深水桩基导管架平台随机波浪动力响应分析

Wave Dynamic Response Analysis for Deep Water Pile Foundation Jacket Platform

海洋桩基导管架平台是海洋石油生产中应用最广的一种结构。随着平台工作水深的增加，平台结构自振周期变大，其自振频率可能同波浪能量集中的频率范围接近，从而使结构产生较大的动力响应。应用随机波浪分析方法，对一座200米水深桩基导管架平台在波浪90度方向入射的操作工况，进行了波浪动力响应分析。通过动力计算与静力计算的结果比较，表明深水桩基导管架平台对波浪动力响应比较显著。在深水导管架设计中应对波浪动力响应予以关注。

The pile foundation jacket platform is one kind of fixed structures widely used in the development of offshore oil resources. As the water depth for this type of structure becomes deeper, the platform tends to be more flexible. When the structure nature period is close to the wave period, the structure will generate prominent dynamic response, in this paper the random wave method is used to study the wave dynamic response for a pile foundation jacket platform in deep water with a depth of 200 meters. A comparison between the static and the dynamic loads generated by the wave is made and it is t＇ound that the dynamic response is very dominant. As a result, one should pay more attention to the wave dynamic response in the deeper water fixed structure design.