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: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=719323
• 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.

主要地震是加拿大历史上最昂贵的灾难，建筑所有者越来越期望可以减轻这种风险的解决方案。同时，当前抵抗用钢筋砌体的地震载荷的方法不仅与劳动力成本相关，而且还限制了加固砌体是一种有竞争力的建筑解决方案的结构高度的范围。控制的摇摆显示了解决所有这些问题的希望。在受控的摇摆系统中，允许结构的选定部分以响应地震载荷从基础上提升，并且这种摇摆行为是使用补充能量耗散和/或张紧后控制的。该研究项目旨在开发一个新的受控的受控的。摇摆砌体系统是为地震加载下的可建造性和弹性而设计的，可以使用大规模的实验测试来验证该系统，并在钢筋砌体设计和减轻风险的情况下培训高素质的人员。该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）与加拿大砌体设计中心（CMDC）之间的合作伙伴关系，以开发以实践为导向的方法，以改善公共安全和社区弹性，同时增强增强的竞争力。加拿大建筑业内的砌体。