What are the advantages of truss construction?

Truss in truss structure refers to truss beam, which is a lattice beam structure. Truss structures are often used in long-span workshops, exhibition halls, gymnasiums, bridges and other public buildings. Trusses are usually called roof trusses because they are mainly used for building roof structures. Truss features: light weight, large span, less steel consumption, simple stress system, all two-bar units, convenient construction and fast construction speed. Advantages of truss: the design, manufacture and installation of truss are simple; Trusses are widely used because of their large adaptive span. Disadvantages of trusses: the structural space is large, and its mid-span height H is large, generally (110//5) l0, which brings heavy hills to buildings, especially single-story buildings. The lateral stiffness is small, especially for steel roof trusses, which need to be supported to connect all trusses into a whole, so that they have spatial stiffness to resist longitudinal lateral forces. The cross section of the support is determined according to the structure (slenderness ratio), which consumes steel but fails to make the best use of it.

Truss structure characteristics, advantages and disadvantages and scope of application: Truss is rarely used independently in practical engineering, and it is often a bent roof truss. Truss is a kind of lattice structure system composed of bars. Assuming that the combination of bars is hinged, the internal force of bars is axial force (tension or pressure) under the action of external force, and it is uniformly distributed, so truss structure is more reasonable than beam structure. The internal force of truss members is axial force, while the internal force of beams is mainly bending moment, which is unevenly distributed. The uniform distribution of internal force of truss can give full play to material strength, reduce material consumption, reduce structural weight and increase structural span. Therefore, truss structure is a common structural form of long-span buildings, which is mainly used in public buildings such as stadiums, theaters, exhibition halls, canteens, food markets and shopping malls.