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Collaborative Research: Rethinking the Role of Building Envelopes with Smart Morphing Facades

协作研究：重新思考具有智能变形立面的建筑围护结构的作用

基本信息

批准号：
1826356
负责人：
Alice Alipour
金额：
$ 40万
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：
2019
资助国家：
美国
起止时间：
2019-01-01 至 2023-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1826356&HistoricalAwards=false
关键词：
Collaborative Research Rethinking Role Building

项目摘要

The goal of this project is to transform building facades from passive structural elements serving their conventional architectural and functional roles to an adaptable engineered system that can (1) protect a building against extreme wind events, (2) reduce safety concerns and structural costs, and (3) eventually contribute to a sustainable solution for energy saving. Traditionally, fixed structures, such as tall buildings, have been designed with a specific shape based on estimates of average wind flow conditions. This appearance-based design can result in shapes that are not the most effective, especially where the wind becomes variable in intensity and direction. To address structural performance issues and achieve an improved safety and comfort for building occupants, this project will develop innovative smart, morphing facade modules that actively modify the building?s aerodynamic shape to alleviate flow-induced vibrations during moderate to high winds. This technology has the potential to be integrated with the growing industry of adaptive facades for energy generation in buildings, providing additional functionality and sustainability benefits. Both graduate and undergraduate students will become involved in this research project, with recruitment that will particularly target students who are underrepresented in engineering fields. The project will also result in new educational engineering activities presented through undergraduate coursework and in STEM outreach to underrepresented and underserved K-12 populations. The outcome of this research will result in a new generation of multifunctional morphing facade modules that are sustainable and resilient. Such modules, which have tangible safety and economic benefits, will transform the design of morphing control systems for hazard mitigation purposes. This project will create fundamental knowledge in (1) modeling of the dynamics of tall buildings, taking into consideration the feedback loops for control systems in structural analysis, as well as assessment of the dynamic behavior of the integrated building and active facade; (2) diagnostics of the system properties from observations through pressure, accelerometer, and velocity sensors, where a network of sensors will be used to characterize and reconstruct a near-real-time representation of flow-induced forces acting on the building; and (3) control of the aerodynamic shape of the system to obtain a desired dynamic behavior. This research is expected to advance aerodynamic optimization and active control systems for large-scale morphing surfaces through integrated computational and experimental analyses.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.

该项目的目标是将建筑立面从传统建筑和功能的被动结构元素转变为适应性工程系统，可以(1)保护建筑免受极端风事件的影响，(2)减少安全问题和结构成本，(3)最终为节能提供可持续的解决方案。传统上，固定结构，如高层建筑，都是根据对平均风流条件的估计来设计特定形状的。这种基于外观的设计可能会导致形状不是最有效的，特别是在风的强度和方向可变的情况下。为了解决结构性能问题，提高建筑居住者的安全性和舒适度，该项目将开发创新的智能变形立面模块，积极改变建筑。S气动形状，以减轻在中高风速下流动引起的振动。这项技术有潜力与不断发展的建筑能源生产适应性外墙行业相结合，提供额外的功能和可持续发展的好处。研究生和本科生都将参与到这个研究项目中来，招募的对象将特别针对那些在工程领域代表性不足的学生。该项目还将通过本科课程和STEM向代表性不足和服务不足的K-12人群提供新的教育工程活动。这项研究的结果将产生新一代多功能变形立面模块，这些模块具有可持续性和弹性。这些模块具有切实的安全性和经济效益，将改变变形控制系统的设计，以减轻危害。该项目将在以下方面创造基础知识：(1)高层建筑动力学建模，考虑到结构分析中控制系统的反馈回路，以及综合建筑和活动立面的动态行为评估；(2)通过压力、加速度计和速度传感器对系统特性进行诊断，其中传感器网络将用于表征和重建作用在建筑物上的流诱导力的近实时表示；(3)控制系统的气动外形以获得理想的动力性能。本研究旨在通过综合计算和实验分析，推进大型变形曲面的气动优化和主动控制系统。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。