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Li-Li Wu,Xuan-Neng Gao,Yong-Jiu Shi,Yuan-Qing Wang 한국강구조학회 2006 International Journal of Steel Structures Vol.6 No.3
The arch-shaped corugated steel roof is a new type of cold formed thin-waled structure. Since the width-to-thickness ratiosof the plate asemblies of corrugated sections exceed the limits specified in the current design codes, the load-bearingbehavior, especialy loading modes, initial imperfections and boundary conditions, therefore its ultimate load-carying capacityis determined not only by its global stability, but also by its interactive local buckling. In this paper the finite element methodwas aplied to analyze the local buckling behavior of stel arch panels with corrugated trapezium sections. Some tests on theloads to further investigate the loading mechanism of corrugated steel arch panels and the factors refered above. A comparisonbetween the experimental and theoretical results was made, and good agrement was achieved herein. It is shown that therealso exists interactive local buckling among corugated plate assemblies. The experimental results are lower than theoreticalones for axial loading capacity, vice-versa, the former ones are higher for eccentricaly loaded specimens. It is noted that thealso indicate that the trapezium sections have high local buckling capacities, yet they hardly have post-buckling capacities,which are distinctive from that of the plain ones. All these also give some explanations to some corugated steel arch rofscolapsed suddenly in some areas of China.