导管架平台结构在动荷载作用下的减振研究及其工程实例分析

INVESTIGATION OF VIBRATION REDUCTION OF JACKET PLATFORMS SUBJECTED TO DYNAMIC LOADING AND ANALYSIS OF AN ILLUSTRATIVE EXAMPLE

本文分析了结构动力响应的特点,从而建立进行刚度分布优化的初步概念。在须保证原结构基本型式下,可通过改变局部刚度(改变构件尺寸或布置特殊弹性装置),以达到优化振型、减小结构动态响应的目的。通过某渤海导管架的实例分析,表明这一方法是行之有效的。

The primary concept of stiffness distribution optimization is established inthis paper according to the features of dynamic responses of structures. In thecase of remaining the original forms of structures, the purpose of reducingstructural dynamic responses is realized by optimizing the shapes of vibrationmodes with the aid of adjusting local stiffness of the structure,such as chang-ing the element sizes and equipping with some particular elastic systems. Theapproach and its efficiency are illustrated by a Bohai jacket.