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

建议：CMS-0530756PI：Deierlein，GregoryInstitution：Stanford University标题：NEESR SG：带可更换消能保险丝的钢框架建筑的受控摇摆研究和过去地震的经验表明，需要在大地震后不太容易损坏和更容易修复的建筑。特别值得关注的是某些传统体系，如中心支撑钢框架建筑，这些体系相当普遍，其设计可能依赖于比体系所能提供的更多的非弹性能量耗散。这项拟议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，以提供安全和经济有效的抗震能力。该系统结合了传统钢支撑框架的可取之处和两个替代和互补的保险丝概念-剪切板保险丝和轴向柱保险丝。熔断器采用新型材料和部件，包括高性能纤维增强水泥复合剪切板熔断器、低屈服钢剪切板熔断器和防屈曲轴向柱熔断器的组合。在基于性能的容量设计原则的指导下，保险丝易于更换，并可进行调整以提供最佳性能。通过计算和实验研究相结合的方案，该项目将通过直接评估生命安全和生命周期经济因素的基于性能的设计方法，涵盖部件和完整的系统响应以及结果的综合。建议的概念强调对基础和其他难以修复的结构构件进行破坏预防；在易于更换的结构保险丝中进行非弹性能量耗散；控制楼层漂移，以减少非结构破坏；以及足够的倒塌安全。这项研究将包括在伊利诺伊大学香槟分校NEES设施的大型车架组件的准静态测试，以及在日本三木市E-Defense振动台的大型车架的动态测试。外联活动将侧重于一个项目网站、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.