Study on Seismic Response Control for Container Crane Using Viscous Dampers

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (12) : 171-176.

Wang Gong-xian Wang Yang-yang Hu Yong Wang Dong

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Abstract

In this paper a seismic method of container crane based on the principle of energy dissipation is proposed, that is four viscous dampers are installed between lateral beam and the leg to mitigate earthquake energy, which is used to improve the seismic performance of container crane. The equivalent single degree of freedom model of the container crane is presented. Through the establishment of the equivalent single degree of freedom mechanical model of container crane with dampers, the equivalent damping and stiffness of energy dissipation structure are deduced. Compared with the finite element model, it shows that the equivalent model is effective and credible. Optimization method based on displacement and energy dissipation ratio are proposed to optimize damping of dampers and stiffness of rods. The displacement of energy dissipation structure of container crane under different earthquake excitations are analyzed. The result shows that the seismic method of container crane proposed in this paper can effectively dissipate the seismic energy and reduce the displacement response of structure whose decreasing amplitude ratio reach 46.18%, is effective.

Key words

container crane / viscous damper / equivalent model / seismic performance

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Wang Gong-xian Wang Yang-yang Hu Yong Wang Dong . Study on Seismic Response Control for Container Crane Using Viscous Dampers[J]. Journal of Vibration and Shock, 2016, 35(12): 171-176

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