Resilient concrete masonry walls to meet the needs for the next generation of low-rise structures

弹性混凝土砌体墙可满足下一代低层结构的需求

• 批准号: 528050-2018
• 负责人: CruzNoguez, CarlosCA
• 金额: $ 0.58万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development 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=748901
• 关键词: Resilient; concrete; masonry; walls; meet

Load bearing slender masonry walls (SMWs) are widely used in single-storey construction in Canada (for example in school gymnasiums, warehouses, etc.). However, design limits imposed on these walls (CSA S304-14; TMS 402-13) tend to be stringent, in terms of strength and stability. This puts the masonry industry at a disadvantage as a construction alternative compared to other structural options. Research and innovation in slender masonry wall design has been scarce since the 1980s, when working stress and prescriptive-based design was common. This has had a negative impact on the use of conventional slender masonry walls, as limit states and objective-based design have since been adopted. Adding to these challenges, newer building energy code regulations (NRC 2015 and 2017) place further constraints that impact the design, cost, and performance of SMWs.The proposed research will (1) examine the structural performance of conventional slender masonry walls; (2) develop innovative wall systems with superior performance compared to current construction and evaluate their hygrothermal (hygric and thermal) performance; (3) enhance design methods for SMWs through the application of probabilistic and first-principles-based analysis models within a rigorous reliability framework and develop a performance-based design tool; and (4) enhance the thermal energy storage function of SMWs and quantify its contribution to meeting code energy requirements.The proposed project is something that is long overdue for the industry, it has been an item that has garnered wide interest from the members of both sponsoring associations, CMDC and CCMPA, as well as the design community and CSA S304 standards committee. This research program has sufficient scope to provide the industry with enough technical knowledge to implement a substantial change to the way masonry is designed and constructed across Canada, resulting in safer, more durable, and eco-friendly masonry constructive systems -- training 19 highly qualified engineers throughout the project.

承重细长砌体墙（SMW）在加拿大的单层建筑中广泛使用（例如学校体育馆、仓库等）。 然而，在强度和稳定性方面，对这些墙壁施加的设计限制（CSA S304-14；TMS 402-13）往往很严格。 与其他结构选择相比，这使得砖石行业作为建筑替代方案处于不利地位。 自 20 世纪 80 年代以来，细长砌体墙设计的研究和创新一直很少，当时工作压力和规范性设计很常见。这对传统细长砌体墙的使用产生了负面影响，因为此后采用了极限状态和基于目标的设计。除了这些挑战之外，新的建筑能源法规（NRC 2015 和 2017）还对影响 SMW 的设计、成本和性能提出了进一步的限制。拟议的研究将（1）检查传统细长砖石墙的结构性能； (2) 开发与现有建筑相比性能优越的创新墙体系统，并评估其湿热（湿和热）性能； (3) 通过在严格的可靠性框架内应用概率和基于第一原理的分析模型来增强小型MW的设计方法，并开发基于性能的设计工具； (4) 增强小型MW的热能存储功能，并量化其对满足规范能源要求的贡献。拟议的项目是业界期待已久的项目，它已经引起了双方成员的广泛兴趣赞助协会、CMDC 和 CCMPA，以及设计界和 CSA S304 标准委员会。 该研究计划有足够的范围，为行业提供足够的技术知识，以对加拿大各地的砖石设计和施工方式进行重大改变，从而产生更安全、更耐用、更环保的砖石建筑系统——培训 19 名高素质人员整个项目的工程师。