三峡升船机结构的风载可靠性分析
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摘要
研究了三峡升船机结构的风载可靠性分析方法．采用极值分布模型模拟风的年l0min平均最大风速记录，确定了风荷载的概率模型根据人体反应，确定无感振动作为首次穿越分析的基本状态．假定结构响应和控制点的极限值是随机变量，利用Rosenblatt变换为正态分布，从而求出结构的可靠度，并利用Monte-Carlo模拟方法作了对比分析．
This paper studies the reliability analysis of shiplifting structure of Three Corges under wind load. Differentextreme asymptotic distribution models are used to create the probability model of wind to simulate the annual 10minute maximum wind speed. According to the human response, imperceptible vibration is selected as the foot state offirst excursion. Assuming the structural response and the limit respoase of key point as random variables, Rosenblatttransform is used for nounal distributions to calculate the structural reliability. Moreover Monte-Carlo simulationmethod is presented for comparison.
This paper studies the reliability analysis of shiplifting structure of Three Corges under wind load. Differentextreme asymptotic distribution models are used to create the probability model of wind to simulate the annual 10minute maximum wind speed. According to the human response, imperceptible vibration is selected as the foot state offirst excursion. Assuming the structural response and the limit respoase of key point as random variables, Rosenblatttransform is used for nounal distributions to calculate the structural reliability. Moreover Monte-Carlo simulationmethod is presented for comparison.
引文
1李桂青,曹宏.高耸结构在风荷载作用下的动力可靠度分析土木工程学报,1987(l):57-64
2 Emil Simiu,Robert H Scanlan.风对结构的作用──风工程导论.刘尚培,项海帆,谢霁明译.上海:同济大学出版社,l992 66-70
3 Davenport A C The spectrum of horizontal gustiness near the ground in high winds J Royal Meteorol Soc,1961,87:194-211
4 Davenport A G. The dependence of wind load upon meteorological parameters.In:Davenport A G,et.Proceeding of International Research Seminaron Wind Effects on Building and Structures. Toronto: University of Torooto, 1968 19- 82
5 Michele D Metarangno Wind in architectural and environmental design, New York: Van Nostrand Reinhold Company,1982. 261-262
6洪华生,邓汉忠.工程规划与设计中的概率概念:第Ⅱ卷.孙芳垂,陈星煮,顾子聪译.北京:冶金出版社,1991.680-690
7 Clough R W,Penzien J.Dynamics of structures,2nd ed.New Youk:Mcgraw-Hill Inc,1993.87-96
8蒋溥,梁小华,雷军.工程地震动时程合成与模拟.北京:地震出版社,l991.26-33
2 Emil Simiu,Robert H Scanlan.风对结构的作用──风工程导论.刘尚培,项海帆,谢霁明译.上海:同济大学出版社,l992 66-70
3 Davenport A C The spectrum of horizontal gustiness near the ground in high winds J Royal Meteorol Soc,1961,87:194-211
4 Davenport A G. The dependence of wind load upon meteorological parameters.In:Davenport A G,et.Proceeding of International Research Seminaron Wind Effects on Building and Structures. Toronto: University of Torooto, 1968 19- 82
5 Michele D Metarangno Wind in architectural and environmental design, New York: Van Nostrand Reinhold Company,1982. 261-262
6洪华生,邓汉忠.工程规划与设计中的概率概念:第Ⅱ卷.孙芳垂,陈星煮,顾子聪译.北京:冶金出版社,1991.680-690
7 Clough R W,Penzien J.Dynamics of structures,2nd ed.New Youk:Mcgraw-Hill Inc,1993.87-96
8蒋溥,梁小华,雷军.工程地震动时程合成与模拟.北京:地震出版社,l991.26-33
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