地震-台风耦合作用下近海导管架平台动力响应分析  

Dynamic Response Analysis of Offshore Jacket Platform under the Coupling Action of the Earthquake and Typhon

作　　者：金宇航 闫培雷[1] 郭恩栋[1] 吴厚礼 何润泽 王晓娜 Jin Yuhang;Yan Peilei;Guo Endong;Wu Houli;He Runze;Wang Xiaona(Key Laboratory of Earthquake and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China)

机构地区：[1]中国地震局工程力学研究所,中国地震局地震工程与工程振动重点实验室,哈尔滨150080

出　　处：《震灾防御技术》2022年第1期132-142,共11页Technology for Earthquake Disaster Prevention

基　　金：中国地震局地震工程与工程振动重点实验室重点专项(2019EEEVL0103-01)。

摘　　要：针对地震-台风耦合作用下的近海导管架海洋平台,运用Morison方程将台风对导管架平台的拖曳力及波浪对导管架平台的拖曳力和惯性力施加在结构上,并在基底施加地震动,建立地震-台风耦合作用下的运动方程。通过模态分析,确定结构的基本自振频率,进而选取卓越频率与该频率较为接近的海底地震动进行输入。对通过数值模型计算得到的导管架平台动力响应,参考相关文献中的限值,对耦合作用下的平台进行安全评估,给出了近海导管架海洋平台在地震-台风耦合作用下的损伤状态评定标准。本文关于导管架平台动力响应的统计结果,对导管架结构性态设计具有一定参考意义。In view of offshore jacket platform under the coupling action of earthquake and typhon,the drag force of typhon on the jacket platform and the drag force and inertial force of wave on the jacket platform are applied to the structure through Morison formu-lation,and the earthquake is applied to the base,establishing the equation of motion under the coupling action of earthquake and typhon.Through modal analysis,the basic natural frequency of the structure is determined,and the submarine ground motion with the dominant frequency close to this frequency is selected for input.For the dynamic response of the jacket platform calculated by the numerical mod-el,the safety assessment of the platform under the coupling effect is carried out with reference to the limit value in the corresponding lit-erature,and the evaluation criteria for damage status of offshore jacket offshore platforms under the coupling action of earthquake and typhoon are given.The statistics of the dynamic response results in this paper also have certain reference significance for the perform-ance-based design of jacket structure.

关 键 词：导管架平台 多灾耦合 动力响应 时程分析 评估指标 

分 类 号：P742[天文地球—海洋科学] TE95[石油与天然气工程—石油机械设备]