【摘要】 针对导管架平台的初始设计阶段,提出了振动响应的简化计算方法。考虑主导管结构和支撑结构,将平台处理为底部固定的自由分布柔性体系,假定平台的质量和刚度沿高度线性分布,考虑导管架的一阶模态振动,采用模态分析方法,建立了导管架的广义振动方程,确定其等效质量、等效刚度和等效阻尼。在此基础上计算34m高导管架平台在波浪、海流及地震作用下的动力响应,并对该方法的适用性进行了讨论。更多还原

【Abstract】 The simplified calculation method of vibration response of jacket platform is put forward for the preliminary design phase. The general vibration of jacket platform is presented by mode analysis method with considering the main canal and structure. The platform is simplified into the distributed flexible sys tern fixed on the bottom with considering the first mode vibration,The equivalent mass,equivalent stiffness and equivalent damp are determined by assuming the linear distribution of mass and stiffness. The vibration response of 34 meters high jacket planet under the effect of the seas,ocean current and earthquake is calculated and the applicability of this method is discussed.更多还原