某濒海结构振动特性及其振动控制实验

针对某大型半潜式濒海结构波激振动现象,分析了考虑流固耦合效应以后该结构的振动模态,找到了引起该结构发生波激振动的原因.为了控制其波激振动,应用深水调谐液体阻尼器方法对该结构的振动控制进行了实验.结果表明,该方法能明显抑制其主要模态（即第一阶模态）的振动,可以应用于该结构的振动控制.应用深水调谐液体阻尼器可以对某些濒海洞库防护门进行振动控制.

Vibration characteristics of semi -submarine off shore structure and experiment on its vibration control

Aiming at the vibration of a big semi-submarine vertical framework caused by sea-wave,the vibration modes with fluid-solid coupling effect was analyzed firstly.Then,the cause for the vibration of the structure was found.In order to control its vibration,a deep-water tuned liquid damper was designed and applied to the control of its vibration experimentally.The experiment result shows that the method mentioned above can obviously restrain its main mode(i.e.the first order vibration mode) vibration,and can be applied to controlling vibration of the structure.So it is practical to control the vibration of the sea-side defense-gate by using the deep-water tuned liquid damper.