TY - JOUR
T1 - Seismic response of a container crane subjected to ground motions
AU - Meisuh, Bismark Kofi
AU - Seo, Junwon
AU - Huh, Jungwon
AU - Kim, Junghan
AU - Kim, Jae Min
N1 - Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/9
Y1 - 2022/9
N2 - This study examined the effect of earthquake frequency on the seismic response of a typical modern container crane. A time-history analysis was carried out on the crane using 93 real ground motion records to investigate its behavior. Also, an eigenvalue and a nonlinear pushover analysis were conducted to obtain the dynamic properties and assess the structural performance of the crane, respectively. Three earthquake suites categorized as low-frequency earthquake suite (LFES), intermediate frequency earthquake suite (IFES), and high-frequency earthquake suite (HFES) were considered in this study. The earthquakes were categorized into the three frequency suites based on their peak ground acceleration-to-peak ground velocity ratio (PGA/PGV). By applying the three earthquake suites in the time-history analysis of the crane, drift ratio, internal forces, stresses, and strain were captured to examine its critical seismic response. The results demonstrated the effect of the frequency content on the seismic response of the crane. The LFES was found to cause drift responses averaging 114% and 480% and stress responses averaging 82% and 261%, which were higher than those of IFES and HFES. LFES, IFES, and HFES were found to exact inelastic demands on the crane above the PGA thresholds of 0.34 g, 0.80 g, and 1.99 g, respectively. The LFES was found to cause an uplift response that averaged 468% higher than that of IFES. The uplift caused by the HFES was observed to be inconsequential. Furthermore, it was found that the ground motions with low PGA/PGV ratio values had a larger damage potential on the container crane.
AB - This study examined the effect of earthquake frequency on the seismic response of a typical modern container crane. A time-history analysis was carried out on the crane using 93 real ground motion records to investigate its behavior. Also, an eigenvalue and a nonlinear pushover analysis were conducted to obtain the dynamic properties and assess the structural performance of the crane, respectively. Three earthquake suites categorized as low-frequency earthquake suite (LFES), intermediate frequency earthquake suite (IFES), and high-frequency earthquake suite (HFES) were considered in this study. The earthquakes were categorized into the three frequency suites based on their peak ground acceleration-to-peak ground velocity ratio (PGA/PGV). By applying the three earthquake suites in the time-history analysis of the crane, drift ratio, internal forces, stresses, and strain were captured to examine its critical seismic response. The results demonstrated the effect of the frequency content on the seismic response of the crane. The LFES was found to cause drift responses averaging 114% and 480% and stress responses averaging 82% and 261%, which were higher than those of IFES and HFES. LFES, IFES, and HFES were found to exact inelastic demands on the crane above the PGA thresholds of 0.34 g, 0.80 g, and 1.99 g, respectively. The LFES was found to cause an uplift response that averaged 468% higher than that of IFES. The uplift caused by the HFES was observed to be inconsequential. Furthermore, it was found that the ground motions with low PGA/PGV ratio values had a larger damage potential on the container crane.
KW - Container crane
KW - Drift ratio
KW - Frequency
KW - Ground motion
KW - Seismic response
KW - Structural performance
KW - Time-history analysis
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U2 - 10.1016/j.apor.2022.103270
DO - 10.1016/j.apor.2022.103270
M3 - Article
AN - SCOPUS:85134289880
SN - 0141-1187
VL - 126
JO - Applied Ocean Research
JF - Applied Ocean Research
M1 - 103270
ER -