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The influence of axial force fluctuations on the ductility of short steel cylinders has been previously reported by the authors, together with a proposal for a design formula that takes this influence into account. The present paper describes a similar investigation for stiffened short steel box columns. Elastoplastic large-displacement analysis of parametric short steel box columns is carried out...
During earthquake excitations, axial forces fluctuate together with bending moment fluctuations, especially in portal frame bridge piers and the arch-ribs of arch bridges. Conventionally, however, the axial force is treated as constant when evaluating the capacity of structures under seismic loading. In this paper, the influence of axial force fluctuations on the maximum strength and ductility of...
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