Ice-Induced Vibration Reduction on a Mooring Dolphin Platform Using an Isolation Cone System
Publication: Journal of Cold Regions Engineering
Volume 37, Issue 4
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.
Practical Applications
Safety risks exist for offshore platform structures under ice loads in cold regions; for example, offshore platform structure collapse, pipeline rupture. In recent years, engineers and academic researchers have constantly explored options to reduce the safety threat caused by ice load for offshore platform structures, specifically the ice-induced vibration of offshore structures. An isolation cone system is designed based on the isolation principle and applied to the offshore platform in the Bohai Sea, China. The measured data indicate the effect of reducing the ice-induced vibration response of the offshore platform structure. Meanwhile, the structural design of the isolation cone system can provide a reference for the vibration reduction design of bridges or buildings. In addition, the isolation cone system structure can be further optimized and used in the field of mechanical engineering.
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Data Availability Statement
The data used to support the findings of this study are available from the corresponding author upon request.
Acknowledgments
The support of the National Natural Science Foundation of China (51679033) is much appreciated. The authors are grateful to the China National Offshore Oil Corporation (CNOOC) for their support of the field tests. The authors are also grateful to the anonymous reviewers for their critical review and valuable suggestions for improving the manuscript.
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Information & Authors
Information
Published In
Journal of Cold Regions Engineering
Volume 37 • Issue 4 • December 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Dec 18, 2020
Accepted: Jan 26, 2023
Published online: Jul 17, 2023
Published in print: Dec 1, 2023
Discussion open until: Dec 17, 2023
ASCE Technical Topics:
- Base isolation
- Coasts, oceans, ports, and waterways engineering
- Cold regions engineering
- Continuum mechanics
- Dynamics (solid mechanics)
- Earthquake engineering
- Engineering fundamentals
- Engineering mechanics
- Field tests
- Geotechnical engineering
- Geotechnical investigation
- Hydraulic engineering
- Hydraulic structures
- Ice
- Mooring
- Motion (dynamics)
- Ocean engineering
- Offshore platforms
- Offshore structures
- Penetration tests
- Ports and harbors
- Seismic design
- Solid mechanics
- Tests (by type)
- Vibration
- Water and water resources
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