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: 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=636420
• 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，结构性倒塌是一种罕见的事件，但它可能由于各种潜在的触发因素而发生。“渐进式倒塌”情景导致建筑物内的倒塌程度与引发倒塌的事件的严重程度严重不成比例。这种现象在诸如俄克拉荷马州市阿尔弗雷德·P·默拉联邦大楼倒塌等备受瞩目的事件中已经观察到。虽然这种规模的情况相对较少，但也会发生较少报道的连续倒塌事件。这项研究将开发新的方法，以经济的方式设计钢结构，以提高其抵抗连续倒塌故障的能力，如果由于意外或故意爆炸，冲击，极端环境负荷造成局部损坏（例如地震或龙卷风/飓风破坏）、结构缺陷或任何其他意外但极端的事件。该研究将包括对结构部件进行大规模测试，以及对结构进行计算机模拟，以模拟受损状态下的整体结构行为。从该研究计划中产生的具体设计指导将最大限度地提高钢结构的结构完整性和鲁棒性，同时保持经济性作为关键考虑因素。建议将这些准则纳入加拿大和国际设计规范和标准，以防止由于局部结构损坏而发生连续倒塌。