Inelastic seismic design of cold-formed steel strap braced walls

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，可以设计用于地震力。这种设计信息的缺乏严重限制了钢铁工业在全国范围内中度到高度地震危险地区建造建筑物的能力，因此与其他轻型框架材料竞争。由于缺乏相关的抗震设计信息和配套研究，工程师无法设计冷弯型钢建筑。拟议研究的主要目的是为冷弯型钢框架带支撑墙制定抗震设计指南，该指南可与2005年加拿大国家建筑规范结合使用。通过完成广泛的全尺寸测试程序以及在按比例的地面运动记录下对代表性建筑物进行建模/计算机分析，将有可能提出地震力修正因子、延性细节要求和非弹性性能水平的建议。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，将能够设计出能够消散地震引起的能量的延展性钢框架系统，并将能够为建筑业主和居住者提供更安全、更具成本竞争力的钢结构。CSSBI成员公司，一般的钢铁行业，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。

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.