Stochastic Modeling and Analyses of Long-Span Bridges in Turbulent Winds

湍流风中大跨度桥梁的随机建模与分析

• 批准号: 8607183
• 负责人: Y.K. Lin
• 金额: $ 15.81万
• 依托单位: Florida Atlantic University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1986
• 资助国家: 美国
• 起止时间: 1986-06-15 至 1988-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8607183&HistoricalAwards=false
• 关键词: Stochastic; Modeling; Analyses; Long; Span

The purpose of this work is to develop a new, experimentally verifiable method to predict opssible motion instabilities of suspension or cable-stayed bridges in a strong turbulent wind environment. Random vibration mathematical methods will be used, including in the analysis the treatment of buffeting and self-excited loads as random processes. Linear and non-linear fluid/structure interaction models will be considered together with evaluation of their applicability to diverse structural forms. The results will be compared with experimental data from many sources.

这项工作的目的是开发一种新的，实验验证的方法来预测在强湍流风环境中悬索桥或斜拉桥的可能运动不稳定性。将使用随机振动数学方法，包括在分析中将抖振和自激载荷作为随机过程处理。将考虑线性和非线性流体/结构相互作用模型，并评估它们对不同结构形式的适用性。结果将与许多来源的实验数据进行比较。