Collaborative Research: Real-Time Hybrid Simulation Enabled Damping System Assessment using Scaled Aeroelastic Models of Tall Buildings

该奖项将开发一种基于实时混合仿真(RTHS)方法的新的减震系统评估框架，该框架将提供准确捕获配备复杂阻尼器的高层建筑的风致响应的能力。抑制高层建筑不良风致振动的最具成本效益的方法之一是加入辅助减振系统。此类减振系统的最新评估和设计依赖于在风洞试验中使用简化的小型阻尼器模型。这种方法在真实风环境中再现全尺寸减振系统的复杂行为方面存在局限性，因为它会在高层建筑响应评估中引入误差和显著的不确定性。该研究项目将开发实验、建模和计算能力，以设计和分析此类减震系统，并了解高层建筑在真实风激励下的表现。佛罗里达国际大学由NSF支持的自然灾害工程研究基础设施(NHERI)风墙设施将用于实验验证和示范研究。该研究计划将通过课程开发、高中生实践经验以及高层建筑动态测试和风致响应减少的培训演示来补充教育和推广计划。作为该项目的一个组成部分，将通过关于高中外展和本科生培训活动的既定机构方案，促进来自代表性不足群体的学生的参与。项目数据将在NHERI数据仓库(https://www.DesignSafe-ci.org).)中存档这一奖项是为了表彰NSF在国家减少风灾影响计划中的作用。为了加深对安装了复杂阻尼器的高层建筑在真实风激励下响应的基础知识，本项目将：(1)通过建立用于真实风致减振评估的新型RTHS平台，获取集成了全尺寸减振系统的高层建筑模型的气动弹性行为；(2)开发阻尼器分析框架，以确定用于最佳减振响应的阻尼器参数，并定量评估阻尼器在不确定条件下的性能；(3)通过针对真实风情景的实验程序，验证和演示RTHS平台和阻尼器分析框架；(4)通过出版物、共享代码和基准数据集向研究人员和从业者传播研究成果；以及(5)在NHERI风墙设施中建设RTHS能力。研究成果将有助于实现高层建筑在不同风力情况下的辅助减振系统的高置信度评估和设计。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

This award will develop a new damping system assessment framework based on the real-time hybrid simulation (RTHS) methodology that will provide the capability to accurately capture wind-induced response of tall buildings equipped with complex dampers. One of the most cost-effective means of suppressing undesirable wind-induced vibrations of tall buildings is to incorporate auxiliary damping systems. State-of-the-art assessment and design of such damping systems rely on the use of simplified small-scale damper models in wind tunnel tests. This approach presents limitations in reproducing the complex behaviors of full-scale damping systems in a realistic wind environment, as it can introduce errors and significant uncertainty in tall building response evaluation. This research project will develop experimentation, modeling, and computational capabilities for the design and analysis of such damping systems and to understand how tall buildings perform when integrated with them under realistic wind excitations. The NSF-supported Natural Hazards Engineering Research Infrastructure (NHERI) Wall of Wind facility at Florida International University will be used for the experimental validation and demonstration studies. The research program will be complemented with an education and outreach program through curriculum development, hands-on experiences for high school students, and training demonstrations on dynamic testing and wind-induced response reduction for tall buildings. As an integrated part of this project, the participation of students from underrepresented groups will be promoted through established institutional programs on high school outreach and undergraduate training activities. Project data will be archived in the NHERI Data Depot (https://www.DesignSafe-ci.org). This award contributes to NSF's role in the National Windstorm Impact Reduction Program. To advance fundamental knowledge on the response of tall buildings equipped with complex dampers under realistic wind excitations, this project will: (1) capture the aeroelastic behavior of tall building models integrated with full-scale damping systems by establishing a novel RTHS platform for the realistic evaluation of wind-induced response reduction; (2) develop a damper analysis framework to identify damper parameters for optimal response reduction and quantitatively assess the damper’s performance under uncertainty; (3) validate and demonstrate the RTHS platform and damper analysis framework via an experimental program focused on realistic wind scenarios; (4) disseminate the research outcomes to researchers and practitioners through publications, shared codes, and benchmark data sets; and (5) build RTHS capacity in the NHERI Wall of Wind facility. The research outcomes will help realize high-confidence evaluation and design for auxiliary damping systems in tall buildings subjected to various wind scenarios.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.