Experimental Study on a Tuned-Mass Damper of Offshore for Vibration Reduction
Experimental Study on a Tuned-Mass Damper of Offshore for Vibration Reduction
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DOI：
10.1088/1742-6596/744/1/012045
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发表时间：
2016-09
期刊：
影响因子：
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通讯作者：
Qiong Wu;Xilu Zhao;R. Zheng
中科院分区：
文献类型：
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作者：
Qiong Wu;Xilu Zhao;R. Zheng
随着工业的发展，海洋石油生产是最重要的能源之一。通常情况下，海洋平台处于恶劣的环境中，容易受到风、浪、冰、地震等不稳定环境载荷的作用，确保平台的稳定性成为工程安全运行的关键问题。近年来，调谐质量阻尼器(TMD)技术被用来减小风和地震作用下的振动。由于地震激励的复杂性，以往的研究主要集中在结构在风荷载作用下的反应控制上，而对地震反应控制的研究较少。因此，本文主要研究海洋平台应用TMD系统的减震效果，并进行了全面的试验研究，以验证其在不同地震作用下的减震效果。按照约1：200的实际尺寸建造了一个四柱式海洋平台，并为实验准备了TMD系统。通过不同的性能分析，实验结果表明，所提出的TMD系统可以有效地抑制地震激励，保持海洋平台的稳定性。
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.