Collaborative Research: Investigation of Site Effects, Seismic Compression, and Liquefaction in the June 23, 2001, Southern Peru Earthquake

摘要0201574，Adrian Rodriguez-Marek，华盛顿州立大学“合作研究：2001年6月23日南秘鲁地震的场地效应、地震压缩和液化调查“在过去的25年中，世界范围内最大的地震事件是2001年6月23日南秘鲁地震（Mw = 8.4）。 它破坏了莫克瓜、塔克纳、阿雷基帕、卡马纳和伊洛等城市及其周围地区。 美国和秘鲁研究人员组成的一个合作小组在事件发生后不久对该地区进行了地质技术勘察。 主要发现包括：（i）建筑物损毁集中于某些地区，显示损毁程度受地点影响，并可能受地形放大影响; ㈡由于地震压缩、液化、山崩，大型地震事件，如南秘鲁地震，提供了一个机会，以提高国家的岩土地震通过开发和研究详细的案例历史来进行工程实践。 这些案例研究对于校准现有的设计程序和抗震规范是非常宝贵的，它们通常可以作为开发新的，更可靠的分析程序的跳板。 华盛顿州立大学和德雷克塞尔大学合作研究的目的是：（1）记录和研究塔克纳和莫克瓜城市的场地放大和地形效应;（2）开发和分析压实填土地震压缩的案例历史;（3）收集和评估液化和相关横向扩展的案例历史。 这项研究计划利用了研究人员目前与秘鲁天主教大学的工作关系，以及他们与当地政府官员、工程学会和工业界的联系。 这项研究涉及几项任务：（a）发展有代表性的地面运动，（B）通过测试钻孔、剪切波速度测量和实验室实验确定地下条件的特征，（c）汇编和发展详细的案例历史，（d）分析案例历史，以及（e）及时传播数据和调查结果。 案例历史和相关数据将在一个专门的互联网网站上免费提供，该网站将以英语和西班牙语开发，以便美国和国外的个人都可以访问，这项研究将为该行业提供一系列案例研究，可用于校准或验证现有的设计和分析程序。 它还将帮助制定新的或更新的分析程序和建筑设计规范和抗震指南。 这些发现将对全球地震安全界产生影响，特别是对太平洋西北部和阿拉斯加等地区，那里的地震危险受到俯冲事件的控制。

Abstract0201574, Adrian Rodriguez-Marek, Washington State University"Collaborative Research: Investigation of Site Effects, Seismic Compression, and Liquefaction in the June 23, 2001 Southern Peru Earthquake"During the past 25 years, the largest seismic event worldwide was the Southern Peru Earthquake of June 23, 2001 (Mw = 8.4). It damaged regions in and around the cities of Moquegua, Tacna, Arequipa, Camana, and Ilo. A collaborative team of United States and Peruvian researchers conducted a geotechnical reconnaissance of the region shortly after the event. Among the key finding were: (i) the concentration of structural damage in some areas suggested the influence of site and possibly topographic amplification in the resulting damage levels; (ii) considerable damage occurred to roadways and bridges in the affected regions as a result of seismic compression, liquefaction, landslides, and rockfalls.Large magnitude seismic events such as the Southern Peru Earthquake provide an opportunity to advance the state of geotechnical earthquake engineering practice through the development and study of detailed case histories. These case studies are invaluable for calibration of existing design procedures and seismic codes, and they often serve as a springboard for developing new, more reliable analysis procedures. The objective of this collaborative research between Washington State University and Drexel University is to: (1) document and study site amplification and topographic effects in the cities of Tacna and Moquegua; (2) develop and analyze case histories of seismic compression of compacted fills; and (3) assemble and evaluate case histories of liquefaction and associated lateral spreading. The research plan takes advantage of the investigators' current working relationship with the Catholic University of Peru, and from their contacts with local officials from government, engineering societies, and industry. The research involves several tasks: (a) development of representative ground motions, (b) characterization of subsurface conditions by test borings, shear wave velocity measurements, and laboratory experiments, (c) compilation and development of detailed case histories, (d) analysis of the case histories, and (e) timely dissemination of the data and findings. The case histories and associated data will be freely available on a dedicated Internet site, which will be developed in both English and Spanish to make it accessible to individuals in both the Unites States and abroad.This research will provide the profession with a series of case studies that may be used for calibration or validation of existing design and analysis procedures. It will also aid the development of new or updated analysis procedures and building design codes and seismic guidelines. The findings will have implications for the seismic safety community worldwide, and will be particularly relevant to regions such as the Pacific Northwest and Alaska, where the seismic hazard is controlled by subduction events.