Collaborative Research: Damage Assessment of Coastal Structures Subject to Waterborne Debris Impact under Extreme Wind and Wave Conditions

合作研究：极端风浪条件下遭受水生碎片冲击的海岸结构的损坏评估

• 批准号: 2212712
• 负责人: Ali Farhadzadeh
• 金额: $ 26.71万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-09-01 至 2025-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2212712&HistoricalAwards=false
• 关键词: Collaborative; Research; Damage; Assessment; Coastal

With rising sea-levels and more frequent weather-related extreme events, coastal civil infrastructure and communities are becoming more flood-prone and consequently subject to an elevated risk of damage and destruction. Among the various flood-related risks, flood-borne debris can be destructive to coastal infrastructure (e.g., buildings, houses, and bridges). Such debris (e.g. trees, cars, and ships) are carried by floods and waves, often in combination with extreme wind gusts. Currently, there is a significant gap in understanding and modeling the key physical processes associated with flood-borne debris. This project will provide a science-based approach to understand and predict the flood-borne debris damages to structures under extreme flood flow and wind conditions. The research will also be complemented by an educational component that includes workshops, curriculum development, and training demonstrations. The educational program will be designed to have positive and measurable impact on a broad spectrum of students (ranging from high school to graduate students), foster an increased participation among minority and underrepresented groups, and inform students of the novel research and diverse cultures of the three participating institutions, i.e., Columbia University, SUNY at Stony Brook, and CUNY City College. This award will contribute to the National Science Foundation (NSF) role in the National Windstorm Impact Reduction Program (NWIRP). The overarching goal of this research is to understand and quantify the critical mechanics processes involved in water-wind-debris-structure interactions, including debris drifting by extreme flow and wind conditions, debris collision with the structure, and the resulting damages. A multidisciplinary approach employing computational fluid dynamics, computational solid mechanics, and laboratory experiments will be used to achieve this goal. Specific research tasks include: (1) innovative experiments deploying “smart debris” to investigate wind and transport effects of flood-borne debris and their impact/damage to structures, (2) new computational methods and software for an integrated simulation of debris drifting, impingement, and damage to structures, and (3) novel physics-based fragility curves, at the system level, for structural failure risk assessment due to debris impacts. In the long term, this research can lead to enhanced designs and mitigation strategies for structures susceptible to the impact of flood and debris, advancing the well-being of the public through development of resilient coastlines and communities. Project data will be archived and made publicly available in campus data repositories and in the NSF-supported Natural Hazards Engineering Research Infrastructure Data Depot (https://www.DesignSafe-ci.org).This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

随着海平面的上升和与天气相关的更频繁的事件，沿海民用基础设施正在成为更多的人，并且在各种洪水相关的风险中遭受损害和破坏的风险升高。汽车和船舶）是D波，通常与极端的阵风结合使用。极端的流动条件。哥伦比亚大学Brook和Cuny City College。在杂交结构的相互作用中，将碎片置于极端流和风条件下，碎片与结构碰撞，由此产生的损坏将包括：（1）部署“智能部署”洪水运输效果的创新实验 - 生长碎片以及对结构的影响/损害，用于杂物集成模拟的新计算方法和软件，以及对结构的损害，以及（3）在系统级别上，基于物理的脆弱性曲线，用于结构性故障风险评估。由于碎片的影响，长期影响了洪水和碎片的影响，促进了弹性海岸线和社区的公众福祉。 org）。该奖项反映了NSF'SF'SF'sFly的使命，并被认为是值得通过Toundation的知识分子优点和更广泛影响的评论标准来评估值得支持的。