The force on the typical side skeleton nodes of a cross-skeleton icebreaker under ice load action is explored through the numerical analysis of such nodes.

First, based on a PC2 heavy icebreaker, according to China Classification Society (CCS) specifications, the ice load is calculated according to the relevant ice load specifications; next, MSC/PATRAN software is used to create a finite element model of the typical side skeleton nodes, and a representative ice load is applied to the outer plates of the icebreaker so as to obtain the stress state of the typical nodes; finally, by constantly changing the forms of the typical nodes, the stress distribution difference in the area of interest is obtained.

The stress levels of different typical node forms are compared and analyzed, and it is concluded that the superior choices are ribs that cross through the side stringer area, and a structural form of rib disconnection in the deck area.

This paper summarizes and puts forward the design points of the typical structure form of an icebreaker's side skeleton, providing useful references for rib-crossing structural design.