Based on consolidation theory of one dimension and theory of effective consolidated stress solution about strength increase of foundation, this paper gives a calculation way of consolidated degree which can reflect more loading realities and Calculation ways with effect of depth on strength increase about strength and stability.

Research on relationship between permeability coefficient and consolidation stress of normal consolidation clay

It is shown that the stress paths together with the consolidation stress σc are the main external influential fac.

With free piston thin wall sampling technique and vacuum freeze drying method,undisturbed and remolded samples in different consolidation stress were made.

For over-consolidated strata,land subsidence usually occurs under the critical condition that initial additional stress is larger than over-consolidation stress.

Effect of consolidation stress ratio on dynamic strength and dynamic pore water pressure of soil;

The author of this article discusses varying regularity of pore pressure in saturaiton loess under different scale dynamic load,different form dynamic load,different vibrating frequency and different consolidation stress ratio.

Damping ratio is affected by the moisture,consolidation stress ratio,confining pressure and dry density of the compacted loess which increases with the increase of dynamic strain generally;and its value is distributed in 0.

Vacuum drainage dynamic consolidation method for soft soil is discussed to bring forward some attention questions.

In combination with the project example for the pavement cracking due to back fill density of rainwater and se￣wage pipe trough under roads not meet the design requirement,it should be consolidated by sleeve-valve type split grouting method and dynamic consolidation method.

The mechanism,technology and application range of dynamic drainage consolidation method and dynamic consolidation method are compared.