Journal of Jilin University(Earth Science Edition) ›› 2021, Vol. 51 ›› Issue (5): 1356-1365.doi: 10.13278/j.cnki.jjuese.20210005

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Statistical Analysis of Physical and Mechanical Properties of Three Special Soils

Qiao Feng1, Bo Jingshan1,2, Chang Chaoyu1, Li Qi2, Yang Yuanmin1   

  1. 1. Institute of Disaster Prevention, Institute of Geological Engineering, Sanhe 065201, Hebei, China;
    2. Institute of Engineering Mechanics/Key Laboratory of Earthquake Engineering and Engineering Vibration, China Earthquake Administration, Harbin 150080, China
  • Received:2021-01-10 Online:2021-09-26 Published:2021-09-29
  • Supported by:
    Supported by the National Natural Science Foundation of China (U1939209), the Central University Basic Research Business Terminal Special Fund Innovation Team Funding Project (ZY20160101), the Open Fund Project of Key Laboratory of Building Collapse Mechanism and Prevention of China Earthquake Administration (FZ201101), the Key Project of Key Laboratory of Earthquake Engineering and Engineering Vibration of China Earthquake Administration (2020EEEVL0201) and the Research Subject of Major Policy Theory and Practice of China Earthquake Administration (CEAZY2020JZ07)

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Abstract: Conventional physical and mechanical indicators can well reflect the engineering properties of soil. Through collecting relevant monographs, scientific papers, and seismic safety evaluation reports on soft soil, loess and red soil national widely, the statistics of the range, average value, and coefficient of variation of various physical and mechanical indicators of the three special soils were obtained. Based on the correlation analysis between the indicators, the engineering characteristics of the three special soils were studied. The comparison results show that the coefficient of variation of the physical properties of the three special soils is generally small and relatively stable, while the coefficient of variation of the mechanical properties varies greatly and discretely; There is a correlation between the physical and mechanical properties of the three special soils, either in a linear, or a belt-like change; The correlation coefficients of similar indicators of soft soil and red soil are higher than that of loess. The fitting formula of|r|∈[0.5, 1.0] is given by the regression fitting method used to test the precision and accuracy of the formula based on the linear relationship test. The results show that the F values of the fitting formula given in this paper are all greater than F0.05,it can be seen that the regression effect is more obvious, which is convenient for engineering application.

Key words: special soil, engineering characteristics, database, statistical analysis

CLC Number: 

  • TU435
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