Workshop: Mid-scale RI-EW Concepts for a Tornado-Downburst-Gust Testing Facility to Study Wind/Debris Impact on Civil Infrastructure; Chicago, Illinois; 20-21 October 2022

研讨会：用于研究风/碎片对民用基础设施影响的龙卷风-下击暴流-阵风测试设施的中型 RI-EW 概念；

• 批准号: 2233640
• 负责人: Partha Sarkar
• 金额: $ 5万
• 依托单位: Iowa State University
• 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: 2022-08-15 至 2023-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2233640&HistoricalAwards=false
• 关键词: Workshop; Mid; scale; RI; EW

Non-synoptic windstorms, tornadoes, downbursts, and gust fronts annually cause billions of dollars of property damage and inflict numerous fatalities and injuries in the United States. Major tornadoes, with an intensity of Enhanced Fujita (EF) 3 or greater (136 mph or greater, three-second gust), have struck large population centers in the past causing multiple fatalities and significant damage to structures. Property damage from downbursts and gust fronts are equally devastating. Damage to civil infrastructure will only increase in the future with growing urbanization and increased intensification/frequency of such windstorms because of climate change. To improve the resilience of civil infrastructure in these extreme wind events and reduce their economic and social impacts on society, an advanced research and testing facility is needed in the United States that can simulate realistic wind fields and a weather-like environment with wind speeds up to 250 mph. This award will conduct an engineering workshop that will identify the concepts for a university-based national testing facility that will be capable of generating wind fields associated with EF1 to EF5 tornadoes (86-250 mph), intense downbursts (150-175 mph), and gust fronts with wind speeds up to 100 mph. Such a facility, with capabilities that exceed those of existing facilities, would enable investigation of the impacts of non-synoptic windstorms on civil infrastructure at mid-to-large length scales (1/10-1/2) for studying the near-ground wind field, and wind loading, debris impact, and damage mechanisms for a range of structures with small to large footprints and heights. The two-day workshop, organized by Iowa State University, will be held in Chicago, Illinois, on October 20-21, 2022. It will bring together 25-30 participants from universities, government agencies, and industry to discuss the scientific needs and requirements and conceptual design of the mid-scale research infrastructure facility. The workshop will facilitate (a) advancement of knowledge of the transient characteristics of the non-synoptic winds and the hazards they pose that cause structural damage, (b) understanding of the mechanics of the wind-structure and debris-structure interactions in non-synoptic winds, (c) need for new experimental data and its integration with computational mechanics to improve structural modeling and damage prediction, (d) discussion of facility components and instrumentation, and (e) development of a Project Execution Plan (PEP) for the design of a new facility. The workshop outcomes will be synthesized in a report that will be disseminated to the engineering research community via the Natural Hazards Engineering Research Infrastructure (NHERI) 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.

非合成风暴，龙卷风，爆炸和阵风阵线每年造成数十亿美元的财产损失，并在美国造成了许多死亡和伤害。大型龙卷风的强度增强了富士（EF）3或更高（136 mph或更高，三秒钟的阵风），过去曾遭受大量人口中心，造成多重死亡和对结构的重大破坏。爆发和阵风的财产损失同样具有毁灭性。由于气候变化，对民用基础设施的损害只会随着城市化的日益增加和这种暴风雨的强化/频率而增加。为了提高这些极端风事件中民用基础设施的韧性，并减少了他们对社会的经济和社会影响，在美国需要进行先进的研究和测试设施，该设施可以模拟现实的风场和风向速度高达250英里 /小时的天气样环境。该奖项将举办一个工程研讨会，该研讨会将确定一个基于大学的国家测试设施的概念，该设施将能够产生与EF1到EF5龙卷风相关的风场（86-250 mph）（86-250 mph），强烈的下降爆发（150-175 mph），以及以最高时速为100 mph的阵风。这种设施具有超过现有设施的功能，可以调查非同步风暴对大型长度尺度（1/10-1/2）的民用基础设施的影响（1/10-1/2），以研究近场风场，风力负载，碎屑，碎屑，碎屑的影响，以及与小脚本的结构范围和损坏机制。由爱荷华州立大学组织的为期两天的研讨会将于2022年10月20日至21日在伊利诺伊州的芝加哥举行。它将汇集来自大学，政府机构和行业的25-30名参与者，讨论中尺度研究基础设施的科学需求和需求以及概念设计。 The workshop will facilitate (a) advancement of knowledge of the transient characteristics of the non-synoptic winds and the hazards they pose that cause structural damage, (b) understanding of the mechanics of the wind-structure and debris-structure interactions in non-synoptic winds, (c) need for new experimental data and its integration with computational mechanics to improve structural modeling and damage prediction, (d) discussion of facility components and仪器，以及（e）为新设施设计的项目执行计划（PEP）的制定。研讨会的结果将在一份报告中合成，该报告将通过自然危害工程研究基础设施（NHERI）数据仓库（https://www.designsignsafe-ci.org.org）分解给工程研究社区。这种奖项反映了NSF的法定任务和经过评估，这表明了这一奖项通过评估委员会的范围。