American Society of Civil Engineers


Seismic Response of Jumbo Container Cranes and Design Recommendations to Limit Damage and Prevent Collapse


by Erik Soderberg, (SE, Principal, Liftech Consultants Inc., 344 20th Street, Suite 360, Oakland, CA 94612: E-mail: esoderberg@liftech.net) and Michael Jordan, (SE, CEO, Liftech Consultants Inc., 344 20th Street, Suite 360, Oakland, CA 94612 E-mail: mjordan@liftech.net)

pp. 1-10, (doi:  http://dx.doi.org/10.1061/40834(238)105)

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Document type: Conference Proceeding Paper
Part of: Ports 2007: 30 Years of Sharing Ideas: 1977-2007
Abstract: 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. The seismic vulnerability of these large cranes was only recently recognized as a result of detailed time history analysis. This paper discusses what changed to cause the vulnerability, the results of the time history analysis, a physical explanation of the crane-wharf interaction, the inconsistency of seismic design criteria for wharves and cranes, recommended design criteria, and some base isolation and modification concepts.


ASCE Subject Headings:
Containers
Cranes
Failures
Freight terminals
Seismic effects