Structural Performance of Post-Tensioned Building Systems under Realistic Fire Exposure

真实火灾暴露下后张法建筑系统的结构性能

• 批准号: RGPIN-2015-05081
• 负责人: Gales, John
• 金额: $ 1.64万
• 依托单位: Carleton University
• 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=636463
• 关键词: Structural; Performance; Post; Tensioned; Building; Structural; Performance; Post; Tensioned; Building

Post-tensioned building systems are popular with designers as they allow long spans. This trend brings new challenges in the design of structures for fire safety. In addition to the complexity of these building systems, fires behave differently in large spaces than they do in small rooms. The severity and size of fires affects the structural response of exposed structures. To ensure safety in a cost-effective manner, fire design guidance appropriate to these building systems is required. This proposed research program will investigate post-tensioned building systems typically used for long spans (concrete, timber) under various heating scenarios. These systems have seen limited research attention for their structural performance in fire. The overarching objective of this research is to develop an understanding of the structural performance of post-tensioned structures in fire, with the ultimate aim of discovering how real fires impact whole post-tensioned buildings. Given the high cost of testing whole buildings in fire, numerical modelling tools are essential. There is a need for experimental data to support numerical efforts. This research program therefore seeks to meet the following objectives:(1) create a novel semi-active feedback heating system capable of heating long-span building systems following a well-defined fire exposure; (2) explore and understand the fundamental mechanisms of these building systems under a variety of fire scenarios; and (3) develop validated modelling technologies to describe the response of these building systems to fire. This research program will train 7 graduate and 5 undergraduate highly qualified personnel to apply the research findings to meet society’s fire protection requirements. There has been a dearth of activity considering how post-tensioned building systems respond to realistic fire conditions. Test equipment, experimental data, and novel insights into fire-induced structural performance will be obtained to address this knowledge gap. This will help global communities of engineers, architects, and practitioners develop objective and performance-based fire design methodologies. Our national community will benefit, as some building systems considered in this program have not commonly been applied in Canada. This research will develop suitable knowledge and recommendations for the implementation of innovative building systems.

张紧后的建筑系统在设计师允许长时间的情况下很受欢迎。这种趋势为消防安全的结构设计带来了新的挑战。除了这些建筑系统的复杂性外，在大空间中，Fire的行为与在小房间中的行为不同。火灾的严重程度和大小会影响暴露结构的结构反应。为了确保以具有成本效益的方式确保安全，需要适合这些建筑系统的消防设计指南。该提出的研究计划将调查通常用于长跨度（混凝土，木材）的后建筑系统，在各种供暖方案下。这些系统对其在火中的结构性表现有限的关注有限。这项研究的总体目的是对火灾后张紧结构的结构性能有所了解，最终目的是发现真正的火灾如何影响整个后张后的建筑物。鉴于在火灾中测试整个建筑物的高成本，数值建模工具至关重要。需要实验数据来支持数值工作。因此，该研究计划旨在满足以下目标：（1）创建一种新型的半活动反馈加热系统，能够在定义明确的火灾下加热长跨度建筑系统； （2）在各种火灾场景下探索和理解这些建筑系统的基本机制； （3）开发有效的建模技术来描述这些建筑系统对开火的响应。该研究计划将培训7名研究生和5名本科高素质的人员，以应用研究结果以满足社会的防火要求。考虑到后张贴后的建筑系统如何应对现实的火灾状况，活动已经死亡。测试设备，实验数据和对火灾引起的结构性能的新见解，以解决这一知识差距。这将有助于全球工程师，建筑师和从业者开发客观和基于绩效的消防设计方法。我们的民族社区将受益，因为该计划中考虑的一些建筑系统在加拿大并不常用。这项研究将为实施创新的建筑系统提供合适的知识和建议。