›› 2014, Vol. 35 ›› Issue (S2): 61-67.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Parameter inversion of nonlinear constitutive model of rockfill materials using observed deformations after dam construction

LI Shou-ju1，ZHANG Jun2，LIANG Jin-quan1，SUN Zhen-xiang1   

  1. 1. State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian, Liaoning 116024, China; 2. Liaoning Pushihe Pumped Storage Company Limited, Dandong, Liaoning 118000, China
  • Received:2013-03-27 Online:2014-10-31 Published:2014-11-12

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Abstract: In order to determine nonlinear constitutive model parameters of rockfill materials, the inversion procedure based on response surface method is proposed. The sequential impoundment processes of concrete-faced rockfill dam are simulated by using nonlinear finite element method. The response surface functions of forecasting dam settlement for every observing point are presented. The coefficients of response surface function are calculated. Model parameters of nonlinear constitutive relationship of rockfill materials are determined using observed deformations after dam construction and response surface functions of forecasting dam settlement. The practical applications show that the proposed inversion procedure is of higher computing efficiency; and the forecasted dam settlements agree well with observed values.

Key words: model parameter inversion, concrete-faced rockfill dam, constitutive model, dam settlements, response surface, optimization algorithm

CLC Number: 

  • TV 33
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