Inelastic seismic design of cold-formed steel strap braced walls

冷弯型钢带支撑墙非弹性抗震设计

• 批准号: 342309-2006
• 负责人: Rogers, Colin
• 金额: $ 1.42万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=364675
• 关键词: Inelastic; seismic; design; cold; formed

The current design codes and standards in Canada do not contain provisions with which buildings constructed with cold-formed steel framing, specifically strap braced wall systems, can be designed for seismic forces. This lack of design information severely limits the ability of the steel industry to construct buildings in areas of moderate to high seismic hazard across the country, and hence to compete with other light framing materials. Engineers are not able to design cold-formed steel buildings because the relevant seismic design information and supporting research is not available. The main objective of the proposed research is to develop seismic design guidelines for strap braced cold-formed steel framed walls that can be used in conjunction with the 2005 National Building Code of Canada. The recommendation of seismic force modification factors, ductile detailing requirements and inelastic performance levels will be made possible through the completion of an extensive full-scale test program and the modeling / computer analyses of representative buildings under scaled ground motion records. With this information CSSBI member companies and designers will be able to make informed decisions on the selection of framing materials, will be able to design ductile steel framing systems that are able to dissipate earthquake induced energy, and will be able to provide building owners and occupants with a safer and more cost competitive steel structure. CSSBI member companies, the steel industry in general, fabricators and builders, will be able to better compete with other framing types in areas of the country where high seismic forces are a major design issue.

加拿大目前的设计规范和标准没有规定用冷弯型钢框架建造的建筑物，特别是带支撑墙系统，可以在地震作用下进行设计。这种设计信息的缺乏严重限制了钢铁行业在全国地震危险性中等到高度的地区建造建筑的能力，从而限制了它们与其他轻型框架材料的竞争。由于缺乏相关的抗震设计资料和配套研究，工程师无法设计冷弯薄壁型钢建筑。拟议研究的主要目标是制定可与2005年加拿大国家建筑规范结合使用的带状支撑冷弯型钢框架墙的抗震设计准则。地震力修正系数、延性细部要求和非弹性性能水平的建议将通过完成一项广泛的全尺寸试验计划和对具有代表性的建筑物在按比例进行地面运动记录下的建模/计算机分析来实现。有了这些信息，CSSBI成员公司和设计师将能够在框架材料的选择上做出明智的决定，能够设计能够消散地震能量的延性钢框架系统，并能够为建筑物所有者和居住者提供更安全和更具成本竞争力的钢结构。CSSBI成员公司、整个钢铁行业、制造商和建筑商，将能够在高地震力是主要设计问题的国家地区更好地与其他框架类型竞争。