심한 조류 환경 아래에서의 재킷식 해양구조물의 동적 및 정적 응답

Title
심한 조류 환경 아래에서의 재킷식 해양구조물의 동적 및 정적 응답
Alternative Title
Dynamic and Static Responses for Jacket-type Offshore Structure under Severe Tidal Environment
Author(s)
이진학; 박진순; 이광수; 백원대
KIOST Author(s)
Yi, Jin Hak(이진학)Baek, Won Dae(백원대)
Publication Year
2013-06-03
Abstract
In this study, long-term structural monitoring data such as acceleration, dynamic tilt angle, and static strain for a jacket-type offshore structure are presented. The target structure is a supporting jacket for a tidal current power plant in Uldolmok strait in Korea and it is in operation under severe tidal environment. Due to high-level of tidal current loading and difficulties in construction, it is very important to monitor and maintain structural responses under certain upper and lower acceptance levels. For this purpose, the long-term structural health monitoring system was installed and dynamic and static responses have been being measured after installation. Dynamic responses can give us important information on modal properties such as natural frequencies and modal damping ratios which are related to the structural changes due to damage. The static strain is very important to detect structural changes because the tidal loading is predictable and periodic with a strong bi-directionality, and if there is a significant structural change, it may cause changes in static strain data. However, the environmental effects on modal properties and static strain should be first investigated for successful monitoring by use of dynamic modal properties and strains. Hence, these response quantities for the last two years have been investigated with environmental changes such as temperature and tidal changes, and it is foundin Uldolmok strait in Korea and it is in operation under severe tidal environment. Due to high-level of tidal current loading and difficulties in construction, it is very important to monitor and maintain structural responses under certain upper and lower acceptance levels. For this purpose, the long-term structural health monitoring system was installed and dynamic and static responses have been being measured after installation. Dynamic responses can give us important information on modal properties such as natural frequencies and modal damping ratios which are related to the structural changes due to damage. The static strain is very important to detect structural changes because the tidal loading is predictable and periodic with a strong bi-directionality, and if there is a significant structural change, it may cause changes in static strain data. However, the environmental effects on modal properties and static strain should be first investigated for successful monitoring by use of dynamic modal properties and strains. Hence, these response quantities for the last two years have been investigated with environmental changes such as temperature and tidal changes, and it is found
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/26939
Bibliographic Citation
Asian Pacific Vibration Conference, pp.120 - 124, 2013
Publisher
대한기계학회,
Type
Conference
Language
English
Publisher
대한기계학회,
Related Researcher
Research Interests

Ocean Energy-Tidal Current Energy Converter System,Infrastructure Management-Structural Health Monitoring,Offshore Wind,해양에너지-조류발전시스템,시설물 유지관리-구조건전성 평가,해상풍력

Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse