Study on the Force Analysis of Compressvely Pre-Stressed Anchorage Placed in Nonhomogeneous Stratum

Considering the fact that anchorage is placed in the non-homogeneousstratum in most cases,the whole anchorage element is looked as a series of discrete sub-anchorage elements around by homogeneous media in order to analyze it's states.And then,an analytical solution has been found on the continuum and compatible conditions between the conjoint sub-anchorages by using the Winkler assumption for the compressively pre-stressed anchor.At the same time,a general program is developed according to the forementioned theory and method.Subsequently,the validity of the solution is proved with a simple example.At last,it is indicated that the author's solution is practicable by analyzing an actual compressively pre-stressed anchor,which is placed in non-homogeneous stratum and tested elaborately in site by Kim in 2003.