PFI-TT: Performance-Based Risk Assessment and Mitigation Tool for Buildings under Extreme Wind Events

PFI-TT：极端风力事件下建筑物的基于性能的风险评估和缓解工具

• 批准号: 1827774
• 负责人: Alice Alipour
• 金额: $ 20万
• 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: 2018
• 资助国家: 美国
• 起止时间: 2018-08-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1827774&HistoricalAwards=false
• 关键词: PFI; TT; Performance; Based; Risk

The broader impact/commercial potential of this PFI project is to minimize human and monetary losses incurred every year due to wind-related damage to buildings and other similar structures. In the recent years, wind hazards have caused significant building repair costs, placing tremendous burden on their owners and insurance companies. To reduce the vulnerability of buildings to extreme wind events, such as hurricanes and tornadoes, a holistic platform is required to (1) estimate the risk of failure of a building under the expected intensity and frequency of occurrence of windstorms in a given region; and (2) inform the involved entities, including design consultants, contractors, stakeholders, and insurance companies, on how to avoid the risk of failure through innovative design and mitigation strategies. While the former aspect has been studied to some extent by the involved agencies and companies, the latter aspect has remained largely unexplored, due to technical complexities, budget constraints, and the absence of supporting guides and tools. This has motivated the development of the very first wind performance-based risk assessment and mitigation tool.The proposed project will result in a multi-purpose tool to transform the analysis and design of buildings subjected to wind hazards. This is a unique innovation, as it employs, for the first time, the concepts of risk assessment and mitigation together to maximize the safety and performance of buildings in high-wind areas. For assessment purposes, this tool relies on a performance-based philosophy, which offers versatile capabilities to optimize the design in such a way that the cost is minimized, while the target performance objectives are achieved. On the other hand, for mitigation purposes, a decision-making algorithm is implemented to consider multiple strategies and identify the best solution based on a range of performance, cost, and risk metrics. This will be an important step forward to address the challenges that have prevented the building sector from ensuring the safety and comfort of buildings against wind loads. The innovation of the proposed tool, however, will not be limited to its simulation capabilities, data-driven algorithms, and predictive models, as it will deliver a platform that greatly facilitates the communication and collaboration among various entities involved in the finance, design, maintenance, and insurance of buildings.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.

这个PFI项目的更广泛的影响/商业潜力是最大限度地减少每年因建筑物和其他类似结构的风力损坏而造成的人员和金钱损失。近年来，风力灾害造成了巨大的建筑维修费用，给业主和保险公司带来了巨大的负担。为了降低建筑物对极端风事件（如飓风和龙卷风）的脆弱性，需要一个整体平台来(1)在给定区域的预期风暴强度和发生频率下估计建筑物的倒塌风险；(2)告知相关实体，包括设计顾问、承包商、利益相关者和保险公司，如何通过创新设计和缓解策略来避免失败风险。虽然有关机构和公司对前一个方面进行了一定程度的研究，但由于技术复杂性、预算限制和缺乏支持指南和工具，后一个方面在很大程度上仍未进行探索。这促使开发了首个基于风力性能的风险评估和缓解工具。拟议的项目将产生一个多用途的工具，以改变受风危害的建筑物的分析和设计。这是一项独特的创新，因为它首次采用了风险评估和缓解的概念，以最大限度地提高强风地区建筑物的安全性和性能。出于评估目的，该工具依赖于基于性能的理念，它提供了多种功能来优化设计，从而在实现目标性能目标的同时将成本降至最低。另一方面，为了缓解风险，实现了一种决策算法，以考虑多种策略，并根据一系列性能、成本和风险指标确定最佳解决方案。这将是向前迈出的重要一步，以解决阻碍建筑部门确保建筑物在风荷载下的安全性和舒适性的挑战。然而，所提议的工具的创新并不局限于其模拟能力、数据驱动算法和预测模型，因为它将提供一个平台，极大地促进涉及建筑物财务、设计、维护和保险的各种实体之间的沟通和协作。该奖项反映了美国国家科学基金会的法定使命，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。

项目成果

Design optimization of double-layered structural insulated panels for windborne debris hazard

• DOI: 10.1016/j.compositesb.2021.108806
• 发表时间: 2021-03
• 期刊: Composites Part B: Engineering
• 作者: D. Saini;B. Shafei

Review of approaches, opportunities, and future directions for improving aerodynamics of tall buildings with smart facades

• DOI: 10.1016/j.scs.2021.102979
• 发表时间: 2021-05
• 期刊: Sustainable Cities and Society
• 影响因子: 11.7
• 作者: M. Jafari;A. Alipour

Damage assessment of wood frame shear walls subjected to lateral wind load and windborne debris impact

横向风荷载和风载碎片冲击下木框架剪力墙的损伤评估

• DOI: 10.1016/j.jweia.2020.104091
• 发表时间: 2020
• 期刊: Journal of wind engineering and industrial aerodynamics
• 影响因子: 4.8
• 作者: Saini, D.;Shafei, B.
• 通讯作者: Shafei, B.