NEESR-SG: Controlled Rocking of Steel-Framed Buildings with Replaceable Energy Dissipating Fuses

提案：ms -0530756 pi: Deierlein， gregory机构：Stanford university标题：NEESR SG：采用可更换耗能保险丝的钢结构建筑的可控晃动摘要：过去地震的研究和经验表明，需要在大地震后不易受损且易于修复的建筑。特别值得关注的是某些传统系统，例如同心支撑钢框架建筑，它们非常普遍，其设计可能依赖于比系统所能提供的更多的非弹性能量耗散。提出的研究旨在开发一种新的结构系统，该系统采用摇摆作用和可更换的结构保险丝来提供安全和经济有效的抗震能力。该系统将传统钢支撑框架的理想方面与两种替代和互补的保险丝概念-剪切面板保险丝和轴向柱保险丝结合在一起。该保险丝采用了新型材料和部件，包括高性能纤维增强胶凝复合剪切板保险丝、低屈服钢剪切板保险丝和抗屈曲轴向柱保险丝的组合。在基于性能的容量设计原则的指导下，保险丝易于更换，并且可以调整以提供最佳性能。通过计算和实验研究相结合的方案，该项目将包括组件和完整的系统响应，并通过基于性能的设计方法综合结果，直接评估生命安全和生命周期经济因素。拟议的概念强调对难以修复的基础和其他结构构件的损害预防；易更换结构引信的非弹性能量耗散层间漂移控制，减少非结构损伤；以及足够的防倒塌安全性。该研究将包括在伊利诺伊大学厄巴纳-香槟分校的NEES设施对大型框架组件进行准静态测试，以及在日本三木市的E-Defense振动台上对大型框架进行动态测试。外展活动将集中在项目网站、基于网络的远程呈现以及本科生和研究生研究人员的参与。

Proposal: CMS-0530756PI: Deierlein, GregoryInstitution: Stanford UniversityTitle: NEESR SG: Controlled Rocking of Steel-Framed Buildings with Replaceable Energy Dissipating Fuses Abstract Research and experience from past earthquakes suggest the need for buildings that are less vulnerable to damage and easier to repair after a major earthquake. Of particular concern are certain conventional systems, such as concentrically braced steel frame buildings, which are quite prevalent and whose design may rely on more inelastic energy dissipation than the systems can provide. The proposed research aims to develop a new structural system that employs rocking action and replaceable structural fuses to provide safe and cost effective resistance to earthquakes. The system combines desirable aspects of conventional steel-braced framing with two alternative and complementary fuse concepts - shear panel fuses and axial column fuses. The fuses utilize novel materials and components, including combinations of high-performance fiber reinforced cementitious composite shear panels fuses, low-yield steel shear panel fuses, and buckling-restrained axial column fuses. Guided by performance-based capacity design principles, the fuses are easily replaceable and can be tuned to provide optimal performance. Through a combined program of computational and experimental research, the project will encompass component and complete system response and synthesis of the results through a methodology for performance-based design that directly assesses life safety and life-cycle economic factors. The proposed concept emphasizes damage prevention to foundations and other structural elements that are difficult to repair; inelastic energy dissipation in structural fuses that are easy to replace; story drift control so that nonstructural damage is reduced; and sufficient safety against collapse. The research will involve quasi-static testing of a large-scale frame subassembly at the NEES facility at the University of Illinois at Urbana-Champaign and dynamic testing of a large-scale frame at the E-Defense shake table in Miki City, Japan. Outreach activities will focus on a project web site, web-based telepresence, and participation of undergraduate and graduate researchers.