| 摘要 |
The present invention relates to a micropile fixed in soil by pressure injection grouting and a construction method thereof, wherein an upper load can be supported effectively owing to an increase in friction on a main surface, which is caused by consolidation grouting into the surrounding ground, even in the case of the ground of soil by sealing the upper end of the micropile compressed by a packer member. The micropile fixed in soil by pressure injection grouting according to the present invention is a micropile fixed in soil by pressure injection grouting for transmitting the compressing force of an upper structure to the ground in the case of the ground of soil. The micropile fixed in soil by pressure injection grouting comprises: a main body of the micropile inserted into a hole; a packer member arranged at the upper end of the outer circumferential surface of the main body of the micropile above the hole, wherein the packer member is a tube-shaped fiber packer for sealing the inside of the hole by being filled with a first injection material and expanding; an expanding injection pipe combined with one side of the packer member to inject the first injection material into the packer member; a main injection pipe combined with side surface of the main body to inject a second injection material into the hole and extending to the lower end of the main body of the micropile; and a main surface cone having a wide top and a narrow bottom, having a combination hole formed in the middle to be screwed to the outer circumferential surface of the lower part of the main body of the micropile, and having multiple through-holes formed vertically at regular intervals to be penetrated by the main injection pipe. |
