›› 2002, Vol. 23 ›› Issue (1): 27-30.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study on parameter of unloading modulus

ZHANG Xiao-ping ,ZHANG Qing -lin ,BAO Cheng -g ang ,SHI Bin   

  1. 1.Department of Earth Sciences,Nanjing University,Nanjing210093,China;2.Tenth Corporation of Thirteenth Metallurgy Building Company,Tianjin300301,China;3.Yangtze
  • Received:2000-01-08 Published:2002-01-15

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Abstract: displacement computation of cutoff wall of second-phase cofferdam in Three Gorges project ,shows that the parameter of unloading modulus in Duncan-Chang nonlinear elastic E-ｕmodel has a fairish influence on precision of calculation .It is known by experimental data that the coefficient of loading modulus is dependent on component and density of every kind of soil ,and was obtained the empirical relation between loading modulus parameter and unloading modulus parameter from the experimental curve .So , unloading modulus parameter can be determined directly from loading modulus coefficient ,which coheres with practical circumstances in general .

Key words: Duncan-Chang E-ｕmodel, parameter of loading modulus, parameter of unloading modulus

CLC Number: 

  • TU411
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