›› 2005, Vol. 26 ›› Issue (3): 387-391.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Logistic growth model and its applicability for predicting settlement during the whole process

XU Hong-zhong1,2, SHI Bin2, LI Xue-hong1   

  1. 1. College of Civil Engineering, Nanjing University of Technology, Nanjing 210093, China； 2. Department of Earth Science, Nanjing University, Nanjing 210009, China
  • Received:2003-12-02 Online:2005-03-10 Published:2013-11-21

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Abstract: The settlement-time relation of foundation during the whole process of construction and operation can be described by a sigmoid or S-shaped curve, which can be modeled by the logistic growth model. However the range of applicability and the prediction accuracy is seldom considered when using this model. According to the field data from practical engineering, Three methods for parameter estimation of the Logistic growth model are compared, and The comparison indicates that the nonlinear regression method has a better accuracy. The applicability and the prediction performance of the model are evaluated by using chaos theory. The dynamic behavior of Logistic growth model is controlled by parameter a, namely transient settlement rate. When parameter a is in the interval [0, 2], the final settlement predicted by Logistic growth model is stable.

Key words: settlement, Logistic growth model, chaos theory, prediction

CLC Number: 

  • TU 433
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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