| 摘要 |
<p>Title: METHOD OF PROTECTING OFFSHORE STRUCTURES AGAINST ICEBERG IMPACTS Inventor: STIG BERNANDER The invention relates to a method for protecting offshore structures such as oil platforms against impacts from icebergs by attenuating the impact energy of the icebergs. Attentuation of the iceberg's energy is achieved through the use of cables, chains or other flexible tension members which are attached to energy absorbing devices on the structure. The cables are disposed around the structure to be protected, with one end anchored on the seabed and the other end attached to the structure via the energy absorbing device. The impact of an iceberg against the cables causes movement in the energy absorption device and, consequently, elongation of the cables under tension. The energy absorbed in this manner brings the iceberg to a stop considerably more slowly than would be possible if one were relying on crushing of the ice mass alone. The stopping force is thereby reduced and so, consequently, is the structural strength required of the offshore installation.</p> |
