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According to the Rayleigh damping coefficients based on the dynamic simulation analysis of a quayside container crane (QCC), the calculation and frequency selection for QCC type structures are improved through comparative analysis of similar models and simulation results; these models consider the boundary constraints of QCC and the calculation method of damping coefficients, but there is no consensus on the best methodology to use. The dynamic response of the QCC structure under different Rayleigh damping coefficients is compared and analysed by simulation and shaking table tests. The results show that the damping coefficient calculation method and frequency selection on the seismic response of the QCC structure increases with increased seismic acceleration. When the acceleration peak is 0.4 g and 0.62 g, the average error between the simulation result and the test value obtained by the existing damping coefficient calculation method exceeds 20%. In contrast, the error between the simulation result and the test value is within 10% when using the improved damping coefficient calculation method.

Calculating the Rayleigh damping coefficient under seismic dynamic simulation of a quayside container crane