main members is welded to the first eye-shaped cross-section main members, and the other end is welded to the support structure. Install the main members of the second eye-shaped cross-section, the secondary members between the main members between the first eye-shaped cross-section main members and the second eye-shaped cross-section main members. The two ends of the second eye-shaped cross-section main members are welded to the support structure. The two ends of the secondary members between the main members are respectively welded and connected to the first eye-shaped cross-section main members and the second eye-shaped cross-section main members. Install the main members of the third eye-shaped cross-section, the secondary members between the main members between the second eye-shaped cross-section main members and the third eye-shaped cross-section main members. The two ends of the third eye-shaped cross-section main members are welded to the support structure. The two ends of the secondary members between the main members are respectively welded and connected to the second eye-shaped cross-section main members and the third eye-shaped cross-section main members. At the same time, install the main members of the sixth eye-shaped cross-section, the secondary members between the main members between the sixth eye-shaped cross-section main members and the support structure. The two ends of the sixth eye-shaped cross-section main members are welded to the support structure. One end of the secondary members between the main members is welded to the sixth eye-shaped cross-section main members, and the other end is welded to the support structure. Install the main members of the fifth eye-shaped cross-section, the secondary members between the main members between the sixth eye-shaped cross-section main members and the fifth eye-shaped cross-section main members. The two ends of the fifth eye-shaped cross-section main members are welded to the support structure. The two ends of the secondary members between the main members are respectively welded and connected to the sixth eye-shaped cross-section main members and the fifth eye-shaped cross-section main members. Install the main members of the fourth eye-shaped cross-section, the secondary members between the main members between the fifth eye-shaped cross-section main members and the fourth eye-shaped cross-section main members. The two ends of the fourth eye-shaped cross-section main members are welded to the support structure. The two ends of the secondary members between the main members are respectively welded and connected to the fifth eye-shaped cross-section main members and the fourth eye-shaped cross-section main members. Install the secondary members between the main members between the third eye-shaped cross-section main members and the fourth eye-shaped cross-section main members, and the secondary members between the main members are respectively welded and connected to the third eye-shaped cross-section main members and the fourth eye-shaped cross-section main members.

[0014] In a preferred example of the present invention, it can be further configured as follows: The assembly steps of the winged truss are as follows: Assemble the inner chord members and outer chord members of the load-bearing truss on the upper tire, assemble the inclined web members of the load-bearing truss, and respectively weld and connect them to the inner chord members and outer chord members of the load-bearing truss; Assemble the horizontal web members of the load-bearing truss, and respectively weld and connect or bolt and connect them to the inner chord members and outer chord members of the load-bearing truss; Assemble the lower chord members of the winged truss and weld and connect them to the outer chord members of the load-bearing truss; Assemble the upper chord members of the winged truss and weld and connect them to the inner chord members of the load-bearing truss; Assemble the vertical web members of the winged truss and respectively weld and connect them to the lower chord members and upper chord members of the winged truss; Assemble the inclined web members of the winged truss and respectively weld and connect them to the upper chord members and lower chord members of the winged truss and the outer chord members of the load-bearing truss; Assemble the horizontal web members of the load-bearing truss and respectively bolt and connect them to the outer chord members of the load-bearing truss, the lower chord members of the winged truss, and the vertical web members of the winged truss at the intersection position. The assembling steps of the wing - type truss are as follows: Assemble the lower chord of the wing - type truss and the upper chord of the wing - type truss, and perform welded connection at the ends; Assemble the root reinforcement columns, and perform welded connections with the lower chord of the wing - type truss and the upper chord of the wing - type truss respectively; Assemble the straight web members, the diagonal web members, and the three - branch web members of the wing - type truss respectively, and perform welded connections with the lower chord of the wing - type truss and the upper chord of the wing - type truss respectively; Assemble the connecting flat beam of the wing - type truss, and perform welded connections with the root reinforcement columns, the three - branch web members of the wing - type truss, and the straight web members of the wing - type truss.

[0015] In a preferred example of the present invention, it can be further configured as follows: The assembling steps of the first I - shaped cross - section main member are as follows: Assemble the left web, the right web, and the two horizontal stress - bearing plates of the main member into a whole, and perform welding between the plates; Assemble the upper flange plate of the main member, and perform welded connections with the left web and the right web of the main member respectively; Assemble the lower flange plate of the main member, and perform welded connections with the left web and the right web of the main member respectively; Since the first I - shaped cross - section main member is too long, it is segmented in the factory, a handhole is set at the segmentation position, and it is assembled on - site. At the assembling position, the upper flange plate, the left web, the right web, the lower flange plate of the main member, and the two horizontal stress - bearing plates of the main member are butt - welded, and the two horizontal stress - bearing plates of the main member are welded through the handhole; Finally, install the handhole cover plate of the main member and perform welding; The assembling steps of the second I - shaped cross - section main member, the third I - shaped cross - section main member, the fourth I - shaped cross - section main member, the fifth I - shaped cross - section main member, and the sixth I - shaped cross - section main member are the same as those of the first I - shaped cross - section main member. The assembling steps of the secondary members between the main members are as follows: Assemble the left web, the right web, and the two horizontal stress - bearing plates of the secondary member into a whole, and perform welding between the plates; Assemble the upper flange plate of the secondary member, and perform welded connections with the left web and the right web of the secondary member respectively; Assemble the lower flange plate of the secondary member, and perform welded connections with the left web and the right web of the secondary member respectively. When installing the secondary members between the main members, after the upper flange plate, the left web, the right web, the lower flange plate of the secondary member, and the two horizontal stress - bearing plates of the secondary member are respectively butt - welded with the left web and the right web of the secondary member of the support structure or the first I - shaped cross - section main member, install the handhole cover plate of the secondary member and perform welding.

[0016] In summary, the present invention has the following beneficial effects: By setting up a multi - element steel structure system integrating a framework, a shell structure, and a wing - carrying truss, through the combination of multiple structures such as the framework, the shell structure, and the wing - carrying truss structure, a new structure that meets the requirements of large - span, open space, and unique shape is formed, providing a stable vertical support and lateral force resistance system. The shell structure has a large - space function, and compared with the truss structure, it has less steel consumption and lower cost. The wing - carrying truss embodies a unique shape similar to an airplane wing or an eagle wing, and at the same time can efficiently achieve a huge column - free cantilever space, meeting the comprehensive requirements of modern architecture for large - span, open space, and free form. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural view of an embodiment; Figure 2 is a schematic structural view of the framework system of an embodiment; Figure 3 is a schematic view of the connection relationship of the framework system of an embodiment; Figure 4 is a schematic structural view of the parallel wing - carrying large - span cantilever truss structure body of an embodiment; Figure 5 is a schematic view of the connection relationship of the parallel wing - carrying large - span cantilever truss structure body of an embodiment; Figure 6 is a schematic structural view of the wing - carrying truss and the wing - spreading truss of an embodiment; Figure 7 is a schematic structural view of the horizontal connecting beam and the wing - spreading strengthening diagonal brace of an embodiment; Figure 8 is a schematic structural view of the horizontal connecting beam of an embodiment; Figure 9 is a schematic structural view of the wing - carrying truss of an embodiment; Figure 10 is a schematic view of the connection relationship of the wing - carrying truss of an embodiment; Figure 11 is a schematic structural view of the wing - spreading truss of an embodiment; Figure 12 is a schematic structural view of the "mu" - shaped profiled steel large - span special - shaped shell structure roof truss of an embodiment; Figure 13 is a schematic structural view of the main member of the first "mu" - shaped cross - section of an embodiment; Figure 14 is a schematic structural view of the secondary member between the main members of an embodiment.

[0018] Reference Signs: 1. Frame system; 1.1 Frame column; 1.2 Frame beam; 1.3 Secondary beam; 1.4 Inter-column brace; 1.5 Roof truss beam; 1.6 Horizontal brace of roof truss; 2. Parallel load-wing type long-span cantilever truss structure system; 2.1 Load-wing type truss; 2.2 Wing-spread type truss; 2.3 Horizontal connecting member; 2.4 Horizontal roof truss beam member; 2.5 Horizontal strengthening diagonal member; 2.6 Horizontal connecting beam; 2.7 Wing-spread strengthening diagonal brace; 2.1.1 Inner chord member of load-bearing truss; 2.1.2 Outer chord member of load-bearing truss; 2.1.3 Horizontal web member of load-bearing truss; 2.1.4 Diagonal web member of load-bearing truss; 2.1.5 Inner cantilever beam; 2.1.6 Lower chord member of load-wing truss; 2.1.7 Upper chord member of load-wing truss; 2.1.8 Straight web member of load-wing truss; 2.1.9 Diagonal web member of load-wing truss; 2.2.1 Lower chord member of wing-spread truss; 2.2.2 Upper chord member of wing-spread truss; 2.2.3 Root strengthening column; 2.2.4 Straight web member of wing-spread truss; 2.2.5 Diagonal web member of wing-spread truss; 2.2.6 Three-fork web member of wing-spread truss; 2.2.7 Connecting flat beam of wing-spread truss; 3. Box-shaped steel large-span special-shaped shell structure roof truss; 3.1 First box-shaped cross-section main member; 3.2 Second box-shaped cross-section main member; 3.3 Third box-shaped cross-section main member; 3.4 Fourth box-shaped cross-section main member; 3.5 Fifth box-shaped cross-section main member; 3.6 Sixth box-shaped cross-section main member; 3.7 Secondary member between main members; 3.1.1 Upper flange plate of main member; 3.1.2 Left web plate of main member; 3.1.3 Right web plate of main member; 3.1.4 Lower flange plate of main member; 3.1.5 Horizontal stress-bearing plate of main member; 3.1.6 Manhole cover plate of main member; 3.7.1 Upper flange plate of secondary member; 3.7.2 Left web plate of secondary member; 3.7.3 Right web plate of secondary member; 3.7.4 Lower flange plate of secondary member; 3.7.5 Horizontal stress-bearing plate of secondary member; 3.7.6 Manhole cover plate of secondary member. Detailed implementation manners

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Embodiment 1: As Figure 1 shown, a wing-type multi-steel structure system includes a frame system 1, a parallel load-wing type long-span cantilever truss structure system 2, and a box-shaped steel large-span special-shaped shell structure roof truss 3.

[0021] As Figure 1 shown, the frame system 1 is arranged on the ground foundation, the parallel load-wing type long-span cantilever truss structure system 2 is arranged in a wing shape outside the frame system 1, and the box-shaped steel large-span special-shaped shell structure roof truss 3 is arranged between the frame system 1 and the parallel load-wing type long-span cantilever truss structure system 2 and is connected to the frame system 1 and the parallel load-wing type long-span cantilever truss structure system 2.

[0022] like Figure 2 , Figure 3 As shown, frame system 1 includes frame columns 1.1, frame beams 1.2, secondary beams 1.3, inter-column bracing 1.4, roof truss beams 1.5, and roof truss horizontal bracing 1.6.

[0023] like Figure 2 , Figure 3 As shown, frame column 1.1 is vertically installed, frame beam 1.2 is horizontally installed on frame column 1.1 in layers, secondary beam 1.3 is horizontally installed inside frame beam 1.2, and inter-column bracing 1.4 is inclinedly installed between frame column 1.1 and the upper frame beam 1.2. Roof truss beam 1.5 is horizontally installed at the upper end of frame column 1.1, and roof truss horizontal bracing 1.6 is cross-installed on roof truss beam 1.5.

[0024] like Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the parallel wing-type large-span cantilever truss structure system 2 includes a wing-type truss 2.1, a wing-type truss 2.2, horizontal connecting members 2.3, horizontal roof truss beams 2.4, horizontal reinforcing diagonal members 2.5, horizontal connecting beams 2.6, and wing-type reinforcing diagonal braces 2.7.

[0025] like Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the wing-type truss 2.1 is mounted on the frame system 1, and the spandrel truss 2.2 is mounted on the ground foundation and is arranged side by side with the wing-type truss 2.1.

[0026] like Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the horizontal connecting member 2.3, the horizontal roof truss beam 2.4, the horizontal reinforcing diagonal member 2.5, and the horizontal connecting beam 2.6 are arranged between two adjacent wing-type trusses 2.1 and between the wing-type truss 2.1 and the spandrel truss 2.2, and the spandrel reinforcing diagonal brace 2.7 is inclinedly arranged between the wing-type truss 2.1 and the spandrel truss 2.2.

[0027] like Figure 9 , Figure 10As shown, the wing-type truss 2.1 includes the inner chord of the load-bearing truss 2.1.1, the outer chord of the load-bearing truss 2.1.2, the horizontal web members of the load-bearing truss 2.1.3, the diagonal web members of the load-bearing truss 2.1.4, the inner cantilever beam 2.1.5, the lower chord of the wing-type truss 2.1.6, the upper chord of the wing-type truss 2.1.7, the straight web members of the wing-type truss 2.1.8, and the diagonal web members of the wing-type truss 2.1.9.

[0028] like Figure 9 , Figure 10 As shown, the inner chord 2.1.1 and outer chord 2.1.2 of the load-bearing truss are arranged side by side, and the horizontal web member 2.1.3 of the load-bearing truss is horizontally arranged between the inner chord 2.1.1 and the outer chord 2.1.2. The diagonal web member 2.1.4 of the load-bearing truss is inclinedly arranged between the inner chord 2.1.1 and the outer chord 2.1.2 of the load-bearing truss, and is connected to the horizontal web member 2.1.3 of the load-bearing truss.

[0029] like Figure 9 , Figure 10 As shown, the inner cantilever beam 2.1.5 is horizontally positioned inside the inner chord 2.1.1 of the load-bearing truss, and the lower chord 2.1.6 of the load-bearing wing truss is inclined upwards and positioned outside the outer chord 2.1.2 of the load-bearing truss.

[0030] like Figure 9 , Figure 10 As shown, the upper chord 2.1.7 of the wing-carrying truss is horizontally positioned above the inner chord 2.1.1 of the load-bearing truss and is connected to the lower chord 2.1.6 of the wing-carrying truss. The straight web member 2.1.8 of the wing-carrying truss is vertically positioned between the lower chord 2.1.6 and the upper chord 2.1.7 of the wing-carrying truss. The diagonal web member 2.1.9 of the wing-carrying truss is inclinedly positioned between the lower chord 2.1.6 and the upper chord 2.1.7 of the wing-carrying truss and is connected to the straight web member 2.1.8 of the wing-carrying truss.

[0031] like Figure 11 As shown, the wing-type truss 2.2 includes the lower chord of the wing-type truss 2.2.1, the upper chord of the wing-type truss 2.2.2, the root reinforcing column 2.2.3, the straight web member of the wing-type truss 2.2.4, the diagonal web member of the wing-type truss 2.2.5, the three-pronged web member of the wing-type truss 2.2.6, and the connecting beam of the wing-type truss 2.2.7.

[0032] like Figure 11 As shown, the lower chord 2.2.1 and the upper chord 2.2.2 of the wing truss are arranged side by side, one above the other. The tail end of the lower chord 2.2.1 is bent upward and connected to the upper chord 2.2.2. The root reinforcing column 2.2.3 is vertically arranged between the ends of the lower chord 2.2.1 and the upper chord 2.2.2 that are far apart from each other.

[0033] like Figure 11 As shown, the straight web member 2.2.4 of the winged truss is vertically arranged between the adjacent ends of the lower chord member 2.2.1 and the upper chord member 2.2.2 of the winged truss. The inclined web member 2.2.5 of the winged truss is inclined between the lower chord member 2.2.1 and the upper chord member 2.2.2 of the winged truss.

[0034] As Figure 11 shown, the three-fork web member 2.2.6 of the winged truss is arranged at the middle position between the lower chord member 2.2.1 and the upper chord member 2.2.2 of the winged truss. The connecting flat beam 2.2.7 of the winged truss is horizontally arranged on the three-fork web member 2.2.6 of the winged truss, and both ends are connected to the root strengthening column 2.2.3 and the straight web member 2.2.4 of the winged truss.

[0035] As Figure 12 shown, the large-span special-shaped shell structure roof truss 3 of the box-section steel includes the first main member 3.1 with a box section, the second main member 3.2 with a box section, the third main member 3.3 with a box section, the fourth main member 3.4 with a box section, the fifth main member 3.5 with a box section, the sixth main member 3.6 with a box section, and the secondary members 3.7 between the main members.

[0036] As Figure 12 shown, the first main member 3.1 with a box section, the second main member 3.2 with a box section, the third main member 3.3 with a box section, the fourth main member 3.4 with a box section, the fifth main member 3.5 with a box section, and the sixth main member 3.6 with a box section are arranged horizontally and successively.

[0037] As Figure 12 shown, the secondary members 3.7 between the main members are longitudinally arranged between the first main member 3.1 with a box section, the second main member 3.2 with a box section, the third main member 3.3 with a box section, the fourth main member 3.4 with a box section, the fifth main member 3.5 with a box section, and the sixth main member 3.6 with a box section.

[0038] As Figure 13 shown, the first main member 3.1 with a box section, the second main member 3.2 with a box section, the third main member 3.3 with a box section, the fourth main member 3.4 with a box section, the fifth main member 3.5 with a box section, and the sixth main member 3.6 with a box section all include the upper flange plate 3.1.1 of the main member, the left web plate 3.1.2 of the main member, the right web plate 3.1.3 of the main member, the lower flange plate 3.1.4 of the main member, the horizontal stress-bearing plate 3.1.5 of the main member, and the manhole cover plate 3.1.6 of the main member.

[0039] As Figure 13As shown, the upper flange plate 3.1.1, the left web plate 3.1.2, the right web plate 3.1.3, and the lower flange plate 3.1.4 of the main member are connected end to end, and their cross-sections are rectangular. The horizontal load-bearing plate 3.1.5 of the main member is set within the space enclosed by the upper flange plate 3.1.1, the left web plate 3.1.2, the right web plate 3.1.3, and the lower flange plate 3.1.4 of the main member. The handhole cover plate 3.1.6 of the main member is spaced apart on the left web plate 3.1.2 of the main member.

[0040] like Figure 14 As shown, the secondary member 3.7 between the main members includes the upper flange plate 3.7.1, the left web plate 3.7.2, the right web plate 3.7.3, the lower flange plate 3.7.4, the horizontal load-bearing plate 3.7.5, and the handhole cover plate 3.7.6.

[0041] like Figure 14 As shown, the upper flange plate 3.7.1, the left web plate 3.7.2, the right web plate 3.7.3, and the lower flange plate 3.7.4 of the secondary member are connected end to end, and the cross-section is rectangular.

[0042] like Figure 14 As shown, the secondary member horizontal load-bearing plate 3.7.5 is set in the space enclosed by the secondary member upper flange plate 3.7.1, the secondary member left web plate 3.7.2, the secondary member right web plate 3.7.3, and the secondary member lower flange plate 3.7.4, and the secondary member handhole cover plate 3.7.6 is set at both ends of the secondary member left web plate 3.7.2.

[0043] Example 2: An installation method for an airfoil-type multi-element steel structure system includes the following steps: S1, Install frame system 1. First, install frame column 1.1, then install the first-layer frame beam 1.2, and weld or bolt it to frame column 1.1; install secondary beam 1.3, and weld or bolt it to frame beam 1.2, and so on, installing frame beam 1.2 and secondary beam 1.3 sequentially from bottom to top, and welding or bolting them together; install inter-column bracing 1.4, and weld it to frame column 1.1; install roof truss beam 1.5, and weld it to frame column 1.1; install roof truss horizontal bracing 1.6, and weld it to frame column 1.1.

[0044] S2, install the parallel wing-type large-span cantilever truss structure system 2. Install the first wing-type truss 2.1 from the right end, welding its bottom to the fixed end. Install the second wing-type truss 2.1, welding its bottom to the fixed end. Install horizontal connecting members 2.3, horizontal connecting beams 2.6, horizontal roof truss beams 2.4, and horizontal reinforcing diagonals 2.5 sequentially from bottom to top, and bolt or weld them to the first and second wing-type trusses 2.1 respectively. Install the third wing-type truss 2.1, welding its bottom to the fixed end. Install water... Install horizontal connecting members 2.3, horizontal connecting beams 2.6, horizontal roof truss beams 2.4, and horizontal reinforcing braces 2.5, and bolt or weld them to the second and third wing-type trusses 2.1 respectively; continue this process to complete the installation; install the wing-type truss 2.2 and weld it to the main structure; install horizontal connecting members 2.3, horizontal connecting beams 2.6, wing-type reinforcing braces 2.7, horizontal roof truss beams 2.4, and horizontal reinforcing braces 2.5 in sequence from bottom to top, and bolt or weld them to the last wing-type truss 2.1 and wing-type truss 2.2 respectively.

[0045] The assembly steps for the wing-type truss 2.1 are as follows: Assemble the inner chord 2.1.1 and outer chord 2.1.2 of the load-bearing truss on the upper frame; assemble the diagonal web members 2.1.4 of the load-bearing truss, and weld them to the inner chord 2.1.1 and outer chord 2.1.2 of the load-bearing truss respectively; assemble the horizontal web members 2.1.3 of the load-bearing truss, and weld or bolt them to the inner chord 2.1.1 and outer chord 2.1.2 of the load-bearing truss respectively; assemble the lower chord 2.1.6 of the wing-type truss, and weld it to the outer chord 2.1.2 of the load-bearing truss; assemble the upper chord of the wing-type truss. 2.1.7, welded to the inner chord of the load-bearing truss 2.1.1; assemble the straight web members of the wing truss 2.1.8, which are welded to the lower chord of the wing truss 2.1.6 and the upper chord of the wing truss 2.1.7 respectively; assemble the diagonal web members of the wing truss 2.1.9, which are welded to the upper chord of the wing truss 2.1.7, the lower chord of the wing truss 2.1.6, and the outer chord of the load-bearing truss 2.1.2 respectively; assemble the horizontal web members of the load-bearing truss 2.1.3, which are bolted to the outer chord of the load-bearing truss 2.1.2, the lower chord of the wing truss 2.1.6, and the straight web members of the wing truss 2.1.8 at the intersections respectively.

[0046] The assembly steps for the wing-type truss 2.2 are as follows: Assemble the lower chord 2.2.1 and upper chord 2.2.2 of the wing-type truss, and weld the ends together; assemble the root reinforcing column 2.2.3, and weld it to the lower chord 2.2.1 and upper chord 2.2.2 of the wing-type truss respectively; assemble the straight web member 2.2.4, diagonal web member 2.2.5, and three-pronged web member 2.2.6 of the wing-type truss respectively, and weld them to the lower chord 2.2.1 and upper chord 2.2.2 of the wing-type truss respectively; assemble the connecting beam 2.2.7 of the wing-type truss, and weld it to the root reinforcing column 2.2.3, three-pronged web member 2.2.6, and straight web member 2.2.4 of the wing-type truss respectively.

[0047] S3. Install the large-span special-shaped shell structure roof truss 3 with a rectangular steel shape, and at the same time install the main members 3.1 with a first rectangular cross-section, and the secondary members 3.7 between the main members between the first rectangular cross-section main member 3.1 and the support structure. Weld the two ends of the first rectangular cross-section main member 3.1 to the support structure, weld one end of the secondary member 3.7 between the main members to the first rectangular cross-section main member 3.1, and weld the other end to the support structure; install the second rectangular cross-section main member 3.2 and the secondary member 3.7 between the main members between the first rectangular cross-section main member 3.1 and the second rectangular cross-section main member 3.2. Weld the two ends of the second rectangular cross-section main member 3.2 to the support structure, and weld the two ends of the secondary member 3.7 between the main members to the first rectangular cross-section main member 3.1 and the second rectangular cross-section main member 3.2 respectively; install the third rectangular cross-section main member 3.3 and the secondary member 3.7 between the main members between the second rectangular cross-section main member 3.2 and the third rectangular cross-section main member 3.3. Weld the two ends of the third rectangular cross-section main member 3.3 to the support structure, and weld the two ends of the secondary member 3.7 between the main members to the second rectangular cross-section main member 3.2 and the third rectangular cross-section main member 3.3 respectively; at the same time install the sixth rectangular cross-section main member 3.6 and the secondary member 3.7 between the main members between the sixth rectangular cross-section main member 3.6 and the support structure. Weld the two ends of the sixth rectangular cross-section main member 3.6 to the support structure, weld one end of the secondary member 3.7 between the main members to the sixth rectangular cross-section main member 3.6, and weld the other end to the support structure; install the fifth rectangular cross-section main member 3.5 and the secondary member 3.7 between the main members between the sixth rectangular cross-section main member 3.6 and the fifth rectangular cross-section main member 3.5. Weld the two ends of the fifth rectangular cross-section main member 3.5 to the support structure, and weld the two ends of the secondary member 3.7 between the main members to the sixth rectangular cross-section main member 3.6 and the fifth rectangular cross-section main member 3.5 respectively; install the fourth rectangular cross-section main member 3.4 and the secondary member 3.7 between the main members between the fifth rectangular cross-section main member 3.5 and the fourth rectangular cross-section main member 3.4. Weld the two ends of the fourth rectangular cross-section main member 3.4 to the support structure, and weld the two ends of the secondary member 3.7 between the main members to the fifth rectangular cross-section main member 3.5 and the fourth rectangular cross-section main member 3.4 respectively; install the secondary member 3.7 between the third rectangular cross-section main member 3.3 and the fourth rectangular cross-section main member 3.4, and weld the secondary member 3.7 to the third rectangular cross-section main member 3.3 and the fourth rectangular cross-section main member 3.4 respectively.

[0048] The assembly steps of the main member 3.1 with the first-eye-shaped cross-section are as follows: Assemble the left web 3.1.2, the right web 3.1.3, and the two horizontal stress-bearing plates 3.1.5 of the main member into one body, and weld between the plates. Assemble the upper flange plate 3.1.1 of the main member, and weld and connect it to the left web 3.1.2 and the right web 3.1.3 of the main member respectively. Assemble the lower flange plate 3.1.4 of the main member, and weld and connect it to the left web 3.1.2 and the right web 3.1.3 of the main member respectively. Since the main member 3.1 with the first-eye-shaped cross-section is too long, it is segmented in the factory, and manholes are set at the segmentation positions. It is assembled on-site. At the assembly position, the upper flange plate 3.1.1, the left web 3.1.2, the right web 3.1.3, the lower flange plate 3.1.4 of the main member, and the two horizontal stress-bearing plates 3.1.5 of the main member are butt-welded, and the two horizontal stress-bearing plates 3.1.5 of the main member are welded through the manholes. Finally, install the manhole cover plate 3.1.6 of the main member and weld it. The assembly steps of the main members 3.2, 3.3, 3.4, 3.5, and 3.6 with the second-eye-shaped, third-eye-shaped, fourth-eye-shaped, fifth-eye-shaped, and sixth-eye-shaped cross-sections are the same as those of the main member 3.1 with the first-eye-shaped cross-section.

[0049] The assembly steps of the secondary member 3.7 between the main members are as follows: Assemble the left web 3.7.2, the right web 3.7.3, and the two horizontal stress-bearing plates 3.7.5 of the secondary member into one body, and weld between the plates. Assemble the upper flange plate 3.7.1 of the secondary member, and weld and connect it to the left web 3.7.2 and the right web 3.7.3 of the secondary member respectively. Assemble the lower flange plate 3.7.4 of the secondary member, and weld and connect it to the left web 3.7.2 and the right web 3.7.3 of the secondary member respectively.

[0050] When installing the secondary member 3.7 between the main members, after the upper flange plate 3.7.1, the left web 3.7.2, the right web 3.7.3, the lower flange plate 3.7.4 of the secondary member, and the two horizontal stress-bearing plates 3.7.5 of the secondary member are butt-welded to the left web 3.7.2 and the right web 3.7.3 of the support structure or the secondary member of the main member 3.1 with the first-eye-shaped cross-section respectively, install the manhole cover plate 3.7.6 of the secondary member and weld it.

[0051] The specific embodiments are only explanations of the present invention, and they do not limit the present invention. Those skilled in the art can make modifications to the present embodiments without creative contributions according to needs after reading this specification, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A multi-element steel structure system with an airfoil shape, characterized in that: include: The framework system (1) is set on the ground foundation; A parallel wing-type large-span cantilever truss structure system (2) is arranged in an airfoil shape on the outside of the frame system (1); The large-span irregular shell structure roof truss (3) of the steel profile is set between the frame system (1) and the parallel wing-type large-span cantilever truss structure system (2), and is connected to the frame system (1) and the parallel wing-type large-span cantilever truss structure system (2); The parallel wing-type large-span cantilever truss structure system (2) includes a wing-type truss (2.1), a wing-type truss (2.2), horizontal connecting members (2.3), horizontal roof truss beams (2.4), horizontal reinforcing diagonal members (2.5), horizontal connecting beams (2.6), and wing-type reinforcing diagonal braces (2.7); The wing-type truss (2.1) is mounted on the frame system (1); The wing-type truss (2.2) is set on the ground foundation and is arranged side by side with the wing-type truss (2.1); The horizontal connecting member (2.3), the horizontal roof truss beam (2.4), the horizontal reinforcing diagonal member (2.5), and the horizontal connecting beam (2.6) are disposed between two adjacent wing-type trusses (2.1) and between the wing-type truss (2.1) and the spandrel truss (2.2); The wing-strengthened brace (2.7) is inclinedly disposed between the wing-type truss (2.1) and the wing-type truss (2.2).

2. The airfoil-shaped multi-element steel structure system according to claim 1, characterized in that: The wing-type truss (2.1) includes the inner chord of the load-bearing truss (2.1.1), the outer chord of the load-bearing truss (2.1.2), the horizontal web members of the load-bearing truss (2.1.3), the diagonal web members of the load-bearing truss (2.1.4), the inner cantilever beam (2.1.5), the lower chord of the wing-type truss (2.1.6), the upper chord of the wing-type truss (2.1.7), the straight web members of the wing-type truss (2.1.8), and the diagonal web members of the wing-type truss (2.1.9). The inner chord (2.1.1) and outer chord (2.1.2) of the load-bearing truss are arranged side by side; The horizontal web member (2.1.3) of the load-bearing truss is horizontally arranged between the inner chord member (2.1.1) and the outer chord member (2.1.2) of the load-bearing truss; The diagonal web member (2.1.4) of the load-bearing truss is inclinedly disposed between the inner chord member (2.1.1) and the outer chord member (2.1.2) of the load-bearing truss, and is connected to the horizontal web member (2.1.3) of the load-bearing truss; The inner cantilever beam (2.1.5) is horizontally positioned inside the inner chord (2.1.1) of the load-bearing truss; The lower chord (2.1.6) of the wing-bearing truss is inclined upward and located outside the outer chord (2.1.2) of the load-bearing truss; The upper chord (2.1.7) of the wing-carrying truss is horizontally arranged above the inner chord (2.1.1) of the bearing truss and is connected to the lower chord (2.1.6) of the wing-carrying truss; The straight web member (2.1.8) of the wing-carrying truss is vertically arranged between the lower chord member (2.1.6) and the upper chord member (2.1.7) of the wing-carrying truss; The diagonal web member (2.1.9) of the wing truss is inclinedly disposed between the lower chord (2.1.6) and the upper chord (2.1.7) of the wing truss, and is connected to the horizontal web member (2.1.3) of the load-bearing truss.

3. The airfoil-shaped multi-element steel structure system according to claim 2, characterized in that: The wing-type truss (2.2) includes a lower chord (2.2.1), an upper chord (2.2.2), a root reinforcing column (2.2.3), straight web members (2.2.4), diagonal web members (2.2.5), a three-pronged web member (2.2.6), and a connecting beam (2.2.7). The lower chord (2.2.1) and the upper chord (2.2.2) of the wing truss are arranged side by side, with the tail end of the lower chord (2.2.1) bent upward and connected to the upper chord (2.2.2). The root reinforcement column (2.2.3) is vertically installed between the lower chord (2.2.1) and the upper chord (2.2.2) of the wing truss, at their opposite ends; The straight web member (2.2.4) of the wing truss is vertically arranged between the lower chord member (2.2.1) and the upper chord member (2.2.2) of the wing truss, which are close to each other at their respective ends; The diagonal web member (2.2.5) of the wing truss is inclinedly disposed between the lower chord member (2.2.1) and the upper chord member (2.2.2) of the wing truss; The three-pronged web member (2.2.6) of the wing truss is located at the middle of the lower chord (2.2.1) and the upper chord (2.2.2) of the wing truss; The wing truss connecting beam (2.2.7) is horizontally arranged on the wing truss three-pronged web member (2.2.6), and its two ends are connected to the root reinforcing column (2.2.3) and the wing truss straight web member (2.2.4).

4. The airfoil-shaped multi-element steel structure system according to claim 1, characterized in that: The frame system (1) includes frame columns (1.1), frame beams (1.2), secondary beams (1.3), inter-column bracing (1.4), roof truss beams (1.5), and roof truss horizontal bracing (1.6). The frame columns (1.1) are vertically arranged, the frame beams (1.2) are horizontally arranged on the frame columns (1.1) in layers, the secondary beams (1.3) are horizontally arranged inside the frame beams (1.2), the inter-column bracing (1.4) is inclinedly arranged between the frame columns (1.1) and the upper frame beams (1.2), the roof truss beams (1.5) are horizontally arranged at the upper end of the frame columns (1.1), and the roof truss horizontal bracing (1.6) is cross-arranged on the roof truss beams (1.5).

5. The airfoil-shaped multi-element steel structure system according to claim 4, characterized in that: The I-shaped steel large-span special-shaped shell structure roof truss (3) includes a first main member with an I-shaped cross-section (3.1), a second main member with an I-shaped cross-section (3.2), a third main member with an I-shaped cross-section (3.3), a fourth main member with an I-shaped cross-section (3.4), a fifth main member with an I-shaped cross-section (3.5), a sixth main member with an I-shaped cross-section (3.6), and secondary members between the main members (3.7). The first main member with an I-shaped cross-section (3.1), the second main member with an I-shaped cross-section (3.2), the third main member with an I-shaped cross-section (3.3), the fourth main member with an I-shaped cross-section (3.4), the fifth main member with an I-shaped cross-section (3.5), and the sixth main member with an I-shaped cross-section (3.6) are arranged horizontally in sequence. The secondary members between the main members (3.7) are arranged longitudinally between the first main member with an I-shaped cross-section (3.1), the second main member with an I-shaped cross-section (3.2), the third main member with an I-shaped cross-section (3.3), the fourth main member with an I-shaped cross-section (3.4), the fifth main member with an I-shaped cross-section (3.5), and the sixth main member with an I-shaped cross-section (3.6).

6. The airfoil-shaped multi-element steel structure system according to claim 5, characterized in that: The first main member with an I-shaped cross-section (3.1), the second main member with an I-shaped cross-section (3.2), the third main member with an I-shaped cross-section (3.3), the fourth main member with an I-shaped cross-section (3.4), the fifth main member with an I-shaped cross-section (3.5), and the sixth main member with an I-shaped cross-section (3.6) each include an upper flange plate of the main member (3.1.1), a left web plate of the main member (3.1.2), a right web plate of the main member (3.1.3), a lower flange plate of the main member (3.1.4), a horizontal stress-bearing plate of the main member (3.1.5), and a manhole cover plate of the main member (3.1.6); The head and tail of the upper flange plate of the main member (3.1.1), the left web plate of the main member (3.1.2), the right web plate of the main member (3.1.3), and the lower flange plate of the main member (3.1.4) are connected end to end, and the cross-section is rectangular. The horizontal stress-bearing plate of the main member (3.1.5) is arranged in the space surrounded by the upper flange plate of the main member (3.1.1), the left web plate of the main member (3.1.2), the right web plate of the main member (3.1.3), and the lower flange plate of the main member (3.1.4). The manhole cover plate of the main member (3.1.6) is arranged at intervals on the left web plate of the main member (3.1.2).

7. The airfoil-shaped multi-element steel structure system according to claim 6, characterized in that: The secondary members between the main members (3.7) include an upper flange plate of the secondary member (3.7.1), a left web plate of the secondary member (3.7.2), a right web plate of the secondary member (3.7.3), a lower flange plate of the secondary member (3.7.4), a horizontal stress-bearing plate of the secondary member (3.7.5), and a manhole cover plate of the secondary member (3.7.6); The upper flange plate (3.7.1), left web plate (3.7.2), right web plate (3.7.3), and lower flange plate (3.7.4) of the secondary member are connected end to end and have a rectangular cross-section. The horizontal load-bearing plate (3.7.5) of the secondary member is located within the space enclosed by the upper flange plate (3.7.1), left web plate (3.7.2), right web plate (3.7.3), and lower flange plate (3.7.4) of the secondary member. The handhole cover plate (3.7.6) of the secondary member is located at both ends of the left web plate (3.7.2) of the secondary member.

8. An installation method for an airfoil-shaped multi-element steel structure system, characterized in that: Includes the following steps: S1, Install the frame system (1), first install the frame columns (1.1), then install the first-layer frame beams (1.2), and weld or bolt them to the frame columns (1.1); install the secondary beams (1.3), and weld or bolt them to the frame beams (1.2), and so on, install the frame beams (1.2) and secondary beams (1.3) sequentially from bottom to top, and weld or bolt them; install the inter-column bracing (1.4), and weld it to the frame columns (1.1); install the roof truss beams (1.5), and weld them to the frame columns (1.1); install the roof truss horizontal bracing (1.6), and weld it to the frame columns (1.1); S2, install the parallel wing-type large-span cantilever truss structure system (2), install the first wing-type truss (2.1) from the right end, and weld the bottom to the fixed end. Install the second wing-type truss (2.1), and weld the bottom to the fixed end. Install horizontal connecting members (2.3), horizontal connecting beams (2.6), horizontal roof truss beams (2.4), and horizontal reinforcing diagonal members (2.5) from bottom to top, and bolt or weld them to the first and second wing-type trusses (2.1) respectively. Install the third wing-type truss (2.1), and weld the bottom to the fixed end. Install horizontal connecting members from bottom to top. (2.3), horizontal connecting beam (2.6), horizontal roof truss beam (2.4), horizontal reinforcing diagonal brace (2.5), and bolt or weld them to the second and third wing-type trusses (2.1) respectively; and so on to complete the installation; install the wing-type truss (2.2), weld it to the main structure, and install the horizontal connecting members (2.3), horizontal connecting beam (2.6), wing-type reinforcing diagonal brace (2.7), horizontal roof truss beam (2.4), and horizontal reinforcing diagonal brace (2.5) from bottom to top, and bolt or weld them to the last wing-type truss (2.1) and wing-type truss (2.2) respectively; S3, install the large-span special-shaped shell structure roof truss (3) in the shape of a Chinese character "mu", and at the same time install the main members (3.1) with the cross-section of the first Chinese character "mu", and the secondary members (3.7) between the main members between the first main member (3.1) with the cross-section of the first Chinese character "mu" and the support structure. The two ends of the first main member (3.1) with the cross-section of the first Chinese character "mu" are welded to the support structure. One end of the secondary member (3.7) between the main members is welded to the first main member (3.1) with the cross-section of the first Chinese character "mu", and the other end is welded to the support structure; install the second main member (3.2) with the cross-section of the second Chinese character "mu", and the secondary member (3.7) between the main members between the first main member (3.1) with the cross-section of the first Chinese character "mu" and the second main member (3.2) with the cross-section of the second Chinese character "mu". The two ends of the second main member (3.2) with the cross-section of the second Chinese character "mu" are welded to the support structure. The two ends of the secondary member (3.7) between the main members are respectively welded and connected to the first main member (3.1) with the cross-section of the first Chinese character "mu" and the second main member (3.2) with the cross-section of the second Chinese character "mu"; install the third main member (3.3) with the cross-section of the third Chinese character "mu", and the secondary member (3.7) between the main members between the second main member (3.2) with the cross-section of the second Chinese character "mu" and the third main member (3.3) with the cross-section of the third Chinese character "mu". The two ends of the third main member (3.3) with the cross-section of the third Chinese character "mu" are welded to the support structure. The two ends of the secondary member (3.7) between the main members are respectively welded and connected to the second main member (3.2) with the cross-section of the second Chinese character "mu" and the third main member (3.3) with the cross-section of the third Chinese character "mu"; at the same time install the sixth main member (3.6) with the cross-section of the sixth Chinese character "mu", and the secondary member (3.7) between the main members between the sixth main member (3.6) with the cross-section of the sixth Chinese character "mu" and the support structure. The two ends of the sixth main member (3.6) with the cross-section of the sixth Chinese character "mu" are welded to the support structure. One end of the secondary member (3.7) between the main members is welded to the sixth main member (3.6) with the cross-section of the sixth Chinese character "mu", and the other end is welded to the support structure; install the fifth main member (3.5) with the cross-section of the fifth Chinese character "mu", and the secondary member (3.7) between the main members between the sixth main member (3.6) with the cross-section of the sixth Chinese character "mu" and the fifth main member (3.5) with the cross-section of the fifth Chinese character "mu". The two ends of the fifth main member (3.5) with the cross-section of the fifth Chinese character "mu" are welded to the support structure. The two ends of the secondary member (3.7) between the main members are respectively welded and connected to the sixth main member (3.6) with the cross-section of the sixth Chinese character "mu" and the fifth main member (3.5) with the cross-section of the fifth Chinese character "mu"; install the fourth main member (3.4) with the cross-section of the fourth Chinese character "mu", and the secondary member (3.7) between the main members between the fifth main member (3.5) with the cross-section of the fifth Chinese character "mu" and the fourth main member (3.4) with the cross-section of the fourth Chinese character "mu". The two ends of the fourth main member (3.4) with the cross-section of the fourth Chinese character "mu" are welded to the support structure. The two ends of the secondary member (3.7) between the main members are respectively welded and connected to the fifth main member (3.5) with the cross-section of the fifth Chinese character "mu" and the fourth main member (3.4) with the cross-section of the fourth Chinese character "mu"; install the secondary member (3.7) between the third main member (3.3) with the cross-section of the third Chinese character "mu" and the fourth main member (3.4) with the cross-section of the fourth Chinese character "mu", and the secondary member (3.7) is respectively welded and connected to the third main member (3.3) with the cross-section of the third Chinese character "mu" and the fourth main member (3.4) with the cross-section of the fourth Chinese character "mu".

9. The installation method of the airfoil multi-element steel structure system according to claim 8, characterized in that: Among which the load The assembly steps of the wing truss (2.1) are as follows: Assemble the inner chord (2.1.1) and outer chord (2.1.2) of the load-bearing truss on the upper frame; assemble the diagonal web members (2.1.4) of the load-bearing truss, and weld them to the inner chord (2.1.1) and outer chord (2.1.2) of the load-bearing truss respectively; assemble the horizontal web members (2.1.3) of the load-bearing truss, and weld or bolt them to the inner chord (2.1.1) and outer chord (2.1.2) of the load-bearing truss respectively; assemble the lower chord (2.1.6) of the wing truss, and weld it to the outer chord (2.1.2) of the load-bearing truss; assemble the upper chord (2.1) of the wing truss. .7), welded to the inner chord of the load-bearing truss (2.1.1); assemble the straight web members of the wing truss (2.1.8), which are welded to the lower chord of the wing truss (2.1.6) and the upper chord of the wing truss (2.1.7); assemble the diagonal web members of the wing truss (2.1.9), which are welded to the upper chord of the wing truss (2.1.7), the lower chord of the wing truss (2.1.6), and the outer chord of the load-bearing truss (2.1.2); assemble the horizontal web members of the load-bearing truss (2.1.3), which are bolted to the outer chord of the load-bearing truss (2.1.2), the lower chord of the wing truss (2.1.6), and the straight web members of the wing truss at the intersection (2.1.8); The assembly steps of the wing-type truss (2.2) are as follows: Assemble the lower chord (2.2.1) and upper chord (2.2.2) of the wing-type truss, and weld the ends together; Assemble the root reinforcing column (2.2.3), and weld it to the lower chord (2.2.1) and upper chord (2.2.2) of the wing-type truss respectively; Assemble the straight web members (2.2.4), diagonal web members (2.2.5), and triangular web members (2.2.6) of the wing-type truss respectively, and weld them to the lower chord (2.2.1) and upper chord (2.2.2) of the wing-type truss respectively; Assemble the connecting beam (2.2.7) of the wing-type truss, and weld it to the root reinforcing column (2.2.3), triangular web members (2.2.6), and straight web members (2.2.4) of the wing-type truss respectively.

10. The installation method of the airfoil multi-element steel structure system according to claim 9, characterized in that: The assembly steps of the first-section main member (3.1) are as follows: Assemble the left web plate (3.1.2), right web plate (3.1.3), and two horizontal load-bearing plates (3.1.5) of the main member into a single unit, and weld them together. Assemble the upper flange plate (3.1.1) of the main member and weld it to the left web plate (3.1.2) and right web plate (3.1.3) of the main member respectively. Assemble the lower flange plate (3.1.4) of the main member and weld it to the left web plate (3.1.2) and right web plate (3.1.3) of the main member respectively. The first-section main member (3.1) is too long and is segmented in the factory. Handholes are installed at the segmentation locations. Assemble the main members by butt welding the upper flange plate (3.1.1), left web plate (3.1.2), right web plate (3.1.3), lower flange plate (3.1.4), and two horizontal load-bearing plates (3.1.5) of the main members. The two horizontal load-bearing plates (3.1.5) of the main members are welded through the handholes. Finally, install the handhole cover plate (3.1.6) of the main members and weld it. The assembly steps of the main members with the second, third, fourth, fifth, and sixth cross-sections (3.2, 3.3, 3.4, 3.5, and 3.6 cross-sections are the same as those of the main members with the first cross-section (3.1). The assembly steps of the secondary members (3.7) between the main members are as follows: Assemble the left web plate (3.7.2), the right web plate (3.7.3), and the horizontal load-bearing plate (3.7.5) of the secondary members into one piece, and weld the plates together. Assemble the upper flange plate (3.7.1) of the secondary members and weld it to the left web plate (3.7.2) and the right web plate (3.7.3) of the secondary members respectively. Assemble the lower flange plate (3.7.4) of the secondary members and weld it to the left web plate (3.7.2) and the right web plate (3.7.3) of the secondary members respectively. When installing the secondary members (3.7) between the main members, the upper flange plate (3.7.1), the left web plate (3.7.2), the right web plate (3.7.3), the lower flange plate (3.7.4), and the two horizontal load-bearing plates (3.7.5) of the secondary members are respectively butt-welded to the left web plate (3.7.2) and the right web plate (3.7.3) of the secondary members of the supporting structure or the main member (3.1) with the first cross section. Then, the handhole cover plate (3.7.6) of the secondary members is installed and welded.

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