Abstract
The method proposed in this paper is able to perform economically the FEM analysis for the large-scale composite ground improved by sand piles. The method treats the stiffness of many pile lines as one of ‘a typical element’ by assuming some interpolate relationships between nodal displacements. As a result of analyzing the composite ground by the proposed method, it is clarified that ‘a typical element’ binding half of all pile lines shows reasonable output, that is, yield load on undrained condition and settlement during consolidation in the case of the ground whose lateral deformation is large. In the ground deformed one-dimensionally ‘a typical element’ can bind more pile lines to analyze within the allowed error. In such a case the proposed method is very efficient in terms of computing time and memoery capacity.
