船舶
船舶
선박
SHIP & BOAT
2014年
1期
49-52
,共4页
固有周期%结构强度%拖航状态%有限元法
固有週期%結構彊度%拖航狀態%有限元法
고유주기%결구강도%타항상태%유한원법
natural period%structural strength%towing condition%finite element method
为实现拖航状态的自升式平台桩腿强度分析，借助DNV系列软件包，以频率响应分析的方法对自升式海洋平台拖航状态时的横摇和纵摇固有周期进行了计算；以频响分析中各相应固有周期的RAO值和相关规范规定的6度单幅横摇或纵摇值确定拖航的计算波高，并进行拖航状态时的准静态结构分析；最后采用API-AISC-WSD软件来完成桩腿自身结构的屈服和屈曲强度校核，从而为自升式平台确定恰当的桩腿系固和拖航方案提供依据。
為實現拖航狀態的自升式平檯樁腿彊度分析，藉助DNV繫列軟件包，以頻率響應分析的方法對自升式海洋平檯拖航狀態時的橫搖和縱搖固有週期進行瞭計算；以頻響分析中各相應固有週期的RAO值和相關規範規定的6度單幅橫搖或縱搖值確定拖航的計算波高，併進行拖航狀態時的準靜態結構分析；最後採用API-AISC-WSD軟件來完成樁腿自身結構的屈服和屈麯彊度校覈，從而為自升式平檯確定恰噹的樁腿繫固和拖航方案提供依據。
위실현타항상태적자승식평태장퇴강도분석，차조DNV계렬연건포，이빈솔향응분석적방법대자승식해양평태타항상태시적횡요화종요고유주기진행료계산；이빈향분석중각상응고유주기적RAO치화상관규범규정적6도단폭횡요혹종요치학정타항적계산파고，병진행타항상태시적준정태결구분석；최후채용API-AISC-WSD연건래완성장퇴자신결구적굴복화굴곡강도교핵，종이위자승식평태학정흡당적장퇴계고화타항방안제공의거。
This paper calculates the roll and pitch natural period of the self-elevating drilling unit legs in towing condition for the structural strength analysis of legs by frequency response analysis method via DNV software package. It also calculates the wave height by the RAO value of the strength analysis of the unit legs and the 6°single amplitude rolling and pitching value in the relevant regulations, and carries out the quasi-static structural analysis in the towing condition. Finally, it checks the yield and buckling structural strength of the unit legs by API-AISC-WSD, which provides the basis for the appropriate leg securing and towing scheme.
