RAPID: Geotechnical Engineering Reconnaissance of the M 8.8 Chile Earthquake of February 27, 2010

RAPID：2010年2月27日智利8.8级地震岩土工程勘察

基本信息

批准号：
1034831
负责人：
Jonathan Bray
金额：
$ 9.69万
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：
2010
资助国家：
美国
起止时间：
2010-05-01 至 2011-04-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1034831&HistoricalAwards=false
关键词：
RAPID Geotechnical Engineering Reconnaissance 8.8

项目摘要

On February 27, 2010 a magnitude Mw 8.8 earthquake struck the central west coast of Chile (named by the USGS as the Magnitude 8.8 Offshore Maule, Chile Earthquake). A megathrust Mw = 8.8 event that affects natural ground and engineered facilities in coastal, plain, and mountainous areas is of great importance for the Pacific Northwest of the United States and for many similar earthquake scenarios throughout the world. Capturing details of lateral spreads and the impacts of liquefaction on well-built structures, such as port facilities, are important. Documenting how some marginal earth structures survived is important. Characterizing the performance of earth dams and tailings dams at different epicentral distances is critical. Understanding how soil/geologic conditions influenced the observed damage patterns is important. Documenting the effects of long duration ground motions in the field is critical. Tectonic deformation and secondary surface fault rupture effects may also be important. Field reconnaissance will be focused on capturing perishable data, but the team will also perform geotechnical characterization of the soils through: (1) examination of ejecta, (2) hand-held cone penetration tests, and (3) hand-carried equipment to measure shear wave velocities (Vs).This reconnaissance team is coordinated through the Geoengineering Extreme Events Reconnaissance (GEER) Association. The GEER team is working closely with the reconnaissance teams coordinated by other organizations such as the Earthquake Engineering Research Institute (EERI) and the Ocean Science Tsunami Group.

2010年2月27日，智利中西海岸发生里氏8.8级地震（美国地质勘探局将其命名为里氏8.8级莫莱近海地震）。影响沿海、平原和山区自然地面和工程设施的 Mw = 8.8 的巨型逆冲事件对于美国西北部太平洋地区以及世界各地的许多类似地震情景具有重要意义。捕获横向扩散的细节以及液化对港口设施等精心建造的结构的影响非常重要。记录一些边缘地球结构如何幸存下来非常重要。表征不同震中距处土坝和尾矿坝的性能至关重要。了解土壤/地质条件如何影响观察到的损害模式非常重要。记录现场长时间地面运动的影响至关重要。构造变形和次生地表断层破裂的影响也可能很重要。现场勘察的重点是捕获易腐烂的数据，但该团队还将通过以下方式对土壤进行岩土表征：（1）喷射物检查，（2）手持式锥入度测试，以及（3）手持设备进行测量剪切波速度 (Vs)。该侦察队通过地球工程极端事件侦察 (GEER) 协会进行协调。 GEER团队正在与地震工程研究所（EERI）和海洋科学海啸小组等其他组织协调的侦察队密切合作。