Common forms of truss structures and space frame

space truss structure

The space frame generally has bolt ball joint, welding ball joint and so on, is a kind of spatial structure. Trusses generally have single row trusses, triangular trusses, quadrilateral trusses, we often say that the trusses are quadrilateral trusses, it is the most commonly used kind of truss. Steel trusses and aluminum alloy trusses are also commonly used. The stress of truss and space frameTruss is a kind of plane structure, which needs the support of external forces such as the base to form a stable structure. It is a uniaxial stress system. However, the stability of the upper chord of the truss is improved by increasing the width of the upper chord, it’s stability is same in all directions, save material consumption. The truss is developed on the basis of space frame structure, which has unique advantages and practicability compared with space frame structure, also more economical in steel consumption.The space frame can be supported on the periphery and at multiple points, has large in-plane stiffness, it’s a bidirectional stress system. As can be seen from the stress characteristics of the space frame structure, when its side length ratio is greater than 1.5, its stress characteristics change from bidirectional to unidirectional. Therefore, for most rectangular plan buildings, it is mainly a unidirectional stress structure.
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