Discussion on the Plasticity Coefficients of the Nanshui Double Yield Surface Model
The Nanshui double yield surface model proposed by Member of Chinese Academy of Science Mr.Shen Zhujiang in the 1990s has been widely used because of its unique and innovative modeling ideas,which consider the convenience of the ap-plication and the completeness of the theory.However,in recent years,in several geotechnical academic monographs,disserta-tions and journal papers,there have been many very different forms of expression of the plasticity coefficient of the Nanshui double yield surface.The reasons for this analysis have found that some formulas are published incorrectly,some formulas have different assumptions,and some are slightly wrong.Copying these formulas will make it very easy for geotechnical practition-ers to wrongfully use the Nanshui double yield surface model.It is recommended that when using the Nanshui double yield sur-face model,the assumptions must first be clarified.
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