What are the forms of undertaking steel structure warehouse roof trusses? The design of steel structure warehouse roof trusses requires comprehensive and specific analysis and consideration. A reasonable form of roof truss should meet the needs of drainage slope, building clearance, skylights, canopies, and suspended cranes; The stress, compression, tension, load, and stiffness of the roof truss should be reasonable; It is advisable to reduce the number and variety of roof truss members and nodes, ensure uniform dimensions, and facilitate construction. Steel structure warehouse roof trusses can be divided into triangular roof trusses, trapezoidal roof trusses, and parallel chord roof trusses according to their appearance.
The triangular roof truss has a large difference in shape and bending moment diagram, a small intersection angle between the upper and lower chords, and a complex end node structure. Uneven force distribution and low lateral stiffness, suitable for light roof structures with purlins, steep roof slopes, and small to medium spans.
Triangle roof trusses can be divided into three types based on the arrangement of web members: funk type, monoclinic type, and herringbone type. The Fink type has a wide range of applications, and the roof truss has reasonable force and is easy to transport; The scope of application of monoclinic roof trusses is single, only applicable to roof trusses with a ceiling at the bottom chord; The herringbone roof truss can only be used for roofs with a span of 18 meters or less.
Trapezoidal roof trusses are suitable for large-span, flat roof slopes, and roof structures without purlins. Parallel chord roof truss refers to a type of roof truss in which the upper and lower chord members are parallel, with two types of web members: herringbone and cross. Commonly used for single slope and double slope roofs, or as brackets and support systems. Parallel chord roof trusses have similar member lengths and fewer node types, which meet the requirements of industrial manufacturing and are easy to produce, process, transport, store, and install during construction.