导管架式海洋平台Pall型摩擦阻尼控制研究

笔者考虑几何非线性,首次提出了适用于海洋平台结构的Pall型摩擦阻尼器的一种新型应用方式,对安装Pall型摩擦阻尼器的不同坡度的等腰梯形框架进行了有限元分析,采用ANSYS程序对该Pall型摩擦阻尼器的滞回特性和力学特性进行了详细的分析.分析结果表明安装Pall型摩擦阻尼器能有效减小动荷载作用下的最大位移,并且大大提高框架的耗能能力,证明了这种新型Pall型摩擦阻尼器与原Pall摩擦阻尼器具有同样的耗能能力.最后,将这种摩擦阻尼器放置在海洋平台结构中,分析了此种摩擦阻尼器在海洋平台结构中的减震效果.

Research on Vibration Control of Ocean Platform with Pall-Typed Frictional Dampers

Considering geometric nonlinearity, this paper puts forward a new type of applica- tion of the Pall-typed friction damper for ocean platform structures for the first time. The different slopes of isosceles trapezoid frameworks with Pall-typed friction dampers are analyzed by finite element analysis in detail. The Pall-typed friction damper hysteretic characteristics and mechanical properties are analyzed by using the ANSYS program. The results show that the installation of Pall-typed friction dampers can effectively reduce the displacement of structures and enhance greatly the energy dissipation of ocean platform structures. And it proves that the new Pall-typed friction dampers have the same energy dissipation as the original Pall dampers. The results show that the Pall-typed frictional damping ocean platform structures can reduce the vibrations of ocean platform structures.