Design of braced tall-mass timber building

加拿大城市人口的快速增长和相关的环境问题在一定程度上影响了城市规划者和建筑利益相关者考虑“可持续城市化”替代方案。可持续城市化已成为建设具有弹性和环境友好型智慧宜居城市的可行解决方案。2015年，加拿大国家建筑规范将木结构建筑的高度限制从4层提高到6层。截至2017年，最高的高层木结构建筑是英属哥伦比亚大学（UBC）的一栋18层的Brock Commons学生宿舍。主要的抗侧荷载单元，用于风和地震荷载，是两个混凝土剪力墙。这种类型的系统被称为混合建筑。尽管轻型木结构建筑被限制在6层，但随着大木结构建筑的引入，再加上创新的支撑系统，在本提案中，它设想将高度扩展到30层木结构建筑，并制定相关的设计指南。支撑需要使用阻尼器和耗能连接器。预计该设计指南将增强建筑师、结构工程师、业主和承包商对高层木结构建筑的信心。从长远来看，拟议研究的最终结果将增加建筑物内的木材量，这将支持加拿大的林业业务，特别是北欧的工程师：-在公共和私人项目中最大限度地适当使用木材，-加强加拿大生产高质量木制品和建筑系统的能力，并加速采用现有和新兴的木制品和建筑系统。

The rapid growth of Canadians urban population and the associated environmental concerns are partlyinfluencing city planners and construction stakeholders to consider "Sustainable Urbanization" alternatives.The sustainable urbanization has emerged as a viable solution towards smart and liveable cities that areresilient and environmentally friendly. In 2015, the National Building Code of Canada has raised the heightlimits on timber frame construction from 4 to 6 storeys. As of 2017, the tallest tall-wood building, is an18-story Brock Commons student residency at the University of British Columbia (UBC). The primary lateralload resisting element, for wind and earthquake loads, is two concrete shear walls. This type of system isknown as hybrid building. Even though light timber frame construction is limited to 6-storey, with theintroduction of mass-timber buildings, coupled with innovative bracing system, in this proposal, it isenvisioned to extend the height to 30-story timber building and develop relevant design guideline. The bracingentails use of dampers and energy-dissipator connectors. It is envisioned that the design guideline wouldenhance the confidence of architects, structural engineers, owners and contractors, towards tall mass-timberbuildings. In the long term the final outcome of the proposed research would increase the volume of wood inbuildings, which will support the forestry business in Canada and engineers at Nordic in particular by:-maximizing the appropriate use of wood in public and private projects,-Strengthening Canada's capacity to produce high quality wood-based products and building systems, and-accelerating adoption of existing and emerging wood-based products and building systems.