Abstract
The liquefaction of saturated soils is a major concern for the earthquake damage of foundation. Due to the difficulty and cost constraint in obtaining high-quality undisturbed samples, in situ testing is commonly applied to evaluating the potential of soil liquefaction. At present, numerous methods based on the cone penetration test (CPT) have been developed, but none of them has been accepted to be the most reliable one. In high risk projects, a comprehensive evaluation based on various methods is usually adopted, and thus the research on new method to evaluate the liquefaction is still necessary. In this research the feasibility of using resistivity piezocone penetration test (RCPTU) for predicting liquefaction resistance is investigated. The resistivity of saturated silts and sands is measured using RCPTU at a test section of Suqian-Xinyi expressway. The study on combination of resistivity and soil behavior type index to directly calculate the cycle resistance ratio (CRR) is conducted with the CRR from Robertson modified liquefaction evaluation model as reference. The state parameter (Ψ) to directly calculate the cycle resistance ratio (CRR) is also analyzed. It is shown that the resistivity and soil behavior type index and the in situ state parameter (Ψ) are two good methods that used for effective evaluation of liquefaction potential of saturated soils.
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Acknowledgements
The work in this paper was supported by the Foundation for the New Century Excellent Talents of China (NCET-13-0118), the Foundation of Jiangsu Province Outstanding Youth (Grant No. BK20140027) and the Foundation for the Author of National Excellent Doctoral Dissertation of PR China (Grant No. 201353).
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Duan, W., Cai, G., Zou, H., Liu, S. (2018). Evaluation of Liquefaction Potential of Saturated Sands Based on Resistivity Piezocone Penetration Testing—A Case Study. In: Bian, X., Chen, Y., Ye, X. (eds) Environmental Vibrations and Transportation Geodynamics. ISEV 2016. Springer, Singapore. https://doi.org/10.1007/978-981-10-4508-0_46
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DOI: https://doi.org/10.1007/978-981-10-4508-0_46
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