在重新考虑2010年7.0级海地地震在太子港和东北平原的地震动效应时,加勒比海大、小安的列斯群岛土壤液化的回顾

IF 3.1 2区 工程技术 Q2 ENGINEERING, CIVIL Earthquake Spectra Pub Date : 2023-09-27 DOI:10.1177/87552930231190902
Jean-Robert Pierre
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引用次数: 0

摘要

2010年1月12日,海地7.0级地震在太子港国际海港和东北平原造成广泛的土壤液化和地基破坏,导致基础设施受损。本研究通过探索现有的钙质砂研究,回顾加勒比群岛的液化现象,并将其与大安的列斯群岛和小安的列斯群岛的地震历史联系起来,重新审视了主震和余震事件对土壤液化的影响。由于群岛的地貌,城市发展通常集中在沿海,在易受土壤液化的地方。本研究表明,即使在低峰值地面加速度(PGAs)下,在海地M7.0地震中发生的液化也是由主震触发的,第一次余震效应显著,安的列斯群岛的土壤液化并不罕见。它确定了加勒比群岛地震引起的土壤液化历史案例的特征要素。此外,还指出了加勒比地区古液化和古地震活动调查的特点和发现。对加勒比群岛钙质砂液化和古地震学的调查和研究,对提高加勒比群岛地震危险性和危险性评价具有重要意义。大量相关研究的存在凸显了这一课题的重要意义。
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A review of soil liquefaction in the Caribbean Greater and Lesser Antilles in reconsidering the ground motion effect of the M7.0 2010 Haiti earthquake in the Port-au-Prince Seaport and Léogâne Plain
On 12 January 2010, the M7.0 Haiti earthquake caused infrastructure damage induced by extensive soil liquefaction and foundation failure in the Port-au-Prince International Seaport and Léogâne Plain. This study re-examines the soil liquefaction effects of the main shock and aftershock events by exploring the existing studies on calcareous sands, reviewing the phenomenon of liquefaction in the Caribbean Islands, and associating them within the seismic history of the Greater and Lesser Antilles. Due to the geomorphology of the Islands, urban development has typically been concentrated along the coast, in locations vulnerable to soil liquefaction. This study demonstrates that the liquefaction that occurred at sites in the M7.0 Haiti event was triggered by the main shock even at low peak ground accelerations (PGAs), the first aftershock effects were significant, and soil liquefaction was not rare in the Antilles. It identifies the elements that characterize historical cases of soil liquefaction caused by earthquakes in the Caribbean Islands. In addition, it points out the characteristics and findings of paleoliquefaction and paleoseismicity investigations conducted in the Caribbean region. Investigations and studies on the calcareous sand liquefaction and paleoseismology are essential to improve the seismic hazard and risk assessment of the Caribbean Islands. The existence of a large number of studies making reference to this topic highlights its significance.
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来源期刊
Earthquake Spectra
Earthquake Spectra 工程技术-工程:地质
CiteScore
8.40
自引率
12.00%
发文量
88
审稿时长
6-12 weeks
期刊介绍: Earthquake Spectra, the professional peer-reviewed journal of the Earthquake Engineering Research Institute (EERI), serves as the publication of record for the development of earthquake engineering practice, earthquake codes and regulations, earthquake public policy, and earthquake investigation reports. The journal is published quarterly in both printed and online editions in February, May, August, and November, with additional special edition issues. EERI established Earthquake Spectra with the purpose of improving the practice of earthquake hazards mitigation, preparedness, and recovery — serving the informational needs of the diverse professionals engaged in earthquake risk reduction: civil, geotechnical, mechanical, and structural engineers; geologists, seismologists, and other earth scientists; architects and city planners; public officials; social scientists; and researchers.
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