Measurement & Characterization of Hurricane Wind Loads on Structures Using a Wireless Sensing Networking System

测量

• 批准号: 0625124
• 负责人: Jean-Paul Pinelli
• 金额: $ 30万
• 依托单位: Florida Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-09-01 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0625124&HistoricalAwards=false
• 关键词: Measurement; & Characterization; Hurricane; Wind

Abstract: CMS-0625124The 2004 hurricane season resulted in insured losses in excess of $20 billion. The 2005 hurricane season was even more catastrophic with Katrina identified as one of the costliest and most fatal natural disasters ever suffered by the U.S. Surveys of the structural damages caused by these hurricanes exposed the inadequacies in the existing building codes and practices. The existing codes (e.g. ASCE 7-05) are developed based on wind tunnel testing of model scale structures in open exposure, including some correction factors for full-scale effects. However, more accurate statistical models that would include the effects of varying exposure require extensive and reliable measurement of wind fields and pressures on different full-scale buildings. The current field measurement technologies for hurricane environments are subject to data loss and reliability issues, rapid deployment problems, and lack the means for "real-time" rectification of any system breakdowns during data collection. This proposal is to design and build a network of wireless sensor systems to reliably measure the hurricane wind loads on residential structures. An extensive test bed (structures ready to receive the instrumentation) already exists, providing the PIs access to over 30 structures along the Florida coast on which to employ the sensor network. The resulting full-scale datasets will be used to establish relationships between actual full-scale loads and the wind tunnel datasets used to create load provisions. One of the innovative parts of the proposal is to create an integrated reliable system for multi-point sensing in harsh environment by combining cutting edge local and global wireless networking and modern low power electromechanical sensors technologies. The system will comprise a cluster of mobile nodes (sensors) distributed over the roof top and walls of a residential or commercial building, or essential infrastructure, and a centrally located, environmentally protected master node (base unit) to monitor the operation of the mobile nodes and act as a data repository. The master node will communicate in real time with a central command located away from the landfall area, for remote management, monitoring, and data transmission. The second innovative part of the proposal is to create an object oriented and adaptive data acquisition algorithm. Finally, availability of the high quality measurements from the wireless sensor networks will provide the PIs with means of evaluating existing wind structure interaction models and wind tunnel studies and to create models that are more sophisticated and more accurate than the ones that exist today in the building code.

摘要：CMS-0625124 2004年飓风季节导致保险损失超过200亿美元。 2005年的飓风季节更加灾难性，卡特里娜飓风被确定为美国对这些飓风造成的结构性损害所遭受的最昂贵，最致命的自然灾害之一，这些飓风暴露了现有建筑法规和实践中不足的问题。现有的代码（例如ASCE 7-05）是基于开放式暴露中模型量表结构的风洞测试而开发的，其中包括一些全尺度效果的校正因子。但是，更准确的统计模型将包括各种暴露的影响，需要对不同全尺寸建筑物的风场和压力进行广泛而可靠的测量。当前针对飓风环境的现场测量技术会遇到数据丢失和可靠性问题，快速部署问题以及缺乏对数据收集过程中任何系统崩溃的“实时”纠正的手段。该建议是设计和建立一个无线传感器系统网络，以可靠地测量住宅结构上的飓风载荷。已经存在了广泛的测试床（准备接收仪器的结构）已经存在，可提供PIS沿佛罗里达海岸沿线使用传感器网络的30多个结构。最终的全尺度数据集将用于建立实际的全尺度负载与用于创建负载配件的风洞数据集之间的关系。该提案的创新部分之一是通过结合前沿本地和全球无线网络以及现代的低功率机电传感器技术来创建一个在恶劣环境中进行多点传感的集成可靠系统。该系统将包括分布在住宅或商业建筑或必需基础设施的屋顶顶部和墙壁上的一组移动节点（传感器），以及一个位于中央的，环境保护的主节点（基本单元），以监视移动节点的操作并充当数据存储库。主节点将与远离登陆区域的中央命令实时通信，以进行远程管理，监视和数据传输。该提案的第二个创新部分是创建一种面向对象的和自适应数据采集算法。最后，无线传感器网络的高质量测量值的可用性将为PI提供评估现有风结构相互作用模型和风洞研究的方法，并创建比当今建筑代码中存在的模型更复杂，更准确。