Supporting structure suitable for large-span high-altitude cantilever construction of steel structure

Abstract

The utility model discloses a supporting structure suitable for large-span high-altitude cantilever construction of a steel structure, which comprises a steel column group, the steel column group comprises four steel pipe columns, the four steel pipe columns are projected along the Z-axis direction, and the projections of the four steel pipe columns are respectively positioned at four corners of a rectangle so as to ensure the stability and uniform stress of the steel column group. The structure is allowed to bear the gravity and external force brought by large span and high-altitude overhanging, additional supporting and fixing are provided for the structure through oblique connection of the second connecting beams between the adjacent steel pipe columns, the stability of the whole structure is further improved, the connecting beam sets and the second connecting beams are arranged in a crossed mode, and the overall structure is more stable. By means of the layout mode, a cross supporting system is effectively formed, the transverse stability and the longitudinal stability of the supporting structure are improved, the connecting beam sets and the second connecting beams which are arranged in a cross mode can share force together under the action of external loads or wind power, deformation and vibration of the structure are reduced, and therefore the stability and the safety of the whole structure are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-altitude cantilever construction, and more specifically, to a supporting structure suitable for large-span high-altitude cantilever construction of steel structures. Background Art

[0002] With the rapid development of domestic steel structure buildings in recent years, more and more buildings have begun to use steel structures. For the construction of high-rise buildings, the most important feature of steel structure buildings is the convenience of construction. Compared with reinforced concrete, the self-weight of steel structure is lighter, and the strength is almost the same as that of reinforced concrete. Therefore, the current large-span buildings in China generally use steel structure as the main skeleton.

[0003] The traditional reinforced concrete building with a large span is difficult to construct, the construction cost is higher, and it is difficult to ensure the aesthetics of the building after it is completed. Compared with reinforced concrete buildings, the construction of steel structure buildings is faster. As long as the steel structure is processed in place in advance and then transported to the construction site for assembly, it avoids possible errors in the construction process of the entire building and can effectively ensure the quality and aesthetics of the building after it is completed. Since the on-site installation method of steel structures is mostly high-altitude bulk construction, the traditional construction method is to set up a floor-standing disc-type scaffolding on the ground as a steel component support structure. This process requires a large work site, increases safety risks, reduces work efficiency, has a large cost investment, and prolongs the construction period. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a support structure suitable for large-span high-altitude cantilever construction of steel structures, so as to solve the problem that the existing large-span high-altitude cantilever construction support structure occupies a large work site area.

[0005] The technical solution of the utility model is as follows: A support structure suitable for large-span high-altitude cantilever construction of steel structures, comprising:

[0006] A steel column group, wherein the steel column group includes four steel pipe columns, and when projected along the Z-axis direction, the projections of the four steel pipe columns are respectively located at the four corners of a rectangle, two first connecting members are arranged in the middle of each of the steel pipe columns, and two second connecting members are arranged at both ends of each of the steel pipe columns;

[0007] a first connecting beam, wherein four first connecting beams are provided, and two ends of each first connecting beam are respectively connected to the first connecting pieces on two adjacent steel pipe columns;

[0008] A second connecting beam, wherein the second connecting beam is arranged between two adjacent steel pipe columns, and one end of the second connecting beam is fixedly connected to a first connecting piece on one of the steel pipe columns, and the other end of the second connecting beam is connected to a second connecting piece on another of the steel pipe columns;

[0009] A plurality of connection beam groups are provided, wherein the connection beam groups and the second connection beams are arranged crosswise, and the connection beam groups are arranged between two adjacent steel pipe columns.

[0010] Furthermore, it also includes an oblique support column and a cross beam, wherein the cross beam is arranged along the X-axis direction, the cross beam is mounted on the two steel pipe columns and one end of the cross beam is a suspended end, the lower end of the oblique support column is fixedly connected to the middle part of the steel pipe column, and the upper end of the oblique support column is fixedly connected to the suspended end of the cross beam, wherein the X-axis and the Z-axis are perpendicular to each other.

[0011] Furthermore, two third connecting members symmetrically arranged about the central axis of the second connecting beam are arranged in the middle part of the second connecting beam, and the connecting beam group includes two third connecting beams arranged in a straight line, one of the two third connecting beams is connected to one of the third connecting members, and the other of the two third connecting beams is connected to the other third connecting member.

[0012] Furthermore, it also includes a cylinder column group, which is corresponding to the steel column group. Each of the cylinder column groups includes two cylinder steel columns arranged along the Y-axis direction, and the distance between the two cylinder steel columns is equal to the distance between the two steel pipe columns in the steel column group in the Y-axis direction.

[0013] Furthermore, the two first connecting members in the middle of each of the steel pipe columns are arranged at 90 degrees.

[0014] Furthermore, the first connecting member includes a straight surface and two inclined surfaces respectively arranged on both sides of the straight surface, the straight surface is parallel to the axis of the steel pipe column, and the inclined surfaces are opposite to the second connecting beam or the third connecting beam.

[0015] Furthermore, it also includes a cantilevered steel beam, which is arranged on the steel column group, and one end of the cantilevered steel beam is fixedly connected to the cylinder column group.

[0016] Furthermore, a plurality of cantilever steel columns are arranged on the steel column group, and a plurality of groups of cantilever steel beams are arranged, and the plurality of groups of cantilever steel beams are arranged in sequence along the Z-axis direction, and two adjacent groups of cantilever steel beams are connected via the cantilever steel columns.

[0017] The utility model according to the above scheme has the following beneficial effects:

[0018] (1) The utility model provides a support structure suitable for large-span high-altitude cantilever construction of steel structures, including a steel column group, which includes four steel pipe columns. Projected along the Z-axis direction, the projections of the four steel pipe columns are respectively located at the four corners of a rectangle to ensure the stability and uniform force of the steel column group, allowing the structure to withstand the gravity and external forces brought by the large span and high-altitude cantilever, thereby enhancing the stability of the entire structure. Secondly, there are four first connecting beams, and the two ends of each first connecting beam are respectively connected to the first connecting pieces on two adjacent steel pipe columns; the second connecting beam is arranged between two adjacent steel pipe columns, and one end of the second connecting beam is fixedly connected to the first connecting piece on one steel pipe column, and the other end of the second connecting beam is connected to the second connecting piece on the other steel pipe column; the oblique connection of the second connecting beam between adjacent steel pipe columns provides additional support and fixation for the structure, further improving the stability of the overall structure. Moreover, the connecting beam group and the second connecting beam are cross-arranged, and the connecting beam group is arranged between two adjacent steel pipe columns. This layout effectively forms a cross-support system, which increases the lateral and longitudinal stability of the supporting structure. When subjected to external loads or wind forces, the cross-arranged connecting beam group and the second connecting beam can share the force together, reduce deformation and vibration of the structure, and thus improve the stability and safety of the overall structure.

[0019] (2) The utility model provides a support structure suitable for large-span high-altitude cantilever construction of steel structures. By setting a connecting beam group between two adjacent steel pipe columns, the connecting beam group and the second connecting beam are cross-set, so that the load can be evenly distributed to the entire support structure, which helps to reduce the force concentration of individual components, avoid local damage or failure, and improve the bearing capacity of the entire support structure. Secondly, the connecting beam group and the second connecting beam can be prefabricated, reducing the complexity and time cost of on-site processing. At the same time, the connection method between the cross-set connecting beam group and the second connecting beam is relatively simple, and the assembly can be completed quickly and accurately, which improves the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a construction flow chart of a support structure suitable for large-span high-altitude cantilever construction of a steel structure in an embodiment of the utility model;

[0022] Figure 2 This is a flow chart for installing a steel column group in an embodiment of the utility model;

[0023] Figure 3 It is a partial structural schematic diagram of a supporting structure suitable for large-span high-altitude cantilever construction of a steel structure in an embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the installation of a steel column group in an embodiment of the utility model;

[0025] Figure 5 This is a schematic diagram of the overall structure of a support structure suitable for large-span high-altitude cantilever construction of a steel structure in an embodiment of the utility model;

[0026] Figure 6 This is a schematic diagram of the installation of the column group in the embodiment of the utility model;

[0027] Figure 7 It is a schematic diagram of the installation of the cylindrical column group and the steel column group in the embodiment of the utility model;

[0028] Figure 8 It is a schematic diagram of the installation of the cantilever steel beam in the embodiment of the utility model.

[0029] In the figure, 1, steel column group; 11, steel pipe column; 111, first connecting member; 1111, straight surface; 1112, inclined surface; 112, second connecting member; 2, first connecting beam; 3, second connecting beam; 31, third connecting member; 4, connecting beam group; 41, third connecting beam; 5, diagonal bracing column; 6, cross beam; 7, tubular column group; 71, tubular steel column; 8, cantilever steel beam; 9, cantilever steel column. DETAILED DESCRIPTION

[0030] The following detailed description and drawings of the embodiments of the present invention are used to illustrate the principle of the present invention, but cannot be used to limit the scope of the present invention, that is, the present invention is not limited to the embodiments described.

[0031] In order to better understand the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0032] See also Figure 3 to Figure 8 As shown, the embodiment of the utility model provides a support structure suitable for large-span high-altitude cantilever construction of steel structures, including a steel column group 1, a first connecting beam 2, a second connecting beam 3 and a plurality of connecting beam groups 4.

[0033] Specifically, the steel column group 1 includes four steel pipe columns 11. When projected along the Z axis, the projections of the four steel pipe columns 11 are respectively located at the four corners of a rectangle. Two first connectors 111 are arranged in the middle of each steel pipe column 11, and two second connectors 112 are arranged at both ends of each steel pipe column 11. This layout makes the entire steel column group 1 structure evenly stressed, and can effectively disperse and bear the load from the height direction. In this embodiment, the steel pipe column 11 is made of low-carbon steel, and has strong capabilities in shear strength, tension resistance, compression resistance and other aspects. The supporting structure suitable for high-altitude cantilever construction of large-span steel structures provided by the embodiment of the utility model adopts the steel pipe column 11 as the main load-bearing component, which enables the steel pipe column 11 to give full play to its stress characteristics in a geological environment with a strong bearing layer, optimizes the bearing capacity of a single pile, thereby reducing the size of the foundation pedestal and the total amount of piles, and ensuring that the supporting structure does not become unstable or deformed during high-altitude cantilever construction.

[0034] In this embodiment, four first connecting beams 2 are provided, and the two ends of each first connecting beam 2 are respectively connected to the first connecting pieces 111 on two adjacent steel pipe columns 11. This layout effectively forms a transverse support system, so that the steel pipe columns 11 are effectively connected and fixed through the first connecting beams 2, thereby enhancing the lateral stability of the entire supporting structure. Secondly, through the connecting action of the first connecting beams 2, a tightly connected overall structure is formed between the steel pipe columns 11, which helps to enhance the stability of the structure and improve the seismic performance of the overall structure. When external forces act, the first connecting beams 2 can cooperate with the steel pipe columns 11 to resist deformation and damage and maintain the integrity and stability of the structure. For example, when the structure is subjected to horizontal external forces or wind loads, the first connecting beams 2 can cooperate with the steel pipe columns 11 to resist, thereby reducing the risk of structural deformation or avoiding skewness to maintain the stability of the structure.

[0035] Preferably, the second connecting beam 3 is arranged between two adjacent steel pipe columns 11, and one end of the second connecting beam 3 is fixedly connected to the first connecting piece 111 on one steel pipe column 11, and the other end of the second connecting beam 3 is connected to the second connecting piece 112 on the other steel pipe column 11 to form an oblique support system, which greatly enhances the stability of the entire support structure. When the structure is subjected to external force, the second connecting beam 3 can cooperate with the steel pipe column 11 to resist deformation and vibration, making the structure more stable, which is particularly important in high-altitude cantilever construction and can ensure the smooth progress of the construction process. Secondly, through the oblique support method, the second connecting beam 3 can disperse part of the load to other steel pipe columns 11, reducing the stress burden of individual components, helping to improve the bearing capacity and safety of the entire support structure, and reducing the risk of structural damage caused by uneven stress.

[0036] The connecting beam group 4 and the second connecting beam 3 are cross-arranged, and the connecting beam group 4 is arranged between two adjacent steel pipe columns 11. This layout forms a complex support network, which not only provides lateral and longitudinal support, but also increases the overall stability of the structure through the intersection. When subjected to external forces, this cross-support structure can effectively disperse and resist the load, reduce the deformation and vibration of the structure, and the connecting beam group 4 is arranged between two adjacent steel pipe columns 11, further strengthening the connection between the steel pipe columns 11. This arrangement allows the steel pipe columns 11, the connecting beam group 4 and the second connecting beam 3 to form a tight whole to jointly resist external loads, thereby significantly improving the stability of the entire structure, so that during high-altitude cantilever construction, it can effectively prevent the support structure from swinging and vibrating under the action of wind or other external forces, ensuring the smooth progress of the construction process.

[0037] Preferably, a supporting structure suitable for large-span high-altitude cantilever construction of steel structures provided by an embodiment of the utility model also includes a diagonal brace column 5 and a cross beam 6. The cross beam 6 is arranged along the X-axis direction, and the cross beam 6 is mounted on two steel pipe columns 11 and one end of the cross beam 6 is a suspended end. The lower end of the diagonal brace column 5 is fixedly connected to the middle part of the steel pipe column 11, and the upper end of the diagonal brace column 5 is fixedly connected to the suspended end of the cross beam 6, wherein the X-axis and the Z-axis are perpendicular to each other.

[0038] Specifically, the diagonal brace column 5, the cross beam 6 and the steel pipe column 11 cooperate to form a stable triangular support system. The diagonal brace column 5 connects the middle part of the steel pipe column 11 and the suspended end of the cross beam 6, effectively supporting the suspended part of the cross beam 6, preventing the cross beam 6 from being overly deformed or unstable when subjected to force. Moreover, the diagonal brace column 5, as an oblique support, can bear the horizontal force component generated by the suspended end of the cross beam 6, further reducing the stress pressure of the steel pipe column 11 and optimizing the stress distribution of the entire structure. This design helps to improve the safety during the construction process and protect the lives of construction workers.

[0039] Preferably, two third connecting members 31 symmetrically arranged about the central axis of the second connecting beam 3 are provided in the middle part of the second connecting beam 3, and the connecting beam group 4 includes two third connecting beams 41 arranged in a straight line, one of the two third connecting beams 41 is connected to a third connecting member 31, and the other of the two third connecting beams 41 is connected to another third connecting member 31.

[0040] Specifically, by arranging two third connecting members 31 symmetrical about the central axis in the middle part of the second connecting beam 3 and connecting them with the two third connecting beams 41 in the connecting beam group 4, a tight and stable connection system is formed, so that the second connecting beam 3 and the connecting beam group 4 can work together to resist external loads, thereby improving the integrity and stability of the entire structure, helping to reduce stress concentration in the structure, and making the force distribution uniform, thereby improving the bearing capacity and safety performance of the structure; secondly, the connection method of the two third connecting beams 41 and the second connecting beam 3 makes the force transfer path more direct and efficient. When the structure is subjected to external force, the load can be quickly and effectively transferred to the adjacent steel pipe column 11 or other supporting structure through the third connecting beam 41, the third connecting member 31 and the second connecting beam 3, avoiding structural deformation caused by excessively long or tortuous force paths, optimizing the force transfer path, and enabling the structure to better adapt to complex construction environments and load conditions.

[0041] Preferably, a support structure suitable for large-span high-altitude cantilever construction of steel structure provided by the embodiment of the utility model also includes a cylinder column group 7, and the cylinder column group 7 and the steel column group 1 are arranged correspondingly. Each cylinder column group 7 includes two cylinder steel columns 71 arranged along the Y-axis direction, and the distance between the two cylinder steel columns 71 is equal to the distance between the two steel pipe columns 11 in the steel column group 1 in the Y-axis direction. Specifically, the arrangement of the cylinder column group 7 can further disperse and transmit the load from the height direction of the support structure. When the large-span high-altitude cantilever construction of the steel structure is subjected to external loads, the cylinder column group 7 can work in coordination with the steel column group 1 to jointly bear the load, reduce the stress burden of a single steel pipe column 11, and reduce the risk of structural damage caused by excessive local stress by optimizing the force distribution, thereby improving the bearing capacity and safety performance of the entire support structure. Secondly, the cylinder column group 7 and the steel column group 1 are arranged correspondingly in the Y-axis direction, which simplifies the difficulty of installation and positioning of the support structure. The construction personnel can quickly determine the installation position of the cylinder column group 7 according to the position of the steel column group 1, thereby improving the construction efficiency.

[0042] Preferably, the two first connecting parts 111 in the middle of each steel pipe column 11 are set at 90°. This design makes the installation and positioning of the steel pipe column 11 more convenient. Construction workers can quickly install it according to this clear angle, which improves construction efficiency, reduces the error rate during construction, and improves construction quality.

[0043] Preferably, the first connecting member 111 includes a straight surface 1111 and two inclined surfaces 1112 respectively arranged on both sides of the straight surface 1111, the straight surface 1111 is parallel to the axis of the steel pipe column 11, and the inclined surfaces 1112 are directly opposite to the second connecting beam 3 or the third connecting beam 41. Specifically, the provision of the two inclined surfaces 1112 further enhances the stability of the first connecting member 111, and the inclined surfaces 1112 can disperse forces from different directions and effectively transfer them to the steel pipe column 11 or other connecting components, so that the connecting member can maintain high bearing capacity and stability under complex force environments.

[0044] Preferably, it also includes a cantilever steel beam 8, which is arranged on the steel column group 1, and one end of the cantilever steel beam 8 is fixedly connected to the column group 7. Specifically, a plurality of cantilever steel columns 9 are arranged on the steel column group 1, and a plurality of cantilever steel beams 8 are arranged in groups, and the plurality of groups of cantilever steel beams 8 are arranged in sequence along the Z-axis direction, and two adjacent groups of cantilever steel beams 8 are connected by the cantilever steel columns 9.

[0045] See also Figure 1-2 As shown, for further explanation, the embodiment of the utility model also provides an installation method of a support structure suitable for large-span high-altitude cantilever construction of a steel structure, including:

[0046] Step 1: Construction preparation. Specifically: measurement and layout, installation of embedded parts of steel column 71 and steel pipe column 11, and pouring of foundation slab concrete;

[0047] Step 2: Install the first section of the cylindrical steel column 71. Specifically, after the cylindrical steel column 71 is manufactured, it is transported as a whole to the construction site, and the individual cylindrical steel columns 71 are installed one by one;

[0048] Step 3: Install the steel column group 1. Specifically, four steel pipe columns 11 are placed vertically and arranged in sequence in a rectangular arrangement to form a steel column group 1, and several steel column groups 1 are installed in sequence along the Y-axis direction to form a cantilever support structure; four first connecting beams 2 are installed, and the two ends of each first connecting beam 2 are respectively connected to the first connecting pieces 111 on two adjacent steel pipe columns 11, and a connecting beam group 4 and a second connecting beam 3 are installed between two adjacent steel pipe columns 11, and one end of the second connecting beam 3 is fixedly connected to the first connecting piece 111 on a steel pipe column 11, and the other end of the second connecting beam 3 is connected to the second connecting piece 112 on another steel pipe column 11, and the connecting beam group 4 and the second connecting beam 3 are arranged crosswise.

[0049] Step 4: Install the first-layer cantilever steel beam 8. Specifically, the first-layer cantilever steel beam 8 is prefabricated and transported to the construction site as a whole. The cantilever steel beam 8 is divided into a main steel beam and a secondary steel beam. The main steel beam is installed first. One end of the main steel beam is hinged to the tube steel column 71 node through 10.9-grade high-strength bolts, and the other end is placed on the steel column group 1. Then the secondary steel beam is installed. The two ends of the secondary steel beam are respectively hinged to the two main steel beams through 10.9-grade high-strength bolts;

[0050] Step 5: Install the cantilever steel column 9. Specifically, the first section of the cantilever steel column 9 is prefabricated and transported to the construction site as a whole. When the cantilever steel column 9 is installed, it is fixed with a connecting device. After the cantilever steel column 9 is calibrated, it is welded with equal strength by CO2 gas shielded welding. The cantilever steel column 9 is calibrated by using a laser theodolite to measure the verticality. If there is any deviation, it is corrected by a screw jack.

[0051] Step 6: Install the second-layer cantilever steel beam 8. Specifically, the second-layer cantilever steel beam 8 is prefabricated and transported to the construction site as a whole. The cantilever steel beam 8 is divided into a main steel beam and a secondary steel beam. The main steel beam is installed first. One end of the main steel beam is hinged to the node of the cylindrical steel column 71 through a 10.9-grade high-strength bolt, and the other end is placed on the steel column group 1. Then the secondary steel beam is installed. The two ends of the secondary steel beam are respectively hinged to the two main steel beams through 10.9-grade high-strength bolts. In this way, they are installed in sequence to form a multi-layer cantilever steel beam 8;

[0052] Step 7: Install the prestressed steel tie rod. Specifically, one end of the prestressed steel tie rod is installed on the lowest cantilever steel beam 8, and the other end of the prestressed steel tie rod is installed on the uppermost cantilever steel beam 8.

[0053] The indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when used, or the orientation or position relationship commonly understood by technical personnel in this field, or the orientation or position relationship in which the product of the application is usually placed when used. It is only for the convenience of describing the present 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 the present application.

[0054] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

[0055] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A support structure suitable for large-span high-altitude cantilever construction of steel structures, characterized in that: include: A steel column group (1), the steel column group (1) comprising four steel pipe columns (11), wherein projections of the four steel pipe columns (11) are respectively located at four corners of a rectangle when projected along the Z-axis direction, two first connecting members (111) are arranged in the middle of each steel pipe column (11), and two second connecting members (112) are arranged at both ends of each steel pipe column (11); A first connecting beam (2), wherein four first connecting beams (2) are provided, and both ends of each first connecting beam (2) are respectively connected to the first connecting members (111) on two adjacent steel pipe columns (11); a second connecting beam (3), the second connecting beam (3) being arranged between two adjacent steel pipe columns (11), and one end of the second connecting beam (3) being fixedly connected to the first connecting piece (111) on one of the steel pipe columns (11), and the other end of the second connecting beam (3) being connected to the second connecting piece (112) on the other of the steel pipe columns (11); A plurality of connection beam groups (4), wherein the connection beam groups (4) and the second connection beams (3) are arranged in a cross-arrangement, and the connection beam groups (4) are arranged between two adjacent steel pipe columns (11).

2. A support structure suitable for large-span high-altitude cantilever construction of steel structures as claimed in claim 1, characterized in that: It also includes an inclined brace column (5) and a crossbeam (6), wherein the crossbeam (6) is arranged along the X-axis direction, the crossbeam (6) is mounted on the two steel pipe columns (11) and one end of the crossbeam (6) is a suspended end, the lower end of the inclined brace column (5) is fixedly connected to the middle part of the steel pipe column (11), and the upper end of the inclined brace column (5) is fixedly connected to the suspended end of the crossbeam (6), wherein the X-axis and the Z-axis are perpendicular to each other.

3. A support structure suitable for large-span high-altitude cantilever construction of steel structures as claimed in claim 1, characterized in that: Two third connecting members (31) are arranged symmetrically about the central axis of the second connecting beam (3) in the middle part of the second connecting beam (3); the connecting beam group (4) comprises two third connecting beams (41) arranged in a straight line; one of the two third connecting beams (41) is connected to one of the third connecting members (31), and the other of the two third connecting beams (41) is connected to the other of the third connecting members (31).

4. A support structure suitable for large-span high-altitude cantilever construction of steel structures as claimed in claim 1, characterized in that: It also includes a cylinder column group (7), wherein the cylinder column group (7) and the steel column group (1) are arranged correspondingly, and each of the cylinder column groups (7) includes two cylinder steel columns (71) arranged along the Y-axis direction, and the distance between the two cylinder steel columns (71) is equal to the distance between the two steel pipe columns (11) in the steel column group (1) in the Y-axis direction.

5. The supporting structure suitable for large-span high-altitude cantilever construction of steel structures as claimed in claim 1, characterized in that: The two first connecting members (111) in the middle of each of the steel pipe columns (11) are arranged at 90 degrees.

6. A support structure suitable for large-span high-altitude cantilever construction of steel structures as claimed in claim 3, characterized in that: The first connecting member (111) comprises a straight surface (1111) and two inclined surfaces (1112) respectively arranged on both sides of the straight surface (1111), the straight surface (1111) is parallel to the axis of the steel pipe column (11), and the inclined surfaces (1112) are opposite to the second connecting beam (3) or the third connecting beam (41).

7. A support structure suitable for large-span high-altitude cantilever construction of steel structures as claimed in claim 4, characterized in that: It also comprises a cantilevered steel beam (8), wherein the cantilevered steel beam (8) is arranged on the steel column group (1), and one end of the cantilevered steel beam (8) is fixedly connected to the cylindrical column group (7).

8. A support structure suitable for large-span high-altitude cantilever construction of steel structures as claimed in claim 7, characterized in that: The steel column group (1) is provided with a plurality of cantilever steel columns (9), and the cantilever steel beams (8) are provided with a plurality of groups. The plurality of groups of cantilever steel beams (8) are arranged in sequence along the Z-axis direction, and two adjacent groups of cantilever steel beams (8) are connected via the cantilever steel columns (9).

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