The invention provides a construction method for a cold-bent thin-wall light steel
structure building. The construction method comprises main body component construction, wall board construction, rooftruss construction, roof construction and exterior wall construction, wherein a light steel main body component is light-gage steel
joist which is formed by cold-bending and forming an aluminum-coated
zinc steel strip. According to the construction method provided by the invention, the aluminum-coated
zinc steel strip is assembled from the cold-bent and formed light-gage steel
joist, the assemblystructure shortens the construction period to a very great extent, a
building process adopts dry-
process operation, is free of wet-
process operation,
assembly is performed on a
plant processing site,
assembly can be accomplished through block-building type simple
assembly, the construction period is short, and field assembly is time-saving and labor-saving; and quality and anti-seismic property of the cold-bent thin-wall light steel
structure building are excellent than those of a conventional structure, so that management is convenient. The building uses an environment-friendly energy-savingmaterial, and a
waste material can be utilized for a second time; the obtained roof is stable in structure, and is not liable to move for a long time; and the obtained exterior wall has a ventilatingfunction, so that moist gas is smoothly discharged, and
indoor air is effectively circulated to form a circulating
system with outside.