可拼装框架式超大型浮体概念设计及其水动力响应计算

发布时间：2018-01-12 03:28

本文关键词：可拼装框架式超大型浮体概念设计及其水动力响应计算　出处：《燕山大学》2016年硕士论文　论文类型：学位论文

【摘要】：超大型浮式结构(Very Large Floating Structure,VLFS)是发达国家拓展深海空间发展的重点工程技术,我国在此方面做了大量研究,当前东海及南海事件再次要求我们必须重视并加强对此技术的深入研究。本文在对现有国内外超大型浮式结构技术分析和研究的基础上,针对深远海海况及军民两用等需求,结合UHPC(Ultra High Performance Concrete)—钢组合技术,提出了可拼装框架式超大型浮体单元形式,参照Det norske Veritas准则,以框架式单元为基础拼装成框架式浮体单体,并从主尺度、材料选取及耐久性预测方面对框架式单体进行概念设计。利用AQWA有限元软件对所设计的结构单体在不同海况、不同海洋环境力等严酷条件作用下水动力响应、静稳性及系泊张力响应进行数值模拟分析,与欧美发达国家提出的离岸式浮式基地(Mobil Offshore Base,MOB)单体进行了对比。结果表明:在百年一遇海况下,框架式浮体单体的横荡、纵荡、横摇、纵摇响应值比MOB单体分别低15%、27%、5%、30%,一年一遇海况条件下,其值分别低45%、53%、9.8%、17%,表现出更优的水动力响应;框架式浮体单体在恢复静平衡过程中迭代次数也比MOB单体少,具有更好的的静稳性。框架式浮体的系泊线张力响应比MOB单体系泊张力;系泊线安全系数均大于1.67,表明系泊线张力上均满足API RP 2SK规范要求。
[Abstract]:Very large floating structure (Very Large Floating Structure, VLFS) is a key project in developed countries to expand deep space development, done a lot of research in our country, the East China Sea and South China Sea again we must pay attention to and strengthen the technology research. Based on the very large floating structure and technical analysis Study on the existing domestic and abroad, aiming at the deep sea and sea of dual-use demand, combined with UHPC (Ultra High Performance Concrete) - steel composite technology, put forward can be assembled frame type VLFS unit type, according to the Det Norske Veritas criterion, frame unit based assembled frame type single floating body from the main body, and scale, material selection and durability prediction of conceptual design of frame type of monomers. The structure of the monomer in different sea conditions by using the finite element software AQWA in different sea Ocean environment and harsh conditions under the action of dynamic response, static stability and mooring tension response were analyzed by numerical simulation, the offshore floating base is put forward and developed countries in Europe and America (Mobil Offshore, Base, MOB) were compared. The results show that the monomer in the hundred years of sea conditions, the frame type floating body monomer sway, surge, sway, heave response value than MOB monomer were 15%, 27%, 5%, 30% years, a sea condition, the values are low 45%, 53%, 9.8%, 17%, showed more excellent hydrodynamic response; frame type floating body monomer in the iterative restoration Jing Ping Heng times in the process than the MOB monomer, static stability is better. The tension of mooring line frame type floating body response than MOB single tension mooring system; mooring line safety coefficient is greater than 1.67, showed that the tension of mooring line meets API RP 2SK specification.

【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：P75

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