3Seed H B, Clarence K C. Clay strength under earthquake loading condition [ J ]. Journal of the Soil Mechanics and Foundations Division (ASCE), 1966, 92: 53-78.
4Monismith C L, Ogawa N, Freeme C R. Permanent deformation characteristics of subgrade soils due to repeated loading [ J ]. Transportation Research Board,1975, 537:1-17.
5Kaynia A M, Madhus C, Zackrisson P. Ground vibration from high-speed trains: prediction and counter- measure [ J ]. Journal of Geotechnical Geoenvironmental Engineering, 2000, 126(6) : 531-537.