An Investigation of the Geotechnical Aspects of the June 1999 Central Mexico Earthquakes - Preliminary Assessment

1999 年 6 月墨西哥中部地震的岩土工程方面的调查 - 初步评估

• 批准号: 9985983
• 负责人: Jonathan Bray
• 金额: $ 1.21万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-03-01 至 2001-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9985983&HistoricalAwards=false
• 关键词: Investigation; Geotechnical; Aspects; June; 1999

Abstract9985983The central region of Mexico experienced strong earthquakes on 15 June (Moment magnitude 7.0) and 21 June 1999 (M = 6.3). The first earthquake resulted in 15 fatalities. There were no deaths resulting from the second earthquake; however thousands of buildings were damaged, some severely. The most notable effects occurred in unreinforced masonry (URM) structures, such as churches and small adobe and cane houses. Site effects were possibly important in some of the cases. A number of strong motion instruments recorded the ground motions in the affected area.A research team of graduate students and faculty from the University of California at Berkeley (UC ) and the National Autonomous University of Mexico (UNAM), made a post-earthquake preliminary field investigation of seismic geotechnical issues, sponsored by the Pacific Earthquake Engineering Research Center (PEER).This action is to support the publication of a report on the key geotechnical aspects of these earthquakes. This report is being made available in hard copy and via the World Wide Web, in order to disseminate the key lessons learned.This action follows similar work that was supported following the 1985 Mexico earthquake, and is complementary to the support being provided to assist in the maintenance and distribution of data from the Guerrero strong motion array along the west coast of Mexico. As with all post-earthquake reconnaissance investigations, it is expected that vital records and data will become available as a result of these recent earthquakes in Mexico. From a scientific viewpoint, these large earthquakes act as full scale experiments that cannot be duplicated via controlled experiments in the laboratory or in the field. It is through quick response reconnaissance efforts that the mostly-ephemeral data from these events can be recovered and used to further advances in earthquake hazard mitigation.

1999年6月15日（矩震级7.0）和6月21日（M = 6.3）墨西哥中部地区发生了强烈地震。 第一次地震造成15人死亡。 第二次地震没有造成人员死亡，但数千座建筑物受损，有些严重。 最显著的影响发生在无钢筋砌体（URM）结构，如教堂和小土坯和甘蔗房。 在某些情况下，场地效应可能很重要。 一个由加州大学伯克利分校（UC）和墨西哥国立自治大学（UNAM）的研究生和教师组成的研究小组对地震岩土工程问题进行了震后初步现场调查，太平洋地震工程研究中心（PEER）赞助。这一行动是为了支持出版一份关于这些地震的关键岩土工程方面的报告。 这份报告以硬拷贝形式提供，并通过万维网提供，以便传播所吸取的主要经验教训，这一行动是在1985年墨西哥地震后支助的类似工作之后采取的，是对正在提供的支助的补充，以协助维护和分发来自沿着墨西哥西海岸的格雷罗强震阵列的数据。 与所有地震后勘测调查一样，由于墨西哥最近发生的这些地震，预计将获得重要记录和数据。 从科学的角度来看，这些大地震是一个全面的实验，无法通过实验室或现场的控制实验来复制。 正是通过快速反应的侦察工作，这些事件的大多数短暂的数据可以恢复和用于进一步推进减轻地震灾害。