摘要
研究了同时考虑拱坝“体积最小”和“最大拉应力最小”的两目标优化设计 .采用线性加权的统一目标法求得非劣解集后 ,利用模糊贴近度从中选取最优解 ,讨论了不同隶属度和贴近度公式的影响 ,给出了最优解的简便几何求法 .某拱坝算例分析说明本文方法有效 ,并显示了两目标优化体形的一些可供设计参考的体形特征 .
Bin objective shape optimization of arch dams is discussed to minmize both dam volume and maximal tensile stress. After obtaining the non inferior solutions by unified objective method with linear weight, the optimal solution is selected according to fuzzy closeness degree. The influence of different formulas of membership and closeness degree is discussed, and a simple geometric method for optimal solution is pressented. An engineering example indicates the effectiveness of the present method and some shape features of bin objective optimized arch dam.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
2000年第3期39-43,共5页
Journal of Hohai University(Natural Sciences)
基金
国家"九五"科技攻关项目 !(96 2 2 1 0 4 0 1) .
关键词
拱坝
优化设计
非劣荽
模糊贴近度
两目标优化
arch dam
optimum design
non inferior solution
fuzzy closeness degree
