Full-Scale and Modeled Hurricane Wind Loads on Residential Structures

边界层风洞的比例模型试验已成为规范规定的设计风荷载开发的主要工具。然而，关于风洞方法复制飓风风环境和确定飓风中低层结构的峰值荷载的能力的问题已经提出。本研究将解决飓风易发沿海地区风险一致施工实践发展中的两个突出问题。首先，它将量化低层结构极端风荷载风洞建模的精度和准确性；其次，它将开发接近的湍流飓风风场的适当表示。这两项工作都将利用在11个飓风季节收集的现有飓风风速和压力负荷数据库。四个风洞设施将独立产生按比例模型房屋的负荷估计。结果将与在模型上测量的真实飓风风荷载数据进行比较。全尺寸对应。风洞设施采用的上游湍流将与陆地登陆飓风期间直接测量到的湍流数据进行比较。因此，尺度效应、接近湍流和设施之间的可变性对极端风荷载估计的精度和准确性的相对影响将被量化。该研究将提供证据，以促进专业共识，以验证或建议改变当前的实验风荷载评估方法和规范风荷载实践。研究成果将改进用于减轻生命财产损失和促进沿海发展的科学方法，并与准确的风灾风险观点保持一致。通过风险一致的建设减少损失和风暴后的恢复时间，可以缩短沿海企业的停工时间，提高飓风易发沿海地区的经济可持续性。工程专业的学生将参与研究，研究结果将被纳入风工程课程。

Scale model tests in boundary layer wind tunnels have been the primary tool for the development of the design wind loads prescribed in codes. However, questions have been raised concerning the ability of wind tunnel methods to replicate the hurricane wind environment and to determine peak loads on low rise structures in hurricanes. This research will address two outstanding issues in the development of risk consistent construction practice in hurricane prone coastal regions. First it will quantify the precision and accuracy of wind tunnel modeling of extreme wind loads on low rise structures, and second it will develop the proper representation of the approaching turbulent hurricane wind field. Both efforts will utilize an existing hurricane wind velocity and pressure load database collected in-field during eleven hurricane seasons. Four wind tunnel facilities will independently produce estimates of loads on scale model houses. Results will be compared with real hurricane wind load data measured on the models? full scale counterpart. The upstream turbulence employed by the wind tunnel facilities will be compared with turbulence data directly measured during land falling hurricanes. Thus the relative influence of scaling effects, approach turbulence, and variability between facilities on the precision and accuracy of extreme wind load estimates will be quantified. The research will produce evidence to foster the professional consensus required to validate or suggest changes to current experimental wind load evaluation methods and prescriptive wind load practice. Research outcomes will improve the scientific methods used to mitigate loss of life and property and promote coastal development consistent with an accurate view of the wind damage risk. Reducing damage and post-storm recovery time via risk consistent construction results in shorter down time for coastal businesses, improving the economic sustainability of hurricane prone coastal regions. Engineering students will participate in the research, and findings will be incorporated into the wind engineering curriculum.