The compression properties of naturally and artificially structured soils under one-dimensional compression or isotropic compression are described comprehensively. The reconstituted soil samples or the elastoplastic element of breakage mechanics for geological materials are regarded as the reference state; then by introducing a structured state parameter ? reflecting the influence of soil structure

the formula of the compression curve of structured soils is established. Finally

the proposed model has been verified for two different structured soils under confining stress conditions and under isotropic stress conditions respectively; and it is seen that the proposal describes well the behavior of these two soils. The formula suggested reflecting the nonlinearity of compression curve for structured soils has some theoretical meaning for the settlement calculation of structured soils.