Ceiling fires in timber buildings

木结构建筑天花板火灾

• 批准号: EP/X042502/1
• 负责人: Angus Law
• 金额: $ 48.2万
• 依托单位: University of Edinburgh
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2024
• 资助国家: 英国
• 起止时间: 2024 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FX042502%2F1
• 关键词: Ceiling; fires; timber; buildings

The construction industry is seeking to address its carbon emissions by using more sustainable, low-carbon building materials and systems. One method of construction that is becoming increasingly common is Cross Laminated Timber (CLT). This product allows huge slabs (and walls) of timber to be created by gluing lots of individual (smaller) planks together. One challenge with this way of building is that timber (unlike brick, stone, steel or concrete) burns. Exposed timber ceilings are very common in CLT buildings. Where there is exposed timber, there is always the possibility for increased fire spread. This generates a significant risk that the resulting fire dynamics could violate many underpinning assumptions of existing measures to provide adequate fire safety in buildings, and thus requires investigation.This research will study the ignition and burning of exposed timber ceilings. The research team will study this by burning timber at small scale (~10 cm wide samples) to study how the timber ignites and how the flame then heats its environment. The team will then scale up to study how one piece of burning timber, can ignite another (adjacent) piece of timber. Finally, the team will ignite fires in ~1m wide timber rooms and study how the fire spreads. The novelty of this research will be the focus on exposed timber ceilings, which as particular importance for commercial timber buildings. Much of the existing knowledge about burning timber has been generated when the timber is in the "floor" or "wall" condition. The technical challenge is in linking together the small scale experiments with the "room scale" fires.The work will be undertaken using existing facilities at the University of Edinburgh's Rushbrook Fire Laboratory. The research will take advantage of the existing depth of knowledge that the University of Edinburgh already have in this area and will help to enable the safe use of this form of construction in the UK's construction industry.

建筑行业正在寻求通过使用更可持续的低碳建筑材料和系统来解决碳排放问题。交叉层压木材 (CLT) 是一种越来越常见的建筑方法。该产品允许通过将许多单独的（较小的）木板粘合在一起来创建巨大的木板（和墙壁）。这种建筑方式的一个挑战是木材（与砖、石、钢或混凝土不同）会燃烧。裸露的木质天花板在 CLT 建筑中很常见。在有裸露木材的地方，火势蔓延的可能性总是增加。这产生了重大风险，即由此产生的火灾动态可能违反现有措施的许多基本假设，以确保建筑物充分消防安全，因此需要进行调查。本研究将研究裸露木材天花板的着火和燃烧。研究小组将通过小规模燃烧木材（约 10 厘米宽的样品）来研究木材如何点燃以及火焰如何加热其环境。然后，该团队将扩大规模，研究一块燃烧的木材如何点燃另一块（相邻的）木材。最后，团队将在约 1m 宽的木屋内点燃火灾，并研究火势如何蔓延。这项研究的新颖之处在于将重点放在裸露的木质天花板上，这对于商业木结构建筑尤其重要。许多关于燃烧木材的现有知识是在木材处于“地板”或“墙壁”状态时产生的。技术挑战是将小规模实验与“房间规模”火灾联系起来。这项工作将利用爱丁堡大学拉什布鲁克火灾实验室的现有设施进行。该研究将利用爱丁堡大学在该领域现有的深度知识，并将有助于在英国建筑行业安全使用这种建筑形式。