Multi-objective fuzzy optimum design based on reliability for offshore jacket platforms

被引：0
|
作者：
Kang, HG [1 ]
Liu, W
Zhai, GJ
Xu, FC
Feng, S
机构：
[1] Dalian Univ Technol, State Key Lab Coastal & Offshore Engn, Dalian 116024, Peoples R China
[2] Dalian Marine Univ, Dalian 116024, Peoples R China
来源：
CHINA OCEAN ENGINEERING | 2001年 / 15卷 / 04期
关键词：
offshore jacket platform; fuzzy constraint; tolerance coefficient; structural reliability;
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In consideration of the fuzzy constraint boundary and through analysis of structural reliability, a model of structural fuzzy optimum design is established based on reliability for offshore jacket platforms. According to the characteristics of offshore jacket platforms, the tolerance coefficient of the constraint boundary is determined with the fuzzy optimization method. The optimum level cut set lambda*, which is the intersection of the fuzzy constraint set and fuzzy objective set, is determined with the bound search method, and then the fuzzy optimum solution to the fuzzy optimization problem is obtained. The central offshore platform SZ36-1 is designed with the fuzzy optimum model based on reliability; the results are compared with those from deterministic optimum design and fuzzy optimum design. The tendency of design variables in the above three methods and its reasons are analyzed. The results of an example show that the fuzzy optimum design based on reliability is stable and reliable.
引用
收藏
页码：467 / 477
页数：11
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