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High-performance cross-laminated timber shear walls

高性能交叉层压木剪力墙

基本信息

批准号：
565302-2021
负责人：
Tannert, Thomas
金额：
$ 2.19万
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：
2021
资助国家：
加拿大
起止时间：
2021-01-01 至 2022-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=722061
关键词：
performance cross laminated timber shear

项目摘要

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 shear walls for large and tall residential and commercial buildings, yet the current lack of specific design guidance for CLT shear walls leads to uneconomical and inefficient structural solutions. More detailed procedures to estimate the resistance of CLT shear walls are required, specifically, guidance with respect to the net section resistance of CLT panels at hold-downs and the required number of fasteners. Using experimental and analytical methods, this Alliance project will investigate the viability of self-tapping screws (STS) as high-performance connections for CLT shear walls. The project will facilitate the development of reliable design guidance for STS connections in CLT shear wall systems that constitute a promising solution for many applications, including tall structures where the design is governed by seismic loading.

迫切需要研究开发木材的新颖和增值应用，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，交叉叠层木材(CLT)提供了许多优点，例如高水平的预制和快速安装。因此，CLT为许多结构应用提供了一种有前途的解决方案，包括用作大型和高层住宅和商业建筑的剪力墙，但目前CLT剪力墙缺乏具体的设计指南，导致结构解决方案不经济且效率低下。需要更详细的程序来估计CLT剪力墙的抗力，特别是关于CLT面板在保持时的净截面抗力和所需紧固件数量的指导。利用实验和分析方法，该联盟项目将研究自攻螺钉(STS)作为CLT剪力墙高性能连接的可行性。该项目将促进为CLT剪力墙系统中的STS连接制定可靠的设计指南，这构成了许多应用的有前途的解决方案，包括设计受地震荷载控制的高层建筑。