Characteristics of steel space frame structure type

Space frame structure can be categorized into flat space frame and curved space frame according to its shape. Usually, the flat rack is called space frame; the curved rack is called net shell; the net shell structure is curved space frame structure, which has the characteristics of both rod structure and thin shell structure, with reasonable force and large coverage span. Mesh and shell structure has beautiful architectural shape, whether it is the architectural plane, shape and form can give designers full creative freedom.

On the plane of the building, it can adapt to a variety of shapes, such as circular, rectangular, polygonal, triangular, sectoral and various irregular planes; on the appearance of the building, it can form a variety of curved surfaces, such as spherical, elliptical, rotating parabolic roof, and the various shapes of the building can be obtained by the cutting and combining of the curved surfaces; on the structure, the mesh shell can be subjected to reasonable stress, and a large span can be realized. Structural designers can make the mesh shell stress uniform through careful curved surface design; construction using smaller components prefabricated in the factory to achieve industrialized production, easy and fast on-site installation, without large-scale equipment, comprehensive technical and economic indicators are better.

Space frame, net shell structure for a space rod system structure, with three-dimensional force characteristics, can withstand the role of all directions, and the space frame structure is generally high superstatic structure, if a rod local failure, superstatic number of times to reduce the number of times, the internal force can be re-adjusted and distribution of the whole structure generally does not fail, with a high safety reserve.

The rods in the space frame and net shell structure are both stress rods and mutual support rods, which work together with good integrity and stability, large spatial rigidity, and can effectively withstand asymmetric loads, concentrated loads and dynamic loads, and have better seismic performance.

Under the action of node load, each rod mainly bears axial tension and pressure, which can give full play to the strength of the material and save steel. Flat plate space frame compared with mesh shell, it is a kind of space structure without horizontal thrust or tension, the support structure is relatively simple, general simple support support can be, easy to handle the lower support structure, while the mesh shell structure due to its structural type, the force is more reasonable, and can realize a more beautiful building appearance.

As the space frame, net shell structure combination is regular, a large number of rods and nodes of the same shape, size, and the rods and nodes specification is small, easy to factory batch production, high product quality, site assembly is easier, construction speed.

Space frame, net shell structure not only realizes the use of smaller specification rod to build large-span structure, but also the structure occupies less space, more effective use of space, such as in the space frame and multi-storey net shell structure between the upper and lower strings of the space between the arrangement of a variety of equipment and pipelines. Space frame, net shell structure plane layout flexibility, applicable to rectangular, circular, oval, polygonal, fan-shaped and other building planes, building shape novel, light, spectacular, very expressive, favored by architects and owners.