Drift Response of Reinforced Concrete Flat-Plate Structures During Loma Prieta Earthquake

洛马普列塔地震期间钢筋混凝土平板结构的位移响应

• 批准号: 9003563
• 负责人: Ahmad Durrani
• 金额: --
• 依托单位: William Marsh Rice University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-03-15 至 1992-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9003563&HistoricalAwards=false
• 关键词: Drift; Response; Reinforced; Concrete; Flat

This is a post Loma Prieta earthquake (Oct. 1989) investigation project in learning from this damaging event. The objective of this project is to utilize the strong- motion records to validate and improve the current analytical methods for predicting the drift response of flat-plate buildings. It has been demonstrated repeatedly that discrepancies exist between the analytically predicted response and the actual response of flat-plate buildings. Because of their inherent flexibility, the survivability of flat- plate buildings very much depends upon controlled drift. A realistic estimate of lateral drift is therefore essential for a safe design. A number of flat-plate and flat-slab buildings, ranging in height from six to twenty stories, have yielded over twenty seconds of strong-motion data. Records from a selected number of these buildings will be collected for evaluation of drift response. Each building will be analyzed for lateral drift using the code defined lateral forces and the currently accepted analytical models. The analyses will then be repeated for time-history response using the ground motion recorded at the base of the buildings. By comparing the predicted and the measured response and using the system identification techniques, the reliability of the existing models for predicting the drift response of flat-plate buildings for an earthquake type of loading could be improved.

这是1989年10月洛马普列塔地震后的一次地震。 调查项目在学习这一破坏性的 活动 该项目的目标是利用强大的- 运动记录，以验证和改善目前的 预测漂移响应的分析方法 平板建筑 事实一再表明， 存在于分析预测的响应和 平板建筑物的实际反应。 因为 他们固有的灵活性，平面的生存能力， 板块建筑物很大程度上取决于可控漂移。 因此，横向漂移的实际估计值为 对于安全设计至关重要。 一些平板和平板建筑， 从六层到二十层的高度，已经屈服了 20秒的强震数据 中的记录 政府将收集其中选定数目的楼宇， 漂移响应的评估。 每栋建筑都将 使用规范定义的横向 力和目前公认的分析模型。 的 然后将对时程响应进行重复分析 使用在基地记录的地面运动， 建筑 通过比较预测和测量的响应， 使用系统识别技术， 现有模型预测的可靠性 地震作用下平板建筑物的位移反应 可以改进装载方式。