Mid-scale RI-1 (M1:DP): National Testing Facility for Enhancing Wind Resiliency of Infrastructure in Tornado-Downburst-Gust Front Events (NEWRITE)

中型 RI-1 (M1:DP)：增强龙卷风-下暴流-阵风锋锋事件中基础设施抗风能力的国家测试设施 (NEWRITE)

• 批准号: 2330150
• 负责人: Partha Sarkar
• 金额: $ 1402.55万
• 依托单位: Iowa State University
• 依托单位国家: 美国
• 项目类别: Cooperative Agreement
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-10-01 至 2027-09-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2330150&HistoricalAwards=false
• 关键词: Mid; scale; RI; M1; DP

This Mid-scale Research Infrastructure-1 award will support the design phase for a university-based National Testing Facility for Enhancing Wind Resiliency of Infrastructure in Tornado-Downburst-Gust Front Events (NEWRITE). The design of NEWRITE will consider realistic wind fields (speeds up to 225 miles per hour (mph)) in non-synoptic windstorm (NSW) events (tornado/downburst/gust-front) to enable physical testing of their loading and damaging effects on civil infrastructure at mid-to-full model scales (1:10 to 1:1). These weather events cause considerable property damage and numerous fatalities annually in the United States. Damage to infrastructure will only increase with growing urbanization and increased intensification and frequency of such windstorms due to the changing climate. As evidenced in the past, major tornadoes with an intensity of Enhanced Fujita 3 (EF3) or greater (136 mph or greater, 3-second gust) have struck large population centers, causing multiple fatalities and significant damage to residential and engineered structures. Property damage from downbursts and gust fronts are equally significant. NEWRITE will be designed to be a state-of-the-art research and testing platform to mitigate the impacts of NSW hazards on the built environment and significantly reduce fatalities and economic losses. Iowa State University will lead this design project with participation from Clemson University, Missouri University of Science and Technology, Northeastern University, Texas Tech University, University of Arkansas at Fayetteville, University of Florida, University of Washington, and University of Wisconsin at Madison. This design project will be a component of the National Science Foundation (NSF)-supported Natural Hazards Engineering Research Infrastructure (NHERI) and will contribute to the NSF role in the National Windstorm Impact Reduction Program (NWIRP). Data produced during this design project will be archived and made publicly available in the NHERI Data Depot (https://www.DesignSafe-ci.org). The design of NEWRITE will consider desired capabilities to generate wind fields associated with EF1 to EF5 tornadoes (86-225 mph), moderately intense downbursts (100-125 mph), and gust fronts (80-100 mph). NEWRITE will be designed to investigate NSW hazards on civil infrastructure at scales large enough to study near ground wind fields, wind loading, wind-borne debris impact, and structural damage mechanisms in NSW events. These design parameters would allow the wind engineering community to conduct research to understand the impact of wind and debris in NSW events on the built environment from individual structures to groups of structures at the community scale. The design of NEWRITE will consider capabilities to (a) advance the current knowledge of the transient characteristics of non-synoptic winds and the hazards they pose from the extreme wind and wind-borne debris, (b) advance the understanding of the mechanics of the wind structure and debris-structure interactions in NSW events, such as load distribution, load paths, and component stresses in structures, (c) enable better detection of NSW events on the ground through the integration of wind speed and ground pressure-sensors and radar data for improved warning, and (d) integrate experimental data with computational mechanics to improve structural modeling and damage prediction, enabling the development of resilient structures. The facility will be designed to physically simulate NSW hazards at mid-to-full model-length scale and velocity scale required to faithfully reproduce the damaging effects of these hazards on civil infrastructure and assess potential solutions to enhance their wind resiliency through robust design. During this design project, a smaller scale (1:20) physical prototype of NEWRITE will be designed and constructed at Iowa State University and a digital twin of NEWRITE will be developed to assist with the full-scale NEWRITE design. While the outcome of this project will be final design documents for construction of the full-scale NEWRITE, this award is not a commitment to support the construction phase of the full-scale NEWRITE. This project is jointly funded by the Mid-scale Research Infrastructure-1 Program and the Established Program to Stimulate Competitive Research (EPSCoR).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.

该中型研究基础设施-1奖将支持基于大学的国家测试设施的设计阶段，用于增强龙卷风下击暴流阵风锋事件（NEWRITE）中基础设施的风弹性。NEWRITE的设计将考虑非天气风暴（NSW）事件（龙卷风/下击暴流/阵风锋）中的真实风场（速度高达225英里/小时（mph）），以便能够在中到全模型比例（1：10至1：1）下对其荷载和对民用基础设施的破坏影响进行物理测试。这些天气事件每年在美国造成相当大的财产损失和许多死亡。随着城市化的不断发展以及气候变化导致的此类风暴的加剧和频繁，对基础设施的破坏只会增加。如过去所证明的，强度为增强型藤田3（EF 3）或更高（136英里/小时或更高，3秒阵风）的大型龙卷风袭击了大型人口中心，造成多人死亡，并对住宅和工程结构造成重大破坏。下击暴流和阵风锋造成的财产损失同样严重。 NEWRITE将被设计成一个最先进的研究和测试平台，以减轻新南威尔士州灾害对建筑环境的影响，并显着减少死亡和经济损失。爱荷华州州立大学将领导这一设计项目，参与者包括克莱姆森大学、密苏里州科技大学、东北大学、得克萨斯理工大学、费耶特维尔的阿肯色州大学、佛罗里达大学、华盛顿大学和威斯康星州麦迪逊大学。 该设计项目将成为美国国家科学基金会（NSF）支持的自然灾害工程研究基础设施（NHERI）的一个组成部分，并将有助于NSF在国家风暴影响减少计划（NWIRP）中的作用。本设计项目期间产生的数据将在NHERI数据库（https：//www.example.com）中存档并公开提供。www.DesignSafe-ci.org NEWRITE的设计将考虑产生与EF 1至EF 5龙卷风（86-225 mph）、中等强度下击暴流（100-125 mph）和阵风锋（80-100 mph）相关的风场的所需能力。NEWRITE的设计目的是调查新南威尔士州对民用基础设施的危害，其规模足以研究近地面风场、风荷载、风载碎片影响和新南威尔士州事件中的结构破坏机制。 这些设计参数将允许风工程界进行研究，以了解风和碎片在新南威尔士州事件对建筑环境的影响，从单个结构到社区规模的结构组。 NEWRITE的设计将考虑以下能力：（a）提高当前对非天气风的瞬态特性及其由极端风和风载碎片造成的危害的认识，（B）提高对新南威尔士州事件中风结构和碎片-结构相互作用的力学的理解，如荷载分布、荷载路径和结构中的构件应力，（d）把实验数据与计算力学结合，以改善结构模拟和损害预测，使能发展具弹性的结构。该设施将被设计为在中到全模型长度尺度和速度尺度下物理模拟新南威尔士州的灾害，以忠实地再现这些灾害对民用基础设施的破坏性影响，并评估通过稳健设计增强其风力弹性的潜在解决方案。在这个设计项目中，将在爱荷华州州立大学设计和建造一个较小比例（1：20）的NEWRITE物理原型，并将开发一个NEWRITE的数字孪生模型，以协助全尺寸的NEWRITE设计。虽然该项目的成果将是全尺寸NEWRITE建设的最终设计文件，但该奖项并不承诺支持全尺寸NEWRITE的建设阶段。该项目由中型研究基础设施-1计划和刺激竞争研究的既定计划（EPSCoR）共同资助。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。