Development of innovative approaches for ensuring cost-effective global robustness of steel structures

开发创新方法，确保钢结构具有成本效益的全球稳健性

• 批准号: 239020-2010
• 负责人: Driver, Robert
• 金额: $ 3.06万
• 依托单位: University of Alberta
• 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=570551
• 关键词: Development; innovative; approaches; ensuring; cost

Fortunately, structural collapse is a rare event, but it can happen due to a variety of potential triggers. "Progressive collapse" scenarios result in the extent of collapse within a structure being grossly disproportionate to the magnitude of the event that initiated it. This phenomenon has been observed in high-profile events such as the collapse of the Alfred P. Murrah Federal Building in Oklahoma City. Although cases of this magnitude are relatively rare, progressive collapse events that are less publicised also occur. This research will develop new ways of designing steel structures economically in a way that will increase their resistance to progressive collapse failures, should localised damage be imparted due to accidental or intentional explosion, impact, extreme environmental loading (such as earthquakes or tornado/hurricane damage), structural deficiency, or any other unexpected, but extreme, event. The research will involve large-scale testing of structural components, as well as computer simulations of structures that mimic global structural behaviour in the damaged state. Arising from this research program will be specific design guidance that will maximise structural integrity and robustness of steel structures, while keeping economics as a key consideration. These guidelines will be recommended for implementation into design codes and standards within Canada and internationally in order to prevent progressive collapse from occurring as a result of localised structural damage.

幸运的是，结构性崩溃是一种罕见的事件，但由于各种潜在的触发因素，它可能会发生。“渐进式倒塌”情景导致建筑物内部倒塌的程度与引发倒塌的事件的严重程度严重不成比例。这一现象在备受瞩目的事件中得到了观察，例如俄克拉荷马城阿尔弗雷德·P·默拉联邦大楼的倒塌。尽管这种规模的案例相对罕见，但也会发生鲜为人知的渐进性崩盘事件。 这项研究将开发经济设计钢结构的新方法，以提高其对渐进倒塌故障的抵抗力，如果由于意外或故意的爆炸、冲击、极端环境载荷(如地震或龙卷风/飓风破坏)、结构缺陷或任何其他意外但极端的事件造成局部破坏。这项研究将涉及对结构部件的大规模测试，以及对模仿受损状态下整体结构行为的结构的计算机模拟。 这项研究计划将产生具体的设计指南，使钢结构的结构完整性和坚固性最大化，同时将经济性作为关键考虑因素。这些准则将被推荐用于加拿大国内和国际上的设计规范和标准中，以防止局部结构损坏导致的渐进性倒塌。