振动与冲击
振動與遲擊
진동여충격
JOURNAL OF VIBRATION AND SHOCK
2014年
1期
119-124
,共6页
宋磊建%付世晓%陈希恰%郭宏%屈衍
宋磊建%付世曉%陳希恰%郭宏%屈衍
송뢰건%부세효%진희흡%곽굉%굴연
深海脐带缆%悬链线%缓波形%有效张力%弯曲曲率
深海臍帶纜%懸鏈線%緩波形%有效張力%彎麯麯率
심해제대람%현련선%완파형%유효장력%만곡곡솔
deepwater umbilical%free hanging catenary%lazy-wave%effective tension%curvature
给出悬链线和缓波形理论公式的基础上,对某一深海脐带缆进行悬链线布局和缓波形布局两种不同布局形式的选型设计研究,计算得到脐带缆在两种布局下的静态和动态响应,及其有效张力和弯曲曲率的分布特性。结果显示有效张力的最大值都发生在悬链线布局和缓波形布局的顶部悬挂点,而弯曲曲率的最大值发生在悬链线布局的触地点和缓波形布局的上升段末端;缓波形布局在减小有效张力的同时还减小顶部浮体和波浪运动对脐带缆的动态干扰。
給齣懸鏈線和緩波形理論公式的基礎上,對某一深海臍帶纜進行懸鏈線佈跼和緩波形佈跼兩種不同佈跼形式的選型設計研究,計算得到臍帶纜在兩種佈跼下的靜態和動態響應,及其有效張力和彎麯麯率的分佈特性。結果顯示有效張力的最大值都髮生在懸鏈線佈跼和緩波形佈跼的頂部懸掛點,而彎麯麯率的最大值髮生在懸鏈線佈跼的觸地點和緩波形佈跼的上升段末耑;緩波形佈跼在減小有效張力的同時還減小頂部浮體和波浪運動對臍帶纜的動態榦擾。
급출현련선화완파형이론공식적기출상,대모일심해제대람진행현련선포국화완파형포국량충불동포국형식적선형설계연구,계산득도제대람재량충포국하적정태화동태향응,급기유효장력화만곡곡솔적분포특성。결과현시유효장력적최대치도발생재현련선포국화완파형포국적정부현괘점,이만곡곡솔적최대치발생재현련선포국적촉지점화완파형포국적상승단말단;완파형포국재감소유효장력적동시환감소정부부체화파랑운동대제대람적동태간우。
A free hanging catenary shape and a lazy-wave shape were designed for some deepwater umbilical based on the theoretical equations of the two kinds of shapes.The static and dynamic responses of the umbilical under both shapes were calculated,and the distribution characteristics of effective tension and bending curvature were analysed.The results show that the maximum effective tensions all happen at the top hanging points of both shapes,but the maximum curvatures happen at the touchdown point (TDP)of the free hanging catenary shape and the lift section's endpoint of the lazy-wave shape.In addition,the lazy-wave shape can reduce the effective tension and the dynamic interference to umbilical caused by the motion of top float and wave.