Large-span steel structure petal-shaped space truss roof structure system
Technical Field
The utility model belongs to the building engineering field, concretely relates to large-span steel construction petal-shaped space truss room lid structure system.
Background
With the continuous development of the spatial structure technology in China, the large-span spatial structure is widely applied to public places such as gymnasiums, exhibition centers, airports and the like, and the building models are increasingly enriched. The large-span roof structure has the characteristics of light dead weight, good bearing performance and material saving when adopting a steel structure, and meanwhile, the steel structure roof has good adaptability to building modeling, is flexible in structural arrangement and can easily meet the requirements of building appearance effect and use function. The petal-shaped roof structure has the characteristics of beautiful shape and coordination with the natural environment, and is more and more popular in large-span roof structures. However, the petal-shaped roof has a complex structure and an irregular shape, and has high requirements on machining, manufacturing, construction and installation accuracy. Therefore, it is necessary to provide a roof structure system with reasonable stress, simple force transmission path, high bearing capacity, high rigidity and convenient construction.
Disclosure of Invention
The utility model discloses a solve the technical problem that exists among the known art and provide a large-span steel construction petal space truss roof structure system, this system simple structure, shape rule, be convenient for processing preparation and construction installation.
The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be: a large-span steel structure petal-shaped space truss roof structure system comprises a plurality of petal structures which are connected into a whole at the top of a roof through a pressure ring, each petal structure is provided with a main truss and a plurality of secondary trusses, the main truss and the secondary trusses are planar trusses, the main trusses are vertically arranged and are radially arranged along the roof, the secondary trusses are arranged at intervals along the span direction of the main trusses, each secondary truss structure is symmetrically and fixedly connected with the main trusses, the overhanging ends of two radially adjacent secondary trusses are connected through a radial connecting beam, and all the radial connecting beams positioned on one side of a petal structure are connected together and are connected with the main trusses at the top of the roof and the bottom of the roof to form a petal structure boundary arc-shaped beam; a lower chord horizontal support is arranged between two radially adjacent sub-trusses; two adjacent petal structures are connected through cross diagonal braces, the ring direction is adjacent two connect through the ring direction tie-beam between the secondary truss, constitute a plurality of different, with the concentric ring configuration of pressure ring of radius in the circumference of roof, every the ring configuration all is by a plurality of the ring direction tie-beam is with a plurality of the secondary truss is connected and is formed.
The petal structures are arranged in pairs in the radial direction, and the main trusses of the two petal structures opposite to the radial direction are formed by an arched truss.
The secondary truss adopts a triangular structure.
The pressure ring adopts a plane truss structure, and the height of the intersection of the pressure ring and the main truss is equal.
The petal structure boundary arc-shaped beam is connected with the upper chord of the main truss at the top of the roof.
The utility model has the advantages and positive effects that: the petal structure is adopted, the structure is simple, the installation and the construction are convenient, and the construction period can be shortened. The material has good space stress performance, small structural deformation and high stability in a normal use state; the main truss and the secondary truss are adopted, so that the device has the advantages of definite force transmission and high bearing capacity. And the utility model discloses extensive range of application has.
Drawings
Fig. 1 is a schematic view of the space structure of the present invention;
fig. 2 is a schematic plan view of the present invention;
FIG. 3 is a cross-sectional view taken along line 1-1 of FIG. 2;
FIG. 4 is a schematic diagram of a structural unit of the present invention;
FIG. 5 is a plan view of the arch truss employed by the diametrically opposed petal configurations of the present invention;
FIG. 6 is a plan view of the sub-truss of the present invention;
FIG. 7 is a schematic view of the pressure ring space of the present invention;
fig. 8 is an effect diagram of the present invention.
In the figure: 1. a main truss; 2. a secondary truss; 3. a radial connecting beam; 4. a cross bracing; 5. connecting the beams in an annular manner; 6. 7, horizontally supporting a lower chord; 8. and a pressure ring.
Detailed Description
For further understanding of the contents, features and effects of the present invention, the following embodiments are exemplified and will be described in detail with reference to the accompanying drawings:
referring to fig. 1 to 8, a large-span steel structure petal-shaped space truss roof structure system comprises a plurality of petal structures which are connected into a whole at the top of a roof through a pressure ring 8, each petal structure is provided with a main truss 1 and a plurality of secondary trusses 2, the main truss 1 and the secondary trusses 2 are both plane trusses which can obviously reduce the steel consumption, the main trusses are vertically arranged and are radially arranged along the roof, the plurality of secondary trusses 2 are arranged at intervals along the span direction of the main truss 1, each secondary truss 2 is symmetrically and fixedly connected with the main truss 1, the integral rigidity of the structure can be improved, the overhanging ends of two radially adjacent secondary trusses 2 are connected through a radial connecting beam 3, all the radial connecting beams 3 positioned on one side of the petal structures are connected together and are connected with the main truss 1 at the top of the roof and the bottom of the roof to form a petal structure boundary arc beam, can realize that the structure warp harmoniously, radially adjacent two be equipped with down chord horizontal braces 6, 7 between the inferior truss 2, be used for the reinforcing the stability of inferior truss 2 is connected through alternately bracing 4 between two adjacent petal structures, makes two adjacent petal structures collaborative work, reinforcing structure space wholeness, and the hoop is adjacent two connect through hoop tie-beam 5 between the inferior truss 2, constitute in the circumference of roof a plurality of radiuses unequal, with the concentric annular structure of pressure ring, every the annular structure all is by a plurality of the hoop tie-beam is with a plurality of the inferior truss is connected and is formed.
In this embodiment, the petal structures are arranged in pairs in the radial direction, and the two main trusses 1 of the petal structures opposite in the radial direction are composed of an arched truss, so that the construction is convenient, the bearing capacity is large, and the rigidity is large. The secondary truss 2 adopts a triangular structure, is stable in structure, convenient to mold and light in weight. The pressure ring 8 adopts a plane truss structure, and the heights of the intersection positions of the pressure ring 8 and the main truss 1 are equal, so that the structural integrity can be improved, and the deformation is coordinated and unified. The petal structure boundary arc-shaped beam is connected with the upper chord of the main truss 1 at the top of the roof, so that a smooth surface is formed conveniently.
The utility model has the advantages that:
1) the load transmission path is clear, and the load is transmitted to the cross diagonal braces and the annular connecting beams among the main truss, the secondary truss and the petal structures through the roof structure; the main truss and the secondary truss bear most of roof load, are main bearing structures, and the cross diagonal braces and the annular connecting beams among the petal structures bear a small part of roof load and transmit the load to the annular secondary truss.
2) The structure is shaped like petals, and the appearance is beautiful and corresponds to the nature; the steel structure truss roof has the advantages that the primary truss and the secondary truss are adopted, the structural arrangement is flexible, the requirement of attractive appearance of a building is met while the stress is reasonable, the steel structure truss roof is high in rigidity and bearing capacity, the assembly degree is improved, the construction is simple and convenient, and the construction period can be shortened.
Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention, which is within the scope of the present invention.