三次元挙動をする複合地盤の二次元有限要素解析法
1988 年 1988 巻 400 号 p. 113-121
詳細
1988 年 1988 巻 400 号 p. 113-121
In order to analyze the clay layer improved by sand piles, called the ‘composite ground’, a numerical method is proposed using the special plane strain element whose degree of freedom is reduced to two for each nodal point by constraint conditions. The three-dimensional behavior of the composite ground under plane strain condition can be analyzed by the two-dimensional FEM code using the proposed element. This element is also extended to analyze the coupled problem of flow in the ground such as ‘vertical drain’, which takes the stiffness of the drain into account. The proposed finite element method for the composite ground is checked by comparing the computed values with the three-dimensional analytical results as elastic and elasto-plastic materials.
