Collaborative Research: Fundamental Mechanics and Conditional Probabilities for Prediction of Hurricane Surge and Wave Loads on Elevated Coastal Structures

合作研究：预测飓风潮和高架海岸结构波浪载荷的基本力学和条件概率

• 批准号: 1266101
• 负责人: John van de Lindt
• 金额: $ 14万
• 依托单位: Colorado State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-06-01 至 2016-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1266101&HistoricalAwards=false
• 关键词: Collaborative; Research; Fundamental; Mechanics; Conditional

Damage to coastal structures as a result of combined surge and wave loading has been significant in recent events such as Hurricane Ivan (2004), Katrina (2005) and Ike (2008) and most recently Sandy (2012). There is over $3T in built infrastructure along the US East and Gulf coasts, and elevated structures along coastal areas are becoming more commonplace as building stakeholders seek to mitigate damage and risk of property and structure loss. Currently, there are no accurate mechanics equations to compute the forces for combined surge and wave on these types of elevated structures and no comprehensive method to consistently account for the variability (uncertainty) in the random nature of the incoming waves. This project will pursue research that focuses on the impact of hurricane surge and wave loads on elevated coastal structures. The ultimate goal is to understand and quantify surge and wave loads on buildings and structures that can be used to mitigate damage to the coastal structures. A theoretical approach based on physics will be used to model the interaction between the water and coastal structure. The analytical formulation will be validated through small scale experimental testing in a wave tank. Storm surge and wave impacts will be formulated on a probabilistic basis. The results of the research can lead to performance based requirements in building standards.This collaborative project between research teams at Oregon State University and Colorado State University will combine expertise in coastal engineering and structural engineering to develop a fundamental understanding and modeling of hurricane surge and wave loads on elevated structures. The goal is to mitigate damages to shoreline infrastructures from extreme coastal storms. The analytical formulation will be built on Goda's method for calculating surge forces on elevated coastal structures and will be extended to incorporate wave forces. A probabilistic approach will be taken to combine surge and wave loads. Hydrodynamic hurricane wave and structure interaction will be used to formulate loading on these types of structures. The formulation will be validated with experiments on small scale structure models using a wave tank. The collaborative project will contribute to understanding of wave and surge loads and develop predictive equations for uplift, impact and overturning loads on elevated structures.

在最近的事件中，如飓风Ivan（2004），Katrina（2005）和Ike（2008）和最近的Sandy（2012）等最近事件，沿海结构的损害对沿海结构的损害显着。 在美国东部和墨西哥湾沿岸的建筑基础设施中，沿海地区的建筑基础设施有超过3T，随着建筑利益相关者寻求减轻财产和结构损失的风险，沿海地区的建筑物越来越普遍。 当前，没有精确的力学方程来计算这些类型的高架结构的组合力和波浪的力，也没有综合方法来始终如一地考虑传入波的随机性质的可变性（不确定性）。该项目将进行研究，重点是飓风激增和波浪负荷对沿海结构的影响。 最终目标是了解和量化建筑物和结构上的浪涌和波动载荷，可用于减轻对沿海结构的损害。基于物理学的理论方法将用于对水与沿海结构之间的相互作用进行建模。分析公式将通过波罐中的小规模实验测试来验证。风暴潮和波浪影响将以概率为基础。该研究的结果可能会导致建筑标准的基于绩效的要求。这项协作项目在俄勒冈州立大学和科罗拉多州立大学的研究团队之间的协作项目将结合沿海工程和结构工程方面的专业知识，以发展飓风激增的基本理解和建模高架结构上的负载。目的是减轻极端沿海风暴的海岸线基础设施的损害。 分析公式将建立在Goda的方法上，用于计算高架沿海结构上的激发力，并将扩展以结合波力。将采用一种概率方法来结合浪涌和波量。流体动力学波浪和结构相互作用将用于在这些类型的结构上制定负载。该公式将通过使用波罐在小规模结构模型上进行实验来验证。该协作项目将有助于理解波浪和激增负载，并为提升，影响和推翻高架结构的载荷开发预测方程。