Self-attitude control type submerged box and construction method of submerged tunnel

摘要

PROBLEM TO BE SOLVED: To provide a self-posture control type submerged caisson which can dispense with work for installing, on a water bottom, a reaction member of a height-adjusting jack of the submerged caisson which is performed prior to the installation of the submerged caisson, and work for adjusting a horizontal jack between bulkheads of the submerged caisson, and can largely shorten a construction period, and a construction method of a submerged tunnel.SOLUTION: A self-posture control type submerged caisson 10 comprises: a submerged caisson 1; a reaction force pedestal 2 which is arranged below the submerged caisson 1; and a vertical jack 3 and a horizontal jack 4 which are arranged between the submerged caisson 1 and the reaction force pedestal 2. The reaction force pedestal 2, the vertical jack 3 and the horizontal jack 4 are arranged at the submerged caisson 1 in advance prior to installation.