Abstract
Abstract For tubular members in deepwater offshore platforms which are sealed from the water, the high external hydrostatic pressure introduces an additional compressive hoop stress to the tube. In this paper, the effect of this external hydrostatic pressure on axial load and moment carrying capacity of imperfect inelastic tubular beam-columns is investigated parametrically from the standpoint of beam-column theory. Against the background of this information, modified AISC beam-column interaction equations and sectional-capacity interaction equations are proposed for practical use.
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