RAPID: NEES/E-Defense Collaboration for Design of E-Defense Smart Base Isolation Experiments

RAPID：NEES/E-Defense 合作设计 E-Defense 智能基地隔离实验

• 批准号: 1133023
• 负责人: Erik Johnson
• 金额: $ 6.76万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-06-01 至 2014-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1133023&HistoricalAwards=false
• 关键词: RAPID; NEES; Defense; Collaboration; Design

This award enables U.S. and Japanese researchers to collaborate on the design of smart base isolation experiments to be conducted using Japan's Earth Defense (E-Defense) shake table facility in Miki, Japan. This effort is time sensitive as Japan's National Research Institute for Earth Science and Disaster Prevention has recently committed the resources for these experiments, with high-level conceptual design to be completed during April through June 2011, followed with analysis and simulations completed by August 2011. Further design and detailing will occur next fall and winter, construction in 2012, and testing in late 2012 or early 2013. Japanese/E-Defense researchers plan to test the seismic performance of a three-to-four story, three-dimensional asymmetric reinforced concrete superstructure that incorporates different smart base isolation systems. In addition to linear rubber bearings in the isolation layer, tests will incorporate semi-active controllable damping devices to explore their potential for improving seismic performance over a wider array of ground motions than is possible with conventional isolation (fixed systems), as well as consider other types of devices that U.S. researchers may propose. This bilateral collaboration brings together expertise in controlled base isolation and semi-active devices, as well as experimental design and execution, so that both countries can maximize benefits from the experiments. The impetus for the experiments and the opportunities for this international collaboration were fostered in joint NEES/E-Defense planning meetings in 2009, 2010 and 2011 and is the outcome of the joint NEES/E-Defense Isolation and Control Working Group. This award supports several U.S. researchers to travel to Japan to work directly with E-Defense researchers on the design of the smart base isolation experiments, including superstructure, isolation system strategies, instrumentation, and post-test analyses. This award also supports the necessary design analyses and simulations to make experimental design decisions.The planned E-Defense experiments of a base isolated structure with semi-active controllable damping devices are unique and provide a one-time opportunity for U.S. researchers to participate in full-scale experiments that currently cannot be conducted in the U.S. These E-Defense experiments will enable researchers to investigate and calibrate the level of seismic performance achievable with controllable dampers by extending isolation effectiveness to a much broader array of ground motions than possible with current conventional isolation technology. The tests will be the first laboratory experiments of magnetorheological fluid dampers at this scale for base isolation. This award will foster new research collaboration between NEES and E-Defense, as well as build new ties between U.S. and Japanese researchers. The experimental designs and resulting data will be disseminated to the research community via an already-established NEEShub group (http://nees.org/groups/isolationcontrol).

该奖项使美国和日本的研究人员能够使用日本米基的日本地球防御（E防御）摇桌设施进行智能基础隔离实验的设计。这项努力很敏感，因为日本国家地球科学与灾难预防研究所最近为这些实验提供了资源，并在2011年4月至2011年6月期间完成了高级概念设计，然后在2011年8月完成分析和模拟。在2012年秋季和冬季进行进一步的设计和详细信息。2012年秋末和冬季进行了2013年底或测试，以表现出三种效果。不对称钢筋混凝土上层建筑，结合了不同的智能基础隔离系统。 除了在隔离层中的线性橡胶轴承外，测试还将结合半活性的可控制阻尼装置，以探索其在地面运动范围内改善地震性能的潜力，而不是常规隔离（固定系统），以及考虑美国研究人员可能提出的其他类型的设备。 这种双边合作汇集了在受控的基础隔离和半活动设备以及实验设计和执行方面的专业知识，因此两国都可以从实验中获得最大收益。在2009年，2010年和2011年的联合/电子防御计划会议上促进了实验的动力和这项国际合作的机会，这是联合NEES/EDES/EDEFESS隔离和控制工作组的结果。 该奖项支持几位美国研究人员前往日本直接与电子防御研究人员合作，讨论智能基础隔离实验的设计，包括上层建筑，隔离系统策略，仪器和测试后分析。该奖项还支持必要的设计分析和模拟以做出实验设计决策。具有半活动的可控制阻尼设备的基础隔离结构的计划电子防御实验是独一无二的，并为美国研究人员提供了一次性的机会，让美国研究人员参与目前无法在美国进行的全面实验来实现这些级别的级别的级别，以实现这些级别的级别，并调查级别的级别级别的确定级别的级别，并将其调查级别。使用当前的常规隔离技术将隔离有效性扩展到更广泛的地面运动。这些测试将是在此规模上进行磁性流体阻尼器的第一个实验室实验，以进行基础分离。 该奖项将促进NEES和EDEDENSE之间的新研究合作，并在美国和日本研究人员之间建立新的联系。 实验设计和结果数据将通过已经建立的Neeshub组（http://nees.org/groups/isolationcontrol）传播到研究界。