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首页> 外文会议>ASME International Conference on Ocean, Offshore and Arctic Engineering >STUDY OF OFFSHORE JACKET PLATFORM ATTACHED WITH TUNED LIQUID COLUMN GAS DAMPER
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STUDY OF OFFSHORE JACKET PLATFORM ATTACHED WITH TUNED LIQUID COLUMN GAS DAMPER

机译：调谐液柱气体阻尼器附近的海上夹克平台研究

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With increase in need of energy, scarcity of natural resources also increases. Need for energy has led the people to move into the ocean since they contain abundant natural resources. Offshore platforms play a major role in exploring and exploiting these resources. Jacket platform being a fixed offshore jacket platform is used in water depths 300 to 400 m. The study of behavior of these offshore structures is vital part in the design since they are subjected to dynamic loading of waves, wind, earthquake, ice etc. These structures in hostile environment are subjected to heavy loads. There is need for controlling the response of these structures. This can be achieved by providing external dampers. There are various dampers available to control the response of structures. Tuned liquid dampers (TLD)s and Tuned Liquid Column Damper (TLCD)s use liquid inside to tune its frequency to natural frequency of structure. Tuned Liquid Column Gas Damper (TLCGD) is latest version of dampers. It has a unique flexibility of tuning frequency compared to all other dampers. In the present study, jacket platform is modeled as Multi degree of freedom (MDOF) system. At later stage, for simplistic analysis, MDOF system is reduced to SDOF system using static condensation. Performance of TLCGD for both the systems is compared. Airy's wave theory is used for wave force excitation. Equations of motions for Jacket platform models attached with TLCGD are developed and solved using Newmarks β method in MATLAB. TLCGD is found to be very flexible in tuning the frequency and maximum reductions in response, 21.3% and 23.14% are observed at 0.3 MPa for MDOF and SDOF systems respectively. Work done shows that the results for MDOF and SDOF are comparable and hence, jacket as SDOF can be used for analysis for reducing the complexities.
机译：随着能源需求的增加，自然资源的稀缺也增加了。需要能量导致人们进入海洋，因为它们包含丰富的自然资源。海上平台在探索和利用这些资源方面发挥了重要作用。夹克平台是固定的海上夹套平台用于水深300至400米。这些海上结构的行为的研究是设计中的重要组成部分，因为它们受到波浪，风，地震，冰等的动态负荷。这些结构在敌对环境中受到重载。需要控制这些结构的响应。这可以通过提供外部阻尼器来实现。有各种阻尼器可用于控制结构的响应。调谐液体阻尼器（TLD）和调谐液柱阻尼器（TLCD）使用液体，将其频率调谐到结构的固有频率。调谐液柱气体阻尼器（TLCGD）是最新版本的阻尼器。与所有其他阻尼器相比，它具有独特的调谐频率灵活性。在本研究中，夹克平台被建模为多自由度（MDOF）系统。在稍后阶段，为了简单分析，MDOF系统使用静态凝结来减少到SDOF系统。比较两个系统的TLCGD的性能。 Airy的波浪理论用于波力激励。使用TLCGD附加的夹克平台模型的动作方程，并在Matlab中使用Newmarksβ方法进行开发和解决。发现TLCGD在调整响应时的频率和最大减少方面非常灵活，分别在0.3MPa和SDOF系统中观察到21.3％和23.14％。工作完成表明，MDOF和SDOF的结果是可比的，因此，作为SDOF的夹克可用于降低复杂性的分析。

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