By building test road,this paper studies the compaction characteristics,the geogrid in situ and long term deformation of geogrid reinforced embankment with steep slope.

According to the experimental data, a mathematical model on long term deformation of the remolded swelling soil under dynamic load is suggested.

The experimental study on the long-term deformations in high performance concrete beam;

In the calculation of long-term deformation of full PC beams, there are no corresponding guidelines in the current Chinese “Code for Design on Reinforced and Prestressed Concrete Structures of Railway Bridges and Culverts”(TB 10002.

A general analyzing method was put forward so as to induce the nature and principle of the long-term deformation of reinforced concrete bending elements.

The investigation of deformation process and anomalous characteristics for arch dam and its abutments built on complex rock foundation;

The deformation process of tube cold rolling on double-set multi-roll mill is studied and the calculation formulation of deformation for once roll,elongation coefficient, relative reduction of wall thickness per rolling schedule are deduced.

The deformation process of strips trimming is introduced.

In this article some causation of slip and the calculation methods of freely setting station are first discussed,and then combined with the theory of polar coordinates a forecast method through distortion course curve analysis is put forward.