Novel and Emerging Technologies for Sustainable and Seismically Resilient Infrastructure

可持续和抗震基础设施的新技术和新兴技术

• 批准号: RGPIN-2020-05034
• 负责人: Alam, Shahria
• 金额: $ 3.13万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 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=761637
• 关键词: Novel; Emerging; Technologies; Sustainable; Seismically

A major portion of Canadian civil infrastructure has passed its service life. Our infrastructure deficit is increasing at $2B/year. The Insurance Bureau of Canada 2013 report estimated the probable loss after a 9-magnitude earthquake in BC at $75B and a $61B after a 7-magnitude earthquake in the Quebec City-Montreal-Ottawa corridor - a clear reflection of our vulnerable infrastructure. Hence, it is imperative to take immediate measures to develop innovative, low-cost, and reliable construction and retrofit solutions for our infrastructure. The proposed research program aims to reduce seismic vulnerability through innovations in structural systems and transfer of knowledge to practice. Although conventional structural design can save lives during earthquakes, the infrastructure suffers major damage and often requires replacement which negatively impacts sustainability. Hence, it is absolutely critical to bring innovation to structural design so that our infrastructure is not compromised during earthquakes. The proposed program objectives will enable leading-edge research to develop (a) innovative low-cost segmental post-tensioned structural systems having self-centering capability to reduce the risk of major damage following an earthquake; (b) novel friction-based self-centering bracing device to substantially reduce potential damage and improve the service life of new and deficient infrastructure; and (c) innovative isolation and damping devices for seismic protection of structures. In current construction practice, buildings and bridges are designed such that they will dissipate seismic energy by undergoing large lateral drift and yielding of critical components causing substantial damage during a major earthquake. In most cases, the structures are not repairable, resulting in significant economic loss. The rebuilding is also economically and environmentally costly and time-consuming. The proposed research will address this critical need by developing innovative construction techniques using vertically post-tensioned prefabricated elements and connection details, and novel retrofitting techniques for older structures. Besides, superelastic shape memory alloy (SMA) in the form of rebar, strand and cable will be utilized along with regular steel for developing self-centering devices that can help the structure bring back to its plumb position after earthquakes. This research program is well aligned with the global demand in innovative systems, technologies, and processes, and entrepreneurship, and finally, sustainable development. This research program will provide excellent opportunities to train multiple highly qualified personnel made up of a diversified group at UBC who will constitute the next generation of Canada's high-tech engineering workforce.

加拿大民用基础设施的主要部分已经过了其服务寿命。我们的基础设施赤字为$ 2B/年增加。加拿大保险局2013年的报告估计，在卑诗省发生9级地震后，可能的损失为75B美元，在魁北克市 - 蒙特利尔 - 奥塔瓦瓦走廊发生7级地震后，可能损失了61B美元 - 清楚地反映了我们脆弱的基础设施。因此，必须立即采取措施为我们的基础设施开发创新，低成本和可靠的结构和改造解决方案。拟议的研究计划旨在通过结构系统中的创新和知识转移到实践来减少地震脆弱性。尽管传统的结构设计可以在地震期间挽救生命，但基础设施遭受重大损害，并且通常需要更换，从而对可持续性产生负面影响。因此，将创新带入结构设计绝对至关重要，以使我们的基础设施在地震期间不会受到损害。拟议的计划目标将使领先的研究能够开发（a）具有自我核心能力的创新的低成本分段后的结构系统，以降低地震后重大损害的风险； （b）基于摩擦的新型自我核心支撑装置，可大大降低潜在的损害并改善新基础设施的使用寿命； （c）创新的隔离和阻尼装置，用于对结构的地震保护。在当前的施工实践中，设计建筑物和桥梁，使它们通过大量横向漂移和近距离屈服的屈服来消散地震能量。在大多数情况下，这些结构无法修复，从而导致巨大的经济损失。重建在经济和环境上也是昂贵且耗时的。拟议的研究将通过使用垂直张贴的预制元素和连接细节以及针对较旧结构的新型改造技术来开发创新的施工技术来解决这一关键需求。此外，将使用钢筋，链和电缆形式的超弹性形状合金（SMA）与常规钢一起使用，用于开发自我居中的设备，这些设备可以帮助结构在地震后将其带回其垂直位置。该研究计划与创新系统，技术，流程以及企业家精神的全球需求非常一致，最后是可持续发展。该研究计划将为培训由UBC多元化群体组成的多个高素质人员培训多个高素质的人员，该组织将构成加拿大下一代高科技工程劳动力。