Resilient and sustainable steel frame with innovative post-tensioned connections and rate-dependent passive dampers for multi-hazard resistant design

该项目将研究一种钢框架，该框架具有创新的后张梁柱连接和率相关（弹性体或流体）被动阻尼器，用于多灾抗设计。总体研究目标是：a）降低建造成本，现场快速组装，简单的拆除，适应性和结构构件的再利用潜力; B）增强连续倒塌的抵抗力和可修复性，以防止模拟炸弹爆炸或重型车辆碰撞的柱突然损失（恐怖袭击）;和c）易于检查/维修，允许在强（设计）地震后几乎立即恢复服务，以及在非常强的地震下增加生命安全。（最大可信度）地震。该项目将通过进行综合设计、分析和实验研究，为拟议的钢框架开发基础知识、设计细节和设计方法。具体而言，该项目将：a）为创新的后张连接制定设计细节和标准; B）通过分别模拟柱损失情况和地震荷载的大规模单调和循环试验，对后张连接的行为进行实验性评估; c）评估拟议钢框架的抗震性能和抗连续倒塌能力; d）根据欧洲抗震设计标准-欧洲规范8，为拟建钢框架制定实用抗震设计程序;以及e）比较建造建议的钢框架和传统的钢抗弯框架的成本和可持续性。该项目将超越最小化领域的最新技术，该计划旨在保护建筑物的结构系统;显著提高英国在结构工程方面的竞争力;满足与可持续性和弹性相关的重要国家优先事项;并与EPSRC的全球，经济和社会挑战主题保持一致。

This project will investigate a steel moment-resisting frame with innovative post-tensioned beam-column connections and rate-dependent (elastomeric or fluid) passive dampers for multi-hazard resistant design. The overall research objectives are: a) decrease in the construction cost, rapid assembly on-site, simple deconstruction, adaptability, and potential for reuse of structural members; b) enhanced progressive collapse resistance and reparability against a sudden loss of column simulating bomb blast or heavy vehicle collision (terrorist attacks); and c) easy inspection/repair allowing almost immediate return to service after a strong (design) earthquake as well as increased life safety under a very strong (maximum credible) earthquake. The project will develop fundamental knowledge, design details, and design methods for the proposed steel frame by conducting integrated design, analysis and experimental research. In particular, the project will: a) develop design details and criteria for an innovative post-tensioned connection; b) experimentally evaluate the behaviour of the post-tensioned connection with large-scale monotonic and cyclic tests simulating a loss of column scenario and seismic loading, respectively; c) evaluate the seismic performance and the progressive collapse resistance of the proposed steel frame; d) develop a practical seismic design procedure for the proposed steel frame in the context of the European seismic design standard-Eurocode 8; and e) compare the costs and sustainability aspects of constructing the proposed steel frame and a conventional steel moment-resisting frame.The project will go beyond the state-of-the-art in the field of minimal-damage structural systems; significantly improve the UK's competitiveness in structural engineering; meet important national priorities related to sustainability and resilience; and align with EPSRC's global, economic and societal challenge themes.