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.

急需研究需要开发新颖和增值的木材应用程序，以最大程度地利用可持续收获加拿大丰富的森林，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。与光框木材或混凝土结构（例如高级预制和快速勃起）相比，跨层层的木材（CLT）提供了许多好处。因此，CLT构成了许多结构应用的有前途的解决方案，包括作为大型住宅和商业建筑的地板。在建筑行业中，广泛一致的是，在没有梁的柱子上直接支持CLT的+面板结构系统，这对于质量木材中期和高层多单元住宅结构而言是最具成本竞争力的。它是可以在私人开发人员级别与混凝土或钢竞争的结构解决方案。但是，缺乏CLT面板打孔剪切设计的科学设计指导是广泛采用的最重要的障碍。使用实验方法，该联盟项目将研究CLT打孔器的剪切强度，并为点支持的CLT地板面板提出设计方法。