| 摘要 |
PURPOSE:To construct a semi-permanent marine structure by a method in which a water-permeable layer and soil and sand layer are orderly provided from above in a cell with a bottom plate of a water-impermeable membrane, and a water-inside-cell discharge tube projected through the soil and sand layer from the water-permeable layer to the upside of the cell is provided. CONSTITUTION:A steel cell 8 having a bottom plate 7 made of a water-impermeable membrane, e.g., a steel sheet, a water-impermeable rubber, concrete, etc., on its bottom is settled into water. One or more water-inside-cell discharge tubes 10 are set on the bottom of the cell in such a way as to project the tops of them through the upper part of the cell. Gravel, etc., is charged to the bottom of the cell to form a water-permeable layer 9 and soil and sand are charged onto the layer 9 to form a soil and sand layer 11. Since the residual water lever in the cell can be lowered thereby, compression force and tensile force to be generated in the upper and lower parts of the cell 8 can be controlled within allowable values. |
