Controlled rocking reinforced masonry systems for enhanced resilience under seismic risk

受控摇动加固砌体系统可增强地震风险下的恢复能力

• 批准号: 511846-2017
• 负责人: Wiebe, Lydell
• 金额: $ 7.29万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=692679
• 关键词: Controlled; rocking; reinforced; masonry; systems

There is a real potential for a major earthquake to be the costliest disaster in Canadian history, and building owners are increasingly expecting solutions that can mitigate this risk. Meanwhile, current approaches for resisting seismic loads with reinforced masonry are not only associated with significant labour costs, but they also limit the range of structural heights for which reinforced masonry is a competitive building solution.Controlled rocking shows promise for addressing all these issues. In a controlled rocking system, selected parts of the structure are permitted to uplift from the foundation in response to seismic loads, and this rocking behaviour is controlled using supplemental energy dissipation and/or post-tensioning.This research project aims to develop a new controlled rocking masonry system that is designed for both constructability and resilience under earthquake loading, to validate this system using large-scale experimental testing, and to train highly qualified personnel in reinforced masonry design and risk mitigation. This grant will support a partnership between McMaster University, the Canadian Concrete Masonry Producers Association (CCMPA), and the Canada Masonry Design Centre (CMDC), to develop practice-oriented methods for improving public safety and community resilience, while simultaneously enhancing the competitiveness of masonry within the Canadian construction industry.

大地震确实有可能成为加拿大历史上损失最惨重的灾难，建筑业主越来越期待能够减轻这种风险的解决方案。与此同时，目前用钢筋砌体抵抗地震荷载的方法不仅需要大量的劳动力成本，而且还限制了钢筋砌体作为一种有竞争力的建筑解决方案的结构高度范围。受控摇摆有望解决所有这些问题。在受控摇摆系统中，允许结构的选定部分响应地震荷载从地基上隆起，并且使用补充能量耗散和/或后张拉来控制这种摇摆行为。该研究项目旨在开发一种新的受控摇摆系统。摇动砌体系统的设计考虑了地震荷载下的可施工性和弹性，通过大规模实验测试验证该系统，并培训高素质的配筋砌体设计和风险缓解人员。这笔赠款将支持麦克马斯特大学、加拿大混凝土砌体生产商协会 (CCMPA) 和加拿大砌体设计中心 (CMDC) 之间的合作伙伴关系，开发以实践为导向的方法，以提高公共安全和社区复原力，同时提高社区的竞争力加拿大建筑行业内的砖石工程。