CAISSON OVER-SETTLEMENT PREVENTION DEVICE AND CAISSON IMMERSION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a caisson over-settlement prevention device and caisson immersion method which can easily prevent an excessive settlement in the open caisson method. SOLUTION: A caisson over-settlement prevention device 10 comprises a plurality of long-sized support columns 12... installed at the upper end portion of the caisson in the axial direction of the caisson 5 and stopper beams 13... with the end portions 13a projected outwardly from the caisson 5 between the upper end portions of the support columns 12.