CSU/TTU Cooperative Wind Engineering Program

[409869 9411147] Mehta Meroney合作风力工程项目（CWEP）进入了第二个五年周期的研究活动，由科罗拉多州立大学和德克萨斯理工大学的跨学科研究小组共同开展。合作研究计划将继续关注三个主要领域：风荷载、风工程气象学和建筑物周围的风流。在三个主要领域进行的研究中，将合并全尺寸现场和风洞物理建模的组合，并且每一个都将集成到其他两个领域中。在风荷载方面，将继续研究诸如数据采集和分析、透水表面的压力、建筑和机械特征的影响、风荷载的时空结构以及低层建筑的风荷载可靠性分析等主题。在风工程气象领域，对风流记录特别是NEXRAD数据的仪器改进和改进分析，以及边界层风洞中风暴的模拟是有待研究的课题。在建筑物周围的风流区域，识别靠近建筑物表面的分离区域、雷诺数的影响、使用激光片可视化来检查风流的时变性质、建筑物形状、屋顶线和其他特征的影响、遮蔽和地形效应以及数值模拟是一些需要研究的主题。在这三个主要领域所做的工作的结果将在整个项目期间得到整合。根据该计划的成果，处于危险中的人群的安全将得到改善，私营部门，如建筑业和保险业，将受益，因为新建和改造的建筑物和结构的脆弱性将减少；联邦、州和地方行政人员将继续受益于制定新的和改进的缓解措施；研究界也将从项目期间开发的数据、仪器和方法中获得知识。＊＊＊

9409869 9411147 Mehta Meroney The Cooperative Wind Engineering Program (CWEP) enters the second five-year cycle of research activities undertaken by an interdisciplinary team of researchers from Colorado State and Texas Tech Universities working jointly. The cooperative research program will continue focusing on three main areas: wind load, wind engineering meteorology and wind flow around buildings. The combination of full scale field and wind-tunnel physical modeling will be merged in studies conducted in the three main areas and each will be integrated into the other two. On Wind loads, studies will continue in topics such as data acquisition and analysis, pressures on permeable surfaces, the influence of architectural and mechanical features, the spatial and temporal structural of wind loads, and on wind loading reliability analysis of low-raise buildings. In the area of wind engineering meteorology, instrumentation refinements and improved analysis of wind flow records especially of NEXRAD data, and the simulation of wind storms in the boundary layer wind tunnel are some of the topics to be studied. In the area of wind flow around buildings, the identification of the separation region near the surface of structures, the effect of the Reynolds number, the use of laser-sheet visualization to examine the time-dependent nature of the wind flow, the effect of building shape, roof line and other features, shelter and topographic effects, and numerical modeling are some of the topics to be studied. The results from the work done in these three main areas will be integrated throughout the duration of the program. Based on the results from this program the safety of populations at risk will improve and the private sector, such as the construction and insurance industries, will benefit because the vulnerability of new and retrofitted buildings and structures will decrease; the Federal, State and local administrators will continue to benefit because o f the development of new and improved mitigation measures; and the research community also will gain knowledge from the data, instrumentation and methods developed during the program. ***