Field Investigation of Maximum Dynamic Shear Modulus of Clay Deposit Using Seismic Piezocone

  • Zhaoyu Wang
  • Nan Zhang
  • Guojun Cai
  • Qi Li
  • Jiajia Wang
Research paper


The maximum dynamic shear modulus (Gmax) of soils is a fundamental parameter used in the evaluation of soil dynamic behavior and seismic design in geotechnical engineering. In this study, seismic piezocone (SCPTU) and resonant column (RCT) test methods were adopted for measuring soil shear wave velocity (Vs) in Jiangsu Province of China. Then, the relationship between the Gmax and SCPTU test parameters was established based on the test data of shear wave velocity. The results show that using the correlation between the cone resistance (qt) and void ratio (e) or pore pressure parameter (Bq) to evaluate Gmax was better than using the single-cone tip resistance parameters. The Gmax of the soft soil can be determined more accurately using the cone tip resistance and pore pressure parameters measured by the SCPTU test method, and corrected based on the laboratory test data. The evaluation of Gmax based on the RCT test results was not satisfactory due to the soil disturbance induced during sampling and testing processes.


Seismic piezocone Resonant column Soft clay Maximum dynamic shear modulus 



This research was financially supported by the Natural Science Foundation of Jiangsu Province (Grant No. BK20161311), Joint Technology Transfer Center of Yancheng Vocational Institute of Industry Technology, Yancheng Polytechnic College (Grant No. YGKF-201705), Six Major Talent Peak in Jiangsu Province in China (Grant No. 2015-JZ-011), and Innovation of Science and Technology of Institution of Higher Education in Jiangsu Province (Grant No. 2017-51). The authors are also grateful to Dr. Xinbao Yu and Dr. Cheng Lu for their constructive comments on this paper.


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Copyright information

© Iran University of Science and Technology 2018

Authors and Affiliations

  • Zhaoyu Wang
    • 1
  • Nan Zhang
    • 2
  • Guojun Cai
    • 3
  • Qi Li
    • 1
  • Jiajia Wang
    • 1
  1. 1.College of Civil EngineeringYancheng Institute of TechnologyYanchengChina
  2. 2.Department of Civil EngineeringThe University of Texas at ArlingtonArlingtonUSA
  3. 3.Institute of Geotechnical EngineeringSoutheast UniversityNanjingChina

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