BUCKLING OF CIRCULAR STEEL SILOS SUBJECT TO ECCENTRIC DISCHARGE PRSESURES-PART Ⅱ

摘要

The eccentric discharge pressures specified by leading silo loading codes include an axisymmetric component which is the same as that for a silo subject to concentric discharge and an unsymmetric component in the form of patch loads which is intended to represent the detrimental effect of discharge eccentricity. Little information is currently available on the effect of these patch loads on the buckling strength of a circular steel silo, but results presented in the companion paper appear to suggest that the patch loads as specified by existing silo loading codes are likely to be much less important as may be gauged from a linear stress analysis or a linear bifurcation analysis. In this paper, finite element buckling loads from different types of analysis are first presented to clarify the effect of patch loads. Buckling resistances derived from finite element buckling loads according to the procedures given in Eurocode 3 are next presented and compared.