Homework $4-1$

Taking Gullfaks skirted GBS case study, estimate whether or not the

foundation has adequate stability under $($a$)$ the vertical gravity load and

$($b$)$ general loading. Assume an undrained soil response to loading.

Take partial load factors on dead loads ${}_D$

$=1\mathrm{.}1,$ live loads, ${}_L=1\mathrm{.}35$ and partial

factor on shear strength ${}_M=1\mathrm{.}25$

$D_{eq}=143m,d=22m$ into seabed

$V=5,000MN,H=712MN,$

$M=49,840MNm-$ acting at

foundation level

Take $s_{u}125$kPa approximately constant

with depth

$>q_{\text{u}\text{l}\text{t}}=(N_c{s}_{u0}+\frac{k{B}^{\text{'}}}{4})F\frac{K_c}{{}_m}$