摘要
以1艘超大型FPSO为例,介绍管廊模块总体布置和基本设计、详细设计成果,分析了所属公司的企业标准、船级社规范对管廊模块和甲板支墩结构设计的要求。管廊模块结构设计计入了FPSO(海上浮式生产储油卸油装置)船体总纵弯曲对甲板支墩边界条件的影响。在管廊模块和上部模块之间设横向销连接,借助上部模块的横向支撑刚度,有利于控制管廊模块和甲板支墩的结构自重。FPSO工程设计开展了上部模块油气泄漏扩散、燃爆连锁风险定量分析,确定了管廊模块和甲板支墩各处的设计爆炸超压。运用有限元方法分析了管廊模块甲板支墩和FPSO主甲板结构抗爆炸事故工况的强度。分别基于累积损伤的简化疲劳分析方法和谱分析方法,预报了管廊模块甲板支墩结构的疲劳寿命。
This paper introduces the general layout,basic design and detailed design results of the pipe rack on a super large FPSO,and analyzes the requirements of the Oil Company's General Specifications and Classification Society's Rules for the structural design of pipe rack and hull stool.The influence of the longitudinal bending of FPSO hull on the boundary condition of hull stool is taken into account in the structural design of pipe rack.Transverse pin connection is set between the pipe rack and the topside module to control the weight of the pipe rack and the hull stool with the aid of the transverse support stiffness of the topside module.In the engineering design of FPSO,the quantitative risk analysis of oil and gas leakage and deflagration chain hazards of the topside module is carried out,and the design explosion overpressure of the pipe rack and hull stool is determined.The strength of the hull stool of pipe rack and FPSO main deck under blast accident is analyzed by using the finite element method.Based on the simplified fatigue analysis method and spectral analysis method of cumulative fatigue damage,the fatigue life of the hull stool of pipe rack is predicted.
作者
徐田甜
Xu Tiantian(CNOOC Limited,Tianjin Branch,Tianjin,300459)
出处
《石油化工设计》
CAS
2021年第2期62-68,I0004,共8页
Petrochemical Design
关键词
FPSO
管廊模块
甲板支墩
结构分析
爆炸
疲劳
FPSO
pipe rack module
hull stool
structural analysis
explosion
fatigue
