TENSION MOORING DEVICE FOR SHALLOW WATER AREA

摘要

PURPOSE:To increase a natural through weakening of restoration characteristics against horizontal displacement and to prevent the occurrence of resonance with waves by locating a displacement restoring means to exert a restoration force in a horizontal direction to a coupling part with a chain, in a float coupled to an anchor on a seat bottom through the chain. CONSTITUTION:A cylindrical buoy 1 is moored to an anchor 3 on a sea bottom through a chain 2 having a pretension. In this case, a displacement restoring device 5 is located to a coupling part 4 to the chain 2 located to the lower part of the buoy 1. In the displacement restoring device 5, a longitudinally movable x-direction truck 6 is placed on the upper surface of a laterally movable y-direction truck 7 through a roller 8, and a restoration force is exerted through the force of a spring 10. The y-direction truck 7 is placed on the upper surface of the bottom part of the buoy 1 through a roller 9, and a restoration force is exerted thereon through the force of a spring 11. Further, the chain 2 has the one end coupled to the X-direction tuck 6. This constitution weakens restoration characteristics against horizontal displacement of the buoy 1.