The undrained uniaxial bearing capacities of skirted footings for offshore structures, namely skirted spudcans, were investigated by means of finite element analysis (FEA). In order to increase the fixity and moment capacity of conventional spudcans, peripheral skirts are fitted to the shallow footings. Additional capacity is acknowledged by the offshore industry, but no formal recommendations have been established to quantify the capacity increase. The present paper assesses the behavior of skirted spudcans subjected to pure vertical, horizontal and moment loading on normally consolidated clay. The resulting bearing capacity factors and the failure mechanisms are presented and compared to both solid embedded footings and circular skirted footings solutions found in the literature.

This content is only available via PDF.
You do not currently have access to this content.