Construction construction method null of rim cofferdam embankment of artificial

摘要

PURPOSE:To provide a construction method which requires little temporary equipment, does not cause pollution of a sea area and improves the execution efficiency. CONSTITUTION:Trimming unit component members formed by inserting unit tube bodies 3 having flexibility and airtightness in multi-stage circular spaces partitioned by disposing grid frames extending between upper and lower circular form retaining frames 1 are alternately sunk along the outer periphery of an artificial island to be constructed in the sea. A fluid hardening material is poured and hardened in the unit tube bodies to construct a preceding trimming unit A. Subsequently, a succeeding trimming unit A' is constructed between adjacent units A by the same construction method as that of the unit A, and the peripheral closing levee of the artificial island is constructed by both units A, A'.