CAJ | 학술논문

以某座半潜式平台为研究对象，分别对其配置两种具有相同静恢复力特性的锚泊系统，其中锚泊线组成分别为钢链-钢索-钢链和钢链-聚酯纤维系缆-钢链。首先建立半潜式平台及其锚泊系统的耦合数值计算模型，以中国南海S4海域的海况条件作为环境荷载，计算锚泊线在各短期海况下的张力时程曲线；然后采用雨流法对其计数得到对应于各短期海况条件下的疲劳载荷谱；最后根据Miner线性累积损伤模型，对两种锚泊系统在长期海况条件下的疲劳损伤进行比较计算。
이모좌반잠식평태위연구대상，분별대기배치량충구유상동정회복력특성적묘박계통，기중묘박선조성분별위강련-강색-강련화강련-취지섬유계람-강련。수선건립반잠식평태급기묘박계통적우합수치계산모형，이중국남해S4해역적해황조건작위배경하재，계산묘박선재각단기해황하적장력시정곡선；연후채용우류법대기계수득도대응우각단기해황조건하적피로재하보；최후근거Miner선성루적손상모형，대량충묘박계통재장기해황조건하적피로손상진행비교계산。
Two types of mooring systems with similar static restoring stiffness,whose mooring lines consist of chain-wire-chain and chain-polyester-chain respectively, were adopted to be equiped in a semi-submersible platform for comparative investigation.A numerical model considering the coupling between the semi-submersible platform and its mooring system was built.The sea states in South China S4 area were taken as the ocean environmental loads,and the time series of mooring tension variation were calculated.Then,the rain flow counting method was employed to obtain the fatigue load spectrum in each short-term sea state.Finally,the model according to the Miner linear cumulative law was used to calculate the fatigue damage of the two types of mooring systems in long-term sea state.