Seismic behaviour of tall reinforced masonry shear walls

高配筋砌体剪力墙的抗震性能

• 批准号: 552325-2020
• 负责人: Yang, TonyT
• 金额: $ 2.62万
• 依托单位: University of 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=749284
• 关键词: Seismic; behaviour; tall; reinforced; masonry

Reinforced masonry (RM) has been used in Canada for more than 50 years, mostly for construction of low- and medium-rise buildings. The National Building Code of Canada 2015 (NBC 2015) permits the use of Ductile Shear Wall class for tall masonry buildings, but the height limit was set to 60 m (approximately 20 storeys) at sites characterized by moderate seismic hazard index (0.75 or less), and to 40 m (approximately 13 storeys) for high seismic hazard sites (seismic hazard index higher than 0.75). Although the NBC 2015 permits application of ductile RM wall class for construction of tall buildings in Canada, with the height limits comparable to buildings with RC shear walls, actual field applications of these buildings are still very limited. Only a few tall (20+ storey high) RM buildings have been constructed in Canada to date, mostly at sites with low to moderate seismic hazard. Limited field applications of tall buildings in Canada can be partially attributed to a scarce database of past experimental research studies on the subject.The proposed project will examine seismic response of Tall Reinforced Masonry (TRM) shear walls for field applications in Canada with opportunities to export this knowledge to other countries. The proposal includes a robust experimental and analytical research program which will be carried out at the University of British Columbia, Vancouver campus. Seismic response of TRM shear wall specimens characterized by high aspect ratios (in the range from 7.0 to 25.0) will be examined at the material, structural component, and structural system level. A hybrid experimental and numerical simulation will be performed at the system level to study seismic response of TRM buildings subjected to earthquake excitation. This is believed to be the first application of hybrid technology on TRM wall structures on a global scale. The experimental program proposed in this project will provide much needed experimental evidence related to seismic performance of TRM shear walls which is required for developers, architects, and engineers engaged in design and construction of tall buildings. The guidelines resulting from the experimental and analytical studies will provide required tools for design engineers who currently do not have adequate training related to design of tall masonry buildings.

钢筋砌体 (RM) 在加拿大的使用已有 50 多年的历史，主要用于建造中低层建筑。 2015 年加拿大国家建筑规范 (NBC 2015) 允许高层砌体建筑使用延性剪力墙等级，但在地震危险指数中等（0.75 或更低）的地点，高度限制设置为 60 m（约 20 层） ），高地震危险场所（地震危险指数高于0.75）为40 m（约13层）。 尽管 NBC 2015 允许在加拿大高层建筑中应用延性 RM 墙体等级，其高度限制与 RC 剪力墙建筑相当，但这些建筑的实际现场应用仍然非常有限。迄今为止，加拿大仅建造了几座高层（20 层以上）RM 建筑，大部分位于低至中度地震危险的地点。加拿大高层建筑的现场应用有限，部分原因是过去有关该主题的实验研究数据库稀缺。拟议项目将检查高层钢筋砌体（TRM）剪力墙的地震响应，以供加拿大现场应用，并有机会出口将这些知识传播给其他国家。该提案包括一项强有力的实验和分析研究计划，该计划将在不列颠哥伦比亚大学温哥华校区进行。以高纵横比（7.0 至 25.0 范围内）为特征的 TRM 剪力墙试件的地震响应将在材料、结构部件和结构系统层面进行检查。将在系统层面进行混合实验和数值模拟，以研究 TRM 建筑物在地震激励下的地震响应。这被认为是全球范围内混合技术在TRM墙体结构上的首次应用。本项目提出的实验方案将为从事高层建筑设计和施工的开发商、建筑师和工程师提供急需的TRM剪力墙抗震性能相关实验证据。实验和分析研究得出的指南将为目前没有接受过与高层砖石建筑设计相关的足够培训的设计工程师提供所需的工具。