J4 ›› 2011, Vol. 41 ›› Issue (2): 465-470.

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Fractal Geometry of Consolidation Settlement of Soft Soil Based on Simulation Experiment

WANG Qing1,SANG Wei-feng1,XU Li-ming1, NIU Cen-cen1,ZHOU Fu-jun1,YANG Jing1|2   

  1. １．College of Construction Engineering|Jilin University|Changchun130026|China;
    2．Computer and Information Center, Three Gorges Geotechnical Consultants Co.,Ltd,Wuhan430074,China
  • Received:2010-06-18 Online:2011-03-26 Published:2011-03-26

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Abstract:

A more accurate and simpler method is suggested to calculate and predict settlement of soft soil by analysis and evaluation of fractal geometry. In this paper, SEM, settlement and void ratio of samples in different consolidation periods are obtained by laboratory experiments. Software WD-5 is used to process the SEM images of samples in different consolidation periods based on the simulation experiment. And then the fractal dimension of pore distribution is obtained. Finally the relative equation is established between degree of consolidation and fractal dimension. The results show that fractal dimension of pores distribution decreases with the increasing of settlement. There is a clear turning point at the time of 42.33 h in the consolidation. Results of the calculation are basically agree  with the measurement in tests.

Key words: soft soil, simulation experiment, fractal dimension, consolidation settlement

CLC Number: 

  • P642.133
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