CONSTRUCTION METHOD OF DOUBLE SHEET PILE STRUCTURE AND DOUBLE SHEET PILE STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a double sheet pile structure construction method and a double sheet pile structure capable of efficiently and stably constructing a double sheet pile structure even under a condition of deepwater where a double sheet pile structure is impossible with ordinary steel pipe sheet piles.SOLUTION: The double sheet pile structure is constituted of at least two separated parts which are vertically aligned, i.e. front sheet piles and rear sheet piles. The construction method of the double sheet pile structure includes: drilling the foundation ground at the water bottom; installing guide frames 10; installing separated lower sheet piles 11A, 12A via the guide frames; feeding solidified soil 21 between the installed lower front sheet piles and the rear sheet piles as a filling material; installing the separated upper sheet piles on the lower sheet piles; and feeding a solidified soil between the installed upper front sheet piles and the rear sheet piles as a filling material.