7FREDLUND D G,RAHARDJO H.Soil mechanics for unsaturated soils[M].1st ed.NewYork:Wiley,1993.
8CHEN W F.Limit analysis and soil plasticity[M].New York:Elsevir Scientific Publishing Company,1975.
9SCHNAID F,CONSOLI N C,CUDMANI R O,et al.Load-settlement response of shallow foundations in structured unsaturated soils[C]// Proceedings of the First International Conference of Unsaturated Soils.Paris:[s.n.],1995:999-1 004.
10BROMS B B.The effect of degree of saturation on the bearing capacity of flexible pavements[J].Highway Research Record,1963,71(1):1-14.