Punching-shear strength of cross-laminated timber panels

交叉层压木板的冲剪强度

• 批准号: 576735-2022
• 负责人: Tannert, ThomasT
• 金额: $ 4.37万
• 依托单位: University of Northern British Columbia
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=764693
• 关键词: Punching; shear; strength; cross; laminated

There is an acute need for research to develop novel and value-added applications for wood to maximize the benefits from sustainably harvesting Canada's abundant forests and to reduce the carbon footprint of buildings by expanding the use of the sustainable material wood. Cross-laminated timber (CLT) provides many benefits when compared to either light-frame wood or concrete construction, such as a high-level of prefabrication and fast erection. As such, CLT constitutes a promising solution for numerous structural applications, including as floors for large residential and commercial buildings. It is widely agreed in the construction industry that Post+Panel structural systems, where CLT are directly point-supported on columns without beams, are the most cost competitive for mass timber mid and high-rise multi-unit residential structures; it is the structural solution that can compete with concrete or steel at a private developer level. However, the lack of scientific design guidance for the punching shear design of CLT panels is the most significant barrier to widespread adoption. Using experimental methods, this Alliance project will investigate the CLT punching shear strength and propose design methods for point supported CLT floors panels.

迫切需要研究开发木材的新型增值应用，以最大限度地从可持续采伐加拿大丰富的森林中获益，并通过扩大可持续材料木材的使用来减少建筑物的碳足迹。与轻型木结构或混凝土结构相比，交叉层压木材（CLT）具有许多优点，例如高水平的预制和快速安装。因此，CLT构成了许多结构应用的有前途的解决方案，包括大型住宅和商业建筑的地板。在建筑行业中，人们普遍认为Post+Panel结构系统（CLT直接点支撑在柱上而没有梁）是大规模木材中高层多单元住宅结构中最具成本竞争力的;它是可以与私人开发商级别的混凝土或钢竞争的结构解决方案。然而，缺乏科学的冲切设计指导CLT板的设计是广泛采用的最重要的障碍。使用实验方法，该联盟项目将调查CLT冲切强度，并提出点支撑CLT楼板的设计方法。