Regular Article

Damping coefficient calculation method for shore-side container cranes under the seismic conditions

¹ School of Mechanical Engineering, Hubei University of Technology, Wuhan 430068, China
² School of Railway Locomotive and Vehicle, Wuhan Railway Vocational College of Technology, Wuhan 430205, China
³ School of Mechanical Engineering, Yangtze University, Jingzhou 434023, China

^* e-mail: 20190134@wru.edu.cn

Received: 27 December 2021
Accepted: 18 March 2023

Abstract

Shore-side container cranes (SCC) are widely used in ship loading and unloading. However, the SCC is often damaged by the seismic wave shock. In seismic response analysis, the setting of damping coefficients has a large impact on the accuracy of the calculation results. In order to better design the SCC mechanical performance, the improved damping coefficient calculation method is proposed. The results of the simulation and the experiment are compared under the different seismic conditions. The results show that the influence of the damping coefficient calculation method on the SCC seismic response increases with strengthened seismic intensity. When the peak acceleration is small, the simulation results under different damping coefficients are almost the same and are close to the experiment values. When the peak acceleration is large, only the error between the simulation results obtained by the improved method and the experimental values is less than 5%. It is thus concluded that the improved damping coefficient calculation method is accurate and reliable.