Retrofit strategies for Existing STructures against prOgRessive collapsE (RESTORE)

人为极端事件(如恐怖袭击、冲击、爆炸和火灾)会对结构造成局部损伤，这种损伤可能会从一个单元扩展到另一个单元，导致整个结构或结构的很大一部分倒塌，即渐进性倒塌。就人员伤亡、经济损失和社会影响而言，这些都是最严重的事件，如2021年尚普兰大厦逐渐部分倒塌等几个案例所证明的那样。修复项目提出了一个创新的框架，以评估受人为灾害影响的现有钢铁和钢筋混凝土(RC)建筑的渐进倒塌风险，并设计增强耐久性和弹性的解决方案。该项目调查创新的改造解决方案，包括全球和地方干预措施的组合，旨在权衡这两种战略的利弊，从而能够针对多种危险采取有效的改造干预措施。它们将：-确保结构冗余，减少针对多种危害的渐进倒塌风险(稳健性)-提供拆除和重建战略的替代方案，允许重复使用现有结构和减少对环境的影响(可持续性和低二氧化碳排放)-在安装期间对建筑物的正常功能具有低侵入性(低业务中断)-将极端事件下倒塌的可能性降至最低(保护人类生命)-经历可快速修复的最小损害(战略建筑的高弹性)-为主办机构(伦敦大学学院)的年轻研究人员提供卓越的研究设施和课程(世界排名前十的大学之一)、主管的专业知识、学术合作伙伴和知名产业合作伙伴(ARUP)的参与保证了高科学价值、项目的完成和在实践中利用所取得的成果。

Man-made extreme events (i.e., terrorist attacks, impacts, explosions, and fires) can cause local damage to structures which may spread from element to element leading to the collapse of the entire structure or a large part of it, i.e., progressive collapse. These are among the most severe events in terms of casualties, economic losses, and societal impact, as has been made evident by several cases, e.g., the progressive partial collapse of the Champlain Towers in 2021. The RESTORE project proposes an innovative framework to assess the progressive collapse risk of existing Steel and Reinforced Concrete (RC) buildings subjected to man-made hazards and design robustness- and resilience-enhancing solutions. The project investigates innovative retrofit solutions, including combinations of global and local interventions, aiming for a trade-off between benefits and drawbacks of both strategies, thus enabling effective retrofit interventions against multiple hazards. They will:- ensure structural redundancy, mitigating progressive collapse risk against multiple-hazards (robustness)- provide an alternative to the demolish-and-rebuild strategy, allowing for the re-use of existing structures and the reduction of environmental impact (sustainability and low CO2 emissions)- have low invasiveness on the ordinary functions of the building during the installation (low business interruption)- minimise the probability of collapse under extreme events (protection of human life)- experience minimal damage that can be rapidly repaired (high resilience for strategic buildings)The excellence of the research facilities and courses for young researchers of the host institution (UCL, ranked among the world's top 10 universities), the Supervisor's expertise, and the involvement in the project of academic partners and of a high-profile industrial collaborator (ARUP) guarantee a high scientific value, the completion of the project and the exploitation of the achieved results in practice.