Experimental Study on a Tuned-Mass Damper of Offshore for Vibration Reduction

13th International Conference on Motion and Vibration Control; 12th International Conference on Recent Advances in Structural Dynamics

Wu, Qiong^1 ; Zhao, Xilu^1 ; Zheng, Rencheng^2

College of Mechanical Engineering, Saitama Institute of Technology, Saitama

369-0293, Japan^1

Institute of Industrial Science, University of Tokyo, Tokyo

153-8505, Japan^2

关键词: Earthquake excitation;    Earthquake response;    Engineering operation;    Environmental loadings;    Hostile environments;    Off shore platforms;    Performance analysis;    Vibration reductions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/744/1/012045/pdf
DOI  :  10.1088/1742-6596/744/1/012045

来源: IOP

【 摘 要 】

With the development of industry, oceanic oil production is one of the most important energy resources. Normally, offshore platform, located in the hostile environment, is easily subjected to unstable environmental loading, such as wind, wave, ice, and earthquake, and it becomes a critical problem to ensure the stability of offshore platform for safely engineering operations. In recent years, tuned-mass damper (TMD) technology has been adopted to reduce vibrations from wind and earthquake influences. Due to the complexity of earthquake excitations, most of researchers were focused on controlling response of structures under wind loads; however, less attention has been put on controlling earthquake response. Therefore, this study concentrates on the seismic reduction of offshore platform by application of a TMD system, and a comprehensively experimental study was processed to validate its effectiveness exposed to different earthquake. A 4-column offshore platform was built according to the actual size of approximately 1:200 ratios, and a TMD system was prepared for the experiment. By the different performance analyses, experimental results indicated that the proposed TMD system can effectively suppress the earthquake stimulus and keep the stability of offshore platform.