Developing a Guideline for Seismic Performance-Based Design of Steel Building Structures

现行建筑物抗震设计规范和标准采用规范性设计方法，以提供安全性并防止建筑物在严重地震下失效或倒塌。然而，这些规范性程序并未明确规定结构的预期绩效水平。在大多数情况下，说明性设计并不验证结构是否会达到预期的性能水平。作为替代方案，开发了基于性能的抗震设计方法，包括定义预期性能目标、进行初始设计和验证性能。基于性能的设计方法将建筑设计与预期性能水平、可能的维修成本、经济损失和其他后果直接联系起来，从而允许向建筑物所有者、利益相关者和决策者传达预期性能水平。尽管使用基于性能的设计方法有几个好处，但目前加拿大的设计规范和标准中尚未提供明确的指导方针。该项目将帮助行业合作伙伴Thornton Tomasetti和整个工程设计行业，为加拿大钢结构建筑使用基于性能的抗震设计方法制定详细的设计指南。该项目将调查设计方法对加拿大钢建筑结构抗震性能的影响。

Current seismic design codes and standards for buildings adopt a prescriptive design approach to provide safety and prevent failure or collapse of buildings under severe earthquakes. However, these prescriptive procedures do not explicitly define the expected performance levels for the structure. In most cases, the prescriptive design does not verify whether the structure would achieve the desired level of performance. As an alternative, a performance-based seismic design approach has been developed that involves defining expected performance objectives, conducting initial design and verifying performance. The performance-based design approach directly relates the building design to the expected performance levels, probable repair costs, economic losses and other consequences, thus allowing for communicating the expected performance levels to buildings owners, stakeholders, and decision makers. Despite several benefits in using a performance-based design method, explicit guidelines are not yet provided in current Canadian design codes and standards. This project will help the industry partner, Thornton Tomasetti, and the engineering design profession as a whole, by developing a detailed design guideline for using the performance-based seismic design method for steel buildings in Canada. The project will investigate the impact of the design method on the seismic performance of steel building structures in Canada.