Space truss, building and construction method

Abstract

The invention relates to the technical field of building steel structure construction, in particular to a space truss, a building and a construction method.The space truss comprises a first structural layer, a second structural layer and a third structural layer. The first structural layer and the second structural layer are connected through the third structural layer so as to form a frame body structure with a trapezoidal section in the direction perpendicular to the length direction. The first structural layer comprises a first beam body, the first beam body is of a hollow beam body structure, the section, perpendicular to the length direction, of the first beam body is trapezoidal, and a rib plate piece is fixedly arranged in the first beam body so as to increase the rigidity of the first beam body. According to the space truss, the first beam body of the hollow beam body structure is adopted, and the rib plate pieces are fixedly arranged in the first beam body, so that the dead weight of the structure is reduced, the rigidity of the structure is remarkably improved, and the space truss has better performance when bearing a large-span structural load.

Description

Technical Field

[0001] The present application relates to the technical field of building steel structure construction, and in particular to a space truss, a building and a construction method. Background Art

[0002] In the context of the rapid development of current construction engineering technology, the technological progress and optimized design of steel truss beams, as the core components of large-span structures, have become the focus of industry attention. Although the existing technical stage of steel truss beams can better serve a variety of construction needs, they still face significant challenges.

[0003] Traditional steel truss beams mainly use round tubes or steel sections. Although they have strong bearing capacity, they are mainly limited to medium and small span applications. When faced with construction projects with spans of over 100 meters, such as stadiums and large airports, traditional designs often lead to a surge in the height of the beam section to meet the rigidity requirements, which not only severely compresses the internal usable space of the building, but also increases the cost burden due to the excessive deadweight, greatly reducing the economic efficiency. Summary of the invention

[0004] The purpose of the present application is to provide a space truss, a building and a construction method, wherein the space truss has a small deadweight, a low cost and a wide range of applications.

[0005] In order to achieve the above-mentioned purpose, in the first aspect, an embodiment of the present application provides a space truss, including a first structural layer, a second structural layer and a third structural layer. The first structural layer is a planar frame structure; the second structural layer is a planar frame structure, and is arranged in parallel with the first structural layer, and the width of the second structural layer is smaller than the width of the first structural layer; two third structural layers are arranged at intervals, and the first structural layer and the second structural layer are connected by two third structural layers to form a frame structure with a trapezoidal cross section perpendicular to the length direction; the first structural layer includes a first beam body, the first beam body is a hollow beam body structure, the first beam body has a trapezoidal cross section perpendicular to the length direction, and a rib plate is fixedly arranged in the first beam body to increase the rigidity of the first beam body.

[0006] The spatial truss provided in the embodiment of the present application adopts a first beam body with a hollow beam structure and fixes a rib plate inside the first beam body, which not only reduces the deadweight of the structure, but also significantly improves the rigidity of the structure, so that the spatial truss has better performance when bearing a large-span structural load. The cross-section of the spatial truss is trapezoidal, and the cross-section of the first beam body is trapezoidal, so the overall structure of the spatial truss is stable, and the first beam body is a hollow beam structure, and the deadweight of the first beam body is small, thereby reducing the deadweight of the spatial truss. Therefore, due to the stable structure and low deadweight of the spatial truss, the safety risk during the construction process is also reduced.

[0007] In one embodiment, the first beam body has a first side wall, a second side wall, a third side wall and a fourth side wall, and the four end faces of the first beam body are adjacent to each other end to form the first beam body having a trapezoidal cross-section perpendicular to the length direction, the first side wall and the third side wall are arranged in parallel, the second side wall and the fourth side wall are two oblique sides of the trapezoidal cross-section of the first beam body, and the third structural layer is fixedly connected to the third side wall; the rib plate member includes a first stiffening rib and a second stiffening rib, the first stiffening rib is parallel to the second side wall, and the second stiffening rib is parallel to the fourth side wall.

[0008] In one embodiment, the rib member further includes a third stiffening rib, and the third stiffening rib vertically connects the first side wall and the third side wall. And / or: the first side wall and the third side wall gradually decrease from both ends of the first beam body to the middle.

[0009] In one embodiment, the second structural layer includes a second beam body, the second beam body is parallel to the first beam body, the second beam body is a hollow beam and has a connecting side wall and a stepped side wall arranged oppositely, the connecting side wall is used to connect to the third structural layer, a rectangular groove body is arranged on the stepped side wall, so that the second beam body has a concave cross-section along a direction perpendicular to the length, the rectangular groove body is arranged so that the inner wall of the stepped side wall is recessed toward the connecting side wall and forms a stepped inner wall surface, at least one reinforcing rib is arranged on the stepped inner wall surface, and the reinforcing rib connects the connecting side wall and the stepped side wall.

[0010] In one embodiment, the wall thickness of the connecting side wall gradually decreases from the two ends to the middle of the second beam body; the wall thickness of the step side wall gradually decreases from the two ends to the middle of the second beam body.

[0011] In one embodiment, the second structural layer also includes a special-shaped stiffening plate, and one of the special-shaped stiffening plates is respectively arranged on the inner walls at both ends of the second beam body, and the special-shaped stiffening plate is perpendicular to the length direction of the second beam body, and the special-shaped stiffening plate is a concave plate structure adapted to the concave cross-section of the second beam body, and two protrusions of the concave plate structure of the special-shaped stiffening plate are provided with a groove body, and first bolt connecting plates are arranged on both sides of the special-shaped stiffening plate, and bolt holes are opened on the first bolt connecting plate; and / or; the second structural layer also includes an inner stiffening plate, and a plurality of inner stiffening plates are arranged on the inner wall of the middle part of the second beam body except for the two ends, and the inner stiffening plate is a concave plate structure adapted to the concave cross-section of the second beam body, and second bolt connecting plates are arranged on both sides of the inner stiffening plate, and bolt holes are opened on the second bolt connecting plate; and / or; polygonal grooves are opened on the stepped side walls at both ends of the second beam body, and the polygonal groove is opened at a position different from the stepped surface of the stepped side walls where the rectangular groove is opened.

[0012] In one embodiment, the third structural layer includes diagonal web members and vertical web members, the diagonal web members connect the first beam body and the second structural layer, the vertical web members connect the first beam body and the second structural layer, multiple diagonal web members and vertical web members are alternately arranged, and adjacent diagonal web members and vertical web members are connected end to end.

[0013] In one embodiment, the outer diameter and wall thickness of the diagonal web members gradually decrease from the two ends of the third structural layer to the middle; and / or; the cross-sectional area of ​​the vertical web members installed at the two ends of the first beam body is smaller than the cross-sectional area of ​​the vertical web members installed in the middle part of the first beam body; and / or; connecting plates are respectively provided on the first beam body and the second structural layer, and the diagonal web members are connected to the vertical web members through the connecting plates; and / or; on the first plane, the angle between the vertical web members and the first beam body and / or the second structural layer is α, wherein the first plane is a plane perpendicular to the first beam body and the second structural layer, and 66°≤α≤86°.

[0014] In a second aspect, an embodiment of the present application further provides a building, comprising a space truss as described in any of the above embodiments.

[0015] In a third aspect, an embodiment of the present application further provides a construction method, comprising:

[0016] Install the assembly tire frame.

[0017] The space truss described in any of the above embodiments is divided into three sections for assembly. When assembling the space truss in sections, the first structural layer and the second structural layer are firstly made into frame structures with three sections respectively, and each section of the first structural layer and the second structural layer are hoisted onto the assembly jig, and then each section of the first structural layer and the second structural layer are supported by temporary diagonal braces. The assembly jig and the temporary diagonal braces keep each section of the first structural layer and the second structural layer fixed, and then the assembly position of the third structural layer is located on the first structural layer and the second structural layer according to the lifted and laid out data, and then the sections of the second structural layer corresponding to each section of the first structural layer are connected through the third structural layer to form a space truss with three separately arranged sub-trusses.

[0018] Two herringbone end columns are installed, and the distance between the two herringbone end columns is the length of the space truss.

[0019] A temporary lattice support frame is set up, and two temporary lattice support frames are arranged at intervals between two of the herringbone end columns.

[0020] The three sub-trusses are sequentially hoisted onto the support structure composed of the herringbone end columns and the temporary lattice support frame, wherein the sub-truss located between two of the sub-trusses is hoisted last.

[0021] Symmetrically weld the interfaces between the three sub-trusses. Before welding, clean the area around the weld, check whether the welding rod meets the requirements, whether the welding current is adjusted properly, the welding speed must be kept constant, and the weld thickness and width must be uniform. After welding is completed, ultrasonic flaw detection must be passed. After passing the inspection, measure and record the elevation value of the node position of the third structural layer under the current working conditions.

[0022] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A structural schematic diagram of one embodiment of a space truss provided in an embodiment of the present application from one perspective;

[0025] Figure 2 A schematic structural diagram of two perspectives of one embodiment of a space truss provided in an embodiment of the present application;

[0026] Figure 3 A schematic structural diagram of a first beam from three perspectives of one embodiment of a space truss provided in an embodiment of the present application;

[0027] Figure 4 A schematic structural diagram of a second beam from three perspectives of one embodiment of a space truss provided in an embodiment of the present application;

[0028] Figure 5 A structural schematic diagram of a partial structure of one embodiment of a space truss provided in an embodiment of the present application from one perspective;

[0029] Figure 6 A structural schematic diagram of a vertical web member from one perspective of one embodiment of a space truss provided in an embodiment of the present application;

[0030] Figure 7 A schematic structural diagram of a diagonal web member from four perspectives of one embodiment of a space truss provided in an embodiment of the present application;

[0031] Figure 8 A schematic structural diagram of a part of the structure of one embodiment of a space truss provided in an embodiment of the present application from five perspectives;

[0032] Fig. 9 A schematic structural diagram of a part of the structure of one embodiment of a space truss provided in an embodiment of the present application from six perspectives;

[0033] Fig.10 A structural schematic diagram of a special-shaped stiffening plate from one perspective of one embodiment of a space truss provided in an embodiment of the present application;

[0034] Fig.11 A structural schematic diagram of an inner side stiffening plate of one embodiment of a space truss provided in an embodiment of the present application from one perspective;

[0035] Fig.12 A structural schematic diagram from one perspective of another embodiment of a space truss provided in an embodiment of the present application;

[0036] Fig.13 A schematic structural diagram of a part of the structure of one embodiment of a space truss provided in an embodiment of the present application from seven perspectives;

[0037] Fig.14 A schematic structural diagram of three perspectives of one embodiment of a space truss provided in an embodiment of the present application;

[0038] Fig.15A schematic structural diagram from two perspectives of another embodiment of a space truss provided in an embodiment of the present application;

[0039] Fig.16 A schematic structural diagram of another embodiment of a space truss provided in an embodiment of the present application from two perspectives;

[0040] Fig.17 A structural schematic diagram of an assembly step provided in an embodiment of the present application from one perspective;

[0041] Fig.18 A schematic diagram of an assembly process of a space truss provided in an embodiment of the present application from one perspective;

[0042] Fig.19 A schematic assembly diagram of a space truss from one perspective provided in an embodiment of the present application.

[0043] icon:

[0044] 100-first structural layer; 110-first beam body; 111-first side wall; 112-second side wall; 113-third side wall; 114-fourth side wall; 120-rib plate; 121-first stiffening rib; 122-second stiffening rib; 123-third stiffening rib;

[0045] 200-second structural layer; 210-second beam body; 212-connecting side wall; 214-stepped side wall; 216-rectangular trough body; 220-strengthening rib; 230-special-shaped stiffening plate; 240-inner stiffening plate; 260-polygonal groove; 270-first bolt connection plate; 280-second bolt connection plate;

[0046] 300-third structural layer; 310-diagonal web member; 320-vertical web member; 330-connecting plate;

[0047] 400-assembly frame; 500-herringbone end column; 600-temporary lattice support frame. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0049] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0050] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] The embodiments of the present application provide a space truss, a building and a construction method. The space truss has a small deadweight and high rigidity, a low production cost and a wide range of applications. The space truss can be applied to the building to meet the rigidity requirements of the building on a large-span structure, reduce the deadweight of the building and save costs. The construction method can be applied to the construction of the building to improve work efficiency and construction safety and reduce construction difficulty.

[0052] In a first aspect, an embodiment of the present application provides a space truss, such as Figure 1 As shown, the space truss includes a first structural layer 100 , a second structural layer 200 and a third structural layer 300 .

[0053] like Figure 1 and Figure 5 As shown, the first structural layer 100 is a planar frame structure.

[0054] like Figure 1 and Figure 5 As shown, the second structural layer 200 is a planar frame structure. Fig.14 As shown, the width of the second structure layer 200 is smaller than the width of the first structure layer 100 .

[0055] like Fig.14 As shown, two third structural layers 300 are arranged at intervals, and the first structural layer 100 and the second structural layer 200 are connected through the two third structural layers 300. Figure 2 As shown, the second structural layer 200 is arranged in parallel with the first structural layer 100 to form a frame structure having a trapezoidal cross section perpendicular to the length direction. Fig.14As shown, exemplarily, the two third structural layers 300 are two oblique sides of the trapezoidal cross section of the space truss, the first structural layer 100 is the long bottom side of the trapezoidal cross section of the space truss, and the second structural layer 200 is the short bottom side of the trapezoidal cross section of the space truss.

[0056] The design of the space truss takes into account the optimization of production costs. It adopts a flat frame structure and a simple connection method, which reduces the use of complex processing and expensive materials, thereby reducing the overall production cost.

[0057] like Figures 1 to 3 As shown, the first structural layer 100 includes a first beam body 110, the first beam body 110 is a hollow beam body structure, the cross section of the first beam body 110 along the vertical direction is a trapezoid, and a rib plate 120 is fixedly arranged inside the first beam body 110 to increase the rigidity of the first beam body 110. For example, as Figure 3 As shown, the rib plate 120 is fixedly arranged on the inner wall of the first beam body 110 to provide support for the interior of the first beam body 110 and improve the rigidity of the first beam body 110. By adopting the first beam body 110 of the hollow beam structure and fixing the rib plate 120 therein, the deadweight of the structure is reduced and the rigidity of the structure is significantly improved, so that the space truss has better performance when bearing the load of a large-span structure.

[0058] Space trusses have the characteristics of light weight, high rigidity and low production cost, so they have a wide range of applications and can be used in various construction scenarios that require large spans, light weight and high-strength structures, such as gymnasiums, exhibition halls, large warehouses, etc.

[0059] The cross-section of the space truss is trapezoidal, and the cross-section of the first beam 110 is trapezoidal, so the overall structure of the space truss is stable, and the first beam 110 is a hollow beam structure, and the first beam 110 has a small self-weight, thereby reducing the self-weight of the space truss. Therefore, since the structure of the space truss is stable and has a small self-weight, the safety risk during the construction process is also reduced.

[0060] like Figure 3 As shown, in one embodiment, the first beam body 110 has a first side wall 111 , a second side wall 112 , a third side wall 113 and a fourth side wall 114 .

[0061] Figure 3 The cross section of the first beam body 110 perpendicular to the length direction is shown, and the cross section is trapezoidal. The four end faces of the first beam body 110 are adjacent end to end to form the first beam body 110 having a trapezoidal cross section perpendicular to the length direction.

[0062] like Figure 3As shown, the first side wall 111 and the third side wall 113 are arranged in parallel, the second side wall 112 and the fourth side wall 114 are two oblique sides of the trapezoidal cross section of the first beam body 110 , and the third structural layer 300 is fixedly connected to the third side wall 113 .

[0063] like Figure 1 and Figure 3 As shown, when the first beam body 110 is in use, along the weight direction, the first side wall 111 is located above the third side wall 113. The first side wall 111 is used to directly bear the weight, and the second side wall 112 and the fourth side wall 114 are used to support the first side wall 111 and the third side wall 113. The first side wall 111, the second side wall 112, the third side wall 113 and the fourth side wall 114 form a trapezoidal hollow section, which can make full use of materials, improve the stability and bearing capacity of the upper flange, and enhance its torsion resistance.

[0064] The second side wall 112 and the fourth side wall 114, as two oblique sides of the trapezoidal cross section, not only play the role of connecting the first side wall 111 and the third side wall 113, but also constitute an effective force transmission path. They can evenly transmit the force on the first side wall 111 to the third side wall 113, and then transmit it to other parts of the entire structure through the third side wall 113, thereby achieving effective dispersion and transmission of force and improving the overall bearing capacity of the structure.

[0065] like Figure 3 As shown, the rib member 120 includes a first stiffening rib 121 and a second stiffening rib 122, wherein the first stiffening rib 121 is parallel to the second side wall 112, and the second stiffening rib 122 is parallel to the fourth side wall 114. Exemplarily, the first stiffening rib 121 is fixedly connected to the first side wall 111 and the third side wall 113 by welding, bolt connection or integral molding.

[0066] Exemplarily, the second stiffening rib 122 is fixedly connected to the first side wall 111 and the third side wall 113 by welding, bolt connection or integral molding.

[0067] The arrangement of the rib member 120, in particular the first stiffening rib 121 and the second stiffening rib 122 are parallel to the second side wall 112 and the fourth side wall 114, respectively, increases the stiffness of the area near the second side wall 112, and increases the stiffness of the area near the fourth side wall 114, providing additional support and stiffness for the first beam 110. This design helps to resist external loads such as bending and torsion, reduces deformation and vibration of the structure, and improves the stiffness and durability of the structure. The arrangement of the rib member 120 also increases the integrity and continuity of the structure, making the connection between the various parts more secure and enhancing the overall anti-destruction ability of the structure.

[0068] The first stiffening rib 121 , the second stiffening rib 122 , the second side wall 112 and the fourth side wall 114 transmit the force of the first side wall 111 to the third side wall 113 . There is a gap between the first stiffening rib 121 and the second side wall 112 , and there is a gap between the second stiffening rib 122 and the fourth side wall 114 , so as to enhance the stability of the third side wall 113 .

[0069] like Figure 3 As shown, in one embodiment, the rib member 120 further includes a third stiffening rib 123, which vertically connects the first side wall 111 and the third side wall 113. Exemplarily, the third stiffening rib 123 is fixedly connected to the first side wall 111 and the third side wall 113 by welding, bolt connection or integral molding.

[0070] As a vertical connector, the third stiffening rib 123 can significantly increase the bending stiffness of the first beam 110 in a direction perpendicular to the first side wall 111 and the third side wall 113. This means that when the structure is subjected to lateral or bending loads, it can more effectively resist deformation and maintain the shape and stability of the structure. The addition of the third stiffening rib 123 allows the entire beam to form a more stable frame in structure. This frame effect can enhance the overall stiffness and stability of the structure and improve the bearing capacity of the structure. As a vertical connector, the third stiffening rib 123 can more effectively transfer the load on the first side wall 111 to the third side wall 113, thereby achieving load dispersion. This helps to reduce stress concentration in the structure and improve the stability of the structure. Since the third stiffening rib 123 can enhance the stiffness and stability of the structure and optimize the force transmission path, it can reduce fatigue damage and plastic deformation of the structure during the force process, thereby improving the durability of the structure.

[0071] like Figure 2 As shown, in one embodiment, the thickness of the first side wall 111 and the third side wall 113 gradually decreases from both ends to the middle of the first beam body.

[0072] For example, along the length direction of the first beam body 110, the first beam body 110 is divided into three sections, the thickness of the first side wall 111 and the second side wall 112 in the first section is 45 mm, the thickness of the first side wall 111 and the second side wall 112 in the second section is 50 mm, and the thickness of the first side wall 111 and the second side wall 112 in the third section is 45 mm.

[0073] For another example, along the length direction of the first beam body 110, the first beam body 110 is divided into seven sections, the thickness of the first side wall 111 and the second side wall 112 in the first section is 30 mm, the thickness of the first side wall 111 and the second side wall 112 in the second section is 40 mm, the thickness of the first side wall 111 and the second side wall 112 in the third section is 45 mm, the thickness of the first side wall 111 and the second side wall 112 in the fourth section is 50 mm, the thickness of the first side wall 111 and the second side wall 112 in the fifth section is 45 mm, the thickness of the first side wall 111 and the second side wall 112 in the sixth section is 40 mm, and the thickness of the first side wall 111 and the second side wall 112 in the seventh section is 30 mm. Of course, the thickness of the first side wall 111 located at both ends of the first beam body 110 can be the same or different. For example, the thickness of the first side wall 111 located at one end of the first beam body 110 is 30 mm, and the thickness of the first side wall 111 located at the other end of the first beam body 110 is 32 mm. Similarly, the thickness of the second side wall 112 can also be set in this way.

[0074] The gradually increasing thickness part can bear greater stress and load, especially in the area where the stress is concentrated. This design can effectively improve the bearing capacity of the structure. The gradually decreasing thickness part can reduce the weight of the structure and save costs while ensuring sufficient strength.

[0075] The thickness gradient design can avoid excessive concentration of stress at a certain point or area, thereby reducing the risk of structural damage. Uniform stress distribution helps reduce fatigue damage and improve the durability and service life of the structure.

[0076] like Figure 1 and Figure 2 As shown, in one embodiment, the second structural layer 200 includes a second beam body 210 , and the second beam body 210 is parallel to the first beam body 110 .

[0077] like Figure 4 As shown, the second beam body 210 is a hollow beam and has a connecting side wall 212 and a stepped side wall 214 that are relatively arranged. The connecting side wall 212 is used to connect the third structural layer 300. The stepped side wall 214 is provided with a rectangular groove body 216 so that the second beam body 210 has a concave cross-section along a direction perpendicular to the length. The rectangular groove body 216 makes the inner wall of the stepped side wall 214 concave toward the connecting side wall 212 and forms a stepped inner wall surface. At least one reinforcing rib 220 is provided on the stepped inner wall surface, and the reinforcing rib 220 is connected to the connecting side wall 212 and the stepped side wall 214.

[0078] Exemplarily, one reinforcing rib 220 is provided. However, in another embodiment, Figure 4As shown, two reinforcing ribs 220 are provided, and the two reinforcing ribs 220 are arranged at intervals. Of course, in some other embodiments, three or four reinforcing ribs 220 may also be provided, and the reinforcing ribs 220 are arranged at intervals.

[0079] The reinforcing rib 220 is connected to the connecting side wall 212 and the stepped side wall 214, effectively enhancing the strength and rigidity of the second beam body 210. This can not only improve the bearing capacity of the structure when subjected to external forces, but also reduce structural deformation and maintain structural stability.

[0080] The second beam body 210 is designed as a hollow beam, which can reduce the weight of the structure while ensuring strength, thereby achieving a lightweight design. At the same time, the hollow structure also helps to improve the torsional rigidity of the structure and enhance the overall stability. Therefore, the second beam body 210 is configured as a hollow beam, which can achieve greater rigidity with as little material as possible.

[0081] The rectangular groove body 216 is arranged so that the inner wall of the stepped side wall 214 is recessed toward the connecting side wall 212 to form a stepped inner wall surface. Fig.15 and Fig.16 As shown, a rectangular groove is provided on the second beam body 210 so that the second beam body 210 can better adapt to the herringbone end column 500 through the rectangular groove, making it more convenient to install and fix the second beam body 210.

[0082] The reinforcing ribs 220 not only enhance the structural strength and rigidity, but also effectively disperse stress and avoid structural damage caused by local overload.

[0083] Metal components have the characteristics of thermal expansion and contraction. The hollow structure of the second beam body 210 helps to alleviate the impact of temperature changes on the structural dimensions and improve the stability of the structure.

[0084] In one embodiment, the wall thickness of the connecting side wall 212 gradually decreases from both ends to the middle of the second beam body 210 .

[0085] The wall thickness of the stepped side wall 214 gradually decreases from both ends to the middle of the second beam body 210 .

[0086] For example, along the length direction of the second beam body 210, the second beam body 210 is evenly divided into three sections, the wall thickness of the connecting side wall 212 and the wall thickness of the step side wall 214 in the first section is 45 mm, the wall thickness of the connecting side wall 212 and the wall thickness of the step side wall 214 in the second section is 50 mm, and the wall thickness of the connecting side wall 212 and the wall thickness of the step side wall 214 in the third section is 45 mm.

[0087] For another example, along the length direction of the second beam body 210, the second beam body 210 is evenly divided into seven sections, the wall thickness of the connecting side wall 212 and the wall thickness of the step side wall 214 at the first section is 30 mm, the wall thickness of the connecting side wall 212 and the wall thickness of the step side wall 214 at the second section is 40 mm, the wall thickness of the connecting side wall 212 and the wall thickness of the step side wall 214 at the third section is 45 mm, the wall thickness of the connecting side wall 212 and the wall thickness of the step side wall 214 at the fourth section is 50 mm, the wall thickness of the connecting side wall 212 and the wall thickness of the step side wall 214 at the fifth section is 45 mm, the wall thickness of the connecting side wall 212 and the wall thickness of the step side wall 214 at the sixth section is 40 mm, and the wall thickness of the connecting side wall 212 and the wall thickness of the step side wall 214 at the seventh section is 30 mm.

[0088] Of course, the thickness of the connecting side wall 212 located at the first section and the seventh section can be equal or different. For example, the thickness of the connecting side wall 212 located at the first section is 30 mm, and the thickness of the connecting side wall 212 located at the seventh section is 32 mm. Similarly, the thickness of the step side wall 214 can also be set in this way.

[0089] The part with gradually increasing wall thickness can bear greater stress and load, especially in the area with concentrated stress. This design can effectively improve the bearing capacity of the mechanical structure. The part with gradually decreasing wall thickness can reduce the weight of the structure while ensuring sufficient strength, avoiding unnecessary material waste.

[0090] By changing the wall thickness, the rigidity and strength of the second beam body 210 at different positions can be adjusted to make the entire structure more balanced and stable. This design helps to resist external impact and vibration and improve the durability of the mechanical structure.

[0091] like Figure 5 As shown, in one embodiment, the second structural layer 200 further includes a special-shaped stiffening plate 230 , and a special-shaped stiffening plate 230 is respectively disposed on the inner walls at both ends of the second beam body 210 , and the special-shaped stiffening plate 230 is perpendicular to the length direction of the second beam body 210 .

[0092] The special-shaped stiffening plates 230 serve as inner wall supports at both ends of the second beam body 210, effectively increasing the strength and rigidity of the beam body at these key locations. This design is particularly suitable for areas that need to withstand large bending moments and shear forces, and helps prevent structural deformation and damage.

[0093] The concave plate structure of the special-shaped stiffening plate 230 is matched with the concave cross-section of the second beam body 210, which can better transmit and disperse stress. This design helps to reduce stress concentration and improve the overall stability and durability of the structure.

[0094] like Fig.10As shown, the special-shaped stiffening plate 230 is a concave plate structure that is compatible with the concave cross-section of the second beam body 210, and grooves are provided at two protrusions of the concave plate structure of the special-shaped stiffening plate 230. When installing the space truss, a bolt is installed at the step side wall 214. The bolt passes through the step side wall 214 and abuts against the groove. The groove is used to limit the bolt and increase the contact area between the bolt and the special-shaped stiffening plate 230, thereby improving the connection strength of the bolt.

[0095] First bolt connection plates 270 are provided on both sides of the special-shaped stiffening plate 230 , and bolt holes are provided on the first bolt connection plates 270 .

[0096] Adjacent space trusses are fixedly connected via the first bolt connection plate 270. For example, bolts are provided at the bolt holes of the first bolt connection plate 270 of one space truss, and the bolts are connected to the bolt holes of the first bolt connection plate 270 of another space truss to fix the two adjacent space trusses.

[0097] like Fig.11 and Fig.12 As shown, in one embodiment, the second structural layer 200 further includes an inner stiffening plate 240, and a plurality of inner stiffening plates 240 are arranged at intervals on the inner wall of the middle part of the second beam body 210 except for the two ends. Exemplarily, three inner stiffening plates 240 are arranged. In another embodiment, five inner stiffening plates 240 are arranged. In another embodiment, six inner stiffening plates 240 are arranged.

[0098] The inner stiffening plate 240 is a concave plate structure adapted to the concave cross-section of the second beam body 210 , and second bolt connection plates 280 are provided on both sides of the inner stiffening plate 240 , and bolt holes are opened on the second bolt connection plates 280 .

[0099] Adjacent space trusses are fixedly connected by the second bolt connection plate 280. For example, a bolt is provided at the bolt hole of the second bolt connection plate 280 of one space truss, and the bolt is connected to the bolt hole of the second bolt connection plate 280 of another space truss, so that two adjacent space trusses are fixedly connected. The second bolt connection plate 280 and the bolt hole design thereon provide a simple and reliable connection method for adjacent space trusses. The bolt connection is not only easy to implement, but also can withstand large tension and shear forces, ensuring the stability and safety of the structure in long-term use.

[0100] The inner stiffening plate 240 is a supporting element for the middle inner wall of the second beam 210. Its concave plate structure closely matches the concave cross-section of the beam, effectively enhancing the strength and rigidity of the beam in these key areas. This design can significantly improve the bearing capacity of the entire mechanical structure, especially when dealing with complex stress and heavy load environments.

[0101] The spaced arrangement of the plurality of inner stiffening plates 240 and their close connection with the second beam body 210 together form a stable support system. This not only improves the stability of a single beam body, but also connects the entire structure into a more stable whole through the bolt connection of adjacent space trusses, effectively resisting external impact and vibration.

[0102] like Fig.13 As shown, in one embodiment, a polygonal groove 260 is formed on the stepped sidewalls 214 at both ends of the second beam body 210 , and the polygonal groove 260 is formed on a different step surface of the stepped sidewall 214 than the rectangular groove body 216 .

[0103] The polygonal groove 260 is, for example, a triangular groove, a quadrilateral groove, a pentagonal groove, or a hexagonal groove.

[0104] The polygonal groove 260 can be used as an interface for connecting with other components (such as the herringbone end column 500 when installing the space truss), such as bolt connection or welding connection. This design can improve the strength and stability of the connection and ensure the overall coordination of the structure when subjected to stress.

[0105] The inner wall of the polygonal groove 260 locally strengthens the stepped side wall 214. This strengthening helps to improve the load-bearing capacity of the beam at these key locations, especially when subjected to shear force and torque.

[0106] like Figure 1 As shown, in one embodiment, the third structural layer 300 includes a diagonal web member 310 and a vertical web member 320, the diagonal web member 310 connects the first beam body 110 and the second structural layer 200, the vertical web member 320 connects the first beam body 110 and the second structural layer 200, a plurality of diagonal web members 310 and vertical web members 320 are alternately arranged, and adjacent diagonal web members 310 and vertical web members 320 are connected end to end.

[0107] For example, on the second plane, the diagonal web member 310 is inclined relative to the first structural layer 100, the vertical web member 320 is vertically arranged relative to the first structural layer 100, and the second plane is parallel to the length direction of the first structural layer 100 and perpendicular to the first structural layer 100. Figure 2 As shown, the midline of the first structural layer 100 in the length direction is taken as the symmetry axis, and the diagonal web members 310 on both sides of the symmetry axis are inclined in opposite directions relative to the first structural layer 100. This design can effectively increase the lateral stability of the structure. When subjected to lateral forces along the length direction of the first structural layer 100, the diagonal web members 310 in different inclined directions can resist lateral forces in different directions, thereby further improving the stability of the structure.

[0108] The alternating arrangement of the diagonal web members 310 and the vertical web members 320 forms a stable support network that can effectively disperse and transfer the load. This load dispersion function avoids structural damage caused by excessive force at a single point, and significantly improves the load-bearing capacity and stability of the mechanical structure.

[0109] For example, Figure 6 As shown, the vertical web 320 is a multi-prism structure; Figure 7 As shown, the diagonal web bar 310 is a cylindrical structure.

[0110] In one embodiment, the outer diameter and the wall thickness of the diagonal web member 310 gradually decrease from both ends to the middle of the first beam body 110 .

[0111] For example, along the length direction of the first structural layer 100, the diagonal web members 310 are divided into diagonal web members 310 in the first area, diagonal web members 310 in the second area, and diagonal web members 310 in the third area according to the different positions of the diagonal web members 310. The outer diameter of the diagonal web members 310 in the first area is 273 mm, and the wall thickness is 50 mm. The outer diameter of the diagonal web members 310 in the second area is 168 mm, and the wall thickness is 30 mm. The outer diameter of the diagonal web members 310 in the third area is 273 mm, and the wall thickness is 50 mm.

[0112] For another example, along the length direction of the first structural layer 100, the diagonal web members 310 are divided into diagonal web members 310 in seven regions according to the different positions of the diagonal web members 310. The outer diameter of the diagonal web members 310 in the first region is 273 mm, and the wall thickness is 50 mm. The outer diameter of the diagonal web members 310 in the second region is 273 mm, and the wall thickness is 40 mm. The outer diameter of the diagonal web members 310 in the third region is 219 mm, and the wall thickness is 40 mm. The outer diameter of the diagonal web members 310 in the fourth region is 168 mm, and the wall thickness is 30 mm. The outer diameter of the diagonal web members 310 in the fifth region is 219 mm, and the wall thickness is 40 mm. The outer diameter of the diagonal web members 310 in the sixth region is 273 mm, and the wall thickness is 40 mm. The outer diameter of the diagonal web members 310 in the seventh region is 273 mm, and the wall thickness is 50 mm.

[0113] It should be understood that the number of the diagonal braces 310 in each region is one or more than two.

[0114] By adjusting the outer diameter and wall thickness of the diagonal web 310, the design can be optimized according to the load size borne by the structure at different positions. In the area with heavy load, a larger outer diameter and wall thickness are used to enhance the bearing capacity; in the area with light load, the outer diameter and wall thickness can be appropriately reduced to reduce the cost. This design enhances the adaptability and economy of the structure.

[0115] In one embodiment, the cross-sectional area of ​​the vertical web members 320 installed at both ends of the first beam body 110 is smaller than the cross-sectional area of ​​the vertical web members installed at the middle portion of the first beam body 110 .

[0116] For example, the cross-sectional area of ​​the vertical web member 320 installed at one end of the first beam body 110 is 300mm*300mm, the cross-sectional area of ​​the vertical web member 320 installed at the other end of the first beam body 110 is 300mm*300mm, and the cross-sectional area of ​​the vertical web member installed in the middle part of the first beam body 110 is 300mm*600mm.

[0117] like Figure 8 and Fig. 9 As shown, in one embodiment, connecting plates 330 are respectively provided on the first beam body 110 and the second structural layer 200 , and the diagonal web members 310 and the vertical web members 320 are connected via the connecting plates 330 .

[0118] like Figure 7 As shown, grooves adapted to the connecting plate 330 are provided at both ends of the diagonal web rod 310. Figure 6 As shown, grooves adapted to the connecting plates 330 are provided at both ends of the vertical web bar 320 .

[0119] The strength and stability of the connection can be significantly enhanced by connecting the diagonal web member 310 with the vertical web member 320 through the connecting plate 330. As a reinforcing member, the connecting plate 330 can withstand large shear forces and bending moments to prevent the connection from being damaged due to excessive force.

[0120] The provision of the connecting plate 330 can distribute the load borne by the diagonal web members 310 and the vertical web members 320 to the first beam body 110 and the second structural layer 200, reduce the force concentration of a single component, and thus improve the bearing capacity of the entire structure.

[0121] The rigid connection of the connecting plate 330 can enhance the cooperative effect between the diagonal web member 310 and the vertical web member 320, and improve the rigidity of the entire structure, which helps to resist the deformation and vibration caused by external loads and ensure the stability and safety of the structure.

[0122] Exemplarily, the diagonal web member 310 is fixedly connected to the connecting plate 330 by welding or the like. The vertical web member 320 is fixedly connected to the connecting plate 330 by welding or the like.

[0123] like Fig.14 As shown, in one embodiment, on the first plane, the angle between the vertical web member 320 and the first beam body 110 and / or the second structural layer 200 is α, wherein the first plane is a plane perpendicular to the first beam body 110 and the second structural layer 200, and 66°≤α≤86°.

[0124] Exemplarily, α=66°. In another embodiment, α=70°. In another embodiment, α=76°. In another embodiment, α=80°. In another embodiment, α=86°.

[0125] The setting of the angle α directly affects the stress of the vertical web member 320 and the diagonal web member 310. When the angle α is within this range, the vertical web member 320 and the diagonal web member 310 can better withstand loads from different directions and improve their bearing capacity. In particular, when subjected to axial pressure, a suitable angle α can enhance the stability of the web member and prevent buckling due to pressure.

[0126] Setting the included angle α between the vertical web member 320 and the first beam body 110 and / or the second structural layer 200 within the range of 66° to 86° is a reasonable and effective mechanical structure design solution, which can optimize the structural stress performance, improve the structural stability, facilitate construction and installation, and improve the structural economy, thereby improving the performance and reliability of the entire mechanical structure.

[0127] In a second aspect, an embodiment of the present application further provides a building, comprising a space truss as described in any of the above embodiments.

[0128] In a third aspect, an embodiment of the present application further provides a construction method, the method comprising:

[0129] S100: Fig.17 As shown, the assembly tire frame 400 is installed.

[0130] When assembling the space truss, the first structural layer 100, the second structural layer 200 and the third structural layer 300 are dispersed parts, and the assembly frame 400 is used to fix the first structural layer 100 and the second structural layer 200, so as to facilitate the installation of the third structural layer 300 onto the first structural layer 100 and the second structural layer 200.

[0131] S200: Figures 17 to 19 As shown, the space truss according to any of the above embodiments is divided into three sections for assembly. Fig.18 and Fig.19 The figure shows a schematic diagram of the assembly process of one of the three-section space trusses.

[0132] Exemplarily, when assembling the space truss in segments, first fabricate the frame structures of the first structural layer 100 and the second structural layer 200 each with three segments. Lift each segment of the first structural layer 100 and the second structural layer 200 onto the assembly jig 400, and then use temporary diagonal braces to support each segment of the first structural layer 100 and the second structural layer 200. The assembly jig 400 and the temporary diagonal braces keep each segment of the first structural layer 100 and the second structural layer 200 fixed. Then, according to the lofting data, locate the assembly positions of the third structural layer 300 on the first structural layer 100 and the second structural layer 200, and then connect the corresponding segments of the second structural layer 200 of each segment of the first structural layer 100 through the third structural layer 300 to form a space truss with three sub-trusses arranged separately.

[0133] S300: Install two chevron end columns 500, and the distance between the two chevron end columns 500 is the length of the space truss.

[0134] S400: Erect temporary lattice bracing frames 600, and set two temporary lattice bracing frames 600 at intervals between the two chevron end columns 500. Exemplarily, there is no mandatory sequence between step S300 and step S100. And during the implementation process, there is also no mandatory sequence between step S300 and step S400.

[0135] When erecting the temporary lattice bracing frame 600, use a total station to accurately position and loft each support point. The temporary lattice bracing frame 600 is assembled with standard sections. The main trusses of the temporary lattice bracing frame 600 are all selected as 1.5m * 1.5m * 10.5m temporary supports, and 2 bays are set for each truss structure. To ensure the overall stability of the bracing frame, the support columns of the temporary lattice bracing frame 600 are transversely connected by tie rods. Among them, the support columns of the temporary lattice bracing frame 600 are selected as round tubes Φ180 * 10, the tie rods are selected as Φ89 * 5, the base of the temporary lattice bracing frame 600 uses a 0.16m * 2m * 5m roadbed box, the top operating platform of the temporary lattice bracing frame 600 is selected as HW300 steel section, the lowest layer of the operating platform is in a "mesh" shape, a 2 [I] 40a steel section spans across the "mesh" shaped platform, and a support column is welded to each end of the 2 [I] 40a steel section, and an adjusting pipe is set at a suitable position in the middle, and the material is all Q235B.

[0136] S500: Lift the three sub-trusses onto the support structure composed of the chevron end columns 500 and the temporary lattice bracing frames 600 in sequence, and among them, lift the sub-truss located between the two sub-trusses last.

[0137] The process of lifting the three sub-trusses onto the support structure is for example:

[0138] Name the three sub-trusses the first sub-truss, the second sub-truss, and the third sub-truss respectively.

[0139] like Fig.16 As shown, the two herringbone end columns 500 are named as the first end column and the second end column, respectively, and the two temporary lattice support frames 600 are named as the first temporary bracket and the second temporary bracket, respectively. The first end column, the first temporary bracket, the second temporary bracket and the second end column are arranged in sequence along the length direction of the preset space truss.

[0140] like Fig.15 and Fig.16 As shown, the installation order of the first sub-truss, the second sub-truss and the third sub-truss is: first install the first sub-truss on the first end column and the first temporary support, then install the third sub-truss on the second temporary support and the second end column, and finally install the second sub-truss on the first temporary support and the second end column. The second sub-truss is installed between the first sub-truss and the third sub-truss.

[0141] Before installing the second sub-truss, a yard plate is first set at the connection between the first sub-truss and the second sub-truss, and a yard plate is set at the connection between the third sub-truss and the second sub-truss. When the second sub-truss is installed, the yard plate is used to guide the second sub-truss to accurately dock with the first sub-truss and the third sub-truss. After the second sub-truss is fixed with the first sub-truss and the third sub-truss, each yard plate is cut off.

[0142] S600: Symmetrical welding of the interfaces between the three sub-trusses. Before welding, the area around the weld should be cleaned first, and the welding rod should be checked to see if it meets the requirements and the welding current is adjusted properly. The welding speed must be kept constant, and the weld thickness and width must be uniform. After welding is completed, ultrasonic flaw detection must be performed. After passing the test, the elevation value of the 300 node position of the third structural layer under the current working conditions should be measured and recorded.

[0143] It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.

[0144] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A space truss, characterized in that: include: A first structural layer (100), wherein the first structural layer (100) is a planar frame structure; A second structural layer (200), the second structural layer (200) being a planar frame structure and arranged parallel to the first structural layer (100), the width of the second structural layer (200) being smaller than the width of the first structural layer (100); A third structural layer (300), wherein two third structural layers (300) are arranged at intervals, and the first structural layer (100) and the second structural layer (200) are connected via the two third structural layers (300) to form a frame structure having a trapezoidal cross section along a direction perpendicular to the length; The first structural layer (100) comprises a first beam body (110), the first beam body (110) is a hollow beam body structure, the cross section of the first beam body (110) along a direction perpendicular to the length is trapezoidal, and a rib plate (120) is fixedly arranged inside the first beam body (110) to increase the rigidity of the first beam body (110).

2. The space truss according to claim 1, characterized in that: The first beam body (110) comprises a first side wall (111), a second side wall (112), a third side wall (113) and a fourth side wall (114); the four end faces of the first beam body (110) are adjacent to each other end to end to form the first beam body (110) having a trapezoidal cross section perpendicular to the length direction; the first side wall (111) and the third side wall (113) are arranged in parallel; the second side wall (112) and the fourth side wall (114) are two oblique sides of the trapezoidal cross section of the first beam body (110); and the third structural layer (300) is fixedly connected to the third side wall (113); The rib member (120) comprises a first stiffening rib (121) and a second stiffening rib (122), wherein the first stiffening rib (121) is parallel to the second side wall (112), and the second stiffening rib (122) is parallel to the fourth side wall (114).

3. The space truss according to claim 2, characterized in that: The rib member (120) further comprises a third stiffening rib (123), wherein the third stiffening rib (123) vertically connects the first side wall (111) and the third side wall (113); and / or; The thickness of the first side wall (111) and the third side wall (113) gradually decreases from both ends to the middle of the first beam body.

4. The space truss according to claim 1, characterized in that: The second structural layer (200) comprises: A second beam body (210), wherein the second beam body (210) is parallel to the first beam body (110), the second beam body (210) is a hollow beam and has a connecting side wall (212) and a stepped side wall (214) arranged opposite to each other, the connecting side wall (212) being used to connect to the third structural layer (300), the stepped side wall (214) being provided with a rectangular groove body (216) so that the second beam body (210) has a concave cross-section along a direction perpendicular to the length, the rectangular groove body (216) being arranged so that the inner wall of the stepped side wall (214) is concave toward the connecting side wall (212) and forms a stepped inner wall surface, and at least one reinforcing rib (220) is arranged on the stepped inner wall surface, and the reinforcing rib (220) connects the connecting side wall (212) and the stepped side wall (214).

5. The space truss according to claim 4, characterized in that: The wall thickness of the connecting side wall (212) gradually decreases from the two ends to the middle of the second beam body (210); The wall thickness of the stepped side wall (214) gradually decreases from both ends to the middle of the second beam body (210).

6. The space truss according to claim 4, characterized in that: The second structural layer (200) further comprises a special-shaped stiffening plate (230), one of the special-shaped stiffening plates (230) being respectively arranged on the inner walls at both ends of the second beam body (210), the special-shaped stiffening plate (230) being perpendicular to the length direction of the second beam body (210), the special-shaped stiffening plate (230) being a concave plate structure adapted to the concave cross-section of the second beam body (210), and grooves being arranged at two protrusions of the concave plate structure of the special-shaped stiffening plate (230), and first bolt connection plates (270) being arranged on both sides of the special-shaped stiffening plate (230), and bolt holes being opened on the first bolt connection plates (270); and / or; The second structural layer (200) further comprises an inner stiffening plate (240), and a plurality of inner stiffening plates (240) are arranged at intervals on the inner wall of the middle part of the second beam body (210) except at the two ends, and the inner stiffening plates (240) are concave plate structures adapted to the concave cross-section of the second beam body (210), and second bolt connection plates (280) are arranged on both sides of the inner stiffening plates (240), and bolt holes are opened on the second bolt connection plates (280); and / or; A polygonal groove (260) is provided on the stepped side wall (214) at both ends of the second beam body (210), and the polygonal groove (260) is provided on a different step surface of the stepped side wall (214) than the rectangular groove body (216).

7. The space truss according to claim 1, characterized in that: The third structural layer (300) comprises a diagonal web member (310) and a vertical web member (320), wherein the diagonal web member (310) connects the first beam body (110) and the second structural layer (200), and the vertical web member (320) connects the first beam body (110) and the second structural layer (200), and a plurality of the diagonal web members (310) and the vertical web members (320) are alternately arranged, and adjacent diagonal web members (310) and the vertical web members (320) are connected end to end.

8. The space truss according to claim 7, characterized in that: The outer diameter and wall thickness of the diagonal web member (310) gradually decrease from both ends to the middle of the third structural layer (300); and / or; The cross-sectional area of ​​the vertical web members (320) installed at both ends of the first beam body (110) is smaller than the cross-sectional area of ​​the vertical web members (320) installed at the middle portion of the first beam body (110); and / or; A connecting plate (330) is respectively provided on the first beam body (110) and the second structural layer (200), and the diagonal web member (310) and the vertical web member (320) are connected via the connecting plate (330); and / or; On a first plane, an angle α is formed between the vertical web member (320) and the first beam body (110) and / or the second structural layer (200), wherein the first plane is a plane perpendicular to the first beam body (110) and the second structural layer (200), and 66°≤α≤86°.

9. A building, characterized in that: include: A space truss as claimed in any one of claims 1 to 8.

10. A construction method, characterized in that: include: Installing and assembling tire frame (400); The space truss according to any one of claims 1 to 8 is divided into three sections for assembly. When assembling the space truss in sections, the first structural layer (100) and the second structural layer (200) are firstly made into a frame structure with three sections, and each section of the first structural layer (100) and the second structural layer (200) are hoisted onto the assembly frame (400). Then, each section of the first structural layer (100) and the second structural layer (200) are supported by temporary diagonal braces. The assembly frame (400) is 00) and the temporary diagonal brace to keep the various segments of the first structural layer (100) and the second structural layer (200) fixed, and then locate the assembly position of the third structural layer (300) on the first structural layer (100) and the second structural layer (200) according to the raised and lofted data, and then connect the segments of the second structural layer (200) corresponding to the various segments of the first structural layer (100) through the third structural layer (300) to form a spatial truss with three separately arranged sub-trusses; Install two herringbone end columns (500), the distance between the two herringbone end columns (500) being the length of the space truss; Setting up a temporary lattice support frame (600), wherein two temporary lattice support frames (600) are arranged at intervals between two of the herringbone end columns (500); The three sub-trusses are sequentially hoisted onto the support structure composed of the herringbone end column (500) and the temporary lattice support frame (600), wherein the sub-truss located between two of the sub-trusses is hoisted last; Symmetrically weld the interfaces between the three sub-trusses. Before welding, clean the area around the weld, check whether the welding rod meets the requirements, whether the welding current is adjusted properly, and keep the welding speed constant. The thickness and width of the weld are uniform. After welding is completed, ultrasonic flaw detection is required. After passing the test, measure and record the elevation value of the node position of the third structural layer (300) under the current working condition.

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