Stability and Integrity of Cold-formed Steel Mid-rise Building in Post-Earthquake Fire

冷弯型钢中层建筑在震后火灾中的稳定性和完整性

• 批准号: 203154-2013
• 负责人: XU, Lei
• 金额: $ 1.75万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=569881
• 关键词: Stability; Integrity; Cold; formed; Steel

Following its great success in North America, the worldwide trend of applying cold-formed steel framing in residential and commercial building construction is advancing to mid-rise buildings up to nine storeys, particularly in seismic regions, where such buildings traditionally have relied on heavier construction materials. Historically, risks associated with fire following a strong earthquake are very high (1906 San Francisco, 1923 Tokyo, 1989 Loma Prieta, 1994 Northridge and 1995 Kobe), posing a major threat to public safety and property in seismic regions. Buildings are currently designed to conform to modern building codes treating earthquakes and fires as separate hazards, and fire safety is based on the assumption of the integrity and normal performance of fireproofing and structural system. In the case of post-earthquake fire, both systems can be damaged in an earthquake; therefore, the structural resistances to subsequent fires can be seriously degraded. The objective of the research proposed is to develop a practical and advanced methodology for assessing the stability and integrity of cold-formed steel (CFS) structures in post-earthquake fire. It should be noted that no research in this area has been carried out in the past. As the proposed research addresses a serious issue that modern building codes, like the National Building Code of Canada, have not appropriately addressed, the importance of the research is to enhance the life-safety performance of the structures, including improved protection against catastrophic collapse to safeguard the safety of the public as well as that of rescue workers and firefighters in the event of post-earthquake fire. Canadians and people elsewhere in the world, particularly those in seismic regions, will benefit from having significantly safer building environments in which to live and work. Considering the high catastrophic consequences of fire following earthquakes, research concerning the design of mid-rise CFS buildings to guard against post-earthquake fire is imperative and far overdue in Canada. This research will develop HQPs with the skills required to address technical and social challenges of significant importance to the life, safety and property of Canadians.

在北美取得巨大成功之后，在住宅和商业建筑中应用冷弯型钢框架的全球趋势正在向九层以下的中层建筑推进，特别是在地震地区，这些建筑传统上依赖于较重的建筑材料。从历史上看，强震后的火灾风险非常高（1906年的旧金山，1923年的东京，1989年的洛马普里塔，1994年的北岭和1995年的神户），对地震区的公共安全和财产构成重大威胁。目前的建筑设计符合现代建筑规范，将地震和火灾视为单独的危险，消防安全是基于防火和结构系统的完整性和正常性能的假设。在地震后发生火灾的情况下，这两个系统都可能在地震中受损；因此，结构对后续火灾的抵抗力可能会严重下降。