Shake table experiments for the determination of the seismic response of jumbo container cranes

Port structure;Container crane;Earthquake engineering;Seismic behavior;Shake table test;Uplift

Jacobs, Laura Diane ; Civil and Environmental Engineering

University:Georgia Institute of Technology

Department:Civil and Environmental Engineering

关键词: Port structure;    Container crane;    Earthquake engineering;    Seismic behavior;    Shake table test;    Uplift;   

Others  :  https://smartech.gatech.edu/bitstream/1853/37200/1/jacobs_laura_d_201012_phd.pdf

美国|英语

来源: SMARTech Repository

【 摘 要 】

Container cranes represent one of the most critical components of ports worldwide.Despite their importance to port operations, the seismic behavior of cranes has been largely ignored. Since the 1960s, industry experts have recommended allowing cranes to uplift, believing that it would limit the amount of seismic loading.However, modern cranes have become larger and more stable, and the industry experts are now questioning the seismic performance of modern jumbo cranes.The main goal of this research was to experimentally investigate the seismic behavior of container cranes from the general elastic behavior through collapse, including non-linear behavior such as buckling and cross section yielding, utilizing the 6 degree-of-freedom shake tables at the University at Buffalo.The testing was divided into two phases.The first phase of testing was conducted on a 1/20th scale model.The second phase of testing was conducted on a 1/10th scale model, which was designed such that no inelastic action would develop prior to uplift (as is the common design practice).In support of the experiments, finite element models were created to determine what simplifications could be made to the structure to aid in testing.The data collected from the testing has been used to validate finite element models, to give a better understanding of the behavior of container cranes under seismic excitations, validate fragility models, and to develop recommendations and guidelines for the design and testing of container cranes.