Crushed stone post formation construction method and the crushed stone post formation device which is used for this

摘要

Topic Try to be able form the satisfactory crushed stone post whose bearing capacity is high with soft ground. SolutionsWhile investigating target ground g with rotary excavation means, 5 laying out the cylindrical casing 6 of larger diameter than this on excavation hole 11 where it occurs making liquefied conversion phenomenon ground g around cause in this including vibration pressurization, to press in this in ground g, after that, to pull up cylindrical casing 6, in hole 12 for the post of that lower part to enter the crushed stone from crushed stone input port 6b the bottom, next, after closing crushed stone input port 6b, through cylindrical casing 6, in the entry crushed stone including vibrating welding force, in ground around furthermore causing liquefied conversion phenomenonWhile, it tightens the entry crushed stone and compacts, next, tightens from pulling up the cylindrical casing 6 above and compacts and cycle to completion, until is completed concerning all range of height direction of the hole 12 for the post it iterates, after that, around sinking with liquefied conversion phenomenon, the earth laid it does on ground g. Choice figure Drawing 1