RAPID: Roof Failures in the Northeast-Implications for Building Codes

RAPID：东北部屋顶失效对建筑规范的影响

• 批准号: 1134714
• 负责人: Michael O'Rourke
• 金额: $ 2.5万
• 依托单位: Rensselaer Polytechnic Institute
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-08-15 至 2013-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1134714&HistoricalAwards=false
• 关键词: RAPID; Roof; Failures; Northeast; Implications

The goal of the research is to determine the causes for more than 400 snow related roof failures officially reported in 2010-2011 winter in the Northeast United States such as in Massachusetts, Connecticut and New York. The failure data collected by building officials will be analyzed to determine if the failures are either due to excessive snow loads or due to structural capacity being less than that envisioned by building code provisions. These key questions will be answered by analysis of the roof load case histories provided by the structural engineering officials and community in combination with detailed weather information on snowfall and wind for selected sites from the Northeast Regional Climate Center. The research results will provide the basic design information to engineers and code officials to improve snow load demand provisions and material resistance standards prescribed in the current structural design provisions. The project outcomes will lead to determination of appropriate response needed to ensure better building performance in the future. The data and analysis results will be made available to the Structural Engineering Institute of the American Society of Civil Engineers (SEI/ASCE) for its publication and wider dissemination to the structural engineering community for follow-up studies. A session on Roof Failures in the Northeast will be organized for the April 2012 ASCE/SEI Structures Congress. The report and session will result in practicing structural engineers and building officials gaining a fundamental understanding of how real buildings respond to real snow loads to design safer and more economical buildings in the future. The undergraduate students will be involved in the project to provide unique experience and insight into the behavior of various roofing systems.

该研究的目标是确定2010-2011年冬季美国东北部正式报告的400多起与雪有关的屋顶故障的原因，如马萨诸塞州、康涅狄格州和纽约。将分析建筑官员收集的故障数据，以确定故障是由于过度的雪荷载还是由于结构能力低于建筑规范规定的设想。这些关键问题将通过分析结构工程官员和社区提供的屋顶荷载案例历史，结合东北区域气候中心选定地点的降雪和风的详细天气信息来回答。研究结果将为工程师和规范官员提供基本的设计信息，以改进现行结构设计规定中规定的雪荷载需求规定和材料抗力标准。项目结果将导致确定所需的适当应对措施，以确保未来更好的建筑性能。 数据和分析结果将提供给美国土木工程师协会结构工程研究所（SEI/ASCE），供其出版和更广泛地传播给结构工程界进行后续研究。将为2012年4月ASCE/SEI结构大会组织一次关于东北部屋顶破坏的会议。报告和会议将导致实践结构工程师和建筑官员获得一个基本的了解如何真实的建筑物响应真实的雪荷载设计更安全和更经济的建筑物在未来。 本科生将参与该项目，以提供独特的经验和洞察各种屋顶系统的行为。