| Shear wave velocity-based liquefaction evaluation in the great Wenchuan earthquake： a preliminary case study |
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| 作者单位： | MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China
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| 基金项目： | 国家重点基础研究发展规划(973计划)，Foundation for Seismological Researches;China Earthquake Administration，中国博士后基金，国家自然科学基金 |
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| 摘 要： |
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| 关 键 词： | 液化评价 剪切波速 地震线 汶川 案例 土壤液化 地震危险性 成都平原 |
| 收稿时间： | 19 February 2007 |
Shear wave velocity-based liquefaction evaluation in the great Wenchuan earthquake: a preliminary case study |
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| Authors: | Yanguo Zhou Yunmin Chen Daosheng Ling |
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| Institution: | MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China |
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| Abstract: | The great Wenchuan earthquake (Ms = 8.0) in 2008 caused severe damage in the western part of the Chengdu Plain. Soil liquefaction was one of the major causes of damage in the plain areas, and proper evaluation of liquefaction potential is important in the definition of the seismic hazard facing a given region and post-earthquake reconstruction. In this paper, a simplified procedure is proposed for liquefaction assessment of sandy deposits using shear wave velocity (Vs), and soil liquefaction from the Banqiao School site was preliminarily investigated after the earthquake. Boreholes were made at the site and shear wave velocities were measured both by SASW and down-hole methods. Based on the in-situ soil information and Vs profiles, the liquefaction potential of this site was evaluated. The results are reasonably consistent with the actual field behavior observed after the earthquake, indicating that the proposed procedure is effective. The possible effects of gravel and fines contents on liquefaction of sandy soils were also briefly discussed. |
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| Keywords: | liquefaction Wenchuan earthquake shear wave velocity spectral analysis of surface waves (SASW) hazard definition |
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