Seismic performance evaluation of steel building systems in Canada

加拿大钢结构建筑系统的抗震性能评估

• 批准号: 490887-2015
• 负责人: Yang, Tony
• 金额: $ 2.33万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=618119
• 关键词: Seismic; performance; evaluation; steel; building

Steel Building Systems (SBS) are prevalent in low-rise construction in North America. They account for approximately 50% of the total non-residential low-rise construction. SBS are cost effective, durable, expedited for construction scheduling, easy to expand and fully customizable for owners' needs. They are built in a variety of locations with a wide range of applications. In Canada, the National Building Code of Canada (NBCC) (NRCC, 2010) and handbook of steel construction (CSA-S16, 2009) do not consider SBS as one of the pre-qualified seismic force resisting systems. Designers typically follow the American design code (ASCE 7, 2010) where the buildings are designed as Ordinary Moment Resisting Frame. The design approach for Ordinary Moment Resisting Frame requires the member to remain compact, hence able to achieve stable energy dissipation. However, most SBS use non-compact structural members. The ability of using non-compact members as part of the Ordinary Moment Resisting Frame has not been verified analytically or experimentally. This leads to a knowledge gap for the seismic design of SBS in Canada. The proposed research will investigate the seismic design approaches for SBS in Canada. Nonlinear time history dynamic analyses of building systems will be carried out following an approach adopted from the Federal Emergency Management Agency (FEMA) P695 Quantification of Building Seismic Performance Factors (FEMA, 2009). Input earthquake records will be scaled to the site specific uniform hazard spectra for four representative cities in Canada, namely Vancouver, Calgary, Quebec City, and Halifax. The outcome of the research will provide a detailed understanding of the seismic performance of SBS in Canada. The analysis results will be further used to develop robust seismic design guidelines for SBS in high seismic zones in Canada and worldwide.

钢结构建筑体系(SBS)在北美的低层建筑中非常普遍。它们约占非住宅低层建筑总数的50%。SBS具有成本效益高、经久耐用、施工进度加快、易于扩展以及可完全定制以满足业主需求的特点。它们建在不同的地点，有着广泛的应用。在加拿大，加拿大国家建筑规范(NBCC)(NRCC，2010)和钢结构手册(CSA-S16,2009)没有将SBS视为预认证的抗震体系之一。设计师通常遵循美国设计规范(ASCE7,2010)，其中建筑被设计为普通抗弯框架。普通抗弯框架的设计方法要求构件保持紧凑，从而能够实现稳定的耗能。然而，大多数SBS使用非紧凑结构构件。使用非紧凑构件作为普通抗弯框架的一部分的能力尚未得到分析或试验验证。这导致了加拿大对SBS抗震设计的认识空白。这项拟议的研究将调查加拿大SBS的抗震设计方法。根据联邦紧急事务管理局(FEMA)P695《建筑抗震性能系数量化》(FEMA，2009)的方法，将对建筑系统进行非线性时程动力分析。输入的地震记录将根据加拿大四个代表性城市(即温哥华、卡尔加里、魁北克市和哈利法克斯)的场地特定统一危险谱进行缩放。研究结果将提供对加拿大SBS抗震性能的详细了解。分析结果将进一步用于制定加拿大和世界各地高地震区SBS的稳健抗震设计指南。