| 摘要 |
PROBLEM TO BE SOLVED: To provide a ground improvement method by chemical injection and an assembly structure of improvement bodies that can control uneven settlement on a ground surface or a ground, even when an amount of injected chemical is reduced.SOLUTION: With the ground improvement method by chemical injection, a ground is improved by forming a plurality of roughly spherical improvement bodies by chemical injection, arranged in a series in horizontal and depth directions in the ground. Four improvement bodies 11a, 12a, 13a, 14a are treated as a group, the improvement bodies being installed at a same depth and in contact with or overlapping with each other. The plurality of improvement bodies is formed in the ground, such that when seen from above, at least one improvement body 15a of four improvement bodies of another group is located at a spot corresponding to a not-yet-improved part 10 at a center of the group of the improvement bodies 11a, 12a, 13a, 14a that is adjacent to the other group in a depth direction.SELECTED DRAWING: Figure 1 |
