Instability in Multistory Buildings Subjected to Earthquake

多层建筑在地震中的不稳定

• 批准号: 9024720
• 负责人: Dionisio Bernal
• 金额: $ 5.96万
• 依托单位: Northeastern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-04-01 至 1992-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9024720&HistoricalAwards=false
• 关键词: Instability; Multistory; Buildings; Subjected; Earthquake

The prevention of structural collapse during an earthquake having a major intensity at a site is a well recognized objective of seismic design. This project addresses the importance in attaining this objective by ensuring that buildings will not fail while undergoing inelastic response. This research is part of an effort which seeks to provide a practical and reliable methods to check the safety of a building against inelastic dynamic instability. The specific objectives of the research are: a) To investigate the means of identifying the kinematic mechanism that will control a building's dynamic response to sufficiently strong ground motions. b) To calculate instability limits for a number of representative buildings and ground motions using accurate mathematical models. c) To examine the matter of inelastic dynamic instability in the context of code-based seismic design and develop recommended guidelines for design. The development of a method to check instability which accounts for the inelastic dynamic nature of the problem is currently recognized as one of the priority needs for improving seismic design performance standards. This research will lead to a better understanding of how to prevent single story and other undesirable collapse mechanisms.

施工期间结构倒塌的预防 一次主要烈度为 网站是公认的目标， 抗震设计 该项目解决了 实现这一目标的重要性 确保建筑物不会倒塌， 经历非弹性反应。 本研究 是一项努力的一部分， 实用可靠的方法来检查 建筑物的非弹性安全 动态不稳定性 研究的具体目标是： （a）调查查明 运动机制，将控制一个 建筑物的动态响应 强烈的地面运动B）计算 不稳定性限制， 典型建筑物和地面运动 使用精确的数学模型。（c） 研究非弹性动力学问题 基于代码的环境中的不稳定性 抗震设计与开发建议 设计指南。 开发一种方法来检查 不稳定性， 问题的动态性质目前 被认为是优先需要之一， 提高抗震设计性能 标准 这项研究将导致 更好地了解如何防止单身 故事和其他不希望的崩溃 机制等