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Evaluation of Liquefaction Potential of Saturated Sands Based on Resistivity Piezocone Penetration Testing

  • Guojun Cai
  • Haifeng Zou
  • Yan Yang
  • Songyu Liu
  • Anand J. Puppala
Conference paper

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. 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. First, the relationship between normalized cone tip resistance and resistivity is analyzed and can contribute to the evaluation of soil liquefaction based on resistivity. Second, 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 influence of thin cohesive layers and transition zones is also analyzed. It is shown that the resistivity and soil behavior type index can be used for effective evaluation of liquefaction potential of saturated soils.

Keywords

Resistivity Piezocone penetration test Liquefaction Soil behavior type index Cycle resistance ratio 

Notes

Acknowledgements

Majority of the work presented in this paper was funded by the National Key Research and Development Program of China (Grant No. 2016YFC0800201) and the National Natural Science Foundation of China (Grant No. 41672294).

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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Guojun Cai
    • 1
  • Haifeng Zou
    • 1
  • Yan Yang
    • 1
  • Songyu Liu
    • 1
  • Anand J. Puppala
    • 2
  1. 1.Southeast UniversityNanjingChina
  2. 2.The University of Texas at ArlingtonArlingtonUSA

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