船舶力学
船舶力學
선박역학
JOURNAL OF SHIP MECHANICS
2015年
5期
518-525
,共8页
深水悬链线%分段外推%混合模型试验%截断优化设计
深水懸鏈線%分段外推%混閤模型試驗%截斷優化設計
심수현련선%분단외추%혼합모형시험%절단우화설계
deepwater catenary mooring system%piecewise extrapolating method%hybrid model test
工程中,常用的深水悬链锚泊线通常是由顶部锚链、中部钢索和底部锚链三段复合而成。该文采用分段外推的数值解法,考虑锚泊线所受的重力、张力、流力以及锚泊线的弹性伸长,利用黄金分割算法求解锚泊线顶端张力对应的顶张角,对其进行静力特性分析。基于混合模型试验方法应用,考虑锚泊系统静力特性相似,采用遗传算法编制开发等效截断水深系统优化设计程序。以一座工作水深为1500 m的深水半潜式平台为例,对其悬链式锚泊系统在700 m水深处进行等效截断优化设计计算,为下一步进行混合模型试验提供参考。
工程中,常用的深水懸鏈錨泊線通常是由頂部錨鏈、中部鋼索和底部錨鏈三段複閤而成。該文採用分段外推的數值解法,攷慮錨泊線所受的重力、張力、流力以及錨泊線的彈性伸長,利用黃金分割算法求解錨泊線頂耑張力對應的頂張角,對其進行靜力特性分析。基于混閤模型試驗方法應用,攷慮錨泊繫統靜力特性相似,採用遺傳算法編製開髮等效截斷水深繫統優化設計程序。以一座工作水深為1500 m的深水半潛式平檯為例,對其懸鏈式錨泊繫統在700 m水深處進行等效截斷優化設計計算,為下一步進行混閤模型試驗提供參攷。
공정중,상용적심수현련묘박선통상시유정부묘련、중부강색화저부묘련삼단복합이성。해문채용분단외추적수치해법,고필묘박선소수적중력、장력、류력이급묘박선적탄성신장,이용황금분할산법구해묘박선정단장력대응적정장각,대기진행정력특성분석。기우혼합모형시험방법응용,고필묘박계통정력특성상사,채용유전산법편제개발등효절단수심계통우화설계정서。이일좌공작수심위1500 m적심수반잠식평태위례,대기현련식묘박계통재700 m수심처진행등효절단우화설계계산,위하일보진행혼합모형시험제공삼고。
Used in deepwater catenary mooring systems, the multi-component mooring lines are usually made up of three wire ropes and chains of different buoyancy unit weight, stiffness and length. Considering the grav-ity, tension, current force and mooring line extension, the piecewise extrapolating method is employed to the static analysis of the multi-component mooring line and the golden section method is used to find out the top angle of the mooring line. An optimized designing program is developed based on genetic algorithm con-sidering the similarity of static characters for hybrid model test. Taking the catenary mooring system used for some semi-submersible platform of 1 500 m water depths for example, the equivalent truncated mooring system used in 700 m water depths is designed, which can provide references for the following processes in hybrid model test.