| Title |
Long-Term Measurement of Static Strains of Jacket Type Offshore Structure under Severe Tidal Current Environments |
| Authors |
이진학(Yi, Jin-Hak) ; 박진순(Park, Jin-Soon) ; 박준석(Park, Jun-Seok) ; 이광수(Lee, Kwang-Soo) |
| DOI |
https://doi.org/10.12652/Ksce.2012.32.6A.389 |
| Keywords |
조류발전소 재킷 구조물;변형률 장기 계측;시공 중 및 운영 중 계측;신경망 모델링;조석 영향 tidal current power plant jacket structure;strain long-term measurement;measurements in construction and operation;neural network modeling;tidal effects |
| Abstract |
In this study, structural strain responses of the jacket-type Uldolmok tidal current power plant structure under severe tidal environments were measured and analyzed using long-term measurement system during construction and also operation. It was observed that there were significant changes in strain responses at the steps of jacket lifting, block loading, pile ejection and insertion. Strains due to dead loads and tidal loads were analyzed before and after removal of a jacket leg, and it was also found that the strains due to dead load were much significantly changed after jacket leg removal. From the measurement data during operation, it was found that strain responses were fluctuated with M2 and M4 tidal periods and also relatively short period of about 10 min due to the peculiar tidal characteristics in the Uldolmok strait. Finally, the neural network-based non-parametric estimation models were investigated to build up the signal-based structural damage monitoring system. |