This thesis analyzes,gets the basic conclusion herein through co-integration model: The good performance motive force route to spur the economic growth of Changzhou is consumption,investment and exports,among which consume is the long-term main motive force.

Numerical simulation of stress path tests on sand;

Tangent elastic modulus of Duncan-Chang model for different stress paths;

Discussions on yield criterions and stress paths of soils in tests and numerical analyses;

Test and modulus formula for lateral unloading and loading stress paths during excavation in foundation pit;

Research on relation between soil pressure and displacement by tests of stress paths;

And also unique effective stress path is demonstrated to be true of equations of pore pressure under various total stress paths.

On stress route of loosening soft soil and its strength influence;

The development of inducing stress aeolotropism in clay which was not only decided by the maximum stress force, but also lied on the stress route of reaching the maximum stress point of clay.

Started from stress route,it analyzes the principles of vacuum rainfall reinforced road bank thick soft base.

This paper detailed discusses how to choose the analysis method of slopes stability under the different stress-path and soil condition, and also analyses how to choose shear strength parameters for the analysis method choosed of slopes stability.

The use of Lade\'s single work-hardening model for predicting the sand response for a variety of stress-paths have been investigated and examined.