Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Dynamic Interaction Behavior of Pile-Supported Wharves and Container Cranes in Liquefiable Soil Embankments
Seaport activities play an important role in local and national economic growth, but are often located in areas of significant seismic activity. Because container wharf systems are responsible for the critical task of loading and unloading cargos, it is important to understand the factors which influence their seismic response. This paper studies the specific effect of wharf-crane interaction for a hypothetical wharf structure as part of the NEES-GC Seismic Risk Mitigation of Ports. Previous studies concluded that during earthquake events, container cranes may act as tuned mass dampers for the underlying wharf structures and thus suggest that it may be appropriate to ignore the dynamic interaction so long as some small portion of the crane's seismic mass is included in the wharf model. However, this conclusion was made based on a simplified wharf model. This study, on the other hand, utilizes a detailed model of a hypothetical wharf including nonlinearities in the piles, pile-deck connections, and soil structure-interaction. Subjecting the wharf and crane to timehistories of ground deformation and pore water pressure, it is demonstrated that considering the crane not only does not reduce wharf response in all cases but may actually amplify structural wharf response. These results suggest that crane-wharf interaction should be given more careful thought than is currently required when evaluating the seismic response of a wharf system.
Dynamic Interaction Behavior of Pile-Supported Wharves and Container Cranes in Liquefiable Soil Embankments
Seaport activities play an important role in local and national economic growth, but are often located in areas of significant seismic activity. Because container wharf systems are responsible for the critical task of loading and unloading cargos, it is important to understand the factors which influence their seismic response. This paper studies the specific effect of wharf-crane interaction for a hypothetical wharf structure as part of the NEES-GC Seismic Risk Mitigation of Ports. Previous studies concluded that during earthquake events, container cranes may act as tuned mass dampers for the underlying wharf structures and thus suggest that it may be appropriate to ignore the dynamic interaction so long as some small portion of the crane's seismic mass is included in the wharf model. However, this conclusion was made based on a simplified wharf model. This study, on the other hand, utilizes a detailed model of a hypothetical wharf including nonlinearities in the piles, pile-deck connections, and soil structure-interaction. Subjecting the wharf and crane to timehistories of ground deformation and pore water pressure, it is demonstrated that considering the crane not only does not reduce wharf response in all cases but may actually amplify structural wharf response. These results suggest that crane-wharf interaction should be given more careful thought than is currently required when evaluating the seismic response of a wharf system.
Dynamic Interaction Behavior of Pile-Supported Wharves and Container Cranes in Liquefiable Soil Embankments
Shafieezadeh, A. (Autor:in) / Kosbab, B. D. (Autor:in) / DesRoches, R. (Autor:in) / Leon, R. T. (Autor:in)
Structures Congress 2012 ; 2012 ; Chicago, Illinois, United States
Structures Congress 2012 ; 549-558
29.03.2012
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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