American Society of Civil Engineers


Seismic Fragility of Jumbo Port Container Cranes


by B. D. Kosbab, (School of Civil and Environmental Engineering, Georgia Institute of Technology, 790 Atlantic Dr., Atlanta GA 30331-0355; E-mail: bkosbab3@gatech.edu), R. DesRoches, Ph.D., (School of Civil and Environmental Engineering, Georgia Institute of Technology, 790 Atlantic Dr., Atlanta GA 30331-0355), and R. T. Leon, Ph.D., P.E., (School of Civil and Environmental Engineering, Georgia Institute of Technology, 790 Atlantic Dr., Atlanta GA 30331-0355)
Section: Engineering Analysis: Structural, pp. 480-489, (doi:  http://dx.doi.org/10.1061/41098(368)50)

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Document type: Conference Proceeding Paper
Part of: Ports 2010: Building on the Past, Respecting the Future
Abstract: The seismic behavior of jumbo container cranes has been largely ignored, despite their importance to daily port container operations. This paper aims to quantify the vulnerability of jumbo cranes to seismic loading. Detailed nonlinear finite element models are constructed representing two different jumbo cranes, one modern and one more classic. These models are used to perform extensive dynamic time-history analyses in order to evaluate their vulnerability to various damage modes. The modern crane exhibits derailment during earthquakes, but is unlikely to suffer other significant structural damage. However, the older crane performs poorly, and is likely to suffer considerable damage during fairly frequent earthquakes. These results suggest that a port relying heavily on older jumbo cranes would be wise to consider retrofit options in order to decrease their overall seismic risk.


ASCE Subject Headings:
Seismic effects
Containers
Marine terminals
Cranes