砂柱の剛性を考慮した中空円柱の圧密解析と異方性中空円柱による近似
1988 年 1988 巻 400 号 p. 83-91
詳細
1988 年 1988 巻 400 号 p. 83-91
In an improved ground using a sand drain system, the difference in the rigidity between clay and sand causes the stress concentration on the sand columns in consequence of the progress of consolidation, thereby expanding the diameters of sand columns. In this paper, a consolidation theory is developed considering the rigidity of sand columns, on the assumptions that clay skeleton is anisotropic linear elastic, and sand columns are isotropic elastic body. And, the effects of the rigidity of sand columns and the anisotropy of clay acting upon the consolidation behavior are considered.
Besides, considerations are also given to the conditions of deformation in which the consolidation of the ground installed the sand columns is approximated by the use of the consolidation theory for the anisotropic hollow cylinder. The results thereof have arrived at the conclusion that the consolidation can be approximated by the use of the anisotropic hollow cylinder with the loading on the top surface, by restraining the displacement of the internal and external circumferential surfaces.
