Studying seismic displacement of a container crane by shaking table test and pushover analysis

In this study, the seismic response of a container crane under a ground motion was investigated by using shake table testing on a 1/20 scale container crane. The 1/20 scale container crane was designed and fabricated according to the similitude laws, utilizing three independent quantities such as geometric length, acceleration, and elastic modulus were used to design the 1/20 scale container crane. The Pohang earthquake was used to evaluate the seismic response of the 1/20 scale container crane at the Seismic Research and Test Center, Pusan National University, Yangsan Campus. The results showed that the maximum strain on the seaside leg occurred at the top of the lower seaside leg. The displacement demand on the container crane was accessed, paying particular attention to the portal frame. The container crane exhibited an elastic-range response, with a portal drift of approximately 14.8 mm when the container crane was subjected to the ground motions with the response spectrum matched to the seismic level Z1S4_2400.