CAREER: Enhancing Hurricane Resistance of Building Exteriors (Envelopes) under Urban Development in a Changing Climate

职业：在气候变化的城市发展中增强建筑外墙（围护结构）的抗飓风能力

• 批准号: 2340214
• 负责人: Yanlin Guo
• 金额: $ 54.29万
• 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: 2024
• 资助国家: 美国
• 起止时间: 2024-07-01 至 2029-06-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2340214&HistoricalAwards=false
• 关键词: CAREER; Enhancing; Hurricane; Resistance; Building

Wind damage during hurricanes can be catastrophic to a building’s exterior (e.g., glass facades and windowpanes). Failure of the building exterior can lead to cascading water intrusion, extensive interior damage, and disruption to businesses. The cost of repair resulting from such damage can be significant. High- and mid-rise buildings are designed to last for decades. During a building’s lifespan, urbanization and climate change pose major and evolving risks to the building exterior, yet significant technical barriers prevent these risks from being adequately considered in building design and resilience analysis. This Faculty Early Career Development (CAREER) award will support research that focused on developing new methodologies to assess these evolving risks to improve the lifetime performance of a building exterior in hurricanes and enhance resilience of coastal urban communities. These methodologies will be encapsulated in a user-friendly, cloud-based online application, UrbanWinds, for engineers to quickly evaluate wind loads and building risk change in preliminary design or planning stages of new buildings, and to assess changing risk of an inventory of buildings at urban scales. Through the integration of research and education, unique hands-on and collaborative learning experiences for diverse groups of middle and high school, undergraduate, and graduate students will be designed through a portable STEM kit. This activity is expected to produce next-generation engineering and education professionals who are trained in principles of wind engineering, state-of-the-art experimental and computational modeling techniques, and STEM teaching skills. This award will contribute to the U.S. National Science Foundation (NSF) role in the National Windstorm Impact Reduction Program (NWIRP). Data generated from this project will be archived and made publicly available in the NSF-supported Natural Hazards Engineering Research Infrastructure (NHERI) Data Depot (https:/www.DesignSafe-CI.org).The goal of this project is to assess the nonstationary (“evolving”) hurricane risks to urban building envelopes (“exterior”) during urban development in a changing climate. A deep learning-based data-driven model of wind pressures on urban buildings as a function of changes in surrounding building clusters under urban development will be investigated. Wind tunnel tests will be conducted to provide wind pressure data for developing the data-driven model. Reynolds number effects on complex aerodynamic loading on clustered buildings, which have not been studied in the literature, will be investigated using the large-scale NSF-supported NHERI Wall of Wind Facility at Florida International University. Traditional fully coupled probabilistic methods may be impractical to assess uncertainties of wind direction for building clusters due to significant computational costs. Adding nonstationary risks due to climate change presents an enormous technical challenge. A new reliability- and scenario-based methodology will be developed to capture the nonstationary characteristics of hurricanes and site-specific wind direction effects. Combined, the above efforts will advance the field of building design and urban resilience planning by capturing essential nonstationary characteristics of risks to building envelopes due to urban development and climate change.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.

飓风期间的风损伤可能会对建筑物的外部灾难性（例如玻璃外墙和窗户）。建筑物外部的故障会导致级联的水入侵，广泛的内部损害以及对企业的干扰。由于这种损害而导致的维修成本可能很大。高层和中层建筑的设计可持续数十年。在建筑物的寿命中，城市化和气候变化在建筑物的外观上构成了主要的风险，但很大的技术障碍阻止了这些风险在建筑设计和弹性分析中得到充分考虑。这项教师早期职业发展（职业）奖将支持研究的研究，以开发新方法来评估这些不断发展的风险，以改善飓风中建筑物外部的终生绩效并增强沿海城市社区的韧性。这些方法将封装在用户友好的，基于云的在线应用程序UrbanWinds中，以供工程师快速评估风载和建筑物的初步设计或计划阶段的风险变化，并评估城市规模上建筑物库存的变化风险。通过整合研究和教育，将通过便携式STEM套件设计为中学和高中，本科和研究生的潜水小组，本科和研究生的独特动手和协作学习经验。预计这项活动将产生下一代工程和教育专业人员，这些专业人员接受了风风工程，最先进的实验和计算建模技术以及STEM教学技能的培训。该奖项将在美国国家科学基金会（NSF）中为国家风暴影响减少计划（NWIRP）做出贡献。 Data generated from this project will be archived and made publicly available in the NSF-supported Natural Hazards Engineering Research Infrastructure (NHERI) Data Depot (https:/www.DesignSafe-CI.org).The goal of this project is to assess the nonstationary (“evolving”) hurricane risks to urban building envelopes (“exterior”) during urban development in a changing climate.将研究一个基于学习的数据驱动的城市建筑的风压力模型，这是城市发展下建筑集群周围建筑物群体变化的函数。将进行风洞测试，以提供风力数据，以开发数据驱动的模型。雷诺的数量对尚未在文献中尚未研究的集群建筑物的复杂空气动力载荷的影响将使用佛罗里达国际大学风能设施的大型NSF支持的NHERI墙进行研究。由于巨大的计算成本，传统的完全耦合概率方法可能不切实际地评估建筑物集群的不确定性。由于气候变化而增加的非组织风险提出了巨大的技术挑战。将开发一种新的基于可靠性和方案的方法，以捕获飓风的非组织特征和特定地点风向效应。结合上述努力将通过捕获由于城市发展和气候变化而捕获建筑信封的基本非机构特征来推动建筑设计和城市弹性计划的领域。该奖项反映了NSF的法定任务，并被认为是通过基金会的知识分子和更广泛影响的审查标准来通过评估来通过评估来获得的支持。