7[1]Leroueil S,Vaughan P R.The general and congruent effects of structure in natural soils and weak rocks[J].Gotechnique,1990,40(3):467-488.
8[2]Schmertmann J H.The mechanical aging of soils[J].Journal of the Geotechnical Engineering,Division Amer-ican Society of Civil Engineers,1991,l17(9):1288-1330.
9[3]Burland J B.On the compressibility and shear strength of natural clays[J].Geotechnique,1990,40(3):329-378.