Performance of Water Lifeline Systems During the Whittier Narrows Earthquake of October 1, 1987.

这项研究计划的目的是提高地震灾害 通过1987年10月1日获得的信息缓解 惠蒂尔海峡（加州）地震，特别是在该地区 生命线研究 惠蒂尔海峡地震对水造成了广泛的破坏 分配管道。 地震的理论模拟 诱导损伤一直在积极追求，理论模型是 基于不太清楚的损坏机制， 与地震诱发的直接观测有关的数据很少， 损害 需要这些数据来验证这些模型，以便它们能够 在推导抗震设计标准时应放心使用。 目前 没有关于埋地管道的规范。 因此，本项目涉及彻底的实地调查和分析 加州惠蒂尔附近的水生命线系统受到破坏。 在 此外，将现有模型的预测与 观察到的行为，模型正在根据这一点进行修改 从观察中得出的比较和理解。 最后，正在从模型中得出有效的建议， 新管道设计和改造的意见 现有的系统。

The objective of this research program is to advance earthquake hazard mitigation through information obtained from the October 1, 1987 Whittier Narrows (California) earthquake, specifically in the area of lifeline research. The Whittier Narrows earthquake caused extensive damage to water distribution pipelines. While theoretical modeling of earthquake induced damage has been actively pursued, the theoretical models are based upon damage mechanisms that are not well understood, and there is very little data related to the direct observation of earthquake induced damage. Such data is needed to validate these models, so that they can be used with confidence in deriving seismic design criteria. At present there is no code for buried pipelines. Thus, this project involves a thorough field investigation and analysis of the damage to water lifeline systems around Whittier, California. In addition, the predictions of the existing models are being compared with the observed behavior, and the models are being modified based on this comparison and the understanding derived from the observations. Finally, effective recommendations are being derived from the models and the observations for the design of new pipelines, and the retrofitting of existing systems.