Cantilever steel structure

Abstract

The utility model relates to the technical field of overhanging steel structures, in particular to an overhanging steel structure which comprises a building structure body, an overhanging steel structure top plate and an overhanging steel structure bottom plate, a steel overhanging structure segmented assembling and fixing structure is arranged on the inner side of the building structure body, and a curved surface steel structure truss structure is arranged on the inner side of the overhanging steel structure top plate. A double-curved-surface supporting frame mounting structure is arranged on the outer side of the building structure body, and a double-curved-surface supporting frame structure is arranged above the cantilever steel structure top plate. According to the cantilever steel structure, the structure that the suspension steel structure bottom plate is firstly installed at the lower end, then the prefabricated double-curved-surface truss structure is spliced on the upper portion, and finally the suspension steel structure top plate structure at the topmost end is installed, so that installation and fixation are conducted in a multi-layer mode from bottom to top, and the installation steps are simple and easy to operate; and in addition, the weight and the size are light during installation in batches each time, the safety is greatly improved, and the installation effect of the cantilever steel structure is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to cantilever steel structure technical field, concretely is a cantilever steel structure. BACKGROUND

[0002] The design of super-span cantilever structure is used in the RMB headquarters building, which reflects the application and innovation of compression torsion thinking. The structure not only needs to meet the functional requirements, but also needs to consider aesthetics and technical feasibility. The primary challenge of super-span cantilever design is how to achieve visual effect and space utilization under the premise of ensuring structural safety. In the design of RMB headquarters building, cantilever structure is widely used in the design of building facade and optimization of internal space.

[0003] For example, the publication number "CN201367646Y" is named high-altitude cantilever steel structure. The bearing platform part and the main body can be connected by using the pin shaft and the rotating member during construction, changing the internal stress state of the cantilever steel structure, and the anti-seismic system, wind-resistant system and steel-concrete composite structure have good functionality and strong firmness of the bearing platform part support. However, the existing high-altitude cantilever steel structure generally needs to precast structure steel pieces that meet the specifications and shapes, then lift the whole to the installation position by using large machinery, and fix the whole by using artificial and connecting installation pieces. This way of overall installation has more construction fixing pieces and poor safety, and the precision of the prefabricated overall cantilever steel structure is also low, which greatly increases the installation period and is not conducive to the installation effect of high-altitude cantilever steel structure.

[0004] At the same time, the existing high-altitude cantilever steel structure mostly uses vertical trusses in the cantilever steel structure to improve the pulling force and support effect, but the vertical trusses and cantilever steel reinforcement structure lines are relatively hard and the overall visual effect is not smooth. At the same time, the vertical trusses and support structure are not convenient to share the load, and more supporting pieces are needed to assist and cooperate to improve the stability of the cantilever steel structure extending out, so the overall solidity of the existing high-altitude cantilever steel structure is relatively poor. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problems of poor installation effect and low solidity of high-altitude cantilever steel structure, and proposes a cantilever steel structure.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The utility model designs a kind of cantilever steel structure, including building structure main body, cantilever steel structure roof and cantilever steel structure bottom plate, the cantilever steel structure bottom plate is fixedly installed in the outer wall one side of building structure main body, the cantilever steel structure roof is fixedly installed in the outer wall of building structure main body, the inside of building structure main body is equipped with steel cantilever structure segmented assembly fixed structure, the inside of cantilever steel structure roof is equipped with curved surface steel structure truss structure, the outside of building structure main body is equipped with double-curved surface support frame mounting structure, the top of cantilever steel structure roof is equipped with double-curved surface support frame structure.

[0008] Preferably, the steel cantilever structure segmented assembly fixed structure includes anchor rods and vertical frames, a plurality of anchor rods are fixedly installed inside the building structure main body, a plurality of lower support plates are fixedly installed on the outer side of the anchor rods, the vertical frames are fixedly installed inside the building structure main body, and the vertical frames are fixedly connected between the anchor rods, a plurality of cantilever columns are fixedly installed above the lower support plates, a plurality of ring beams are fixedly installed above the cantilever columns, and a plurality of reinforcing bars are fixedly installed inside the lower support plates.

[0009] Preferably, the curved surface steel structure truss structure includes a frame beam and an upper roof, the upper roof is fixedly connected to the lower end of the cantilever steel structure roof, the frame beam is fixedly installed at the middle part of the outer side of the building structure main body, a plurality of inclined frames are fixedly connected above the frame beam, a plurality of curved surface trusses are fixedly connected to the top ends of the inclined frames, a plurality of through rods are fixedly connected to the inner sides of the curved surface trusses, and a plurality of fixed rods are fixedly connected to the inner walls of the curved surface trusses.

[0010] Preferably, the lower end of the frame beam is fixedly connected to the top end of the ring beam, and a plurality of reinforcing bars are fixedly installed inside the frame beam.

[0011] Preferably, the double-curved surface support frame mounting structure includes mounting blocks and locking nuts, a plurality of mounting blocks are fixedly installed on the inner wall of the building structure main body, a plurality of insertion bolts are fixedly connected to the inner sides of the mounting blocks, the inner sides of the insertion bolts are fixedly connected to the inside of the building structure main body, a plurality of threaded columns are threadedly connected to the inner sides of the mounting blocks, and a plurality of locking nuts are threadedly connected to the two sides of the threaded columns.

[0012] Preferably, the double-curved surface support frame structure includes connecting plates and suspension blocks, a plurality of suspension blocks are fixedly installed at the top ends of the cantilever steel structure roof, a plurality of double-curved surface suspension frames are fixedly connected above the suspension blocks, the connecting plates are fixedly installed at the top ends of the double-curved surface suspension frames, the connecting plates are fixedly installed on the outer sides of the mounting blocks, a plurality of auxiliary load curved surface rods are fixedly connected to the lower ends of the double-curved surface suspension frames, and the bottom ends of the auxiliary load curved surface rods are fixedly connected to the top of the cantilever steel structure roof.

[0013] The utility model discloses a kind of cantilever steel structures, beneficial effect is in that: by vertical frame and anchor into rod welding fixation, the frame form in the main body of building structure can be formed, cantilever column is made of lightweight steel skeleton, cantilever column is erected in the upper outer side of lower bracing plate every interval distance, so that cantilever column middle space portion can install large block glass to improve cantilever structure inside lighting effect, using the structure that lower end first installs cantilever steel structure bottom plate, then in upper in spliced prefabricated double-curved surface truss structure, finally install the topmost cantilever steel structure roof structure, so it is divided into multiple levels and is installed and fixed from below to above, installation step is simple and easy to operate, and batch installation is lighter in weight and volume each time, safety is greatly improved, so that the installation effect of cantilever steel structure is better.

[0014] Double-curved surface cantilever frame is casted from high toughness high strength and tensile and crack-resistant metal carbon steel material, and is designed as semicircular structure bending to the inside at two sides, and can form suspension support force to the middle part of lower cantilever steel structure roof at two sides, so that the arc streamline of two sides double-curved surface cantilever frame is better, and the arc of double-curved surface cantilever frame does not occupy too much space, improves the stability of fixed cantilever of stress area improvement, and through the cantilever lifting reinforcing structure of double-curved surface design, load can be shared, and the overall solidity of cantilever steel structure can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the three-dimensional schematic diagram of the utility model;

[0016] Figure 2 It is Figure 1 Front view schematic diagram;

[0017] Figure 3 It is Figure 1 Side view schematic diagram;

[0018] Figure 4 It is Figure 2 Amplified sectional view of A part in it;

[0019] Figure 5 It is Figure 2 Amplified sectional view of B part in it;

[0020] Figure 6 It is Figure 2 Amplified sectional view of C part in it.

[0021] In the figure: 1, building structure main body, 2, cantilever steel structure roof, 3, cantilever steel structure bottom plate, 4, steel cantilever structure sectional assembly fixing structure, 41, anchor rod, 42, vertical frame, 43, lower support plate, 44, reinforcing bar, 45, cantilever column, 46, ring beam, 5, curved steel structure truss structure, 51, frame beam, 52, inclined frame, 53, curved truss, 54, through rod, 55, fixed rod, 56, upper roof, 6, hyperboloid support frame mounting structure, 61, mounting block, 62, insertion bolt, 63, threaded column, 64, locking nut, 7, hyperboloid support frame structure, 71, connecting plate, 72, hyperboloid suspension frame, 73, auxiliary load curved rod, 74, suspension block. DETAILED DESCRIPTION

[0022] The utility model will be further described below in combination with the drawings:

[0023] Example 1:

[0024] Please refer to Figures 1-6 : in this embodiment, a cantilever steel structure, including building structure main body 1, cantilever steel structure roof 2 and cantilever steel structure bottom plate 3, cantilever steel structure bottom plate 3 fixed installation is in the outer wall one side of building structure main body 1, and the cantilever steel structure roof 2 and cantilever steel structure bottom plate 3 are all made of high-strength high-carbon metal steel material, are prefabricated in advance, then are fixed in the inside of building structure main body 1 by using the anchor rod 41 of inside, and the cantilever steel structure roof 2 and cantilever steel structure bottom plate 3 are connected and fixed through both sides welding with anchor rod 41, and the cantilever steel structure roof 2 is fixedly installed on the outer wall of building structure main body 1, and the inside of building structure main body 1 is equipped with steel cantilever structure sectional assembly fixing structure 4, and the inside of cantilever steel structure roof 2 is equipped with curved steel structure truss structure 5, and the outside of building structure main body 1 is equipped with hyperboloid support frame mounting structure 6, and the top of cantilever steel structure roof 2 is equipped with hyperboloid support frame structure 7.

[0025] Steel cantilever structure sectional assembly fixing structure 4 includes anchor rod 41 and vertical frame 42, and a plurality of anchor rods 41 are fixedly installed in the inside of building structure main body 1, and anchor rod 41 is made of high-strength threaded steel material, and anchor rod 41 is poured in advance when building structure main body 1 is built, improves the overall connectivity, and a plurality of anchor rods 41 are fixedly installed with lower support plate 43 on the outside, and lower support plate 43 is made of prefabricated steel material, and lower support plate 43 supports the cantilever steel structure bottom plate 3 on the top and can form a cantilever shape away from the ground, and vertical frame 42 is fixedly installed in the inside of building structure main body 1, and vertical frame 42 is vertically poured on the inner wall of building structure main body 1, and vertical frame 42 is welded and fixed with anchor rod 41, can form the frame form in the inside of building structure main body 1, improves the support and fixing effect of cantilever steel structure bottom plate 3, and vertical frame 42 is fixedly connected between anchor rod 41.

[0026] A plurality of cantilever columns 45 are fixedly installed above the lower support plate 43, the cantilever columns 45 are made of light steel framework, the cantilever columns 45 are erected at the upper outer side of the lower support plate 43 at intervals, no cross beams and connecting rods are arranged between the cantilever columns 45, so that the middle space part of the cantilever columns 45 can be installed with large glass to improve the lighting and lighting effect of the inner side of the cantilever structure, a ring beam 46 is fixedly installed above the plurality of cantilever columns 45, the ring beam 46 is cast and attached to the top end of the cantilever columns 45 after assembly connection, which can play the role of tightening the top end of the internal cantilever columns 45 to prevent expansion and deformation, a plurality of reinforcing bars 44 are fixedly installed inside the lower support plate 43, the reinforcing bars 44 are made of metal threaded steel bars penetrating horizontally inside the lower support plate 43, the reinforcing bars 44 can improve the horizontal pulling force inside the lower support plate 43 and reduce the cracking and bending of the lower support plate 43.

[0027] The anchor rod 41 is made of high-strength threaded steel, the anchor rod 41 is cast in advance when the building structure body 1 is built, which improves the overall connectivity, the lower support plate 43 is made of prefabricated steel, the lower support plate 43 can be lifted to form a cantilever shape away from the ground, the vertical frame 42 is vertically cast on the inner wall of the building structure body 1, the vertical frame 42 is welded and fixed with the anchor rod 41, which can form a frame inside the building structure body 1, improve the support and fixing effect of the suspended steel structure bottom plate 3, the cantilever column 45 is made of light steel framework, the cantilever column 45 is erected at the upper outer side of the lower support plate 43 at intervals, no cross beams and connecting rods are arranged between the cantilever columns 45, so that the middle space part of the cantilever columns 45 can be installed with large glass to improve the lighting and lighting effect of the inner side of the cantilever structure.

[0028] The reinforcing bars 44 are made of metal threaded steel bars penetrating horizontally inside the lower support plate 43, the reinforcing bars 44 can improve the horizontal pulling force inside the lower support plate 43 and reduce the cracking and bending of the lower support plate 43, the lower end is installed with the suspended steel structure bottom plate 3 first, then the double curved truss structure is spliced above, and finally the suspended steel structure top plate structure at the top end is installed, so that the installation is divided into multiple levels from bottom to top, the installation steps are simple and easy to operate, and the safety is greatly improved, so that the installation effect of the cantilever steel structure is better.

[0029] The hyperboloid support frame mounting structure 6 comprises mounting blocks 61 and locking nuts 64, a plurality of mounting blocks 61 are fixedly mounted on the inner wall of the building structure body 1, the inner side of the mounting block 61 is fixedly connected with a plurality of insertion bolts 62, the mounting block 61 is transversely and parallelly provided with a plurality of mounting blocks 61, the mounting block 61 is fixedly arranged inside the building structure body 1 by the insertion bolt 62 on the inner side, the mounting block 61 and the building structure body 1 form a connected body, the inner side of the plurality of insertion bolts 62 is fixedly connected with the inside of the building structure body 1, the threaded columns 63 are screwed into both sides of the mounting block 61, the threaded columns 63 penetrate through the mounting block 61 and the inner wall of the building structure body 1, and finally the locking nuts 64 screwed into the inside can realize the fixation of the mounting block 61 driving the outer connecting plate 71, the inner side of the plurality of mounting blocks 61 is threadedly connected with a plurality of threaded columns 63, and the both sides of the plurality of threaded columns 63 are threadedly connected with a plurality of locking nuts 64.

[0030] The hyperboloid support frame structure 7 comprises connecting plates 71 and suspension blocks 74, a plurality of suspension blocks 74 are fixedly mounted at the top end of the cantilever steel structure roof 2, the suspension block 74 is fixedly connected at the top end of the cantilever steel structure roof 2 by welding, a plurality of hyperboloid suspension frames 72 are fixedly connected above the plurality of suspension blocks 74, the hyperboloid suspension frame 72 is made of high-toughness high-strength and anti-tension and anti-cracking metal carbon steel material, the hyperboloid suspension frame 72 is designed as a semicircular structure curved to the inside at both sides, and the hyperboloid suspension frame 72 can form a suspension support force on the middle part of the cantilever steel structure roof 2 below at both sides.

[0031] The two-side hyperboloid suspension frame 72 is good in arc streamline type, the arc of the hyperboloid suspension frame 72 does not occupy too much space, and the visual effect is relatively smooth, the connecting plate 71 is fixedly mounted at the top end of the plurality of hyperboloid suspension frames 72, the plurality of connecting plates 71 are fixedly mounted at the outer side of the mounting block 61, the lower end of the plurality of hyperboloid suspension frames 72 is fixedly connected with a plurality of auxiliary load curved rods 73, the auxiliary load curved rod 73 is made of the same material as the hyperboloid suspension frame 72, the arc-shaped auxiliary load curved rod 73 arranged at the lower end of the hyperboloid suspension frame 72 connects the lower end of the hyperboloid suspension frame 72 with the cantilever steel structure roof 2, improves the fixing stability of the fixed cantilever by improving the stress area, and the bottom end of the plurality of auxiliary load curved rods 73 is fixedly connected with the upper side of the cantilever steel structure roof 2;

[0032] The suspension block 74 is firmly connected to the top end of the cantilever steel structure top plate 2 by welding. The hyperbolic suspension bracket 72 is made of high-toughness, high-strength, and anti-tension and anti-cracking metal carbon steel material. The hyperbolic suspension bracket 72 is designed as a semicircular structure with two sides bent inward. The hyperbolic suspension bracket 72 can form a suspension support force on the middle part of the cantilever steel structure top plate 2 below the two sides. The arc-shaped streamline of the hyperbolic suspension bracket 72 is good, and the arc-shaped hyperbolic suspension bracket 72 does not occupy too much space, and the visual effect is also smooth. The auxiliary load curved rod 73 is made of the same material as the hyperbolic suspension bracket 72. The arc-shaped auxiliary load curved rod 73 is arranged at the lower end of the hyperbolic suspension bracket 72 to connect the lower end of the hyperbolic suspension bracket 72 and the cantilever steel structure top plate 2. The stress area is improved to improve the stability of the fixed cantilever. The cantilever lifting reinforcement structure designed by the hyperbolic surface can share the load and improve the overall solidity of the cantilever steel structure.

[0033] Working principle:

[0034] When using the cantilever steel structure, the multiple different cantilever steel structure parts prepared in advance are installed in batches on the outside of the building structure body 1, and finally a cantilevered steel structure with good stability, high visual effect, and high space utilization is formed. High-precision prefabricated components reduce the complexity of on-site construction and shorten the construction period. In construction management, the quality of each link is strictly controlled to ensure the stability and durability of the cantilever structure.

[0035] Layered safety installation structure of cantilever steel structure:

[0036] The anchor rod 41 is made of high-strength threaded steel. The anchor rod 41 is poured into the building structure body 1 in advance to improve the overall connectivity. The lower support plate 43 is made of prefabricated steel. The lower support plate 43 can be lifted to form a cantilever shape away from the ground. The vertical frame 42 is vertically poured into the inner wall of the building structure body 1. The vertical frame 42 is welded and fixed with the anchor rod 41 to form a frame inside the building structure body 1, improving the support and fixing effect of the suspended steel structure bottom plate 3. The cantilever column 45 is made of lightweight steel frame. The cantilever column 45 is erected on the outside of the lower support plate 43 at intervals. There is no crossbeam or connecting rod between the cantilever columns 54. The middle space of the cantilever column 45 can be installed with large blocks of glass to improve the lighting effect inside the cantilever structure. The reinforcing bar 44 is made of a metal threaded steel bar transversely penetrating the inside of the lower support plate 43. The reinforcing bar 44 can improve the transverse pulling force inside the lower support plate 43, reduce the cracking and bending of the lower support plate 43, and use the structure of the lower end to install the suspended steel structure bottom plate 3 first, then splice the prefabricated hyperbolic truss structure above, and finally install the suspended steel structure top plate structure at the top. This is a multi-level installation from bottom to top. The installation steps are simple and easy to operate.

[0037] Hyperboloid suspension connecting plate mounting structure of cantilever steel structure

[0038] A plurality of mounting blocks 61 are arranged transversely in parallel, the mounting blocks 61 are fixed deeply inside the building structure body 1 by the inner insertion bolts 62, the mounting blocks 61 and the building structure body 1 form a connected body, the inner sides of the plurality of insertion bolts 62 are fixedly connected with the inside of the building structure body 1, the threaded columns 63 penetrate through the mounting blocks 61 and the inner walls of the building structure body 1 at both ends, and finally the locking nuts 64 screwed inwardly on both sides can realize the fixation of the mounting blocks 61 driving the outer connecting plates 71;

[0039] Hyperboloid suspension fixing structure of cantilever steel structure

[0040] The suspension block 74 is firmly connected to the top end of the cantilever steel structure top plate 2 by welding, the hyperboloid suspension bracket 72 is cast from high-toughness, high-strength and anti-tension and anti-cracking metal carbon steel material, the hyperboloid suspension bracket 72 is designed as a semicircular structure curved inward on both sides, the hyperboloid suspension bracket 72 can form a suspension support force on the middle part of the cantilever steel structure top plate 2 below on both sides, so that the arc streamline of the hyperboloid suspension bracket 72 on both sides is better, and the arc of the hyperboloid suspension bracket 72 does not occupy too much space, and the visual effect is also relatively smooth, the auxiliary load curved rod 73 is made of the same material as the hyperboloid suspension bracket 72, the arc-shaped auxiliary load curved rod 73 arranged at the lower end of the hyperboloid suspension bracket 72 connects the lower end of the hyperboloid suspension bracket 72 with the cantilever steel structure top plate 2, improves the fixing stability of the cantilever structure with improved stress area, and the cantilever lifting reinforcing structure designed by the hyperboloid can share the load.

[0041] Example 2

[0042] Please refer to Figures 1-6In the embodiment, the cantilever steel structure further includes a curved steel structure truss structure 5 including a frame beam 51 and an upper top plate 56, the upper top plate 56 is fixedly connected to the lower end of the cantilever steel structure top plate 2, the frame beam 51 is fixedly installed at the outer middle part of the building structure main body 1, a plurality of inclined frames 52 are fixedly connected above the frame beam 51, the plurality of inclined frames 52 are welded at the top end of the frame beam 51 as a group, one side of the frame beam 51 is welded and fixed with the outer side of the spacing structure main body 1 through a pre-embedded part, the top end of the plurality of inclined frames 52 is fixedly connected with a curved truss 53, the curved truss 53 is made of super-high-strength high-rigidity steel material, the curved truss 53 is provided with a smaller arc shape at the top and a larger arc shape at the lower end, the two curved arc shapes are welded between the inclined frame 52 and the upper top plate 56, the truss design structure with the arc is used to improve the appearance and ensure the support effect and the anti-deformation capacity of the upper and lower ends, the inner side of the plurality of curved trusses 53 is fixedly connected with a through rod 54, the through rod 54 transversely penetrates the inner side of the curved truss 53, and a plurality of vertical fixing rods 55 are welded to the outer side of the through rod 54 to support the inner side of the curved truss 53, the pressure applied from the top can be fully shared, and the large-area cavity designed in the inner side of the curved truss 53 effectively reduces the weight of the cantilever steel structure, a plurality of fixing rods 55 are fixedly connected to the inner wall of the curved truss 53, the lower end of the frame beam 51 is fixedly connected with the top end of the ring beam 46, and a plurality of reinforcing ribs 44 are fixedly installed in the frame beam 51.

[0043] Working principle:

[0044] The plurality of inclined frames 52 are welded at the top end of the frame beam 51 as a group, one side of the frame beam 51 is welded and fixed with the outer side of the spacing structure main body 1 through a pre-embedded part, the curved truss 53 is made of super-high-strength high-rigidity steel material, the curved truss 53 is provided with a smaller arc shape at the top and a larger arc shape at the lower end, the two curved arc shapes are welded between the inclined frame 52 and the upper top plate 56, the truss design structure with the arc is used to improve the appearance and ensure the support effect and the anti-deformation capacity of the upper and lower ends, the through rod 54 transversely penetrates the inner side of the curved truss 53, and a plurality of vertical fixing rods 55 are welded to the outer side of the through rod 54 to support the inner side of the curved truss 53, the pressure applied from the top can be fully shared, and the large-area cavity designed in the inner side of the curved truss 53 effectively reduces the weight of the cantilever steel structure.

[0045] Although the utility model has been illustrated and described by referring to the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details can be made within the scope of the claims.

Claims

1. A cantilever steel structure, comprising a building structure main body (1), a cantilever steel structure roof (2) and a cantilever steel structure floor (3), the cantilever steel structure floor (3) is fixedly installed on one side of the outer wall of the building structure main body (1), and the cantilever steel structure roof (2) is fixedly installed above the outer wall of the building structure main body (1), characterized in that: The inner side of the building structure body (1) is provided with a steel cantilever structure segmented assembly fixing structure (4), the inner side of the cantilever steel structure roof (2) is provided with a curved surface steel structure truss structure (5), the outer side of the building structure body (1) is provided with a double-curved surface support frame mounting structure (6), and the upper side of the cantilever steel structure roof (2) is provided with a double-curved surface support frame structure (7).

2. The cantilever steel structure according to claim 1, wherein: The steel cantilever structure segmented assembly fixing structure (4) comprises anchor rods (41) and vertical frames (42), a plurality of anchor rods (41) are fixedly installed in the building structure body (1), a plurality of lower support plates (43) are fixedly installed on the outer sides of the anchor rods (41), the vertical frames (42) are fixedly installed in the building structure body (1), and the vertical frames (42) are fixedly connected with the anchor rods (41). A plurality of cantilever columns (45) are fixedly installed above the lower support plates (43), a plurality of ring beams (46) are fixedly installed above the cantilever columns (45), and a plurality of reinforcing ribs (44) are fixedly installed on the inner sides of the lower support plates (43).

3. The cantilevered steel structure of claim 1, wherein: The curved surface steel structure truss structure (5) comprises a frame beam (51) and an upper roof (56), the upper roof (56) is fixedly connected to the lower end of the cantilever steel structure roof (2), the frame beam (51) is fixedly installed at the middle part of the outer side of the building structure body (1), a plurality of inclined frames (52) are fixedly connected to the upper side of the frame beam (51), a plurality of curved surface trusses (53) are fixedly connected to the top ends of the inclined frames (52), a plurality of through rods (54) are fixedly connected to the inner sides of the curved surface trusses (53), and a plurality of fixing rods (55) are fixedly connected to the inner walls of the curved surface trusses (53).

4. A cantilever steel structure as claimed in claim 3, wherein: The lower end of the frame beam (51) is fixedly connected with the top end of the ring beam (46), and a plurality of reinforcing ribs (44) are fixedly installed in the frame beam (51).

5. The cantilevered steel structure of claim 1, wherein: The double-curved surface support frame mounting structure (6) comprises mounting blocks (61) and locking nuts (64), a plurality of mounting blocks (61) are fixedly installed on the inner wall of the building structure body (1), a plurality of insertion bolts (62) are fixedly connected to the inner sides of the mounting blocks (61), the inner sides of the insertion bolts (62) are fixedly connected with the inside of the building structure body (1), a plurality of threaded columns (63) are screw-connected to the inner sides of the mounting blocks (61), and a plurality of locking nuts (64) are screw-connected to the two sides of the threaded columns (63).

6. The cantilevered steel structure of claim 1, wherein: The hyperboloid support frame structure (7) comprises a connecting plate (71) and a suspension block (74), a plurality of the suspension blocks (74) are fixedly installed at the top end of the cantilever steel structure top plate (2), a plurality of hyperboloid suspension frames (72) are fixedly connected above the plurality of suspension blocks (74), the connecting plate (71) is fixedly installed at the top end of the plurality of hyperboloid suspension frames (72), the plurality of connecting plates (71) are fixedly installed at the outer side of the mounting block (61), and the bottom ends of a plurality of auxiliary load curved surface rods (73) are fixedly connected with the upper side of the cantilever steel structure top plate (2).

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