A SIMPLIFIED COMPUTATION MODEL FOR ARCH-SHAPED CORRUGATED SHELL ROOF

摘要

Arch-shaped corrugated shell roof is a new type of steel light structure in China. It is widely used in China now for its short construction period, cheap cost and so on. The construction area covers over 2,000,000 m~2 per year at present. Many arch-shaped corrugated shell roofs have been collapsed in recent years nearly every area in China for heavy snow or typhoon. Xu studied the structure carefully and pointed out that the corrugation on the roof is the key factors for the accidents and the corrugation decreases the bearing capacity of the roof. Based on this fact, the author put forward a type of FEM model to design the structure, which is nonlinear thin-walled beam consisted of orthotropic plates. The computation example of the article indicates this model has good precision and is easy to converge. The model is competent for the design of the structure.