Behaviour of Wood Structures Subjected to Blast Loads

蓄意袭击和意外爆炸突显了对材料对爆炸载荷的结构响应进行更多研究的必要性。目前，关于结构构件在爆炸载荷下的响应的实验测试数据有限，尤其是在木材上。加拿大标准协会(CSA)目前正在制定一份文件，以解决爆炸荷载下建筑物的荷载和性能标准(CSA S850)。木材作为一种材料选项被包括在标准中，然而，关于木材在爆炸载荷下的行为的信息缺乏。探索奖助金计划下的研究成果将转化为CSA S850标准以及木材设计标准(CSA O86)中的具体设计要求。拟议研究计划的目标是通过建立关键结构成员的能力关系来评估给定爆炸事件下的损害并确定剩余承载能力以进行逐步倒塌分析，从而减少与木结构极端荷载相关的危险。研究的实验部分将在渥太华大学新成立的激波管实验室进行，这是加拿大独一无二的设施，它将使申请者有很好的机会在一个非常需要知识的领域进行世界级的研究。使用激波管的实验工作将构成拟议研究计划的核心，它将为学生提供一个独特的机会，让他们在最先进的设施中获得经验，并在一个尚未得到很好研究的课题上获得经验。所有HQP将进行实验研究和分析工作。目标是确保每个学生毕业后都能在学术或工业环境中发挥专业作用。这一及时的研究将使学生能够追求研究人员的职业生涯，并为政府和非政府机构培养咨询工程师。此外，它们在爆炸加载、性能和建模方面的经验将使它们对结构工程公司具有极大的吸引力。

Deliberate attacks and accidental explosions have highlighted the need for more research in the structural response of materials to blast loading. Currently there is a limited amount of experimental test data available on the response of structural elements exposed to blast loads, especially on wood. The Canadian Standard Association (CSA) is currently developing a document to address load and performance criteria for buildings under blast loading (CSA S850). Wood is included in the standard as a material option, however, information on the behaviour of wood under blast loading is lacking. Outcomes from research under the Discovery Grant program will translate into specific design requirements in the CSA S850 standard as well as in the timber design standard (CSA O86). The objective for the proposed research program is to reduce the hazards associated with extreme loads on wood structures through developing capacity relationships for critical structural members to evaluate damage under a given blast event and determine residual load-bearing capacity for the purpose of progressive collapse analysis. The experimental component of the research will be conducted in the newly established Shock Tube lab at the University of Ottawa, which is a unique facility in Canada, and it will allow the applicant the great opportunity to conduct world-class research in an area in which knowledge is much needed. Experimental work using the shock tube will form the core of the proposed research program, and it will provide a unique opportunity for students to gain experience in a state-of-the-art facility and gain experience in a topic that has not been well studied. All HQP will conduct experimental research as well as analytical work. The goal is to ensure that upon graduation, each student could function professionally in an academic or industrial setting. This timely research will allow students to pursue careers as researchers, and blast consulting engineers for government and nongovernment agencies. Furthermore, their experience in blast loading, performance and modelling will make them highly attractive to structural engineering firms.