Active Isolation for Critical Structural Systems

关键结构系统的主动隔离

• 批准号: 8703586
• 负责人: James Kelly
• 金额: $ 23.06万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-03-15 至 1992-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8703586&HistoricalAwards=false
• 关键词: Active; Isolation; Critical; Structural; Systems

Base isolation is an attractive strategy for reducing the effects of earthquakes in certain structures and siting situations. The strategy is being implemented around the world and in the United States. This research project considers the feasibility of using a combination of active control and base isolation for the seismic protection of critical structures. Base isolation allows the structure to be uncoupled at the base from the ground motion. When active control is added it should be possible to minimize the absolute accelerations of the structure thus greatly reducing the accelerations and forces experiences by sensitive internal equipment or fragile contents. The research is both practical and experimental. Shake table studies of the combined active control-base isolation methodology are to be carried out using a large scale structural model. The shake table tests are very important in establishing that the theoretical results can be translated into hardware and shows the limits of applicability of the technique.

基础隔离是在某些结构和选址情况下减少地震影响的一种有吸引力的策略。 该战略正在世界各地和美国实施。 该研究项目考虑了采用主动控制和基础隔震相结合的方式对关键结构进行地震防护的可行性。 基座隔离允许结构在基座处与地面运动分离。 当添加主动控制时，应该可以最小化结构的绝对加速度，从而大大减少敏感内部设备或易碎内容物所经历的加速度和力。 该研究既实用又实验。 主动控制-基础隔离组合方法的振动台研究将使用大型结构模型进行。 振动台测试对于确定理论结果可以转化为硬件并显示该技术的适用性限制非常重要。