摘要
在原22000m3LPG船的基础上,进行了全面的优化设计,研发设计了满足最新规范规则要求的新一代21 000 m3LEG(液化乙烯)运输船。从结构设计着手,以21 000 m3LEG船为主要研究对象,从结构布置、规范校核、建造工艺等多方面进行了研究。对液化气船(C型舱)结构设计需要考虑的几个重点方面作出论述:船体梁结构强度计算校核,确定船体梁剖面模数;有限元直接强度计算,评估构件强度、疲劳寿命;全船振动分析和局部振动分析,确保船员的居住舒适性和船体构件的稳定可靠性;液化气船特有的船体结构温度场分析,得到温度分布并确定钢材级别等。对全船结构进行了大量优化改进工作,解决了设计中碰到的难点。推出一个优秀的设计方案,使该船结构更可靠,加工建造更为便利,提升了该船的市场竞争力。
On the basis of the original 22000m3 LPG carrier design, a comprehensive design optimization was carried out. As a result, a new generation of 21000m3 LEG （liquefied ethane gas） carrier that meets the latest rules and regulations is developed and designed. Initiating from the structural design of the 21000m3LEG ship as the main research object, the structural arrangement, rule check, construction process and other aspects have been researched. Several key aspects of the structural design of the LEG carrier （Type C tank） are discussed in this paper, which include hull girder strength calculation and determination of section modulus; direct strength calculation based on finite element method, structural member strength and fatigue life assessment; overall and local vibration analysis to ensure the accommodation comfort, as well as hull structure stability and reliability; and specific hull structure temperature field analysis for liquefied gas carriers to obtain temperature distribution and steel grade determination. Lots of structure optimization work has been done to solve the design difficulties. An outstanding design scheme is proposed hereto make the structure of the ship more reliable, the construction more convenient, the market competitiveness stronger.
出处
《船舶与海洋工程》
2015年第5期1-5,22,共6页
Naval Architecture and Ocean Engineering
基金
工信部联装[2013]412号
关键词
乙烯运输船
船体结构
优化设计
liquefied ethane gas carrier
hull structure
design optimization
