Category: Cranes: Seismic Issues

Seismic Protection of Quay Cranes

Container cranes have evolved to serve ever increasing ship sizes. Today’s typical container cranes are about triple the size of the first cranes, much heavier, and more vulnerable to damage from seismic events.

Seismic Guidelines for Cranes

Our studies indicate that many jumbo cranes will be extensively damaged in moderate earthquakes, and many jumbo cranes will be severely damaged, or collapse, in the contingency level design earthquake.

EQ Response – Cement Unloader

Video of linear elastic response of cement unloader on typical West Coast wharf subjected to ground motions transverse to wharf from Port of Los Angeles design earthquake with 475 year mean return interval. Analysis based on no damage to unloader structure.