A New Method for Response Spectrum Superposition

响应谱叠加的新方法

• 批准号: 8705398
• 负责人: Mihailo Trifunac
• 金额: $ 3万
• 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: 1987
• 资助国家: 美国
• 起止时间: 1987-03-15 至 1988-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8705398&HistoricalAwards=false
• 关键词: New; Method; Response; Spectrum; Superposition

This project is undertaken under provisions in AD/ENG Bulletin No. 85- 25 for "Expedited Awards for Novel Research." The primary objective of the research is to complete the final development of a statistical response spectrum method for multi-degree of freedom systems. Currently, such problems can only be handled using approximations. The new method to be developed is powerful, accurate, and has a round theoretical basis following the work by Cartwright and Longuet-Higgins. The need to estimate the maximum response of multi-degree-of-freedom structures is evident as many spectrum estimation or superposition methods have been proposed. However, very few of them are established on sound physical basis and utilizing statistical theory which can account for the uncertainties in the results they produce. The proposed method is capable of evaluating the expected and most probable amplitude of local response peaks for each floor of a multi-story building. Computer runs will be made to test the numerical accuracy before the method can be fully documented, published, and introduced into practical applications. The work proposed would produce a method far superior to any of the existing methods. The expedited award mechanism is used to enable a uniquely qualified graduate student to complete the work while available. The Principal Investigator is one of the leaders in structural dynamics and ground motions. He has pioneered many important subjects in these areas. A one-year grant is strongly supported.

本项目是根据AD/ENG公告第85号的规定进行的， 第25届“小说研究加速奖”。" 研究的主要目标是完成最终的 多自由度统计反应谱方法的发展 自由系统。 目前，此类问题只能使用 近似值 即将开发的新方法功能强大，准确， 它继承了卡特赖特的著作， 朗盖特-希金斯 需要估计多自由度的最大响应 结构是显而易见的，因为许多谱估计或叠加 方法已经提出。 然而，其中很少有人建立 在坚实的物理基础上，利用统计理论， 考虑到它们产生的结果中的不确定性。 拟议 方法能够评估预期和最可能的振幅 多层建筑每层的局部响应峰值。 在开始前，将进行计算机运行以测试数字的准确性。 方法可以充分记录，发布，并引入实践 应用. 所提出的工作将产生一种远远优于任何一种方法的上级方法。 现有的方法。 快速奖励机制是用来使一个 唯一合格的研究生完成工作，而 available. 首席研究员是结构动力学的领导者之一 和地面运动 他在这些领域开创了许多重要课题 地区 为期一年的补助金得到大力支持。