Ice-Induced Vibration Reduction on a Mooring Dolphin Platform Using an Isolation Cone System

摘要

Abstract Field tests indicate that strong ice-induced vibration is a common safety risk for offshore platform structures in cold regions. The isolation principle may provide a solution to reduce ice-induced vibrations, considering the position and movement direction of the ice sheet interacting with platform piles. In this study, an isolation cone system is designed and installed on a mooring dolphin platform in the Bohai Sea. The isolation cone system comprises cones and laminated rubber bearing isolators and is installed on the platform piles to reduce dynamic coupling between the ice sheet and platform structure. Field tests indicate that the ice-induced vibration acceleration of the platform structure is significantly reduced and the isolation cone system can have a significant affect in reducing ice-induced vibration of offshore platform structures.