Construction method of continuous underground wall and steel pipe pile

摘要

To construct a continuous underground wall having a high strength with a smaller number of working man-hours at low cost without generating industrial wastes.SOLUTION: A method for constructing a continuous underground wall R includes: a steel pipe installation step of continuously and alternately installing a first steel pipe 1 and a second steel pipe 2; a drilling step of drilling the insides of the first steel pipe 1 and the second steel pipe 2; a first solidification material filling step of pulling out the first steel pipe 1 while or after filling the first steel pipe 1 with concrete; and a second solidification material filling step of pulling out the second steel pipe 2 while disturbing first piles 1Aa and 1Ab with a claw part 3 projecting to the outside of the second steel pipe 2 while or after filling the second steel pipe 2 with concrete. Both sides of the second pile 2Aa are connected to the first piles 1Aa and 1Ab by replenishing concrete while disturbing the first piles 1Aa and 1Ab with the claw part 3.SELECTED DRAWING: Figure 7