程远胜, 曾广武. 非概率不确定性及其对船舶坐墩配墩优化的影响[J]. 工程力学, 2003, 20(3): 129-133.
引用本文: 程远胜, 曾广武. 非概率不确定性及其对船舶坐墩配墩优化的影响[J]. 工程力学, 2003, 20(3): 129-133.
CHENG Yuan-sheng, ZENG Guang-wu. NON-PROBABILISTIC UNCERTAINTIES AND THEIR EFFECTS ON OPTIMIZATION OF DOCKING BLOCKS[J]. Engineering Mechanics, 2003, 20(3): 129-133.
Citation: CHENG Yuan-sheng, ZENG Guang-wu. NON-PROBABILISTIC UNCERTAINTIES AND THEIR EFFECTS ON OPTIMIZATION OF DOCKING BLOCKS[J]. Engineering Mechanics, 2003, 20(3): 129-133.

非概率不确定性及其对船舶坐墩配墩优化的影响

NON-PROBABILISTIC UNCERTAINTIES AND THEIR EFFECTS ON OPTIMIZATION OF DOCKING BLOCKS

  • 摘要: 讨论了船舶坐墩配墩设计中存在的非概率不确定性及其描述。提出了一个非概率不确定性条件下船舶坐墩支墩配置优化设计的数学模型。着重分析了船体梁载荷和支墩组合刚度不确定性对设计结果的影响。计算结果表明,考虑参数不确定性后,配墩方案发生了变化,支墩结构重量也有所增加。增加的支墩材料是用于提高结构物抵抗不确定性参数波动变化的能力。相对于船体梁载荷不确定性,支墩组合刚度不确定性对设计结果的影响较大。

     

    Abstract: In this paper, non-probabilistic uncertainties in design of docking blocks are discussed. A mathematical model is proposed for optimization of docking blocks with uncertain ship girder loads and combined stiffnesses of docking blocks considered. Emphasis is placed on effects of non-probabilistic uncertainties in ship girder loads and combined stiffnesses of docking blocks on optimal solution. Numerical results show that uncertainties considered affect the optimization of docking blocks and lead to increase in weights of blocks. Increased weights are utilized to increase the resistance of the structure to variation of uncertain variables. The effect of uncertain combined stiffnesses of blocks on design is larger than that of ship girder loads with uncertainty.

     

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