Truss type multi-layer special-shaped tower top corolla steel structure

Abstract

The invention provides a truss type multi-layer special-shaped tower top corolla steel structure which is characterized in that the corolla steel structure comprises a steel plate, comprising a tower body, a core tube arranged on the tower body, large trusses and small trusses which are alternately distributed in the circumferential direction of the core tube and connected with the core tube through embedded part structures, annular supports connected between the trusses, and radial inclined strut assemblies and vertical bearing trusses which are arranged between the upper large truss and the lower large truss. The outer convex and inner concave multilayer petal shapes are respectively connected with the far ends of the large and small trusses through the cylinder body node components. By means of the structure, a main supporting system is creatively converted from top bearing to core tube side wall rooting, the space truss tube body system is used for efficiently transmitting loads and resisting strong wind, and separation of a special-shaped artistic model and a regular stress framework is achieved; and the safety, construction convenience and long-term durability of the structure under harsh conditions such as ultrahigh conditions and coastal conditions are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building structures, in particular to a truss type multi-layer special-shaped tower top crown steel structure. BACKGROUND

[0002] Under the background of rapid development of urban building aesthetics today, the top of high-rise landmark structures often needs to be provided with large artistic shapes to enhance visual impact and landmark, among which the crown shape is favored due to its beautiful shape. However, when such complex and large-span special-shaped crown structure is applied to the top of a tower above 100 meters, it faces severe technical challenges. First, the tower top platform space and bearing capacity are limited, which is difficult to directly provide effective vertical support for the special-shaped structure with huge self-weight. Second, the high-altitude wind load is extremely large, especially in coastal areas with strong wind and salt spray corrosion, which requires high overall stability, fatigue resistance and corrosion resistance of the structure. Third, the complex petal shape is composed of a large number of non-standard arc-shaped components, which are difficult to accurately position and install in the air and reliably connect with the main structure. In addition, the maintenance cost in the harsh environment at high altitude is high and the risk is great. The existing technical solutions often cannot balance the above contradictions, and have defects such as heavy structure, insufficient stability, unreliable connection or difficult maintenance. Therefore, a new structure system is needed to provide a safe, economical, durable and easy-to-implement solution. SUMMARY

[0003] (I) Technical problems solved

[0004] In view of the deficiencies of the prior art, the present application provides a truss type multi-layer special-shaped tower top crown steel structure, which solves the problems that the tower top platform cannot effectively support large structures and complex special-shaped structures are difficult to accurately install in the air.

[0005] (II) Technical solutions

[0006] To achieve the above purpose, the present application is implemented by the following technical solutions: a truss type multi-layer special-shaped tower top crown steel structure, comprising: a tower body, the upper end of the tower body is provided with a core tube, the outer wall of the core tube is provided with a pre-embedded part structure, a large truss and a small truss are alternately and uniformly distributed circumferentially along the core tube, the large truss and the small truss are fixedly connected with the core tube through the pre-embedded part structure, and an annular support is connected between the large truss and the small truss.

[0007] The radial diagonal brace assembly is arranged between the upper large truss and the lower large truss, the lower surface of the upper large truss near one end of the core tube is fixedly connected with the upper surface of the lower large truss near one end of the core tube, and a vertical load-bearing truss is fixedly connected between the lower surface of the upper large truss far from the core tube and the upper surface of the lower large truss far from the core tube, the large truss far from the core tube is fixedly connected to the center of the outer convex petal-shaped structure through a first tube node component, the small truss far from the core tube is fixedly connected to the center of the inner concave petal-shaped structure through a second tube node component, and the outer convex petal-shaped structure and the inner concave petal-shaped structure are fixedly connected through a connecting piece.

[0008] Preferably, the outer convex petal-shaped structure and the inner concave petal-shaped structure are both multi-layer horizontally distributed, the large truss is correspondingly arranged with the outer convex petal-shaped structure, and the small truss is correspondingly arranged with the inner concave petal-shaped structure.

[0009] Preferably, the radial diagonal brace assembly comprises a first radial diagonal brace and a second radial diagonal brace, the first radial diagonal brace and the second radial diagonal brace are cross-mounted, the lower surface of the upper large truss far from the core tube is fixedly connected with the upper surface of the lower large truss near the core tube through the first radial diagonal brace, and the lower surface of the upper large truss near the core tube is fixedly connected with the upper surface of the lower large truss far from the core tube through the second radial diagonal brace.

[0010] Preferably, the embedded part structure comprises a first embedded part and a second embedded part, the large truss is connected with the core tube through the first embedded part, and the small truss is connected with the core tube through the second embedded part.

[0011] Preferably, the first embedded part and the second embedded part are stainless steel embedded parts, and the large truss and the small truss are connected with the corresponding embedded parts through high-strength bolts.

[0012] Preferably, the first tube node component and the second tube node component are both circular arc tube structures, the cross sections of the circular arc tube structures are circular tubes, and the circular arc tube structures are connected with the large truss, the small truss and the corresponding petal-shaped structure through fillet weld joint connection.

[0013] Preferably, a falling prevention platform is arranged below the petal-shaped structure.

[0014] Preferably, a first mounting rod is arranged between the upper large truss and the lower large truss far from the core tube, and a second mounting rod is arranged between the lower small truss and the upper small truss far from the core tube.

[0015] (Three) beneficial effects

[0016] The present application provides a truss type multi-layer special-shaped tower top crown steel structure.

[0017] The truss type multi-layer special-shaped tower top crown steel structure adopts a force transmission system of core tube side wall rooting, directly transmits all loads of the crown to the solid concrete core tube through large trusses and small trusses, fundamentally solves the fundamental problem of lack of effective support surface of an ultra-high tower top, and forms a high-order statically indeterminate overall structure by a spatial steel truss cylinder composed of annular supports, cross-arranged radial diagonal braces and vertical bearing trusses, has excellent lateral stiffness and overall stability, can effectively resist high-altitude strong wind load, ensures safety, realizes "skeleton first, modeling attachment", and provides precise installation bases for irregular petals by the regular truss system, so that the complex artistic modeling and standardized structure construction can be combined, construction precision and efficiency are greatly improved, in view of the high-altitude and sea corrosion environment, stainless steel materials are used for key nodes and are optimized in design, the structural durability is significantly improved, and the later maintenance cost and risk are greatly reduced, in addition, the structure is convenient for integration of additional functions such as a falling prevention platform and an installation rod, and the safety and practicability are further enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0019] Figure 2 It is a schematic diagram of the truss structure of the present application;

[0020] Figure 3 It is a schematic diagram of the crown structure of the present application;

[0021] Figure 4 It is a sectional view of the present application;

[0022] Figure 5 It is a plan layout at a height of 111 meters of the present application;

[0023] Figure 6 It is a plan layout at a height of 114.875 meters of the present application;

[0024] Figure 7 It is a plan layout at a height of 119 meters of the present application.

[0025] 1, tower body; 2, core tube; 3, embedded part structure; 4, first embedded part; 5, second embedded part; 6, large truss; 7, small truss; 8, radial diagonal brace assembly; 9, first radial diagonal brace; 10, second radial diagonal brace; 11, vertical bearing truss; 12, annular support; 13, first cylinder node component; 14, second cylinder node component; 15, outward convex petal modeling; 16, inward concave petal modeling; 17, connecting piece; 18, falling prevention platform; 19, first installation rod; 20, second installation rod. DETAILED DESCRIPTION

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] like Figures 1-7 As shown, this embodiment of the invention provides a truss-type multi-layer irregular tower crown steel structure, including a tower body 1, a core tube 2 provided at the upper end of the tower body 1, a pre-embedded structure 3 provided on the outer wall of the core tube 2, a large truss 6 and a small truss 7 evenly distributed alternately along the circumference of the core tube 2, both the large truss 6 and the small truss 7 are fixedly connected to the core tube 2 through the pre-embedded structure 3, and a ring support 12 connects the large truss 6 and the small truss 7.

[0028] A radial bracing assembly 8 is provided between the upper truss 6 and the lower truss 6. A vertical load-bearing truss 11 is fixedly connected between the lower surface of the upper truss 6 near the core tube 2 and the upper surface of the lower truss 6 near the core tube 2. The end of the truss 6 away from the core tube 2 is fixedly connected to the center of the outwardly convex petal shape 15 through the first tube node component 13. The end of the small truss 7 away from the core tube 2 is fixedly connected to the center of the inwardly concave petal shape 16 through the second tube node component 14. The outwardly convex petal shape 15 and the inwardly concave petal shape 16 are fixedly connected by a connector 17, thus constructing an overall load-bearing and shaping skeleton, connecting the core tube 2 and the petals, and forming a basic support system.

[0029] Both the convex petal shape 15 and the concave petal shape 16 are multi-layered and horizontally distributed. The large truss 6 is set in correspondence with the convex petal shape 15, and the small truss 7 is set in correspondence with the concave petal shape 16. The radial bracing assembly 8 includes a first radial bracing 9 and a second radial bracing 10. The first radial bracing 9 and the second radial bracing 10 are installed crosswise. The lower surface of the upper large truss 6 away from the core tube 2 is fixedly connected to the upper surface of the lower large truss 6 near the core tube 2 through the first radial bracing 9. The lower surface of the upper large truss 6 near the core tube 2 is fixedly connected to the upper surface of the lower large truss 6 away from the core tube 2 through the second radial bracing 10.

[0030] The embedded component structure 3 includes a first embedded component 4 and a second embedded component 5. The large truss 6 is connected to the core tube 2 through the first embedded component 4, and the small truss 7 is connected to the core tube 2 through the second embedded component 5. The first embedded component 4 and the second embedded component 5 are stainless steel embedded components. The large truss 6 and the small truss 7 are connected to the corresponding embedded components by high-strength bolts to prevent corrosion at key root connection points, ensure long-term high-strength connection, and reduce maintenance requirements.

[0031] The first cylinder node member 13 and the second cylinder node member 14 are both circular arc cylinder structures, the cross section of which is a circular pipe, and are connected by fillet welding to the large truss 6, the small truss 7 and the corresponding petal-shaped structure, respectively, to achieve smooth and firm transition connection between the irregular petal-shaped structure and the regular truss. The lower part of the petal-shaped structure is provided with a falling prevention platform 18 to prevent the high-altitude component from falling accidentally and provide safety protection and maintenance conditions. The first installation rod 19 is arranged between the upper large truss 6 and the lower large truss 6 away from the core cylinder 2, and the second installation rod 20 is arranged between the lower small truss 7 and the upper small truss 7 away from the core cylinder 2.

[0032] Working principle: Based on the force transmission concept of the core cylinder 2 side wall, the load of the artistic modeling part is transmitted to the large truss 6 and the small truss 7 through the first cylinder node member 13 and the second cylinder node member 14.

[0033] These trusses are anchored to the core cylinder 2 side wall through the embedded part structure 3, and finally transmit the load to the tower body 1, solving the fundamental problem of limited support surface at the top of the tower. In terms of wind resistance stability, the annular support 12 connecting all the trusses and the cross-arranged radial diagonal strut assembly 8 connect the independent trusses into a whole space steel truss cylinder, providing great lateral stiffness and effectively resisting wind load. The vertical load-bearing truss 11 enhances the vertical continuity of the structure.

[0034] The structure adopts the industrialized logic of skeleton first and modeling attached. The regular truss system installed first provides a precise installation base for the irregular petal-shaped structure, realizes the separation of modeling and stress, facilitates standardized construction, and is made of stainless steel material for key nodes to improve durability and reduce maintenance cost. In addition, the structure can be provided with a falling prevention platform 18 and a first installation rod 19 and a second installation rod 20 to enhance safety and functionality.

[0035] Although embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A trussed multi-layered profiled tower head crown steel structure, characterized in that, The application relates to a tower body (1) which is provided with a core tube (2) at the upper end, the outer wall of the core tube (2) is provided with a pre-embedded part structure (3), large trusses (6) and small trusses (7) are alternately and uniformly distributed along the circumference of the core tube (2), the large trusses (6) and the small trusses (7) are fixedly connected with the core tube (2) through the pre-embedded part structure (3), and annular supports (12) are arranged between the large trusses (6) and the small trusses (7). Radial inclined strut assemblies (8) are arranged between the upper large trusses (6) and the lower large trusses (6), vertical load-bearing trusses (11) are fixedly connected between the lower surface of one end of the upper large trusses (6) which is close to the core tube (2) and the upper surface of one end of the lower large trusses (6) which is close to the core tube (2), one end of the large trusses (6) which is away from the core tube (2) is fixedly connected with the center of an outer convex petal-shaped structure (15) through a first tube body node component (13), one end of the small trusses (7) which is away from the core tube (2) is fixedly connected with the center of an inner concave petal-shaped structure (16) through a second tube body node component (14), and the outer convex petal-shaped structure (15) and the inner concave petal-shaped structure (16) are fixedly connected through connecting pieces (17). The outer convex petal-shaped structure (15) and the inner concave petal-shaped structure (16) are both multi-layer horizontally distributed, the large trusses (6) are correspondingly arranged with the outer convex petal-shaped structure (15), and the small trusses (7) are correspondingly arranged with the inner concave petal-shaped structure (16).

2. A trussed multi-storey irregular tower top crown steel structure according to claim 1, characterized in that: The radial inclined strut assemblies (8) comprise first radial inclined struts (9) and second radial inclined struts (10), the first radial inclined struts (9) and the second radial inclined struts (10) are cross-mounted, the lower surface of one end of the upper large trusses (6) which is away from the core tube (2) and the upper surface of one end of the lower large trusses (6) which is close to the core tube (2) are fixedly connected through the first radial inclined struts (9), and the lower surface of one end of the upper large trusses (6) which is close to the core tube (2) and the upper surface of one end of the lower large trusses (6) which is away from the core tube (2) are fixedly connected through the second radial inclined struts (10).

3. A trussed multi-storey irregular tower top crown steel structure as claimed in claim 1, wherein: The pre-embedded part structure (3) comprises first pre-embedded parts (4) and second pre-embedded parts (5), the large trusses (6) are connected with the core tube (2) through the first pre-embedded parts (4), and the small trusses (7) are connected with the core tube (2) through the second pre-embedded parts (5).

4. A trussed multi-storey irregular tower top crown steel structure as claimed in claim 3, wherein: The first pre-embedded parts (4) and the second pre-embedded parts (5) are stainless steel pre-embedded parts, the large trusses (6) and the small trusses (7) are connected with the corresponding pre-embedded parts through high-strength bolts.

5. A trussed multi-storey irregular tower top crown steel structure as claimed in claim 4, wherein: The first tube body node component (13) and the second tube body node component (14) are both circular arc tube body structures, the cross sections of the circular arc tube body structures are circular tubes, and the circular arc tube body structures are connected with the large trusses (6), the small trusses (7) and the corresponding petal-shaped structures through fillet weld penetration welding.

6. A trussed multi-storey irregular tower top crown steel structure as claimed in claim 1, wherein: A falling prevention platform (18) is arranged below the petal-shaped structure.

7. A trussed multi-storey irregular tower top crown steel structure as claimed in claim 1, wherein: ​ 8. A trussed multi-storey irregular tower top crown steel structure as claimed in claim 1, wherein: The first mounting rod (19) is arranged between the upper large truss (6) and the lower large truss (6) away from the core tube (2), and the second mounting rod (20) is arranged between the lower small truss (7) and the upper small truss (7) away from the core tube (2).

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