Single-side supporting large-span box girder cantilever truss structure

Abstract

The utility model discloses a single-side supporting large-span box girder cantilever truss structure which comprises a stand column, a steel box girder, a cantilever truss and an arc-shaped beam. The stand columns are arranged at intervals in the arc shape. The steel box girder is in an arc shape and arranged above the set of stand columns, the top face of the steel box girder gradually inclines downwards from outside to inside, and the inner side face of the steel box girder is a vertical face. The cantilever trusses are arranged on the inner side of the steel box girder at intervals in the long axial direction of the steel box girder. The outer end of the cantilever truss is fixedly connected with the inner side surface of the steel box girder; the arc-shaped beam is connected to the inner ends of the group of cantilever trusses; connecting beams are arranged between the two cantilever trusses and located at the position between the steel box beam and the arc-shaped beam in the radial direction at intervals. The connecting beams are arc-shaped and are used for fixedly connecting the adjacent cantilever trusses; and a roof is arranged above the cantilever truss, so that the problem that roofs in coastal areas are easy to damage is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cantilever roof structures, and in particular relates to a cantilever truss structure with a single-side support and a large-span box beam. Background Art

[0002] In typhoon areas, damage to metal roof panels and metal curtain walls is a common situation. The damage caused by wind loads in most buildings under typhoons occurs in auxiliary structures such as metal roofs, glass curtain wall systems, etc. Therefore, wind-resistant design must take the same attitude towards the design of the main structure and auxiliary structures. From a design point of view, if the amount of auxiliary structures is reduced in architectural design, the risk of metal being uncovered under wind loads can be reduced. Therefore, the structure is exposed as much as possible, and the exposed crescent-shaped box section is welded and polished with steel structure, and the design of external aluminum panels is not adopted, which fundamentally avoids the risk of roof structure being damaged by wind in typhoon areas. Utility Model Content

[0003] The utility model provides a single-side supported large-span box beam cantilever truss structure, aiming at solving the problem that the roof in coastal areas is easily damaged.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a cantilever truss structure of a box beam with a single side support and a large span, comprising a column, a steel box beam, a cantilever truss and an arc beam; the columns are arranged in a group along the arc at intervals; the steel box beam is arc-shaped and arranged above a group of columns, the top surface of the steel box beam gradually tilts downward from the outside to the inside, and the inner side surface of the steel box beam is a vertical surface; the cantilever truss is arranged in a group along the long axis of the steel box beam at intervals on the inner side of the steel box beam; the outer end of the cantilever truss is connected to the steel box beam The inner side of the curved beam is fixedly connected; the curved beam is connected to the inner end of a group of cantilever trusses; connecting beams are arranged radially at intervals between the two cantilever trusses and between the steel box beam and the curved beam; the connecting beam is arc-shaped and fixedly connects adjacent cantilever trusses; the cross-section of the curved beam is rectangular, and the top surface of the curved beam is an inclined surface that gradually slopes downward from the outside to the inside; the top surface of the steel box beam, the top surface of the cantilever truss and the top surface of the curved beam are located on the same inclined surface, and a roof is arranged above the cantilever truss.

[0005] Furthermore, the cantilever truss is a triangular truss, including an upper chord, a diagonal web and a lower chord; the upper chord is a rectangular cross-section rod, and the connecting beam is connected between the upper chords of adjacent cantilever trusses; transverse ribs are arranged inside the upper chord corresponding to the connecting beam, and bottom ribs are arranged inside the upper chord at the bottom of the transverse ribs.

[0006] Furthermore, the steel box girder is provided with annular ribs in an annular direction, and connecting ribs are provided between adjacent annular ribs.

[0007] Furthermore, the outer side surface of the steel box girder is gradually inclined outward from top to bottom, and an acute angle is formed between the outer side surface and the top surface of the steel box girder.

[0008] Furthermore, the inclination angles of the top surfaces of the steel box beam, the cantilever truss and the curved beam are no greater than 12°.

[0009] Furthermore, the roof is made of PTFE membrane.

[0010] Furthermore, the cantilever truss is fixed to the steel box girder by welding.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model is composed of a steel box girder supported on one side and a cantilever truss, and has a simple structure; the steel box girder, cantilever truss and curved beam are shaped inward and downward, which is beneficial to reducing upward wind suction, improving the wind-resistant performance of the roof structure, and improving the safety and stability of the roof structure in typhoon areas; the structural roof system is composed of a curved steel box girder supported on one side and a cantilever truss, and the membrane structure is covered above and on the sides of the cantilever truss, forming a unified and simple architectural effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the side structure of the utility model.

[0013] Figure 2 It is a three-dimensional structural schematic diagram of the utility model.

[0014] Figure 3 It is a schematic diagram of the cross-sectional structure of the cantilever truss of the utility model.

[0015] Figure 4 It is a schematic diagram of the side structure of the connection between the connecting beam and the cantilever truss of the utility model.

[0016] Figure 5 It is a front structural schematic diagram of the connection between the connecting beam and the cantilever truss of the utility model.

[0017] Description of the drawings: 1. Column; 2. Steel box girder; 2.1. Circumferential rib; 3. Cantilever truss; 3.1. Upper chord; 3.2. Diagonal web member; 3.3. Lower chord; 4. Connecting beam; 5. Curved beam; 6. Transverse rib; 7. Bottom rib; 8. Roof. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings of the specification to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing this patent and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0020] In conjunction with the accompanying drawings, the utility model is a cantilever truss structure of a large-span box beam supported on one side, comprising a column 1, a steel box beam 2, a cantilever truss 3 and an arc beam 5; the column 1 has a group, which is arranged at intervals along the arc; the steel box beam 2 is arc-shaped, arranged above a group of columns 1, the top surface of the steel box beam 2 gradually tilts downward from the outside to the inside, and the inner side surface of the steel box beam 2 is a vertical surface; the cantilever truss 3 has a group, which is arranged at intervals on the inner side of the steel box beam 2 along the long axis of the steel box beam 2; the outer end of the cantilever truss 3 is fixedly connected to the inner side surface of the steel box beam 2; the The arc beam 5 is connected to the inner end of a group of cantilever trusses 3; a connecting beam 4 is arranged radially at intervals between two cantilever trusses 3 and between the steel box beam 2 and the arc beam 5; the connecting beam 4 is arc-shaped and fixedly connects the adjacent cantilever trusses 3; the cross section of the arc beam 5 is rectangular, and the top surface of the arc beam 5 is an inclined surface that gradually slopes downward from the outside to the inside; the top surface of the steel box beam 2, the top surface of the cantilever truss 3 and the top surface of the arc beam 5 are located on the same inclined surface, and a roof 8 is arranged above the cantilever truss 3. The inclined roof is conducive to reducing upward wind suction and improving the wind-resistant performance of the roof structure.

[0021] The cantilever truss 3 is a triangular truss, including an upper chord 3.1, a diagonal web 3.2 and a lower chord 3.3; the upper chord 3.1 is a rectangular cross-section rod, and the connecting beam 4 is connected between the upper chords 3.1 of adjacent cantilever trusses 3; a transverse rib 6 is arranged inside the upper chord 3.1 corresponding to the connecting beam 4, and a bottom rib 7 is arranged inside the upper chord 3.1 at the bottom of the transverse rib 6.

[0022] Circumferential ribs 2.1 are arranged in the circumferential direction inside the steel box girder 2, and connecting ribs are arranged between adjacent circumferential ribs 2.1.

[0023] The outer side surface of the steel box beam 2 is gradually tilted outward from top to bottom, and an acute angle is formed between the outer side surface and the top surface of the steel box beam 2. The steel box beam 2 is in a crescent shape, arranged around the stadium, and has a beautiful structure.

[0024] The larger the tilt angle, the smaller the wind suction and the greater the wind pressure. In this embodiment, the inclination angles of the top surfaces of the steel box girder 2, the cantilever truss 3 and the curved beam 5 are not greater than 12°, and the drainage slope of the roof is not greater than 20°.

[0025] The roof 8 is made of PTFE membrane, and the cantilever truss 3 is covered with PTFE membrane as roof decoration. In order to form a unified design effect, the side of the cantilever truss 3 is also made of high-transmittance PTFE membrane as outer decoration.

[0026] The cantilever truss 3 and the steel box girder 2 are welded and fixed.

[0027] The force transmission system of the vertical load of the roof structure is: roof system, three-chord cantilever truss, curved steel box beam, vertical load-bearing components, grandstand concrete structure and lower concrete structure. The structural force principle is clear. Concrete block counterweights are placed inside the steel box beam to balance the inward deflection of the roof under the action of the dead load, thereby avoiding the processing difficulties caused by the complex pre-arching of the spatial steel structure. This roof form ensures that the typhoon has the least impact on the roof structure system, and is more conducive to the structural force of wind load control.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A cantilever truss structure with a single-side support and a large-span box beam, characterized in that: The invention comprises a column (1), a steel box beam (2), a cantilever truss (3) and a curved beam (5); the column (1) has a group and is arranged at intervals along the arc; the steel box beam (2) is curved and is arranged above a group of columns (1); the top surface of the steel box beam (2) gradually tilts downward from the outside to the inside, and the inner side surface of the steel box beam (2) is a vertical surface; the cantilever truss (3) has a group and is arranged at intervals on the inner side of the steel box beam (2) along the long axis of the steel box beam (2); the outer end of the cantilever truss (3) is fixedly connected to the inner side surface of the steel box beam (2); the curved beam (5) is connected At the inner end of a group of cantilever trusses (3); between two cantilever trusses (3), between the steel box girder (2) and the curved beam (5), connecting beams (4) are arranged at intervals along the radial direction; the connecting beams (4) are arc-shaped and fixedly connect adjacent cantilever trusses (3); the cross-section of the curved beam (5) is rectangular, and the top surface of the curved beam (5) is an inclined surface that gradually slopes downward from the outside to the inside; the top surface of the steel box girder (2), the top surface of the cantilever truss (3) and the top surface of the curved beam (5) are located on the same inclined surface, and a roof (8) is arranged above the cantilever truss (3).

2. The single-side supported large-span box beam cantilever truss structure according to claim 1 is characterized in that: The cantilever truss (3) is a triangular truss, comprising an upper chord (3.1), a diagonal web (3.2) and a lower chord (3.3); the upper chord (3.1) is a rectangular cross-section bar, and the connecting beam (4) is connected between the upper chords (3.1) of adjacent cantilever trusses (3); a transverse rib (6) is arranged inside the upper chord (3.1) at a position corresponding to the connecting beam (4), and a bottom rib (7) is arranged inside the upper chord (3.1) at the bottom of the transverse rib (6).

3. The single-side supported large-span box beam cantilever truss structure according to claim 1 is characterized in that: Annular ribs (2.1) are arranged in the circumferential direction inside the steel box girder (2), and connecting ribs are arranged between adjacent annular ribs (2.1).

4. The single-side supported large-span box beam cantilever truss structure according to claim 1, characterized in that: The outer side surface of the steel box girder (2) is gradually inclined outward from top to bottom, and an acute angle is formed between the outer side surface of the steel box girder (2) and the top surface.

5. The single-side supported large-span box girder cantilever truss structure according to claim 1, characterized in that: The inclination angles of the top surface of the steel box beam (2), the top surface of the cantilever truss (3) and the top surface of the curved beam (5) are no greater than 12°.

6. The single-side supported large-span box beam cantilever truss structure according to claim 1, characterized in that: The roof (8) is made of PTFE membrane.

7. The single-side supported large-span box beam cantilever truss structure according to claim 1, characterized in that: The cantilever truss (3) and the steel box girder (2) are fixed by welding.

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