Controlled rocking reinforced masonry systems for enhanced resilience under seismic risk

大地震确实有可能成为加拿大历史上最昂贵的灾难，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，目前用增强砌体来抵抗地震荷载的方法不仅与巨大的劳动力成本有关，而且还限制了结构高度的范围，而增强砌体是一种有竞争力的建筑解决方案。可控摇摆有望解决所有这些问题。在可控摇摆系统中，结构的选定部分被允许在地震荷载下从基础上隆起，这种摇摆行为是通过补充能量耗散和/或后张拉来控制的。本研究项目旨在开发一种既能在地震荷载下施工又能在地震荷载下恢复的可控摇摆砌体系统，并通过大规模的实验测试来验证该系统，同时培养在加固砌体设计和风险降低方面的高素质人才。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，以开发以实践为导向的方法，改善公共安全和社区恢复力，同时提高加拿大建筑行业砌体的竞争力。

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.