Seismic-resilient partially grouted reinforced concrete masonry building systems

抗震部分灌浆钢筋混凝土砌体建筑系统

• 批准号: 548808-2019
• 负责人: Galal, KhaledKE
• 金额: $ 7.29万
• 依托单位: Concordia University
• 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=746357
• 关键词: Seismic; resilient; partially; grouted; reinforced

The masonry construction industry represents a substantial portion of both existing and new residential, commercial and industrial low- to medium-rise structures across Canada. Reinforced Concrete Masonry (RCM) structural walls constructed with concrete block units are an effective seismic force-resisting system that provides lateral strength, stiffness, and energy dissipation capacity required to resist lateral loads arising from earthquakes or high wind. The economical and resilient seismic design of RCM buildings in regions with moderate seismicity requires special considerations of the detailing of the seismic force-resisting walls for sufficient ductility and energy dissipation capacity under the design level ground motion. The main objective of this proposal is to develop seismic-resilient lateral force resisting systems for masonry buildings in low to moderate seismicity regions. The intent is to enhance the current detailing practices of partially grouted RCM shear walls, and improve their seismic performance and resilience. The research focus areas include the following: (1) experimental investigation of the enhancement in seismic performance parameters of scaled models of planar and non-planar partially grouted RCM shear walls with varying design detailing and configurations; (2) development, calibration, and validation of detailed numerical models to simulate the nonlinear response of partially grouted RCM shear walls; (3) numerical parametric studies to quantify the effects of different design parameters; (4) evaluation of the system-level response when utilizing partially grouted RCM walls with the enhanced configurations and detailing; and (5) quantification of the enhancements in seismic-resilience of the proposed partially grouted masonry building system.In addition to enhancing seismic hazard safety in Canada, the proposed research will generate new and complementary experimental and analytical fundamental knowledge, practical advancements, code design provisions and prescriptive detailing requirements, as well as training of HQP, which will have significant impact for the multi-billion-dollar masonry manufacturing, design, and construction industries in Canada.

在加拿大现有和新建的住宅、商业和工业中低层建筑中，砖石建筑行业占了相当大的比例。钢筋混凝土砌块(RCM)结构墙是一种有效的抗震体系，它提供了抵抗地震或大风产生的横向荷载所需的横向强度、刚度和能量耗散能力。在中等地震活动区进行RCM建筑的经济和弹性抗震设计，需要特别考虑抗震墙的细节，以确保在设计水平地震动下具有足够的延性和耗能能力。这项建议的主要目标是为中低地震活动区的砖混结构建筑开发具有地震弹性的侧向力抵抗体系。其目的是加强目前局部灌浆的RCM剪力墙的细部做法，并改善其抗震性能和弹性。研究的重点包括以下几个方面：(1)不同设计细节和配置的平面和非平面部分灌浆RCM剪力墙缩尺模型抗震性能参数增强的试验研究；(2)模拟部分灌浆RCM剪力墙非线性反应的详细数值模型的建立、校准和验证；(3)量化不同设计参数影响的数值参数研究；(4)采用增强配置和细节的部分灌浆RCM剪力墙时的体系水平反应评估；除了增强加拿大的地震危险性外，拟议的研究还将产生新的和补充的实验和分析基础知识、实践进步、规范设计规定和规范性详细要求，以及对HQP的培训，这将对加拿大价值数十亿美元的砖石制造、设计和建筑行业产生重大影响。