MARINE STRUCTURE AND CONSTRUCTION METHOD FOR MARINE STRUCTURE

PROBLEM TO BE SOLVED: To provide a marine structure and a construction method for the marine structure capable of eliminating residual settlement in the ground, resisting to a horizontal force generated when earthquake occurs, and suppressing increase of construction cost and maintenance cost and having a high degree of utilization. SOLUTION: At the sea where sea bottom ground is composed of a rock-bed layer 10a, a diluvium layer 10b, and an alluvium layer 10c, reclaimed ground having a low crest is formed to construct a pier structure on the reclaimed ground. One end part 21 of the marine structure 1 is driven into the rock-bed layer 10a, and the other end part 22 thereof is provided with many steel pipe piles 2 at higher positions that the ground surface A of the reclaimed ground and a floor slab 3 laid on the steel pipe piles 2.