Journal of Jilin University(Earth Science Edition) ›› 2021, Vol. 51 ›› Issue (5): 1408-1415.doi: 10.13278/j.cnki.jjuese.20210097

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Comparison of Normality Test Methods on Geotechnical Parameters Based on Piezocone Penetration Test

Lin Jun1,2, Cai Guojun2, Liu Songyu2, Zou Haifeng2, Hou Xinyu1   

  1. 1. School of Architecture and Civil Engineering, Jiangsu Open University, Nanjing 210036, China;
    2. Institute of Geotechnical Engineering, Southeast University, Nanjing 210009, China
  • Received:2021-03-29 Online:2021-09-26 Published:2021-09-29
  • Supported by:
    Supported by the Open Fund Project of Key Laboratory of Building Collapse Mechanism and Prevention of China Earthquake Administration (FZ201101), the National Natural Science Foundation of China (U1939209), the Key Project of Key Laboratory of Earthquake Engineering and Engineering Vibration, China Earthquake Administration (2020EEEVL0201) and the Research Subject of Major Policy Theory and Practice of China Earthquake Administration (CEAZY2020JZ07)

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Abstract: Normality assumption is one of the fundamental prerequisites of geotechnical risk assessment. Currently the Kolmogorov-Smirnov (KS) test is mainly applied to assess the normality of geotechnical parameters in geotechnical literatures;However, many studies demonstrated that the power of the KS test might be the lowest among the common formal normality tests for a small sample size. With the piezocone penetration test data collected from the floodplain silts of abandoned Yellow River, the performance of four formal normality tests was assessed, including Shapiro-Wilk (SW) test, KS test, Lilliefors (LF) test, and Anderson-Darling (AD) test. The ANOVA test was utilized to identify the samples of the same population. The normality tests were performed on different sample volume. When the sample size is sufficient,the results show that:Among the four formal normality tests, the KS test provides the least conservative assessment on rejecting normality assumption, the SW test is the strictest, while the strictness of LF test and AD test is between the two; For conventional geotechnical engineering design, the KS test result can meet the stability analysis requirements, while for complex geotechnical engineering design, the SW test is used to test the normality of the design parameters to reduce the design uncertainty.

Key words: piezocone penetration test, geotechnical parameters, normality test, variance analysis

CLC Number: 

  • TU413
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