Strength Assessment of the ZiLi Jack-up

Bohai ZiLi unit is a typical mat foundation Jack-up.The paper is intent to summarize the scope and process for the structural strength assessment of the similar unit,selection of the environmental loadings conditions,including the wave,wind,current loads,inertia loads due to dynamic response and P-δ effect on legs,boundary condition and so on.The detailing strength evaluation method and some special consideration on details were also mentioned.