大型油船码头靠船墩导管架结构应力分析

Stress Analysis of Breasting Dolphin Jacket Structure of Large Oil Tank Terminal

以开敞水域百米水深的30万吨级油船码头靠船墩结构为研究对象,对导管架结构在环境载荷和船舶载荷作用下的应力开展分析。借鉴海洋油气导管架平台结构形式,结合靠船墩导管架结构主要承受水平船舶载荷的特性设计八腿柱、裙桩基础的靠船墩导管架结构形式。采用Ansys有限元软件建立结构分析模型,根据环境条件、载荷组合等参数对靠船墩导管架结构进行4种不同工况下的静力分析。分析结果显示,在船舶靠泊工况下导管架结构位移和应力达最大值,主要出现在近泥面处主腿柱位置,结构应力满足许用应力要求。研究结果表明百米水深大型油船码头采用导管架结构具有一定的可行性,可为深水油船码头结构选型和设计提供一定的参考。

The stress of the breasting dolphin jacket of a 300000 t oil tank terminal is analyzed under the effects of environments and ship loads in an open water area with water depth of 100 m.Taken inspiration from offshore oil and gas jacket platform structures and combined with the characteristics that the breasting dolphin jacket structure mainly bears horizontal ship loads,the structure of the breasting dolphin jacket with eight-leg columns and skirt pile foundations is designed.The finite element software Ansys is used to establish the structural analysis model and the static analyses of the breasting dolphin jacket structure are conducted under four different working conditions based on environmental conditions and load combinations.The results show that the displacement and stress of the jacket structure reach the maximum during ship berthing,mainly appearing at the position of the main leg column near the mud surface and the structural stress satisfies the allowable stress requirements.The research indicates that using a jacket structure for a large oil tanker terminal with water depth of 100 m is feasible,and it provides valuable insights for the selection and design of deepwater oil tanker terminal structures.