Integrated structure of overhanging large-span roof and facade hyperboloid grid unit

Abstract

The invention provides a cantilever large-span roof and facade hyperboloid grid unit integrated structure which comprises a plurality of integrated facade steel structure units, the integrated facade steel structure units are sequentially connected to form an annular structure, and an opening is formed in the annular structure; each integrated facade steel structure unit comprises two adjacent roof steel structure systems and a facade steel structure system located between the two roof steel structure systems. A roof steel structure system and a facade steel structure system connected with the roof steel structure system form an integrated facade steel structure unit, and a plurality of integrated facade steel structure units are sequentially connected to form an annular structure, namely an integral steel structure system of the stadium; the roof steel structure system is improved, the two independent structures of the roof steel structure system and the facade steel structure system are connected in an integrated mode, the integrated structure of the overhanging large-span roof and the facade double-curved-surface grid unit is achieved, and the building effect and landscape resources in a stadium and a sports center are effectively shown.

Description

Technical Field

[0001] This application relates to the technical field of building structures, and particularly to an integrated structure of a cantilevered long-span roof and a double-curved grid unit on the facade. Background Art

[0002] Long-span buildings generally refer to buildings that require large spaces according to the requirements of their use functions, such as sports buildings, cultural buildings, exhibition buildings, transportation buildings, etc. Since the roof structure of a stadium has a large overhang and is extremely long, and the facade structure has a complex curved shape, it occupies an important position in the overall architectural design and plays a decisive role in the architectural form. The roof and facade systems can be said to be the most expressive parts of a stadium. The roof and facade structures of many stadiums have left a deep impression on people with their unique shapes and ingenious concepts. The roof structure can influence the volume of a building, affect its harmony with the environment, and also influence the interior and exterior views of the building. Currently, large stadiums are selected to be built inside urban sports centers, with beautiful landscape resources provided, and various architectural function loads such as sightseeing, exhibition, fitness, leisure, entertainment, and catering are reserved. This is very creative. It can not only offer views of the city's beautiful scenery but also provide various possibilities for post-game operation. However, the design and construction of integrating the stadium roof structure and the facade structure are highly difficult, and currently, no stadium has an integrated structure combining the roof structure and the facade structure. Summary of the Invention

[0003] In view of this, the purpose of this application is to provide an integrated structure of a cantilevered long-span roof and a double-curved grid unit on the facade, so as to solve the problem that currently no stadium has an integrated structure combining the roof structure and the facade structure.

[0004] This application provides an integrated structure of a cantilevered long-span roof and a double-curved grid unit on the facade, including:

[0005] A plurality of integral facade steel structure units, which are sequentially connected to form an annular structure, and the annular structure has an opening;

[0006] Each of the integral facade steel structure units includes two adjacent roof steel structure systems and a facade steel structure system located between the two roof steel structure systems.

[0007] In one embodiment, each of the roof steel structure systems includes a roof radial truss mechanism, the roof radial truss mechanism includes a straight part and a curved part, the curved part is connected to the facade steel structure system, a circumferential edge-sealing truss assembly is arranged on the side of the straight part away from the curved part, and a circumferential ring truss assembly is arranged on the side of the straight part close to the curved part.

[0008] In one embodiment, the roof radial truss mechanism includes two lower and parallel cantilever truss lower chords, a cantilever truss upper chord located above the middle of the two cantilever truss lower chords, and a plurality of radial truss vertical webs and a plurality of radial truss diagonal webs located between the cantilever truss upper chord and the cantilever truss lower chord.

[0009] In one embodiment, the upper chord of the cantilever truss includes a straight section and a curved section fixedly connected to the straight section, and the curved section is fixedly connected to the facade steel structure system; at a position opposite to the curved section, the ends of the two lower chords of the cantilever trusses are respectively connected to two connecting rods, and the ends of the two connecting rods away from the lower chord of the cantilever truss intersect to form a convergence point, and the bottom of the convergence point and the bottoms of the two lower chords of the cantilever trusses close to the convergence point are connected to steel columns, and the bottom ends of the steel columns converge to form a main fulcrum.

[0010] In one embodiment, the ring truss assembly is located at the intersection of the cantilever truss lower chord and the connecting rod, and the ring truss assembly includes two parallel ring truss upper chords located at the top, a ring truss lower chord located at the middle and lower part between the two ring truss upper chords, and a plurality of ring truss webs located between the two ring truss upper chords and the ring truss lower chord.

[0011] In one embodiment, the edge banding truss assembly is located at the end of the straight segment away from the curved segment, and the edge banding truss assembly includes three parallel upper edge banding truss upper chords, two lower edge banding truss chords are arranged below the upper edge banding truss chords, and multiple edge banding truss webs are arranged between the upper edge banding truss chords and the lower edge banding truss chords.

[0012] In one embodiment, the roof steel structure system further includes a roof support mechanism, and the roof support mechanism includes:

[0013] a plurality of first beams located in the straight segment and a plurality of second beams located in the curved segment;

[0014] A plurality of roof corner braces are provided, each of which is located on the first beam, and both ends of each roof corner brace are respectively connected to the first beam and the lower chord of the cantilever truss;

[0015] The tie rod is provided with a cast steel point at a node below the curved section, and the two ends of the tie rod are respectively connected to adjacent cast steel points.

[0016] In one embodiment, the facade steel structure system includes a facade main grid mechanism, and the facade main grid mechanism includes:

[0017] For two adjacent main grid columns on the facade, the upper end of each main grid column on the facade is connected to the tail of the curved section of the upper chords of two adjacent cantilever trusses, and the lower end is located at the top of the bottom grid of the facade main grid mechanism;

[0018] There are multiple main grid diagonal columns on the facade, which are located at the bottom ends of the main grid columns on the facade and are in a rhomboid-like structure;

[0019] There are multiple main grid diagonal braces on the facade, and both ends of each main grid diagonal brace are respectively connected to the adjacent main grid column and the main grid diagonal column on the facade.

[0020] In one embodiment, the facade steel structure system further includes a secondary grid on the facade, and the secondary grid on the facade includes:

[0021] The cross bars of the secondary grid on the facade are located at the top of the main grid columns on the facade and the inflection point positions of the main grid diagonal columns on the facade;

[0022] The diagonal bars of the secondary grid on the facade are arranged obliquely and crosswise between adjacent main grid columns and main grid diagonal columns on the facade.

[0023] In one embodiment, the facade steel structure system further includes facade struts, which are located on the main grid columns on the facade. One end of each facade strut is located at the intersection of the main grid column and the main grid diagonal brace, and the other end extends to the inner side of the facade steel structure system.

[0024] The roof steel structure system of the present invention and the facade steel structure system connected to the roof steel structure system form an integrated facade steel structure unit. Multiple integrated facade steel structure units are sequentially connected to form an annular structure, that is, the overall steel structure system of the stadium; by improving the roof steel structure system of the present invention, the two independent structures of the roof steel structure system and the facade steel structure system are integrally connected, realizing the integrated structure of the cantilever large-span roof and the facade double-curved grid unit, and thus effectively presenting the architectural effects and landscape resources inside the stadium and the sports center. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below only relate to some embodiments of the present application and do not limit the present application, where:

[0026] Figure 1 is the integrated structure diagram of the cantilever large-span roof and the facade double-curved grid unit of the embodiment of the present application;

[0027] Figure 2 is a partial perspective view of the integrated structure of the cantilever large-span roof and the facade double-curved grid unit of the embodiment of the present application;

[0028] Figure 3 This is the plan view of the integral facade steel structure unit in the embodiment of the present application;

[0029] Figure 4 This is the diagram of the radial truss mechanism of the roof in the embodiment of the present application;

[0030] Figure 5 This is the diagram of the ring truss assembly and the edge sealing truss assembly in the embodiment of the present application;

[0031] Figure 6 This is the structural diagram of a part of the ring truss assembly in the embodiment of the present application;

[0032] Figure 7 This is the diagram of a part of the edge sealing truss assembly in the embodiment of the present application;

[0033] Figure 8 This is the diagram of the roof support mechanism in the embodiment of the present application;

[0034] Figure 9 This is the diagram of the first beam and the roof knee brace in the embodiment of the present application;

[0035] Figure 10 This is the diagram of the facade steel structure system in the embodiment of the present application;

[0036] Figure 11 This is a partial plan view after the facade steel structure system in the embodiment of the present application is unfolded. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0038] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a unique orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0039] In the application, the term "exemplary" is used to mean "serving as an example, illustration, or explanation". Any embodiment described as "exemplary" in the present application is not necessarily to be construed as more preferred or more advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the present application. In the following description, details are set forth for the purpose of explanation. It should be understood that those of ordinary skill in the art can recognize that the present application can be implemented without the use of these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles disclosed in the present application.

[0040] Please refer to Figure 1 and Figure 2 , the embodiment of the present application provides an integrated structure of a cantilever large-span roof and a facade hyperbolic grid unit, including:

[0041] A plurality of integral facade steel structure units, and the plurality of integral facade steel structure units are sequentially connected to form an annular structure, and the annular structure has an opening;

[0042] Each of the integral facade steel structure units includes two adjacent roof steel structure systems and a facade steel structure system located between the two roof steel structure systems.

[0043] The roof steel structure system of the present invention and the facade steel structure system connected to the roof steel structure system form an integrated facade steel structure unit. Multiple integrated facade steel structure units are sequentially connected to form a ring structure, that is, the overall steel structure system of the stadium. By improving the roof steel structure system, the present invention integrates and connects two independent structures, namely the roof steel structure system and the facade steel structure system, to realize the integrated structure of the cantilever large-span roof and the facade double-curved grid unit, thereby effectively presenting the architectural effects and landscape resources inside the stadium and the sports center.

[0044] The present invention wraps and surrounds continuously, connecting the stadium and adjacent venues into an integrated whole to form a flowing overall venue. Moreover, the facade double-curved grid unit adopts the "scale armor" shape that reflects rigidity, presenting the beauty of strength in addition to softness, and effectively presenting the softness of the lines and the masculinity of the structure of the stadium and even the entire sports center.

[0045] The opening on the ring structure of the present invention is the entrance of the stadium.

[0046] Please refer to Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 Each of the roof steel structure systems includes a roof radial truss mechanism. The roof radial truss mechanism includes a straight part and a curved part. The curved part is connected to the facade steel structure system. A circumferential edge-truss assembly is arranged on the side of the straight part away from the curved part, and a circumferential ring-truss assembly is arranged on the side of the straight part close to the curved part.

[0047] Please refer to Figure 2 and Figure 3 The roof radial truss mechanism includes two cantilever truss lower chords that are parallel and below, a cantilever truss upper chord located above the middle of the two cantilever truss lower chords, and multiple radial truss vertical web members and multiple radial truss diagonal web members located between the cantilever truss upper chord and the cantilever truss lower chords.

[0048] In some embodiments, the stadium includes a grandstand. The grandstand includes multiple concrete frame inclined columns, and the roof radial truss mechanism corresponds to the concrete frame inclined columns one by one.

[0049] Please refer to Figure 2 and Figure 3The upper chord of the cantilever truss includes a straight section and a curved section fixedly connected to the straight section, and the curved section is fixedly connected to the facade steel structure system; at a position opposite to the curved section, the ends of the two lower chords of the cantilever trusses are respectively connected to two connecting rods, and the ends of the two connecting rods away from the lower chord of the cantilever truss intersect to form a convergence point, and the bottom of the convergence point and the bottoms of the two lower chords of the cantilever trusses near the convergence point are connected to steel columns, and the bottom ends of the steel columns converge to form a main support.

[0050] In some embodiments, the curved segment is connected to the straight segment by welding.

[0051] In some embodiments, the curved segments are connected to the facade steel structure system by welding.

[0052] In some embodiments, the main support point is fixedly connected to the top end of the inclined column of the concrete frame.

[0053] See also Figure 6 The ring truss assembly is located at the intersection of the cantilever truss lower chord and the connecting rod, and the ring truss assembly includes two parallel ring truss upper chords, a ring truss lower chord located in the middle and lower part between the two ring truss upper chords, and multiple ring truss webs located between the two ring truss upper chords and the ring truss lower chord.

[0054] See also Figure 2 and Figure 7 The edge banding truss assembly is located at the end of the straight section away from the curved section. The edge banding truss assembly includes three parallel upper edge banding truss upper chords, two lower edge banding truss chords are arranged below the upper edge banding truss chords, and multiple edge banding truss webs are arranged between the upper edge banding truss chords and the lower edge banding truss chords.

[0055] In some embodiments, two ends of each ring truss upper chord are respectively connected to adjacent cantilever truss upper chords.

[0056] In some embodiments, the ring truss upper chords are connected by a plurality of ring truss web members.

[0057] In some embodiments, the lower chord of the ring truss is a downward three-fold structure, and two ends of the lower chord of the ring truss are respectively connected to the adjacent lower chord of the cantilever truss.

[0058] It can be understood that the multiple ring truss web members between the two ring truss upper chords and the ring truss lower chord and the multiple ring truss web members between the ring truss upper chords are connected in order to form a spatially stable system.

[0059] In some embodiments, the two ends of the outermost upper chord of the edge truss are connected to the ends of the adjacent upper chords of the cantilever truss, and the two ends of the inner upper chord of the edge truss are respectively connected to the upper chords of the cantilever truss; the two inner upper chords of the edge truss are respectively located directly above the two lower chords of the edge truss below, and each inner upper chord of the edge truss corresponds to a lower chord of the edge truss one by one.

[0060] In some embodiments, the two ends of each lower chord of the edge truss are respectively connected to the adjacent lower chords of the cantilever truss, and the two ends of one of the outer lower chords of the edge truss are connected to the ends of the adjacent lower chords of the cantilever truss.

[0061] It can be understood that multiple web members of the edge truss are arranged between the upper chord and the lower chord of the edge truss to form a space stable system.

[0062] Please refer to Figure 8 and Figure 9 , the roof steel structure system further includes a roof support mechanism, and the roof support mechanism includes:

[0063] Multiple first beams located in the straight section and multiple second beams located in the curved section;

[0064] Roof knee braces, there are multiple of them, each roof knee brace is located on the first beam, and the two ends of each roof knee brace are respectively connected to the first beam and the lower chord of the cantilever truss;

[0065] Tie rods, a cast steel point is provided at the node below the curved section, and the two ends of the tie rod are respectively connected to the adjacent cast steel points.

[0066] In some embodiments, the first beams are evenly arranged in the straight section, and the two ends of the first beams are connected to the straight sections of the adjacent upper chords of the cantilever truss; the second beams are evenly arranged in the curved section, and the two ends of the second beams are connected to the curved sections of the adjacent upper chords of the cantilever truss.

[0067] Exemplarily, the two ends of each roof knee brace are respectively connected to the first beam and the lower chord of the cantilever truss, and the angle of each roof knee brace is 45°, strengthening the lateral stable support of the roof radial truss mechanism.

[0068] It can be understood that the cast steel point is the intersection point of two connecting rods, steel columns, web members, etc.

[0069] It can be understood that the setting of the tie rods and their connection methods strengthens the lateral stable support of the roof radial truss mechanism when it changes from a three-dimensional truss to a planar truss in the curved section.

[0070] Please refer to Figure 10 and Figure 11, the facade steel structure system includes a main facade grid mechanism, and the main facade grid mechanism includes:

[0071] Two adjacent main facade grid columns, with the upper end of each main facade grid column connected to the tail of the curved section of the upper chords of two adjacent cantilever trusses, and the lower end located at the top of the bottom grid of the main facade grid mechanism;

[0072] Main facade grid inclined columns, multiple in number, located at the bottom ends of the main facade grid columns and forming a rhomboid-like structure;

[0073] Main facade grid diagonal braces, multiple in number, with both ends of each main facade grid diagonal brace connected to adjacent main facade grid columns and main facade grid inclined columns respectively.

[0074] It can be understood that the main facade grid columns form the main stress system of the entire main facade grid mechanism. The combination of the main facade grid inclined columns and the main facade grid columns establishes the force transmission system of the entire facade grid mechanism. The main facade grid diagonal braces strengthen the longitudinal stiffness of the entire facade grid mechanism, ensure the longitudinal stability of the entire facade grid mechanism, and transmit the longitudinal horizontal force.

[0075] It can be understood that at the bottom of the rhomboid-like structure is the convergence point of the support, and this support convergence point is fixed at the top of the concrete frame column.

[0076] Please refer to Figure 10 and Figure 11 , the facade steel structure system also includes a secondary facade grid, and the secondary facade grid includes:

[0077] Secondary facade grid crossbars, located at the top of the main facade grid columns and the inflection point positions of the main facade grid inclined columns;

[0078] Secondary facade grid diagonal bars, arranged diagonally and crosswise between adjacent main facade grid columns and main facade grid inclined columns.

[0079] It can be understood that the secondary facade grid crossbars are respectively arranged at the top of the main facade grid columns and the inflection points of the main facade grid inclined columns according to the grid division scheme in the facade shape of the stadium building, forming the middle area of the entire facade grid;

[0080] It can be understood that the secondary facade grid diagonal bars are arranged diagonally and crosswise between adjacent main facade grid columns and main facade grid inclined columns according to the grid division scheme in the facade shape of the stadium building to realize the facade shape of the stadium.

[0081] It can be understood that the main facade grid columns, the main facade grid diagonal braces, the main facade grid inclined columns above the secondary facade grid crossbars, the secondary facade grid crossbars, and the secondary facade grid diagonal bars form a grid-like structure.

[0082] Please refer to Figure 3 and Figure 11 , the facade steel structure system further includes facade struts, which are located on the facade main grid columns. One end of each facade strut is located at the intersection of the facade main grid column and the facade main grid diagonal brace, and the other end extends to the inner side of the facade steel structure system.

[0083] It can be understood that the facade struts are respectively arranged on each facade main grid column of the east and west stands, and the other end of each facade strut is fixed to the concrete frame inclined column to strengthen the lateral support of the overall facade grid structure.

[0084] The basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only an example and does not constitute a limitation to this application. Although not explicitly stated here, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are proposed in this application, so such modifications, improvements, and corrections still fall within the spirit and scope of the exemplary embodiments of this application.

[0085] Meanwhile, this application uses specific terms to describe the embodiments of this application. Such as "one embodiment", "an embodiment", and / or "some embodiments" mean a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that the "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more at different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application can be appropriately combined.

Claims

1. An integrated structure of a cantilevered long-span roof and a double-curved grid unit on the facade, characterized in that include: A plurality of integrated facade steel structure units, wherein the plurality of integrated facade steel structure units are sequentially connected to form an annular structure, wherein the annular structure has an opening; Each of the integrated facade steel structure units includes two adjacent roof steel structure systems and a facade steel structure system located between the two roof steel structure systems.

2. The integrated structure of the facade hyperbolic grid unit and the cantilever long-span roof according to claim 1, wherein Each of the roof steel structure systems includes a roof radial truss mechanism, which includes a straight portion and a curved portion. The curved portion is connected to the facade steel structure system, and a circumferential edge truss assembly is arranged on the side of the straight portion away from the curved portion, and a circumferential ring truss assembly is arranged on the side of the straight portion close to the curved portion.

3. The integrated structure of the facade hyperbolic grid unit and the cantilever long-span roof according to claim 2, characterized in that, The roof radial truss mechanism includes two lower and parallel cantilever truss lower chords, a cantilever truss upper chord located above the middle of the two cantilever truss lower chords, and multiple radial truss vertical webs and multiple radial truss diagonal webs located between the cantilever truss upper chord and the cantilever truss lower chord.

4. The integrated structure of the facade hyperbolic grid unit and the cantilever long-span roof according to claim 3, characterized in that, The upper chord of the cantilever truss includes a straight section and a curved section fixedly connected to the straight section, and the curved section is fixedly connected to the facade steel structure system; at a position opposite to the curved section, the ends of the two lower chords of the cantilever trusses are respectively connected to two connecting rods, and the ends of the two connecting rods away from the lower chord of the cantilever truss intersect to form a convergence point, and the bottom of the convergence point and the bottoms of the two lower chords of the cantilever trusses near the convergence point are connected to steel columns, and the bottom ends of the steel columns converge to form a main fulcrum.

5. The integrated structure of the facade hyperbolic grid unit and the cantilever long-span roof according to claim 4, characterized in that, The ring truss assembly is located at the intersection of the cantilever truss lower chord and the connecting rod, and the ring truss assembly includes two parallel ring truss upper chords located at the upper part, a ring truss lower chord located at the middle and lower part between the two ring truss upper chords, and multiple ring truss webs located between the two ring truss upper chords and the ring truss lower chord.

6. The integrated structure of the facade hyperbolic grid unit and the cantilever long-span roof according to claim 4, characterized in that, The edge banding truss assembly is located at the end of the straight section away from the curved section. The edge banding truss assembly includes three parallel upper edge banding truss upper chords, two lower edge banding truss chords are arranged below the upper edge banding truss chords, and multiple edge banding truss webs are arranged between the upper edge banding truss chords and the lower edge banding truss chords.

7. The integrated structure of the facade hyperbolic grid unit and the cantilever long-span roof according to claim 4, characterized in that, The roof steel structure system further includes a roof support mechanism, and the roof support mechanism includes: a plurality of first beams located in the straight segment and a plurality of second beams located in the curved segment; A plurality of roof corner braces are provided, each of which is located on the first beam, and both ends of each roof corner brace are respectively connected to the first beam and the lower chord of the cantilever truss; The tie rod is provided with a cast steel point at a node below the curved section, and the two ends of the tie rod are respectively connected to adjacent cast steel points.

8. The integrated structure of the facade hyperbolic grid unit and the cantilever long-span roof according to claim 3, characterized in that, The facade steel structure system includes a facade main grid mechanism, and the facade main grid mechanism includes: Two adjacent main grid columns of the facade, each of which has an upper end connected to the tail of the curved section of the upper chord of two adjacent cantilever trusses, and a lower end located at the top of the bottom grid of the main grid mechanism of the facade; The main grid oblique columns of the facade are provided in plurality, and are located at the bottom ends of the main grid columns of the facade and are in a diamond-like structure; There are multiple main facade grid braces, and both ends of each main facade grid brace are respectively connected to adjacent main facade grid columns and main facade grid diagonal columns.

9. The integrated structure of the facade hyperbolic grid unit and the cantilever long-span roof according to claim 8, characterized in that, The facade steel structure system further includes secondary facade grids, and the secondary facade grids include: Secondary facade grid crossbars, located at the top of the main facade grid columns and the inflection point positions of the main facade grid diagonal columns; Secondary facade grid diagonal bars, arranged obliquely and crosswise between adjacent main facade grid columns and main facade grid diagonal columns.

10. The integrated structure of the facade hyperbolic grid unit and the cantilever long-span roof according to claim 8, characterized in that, The facade steel structure system further includes facade struts, and the facade struts are located on the main facade grid columns. One end of each facade strut is located at the intersection point of the main facade grid column and the main facade grid brace, and the other end extends to the inner side of the facade steel structure system.

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