In situ-based assessment of soil liquefaction potential–Case study of an earth dam in Tunisia

2014年第8卷第4期

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《结构与土木工程前沿（英文）》 >> 2014年第8卷第4期 doi: 10.1007/s11709-014-0259-5

In situ-based assessment of soil liquefaction potential–Case study of an earth dam in Tunisia

Department of Rural Engineering, National Agronomic Institute of Tunis, Tunis 1082, Tunisia

录用日期： 2014-07-15 发布日期： 2015-01-12

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摘要

The present paper examines the evaluation of liquefaction potential of an earth dam foundation in Tunisia. The assessment of soil liquefaction was made using deterministic and probabilistic simplified procedures developed from several case histories. The data collected from the field investigation performed before and after the vibrocompaction are analyzed and the results are reported. The obtained results show that after vibrocompaction, a significant improvement of the soil resistance reduces the liquefaction potential of the sandy foundation. Indeed, in the untreated layers, the factor of safety drops below 1 which means that the soil is susceptible for liquefaction. However, in the compacted horizons, the values of exceed the unit which justifies the absence of liquefaction hazard of the foundation.

关键词

liquefaction ; cone penetration test (CPT) ; standard penetration test (SPT) ; vibrcompaction ; sand