船舶
船舶
선박
SHIP & BOAT
2014年
5期
46-49
,共4页
许建平%吴剑国%彭文科%洪英%蒲映超
許建平%吳劍國%彭文科%洪英%蒲映超
허건평%오검국%팽문과%홍영%포영초
剩余强度%可靠度%超大型油船
剩餘彊度%可靠度%超大型油船
잉여강도%가고도%초대형유선
residual strength%reliability%VLCC
根据MARPOL公约,对CSR-H规定的破口范围进行概率分析。以一艘超大型油船为例,分别统计了单舱破损后各个肋位的静水弯矩概率特征和基于全球海况谱的一周波浪弯矩预报值;基于Smith法的船体梁极限弯矩计算软件,分别统计了各舱破损后极限弯矩的概率特征;采用改进一次二阶矩法,计算了各舱破损后的剩余强度可靠度。研究结果表明:机舱和首尾货舱发生破损后整船失效概率较低,中部货舱区域发生破损后整船失效概率较大,尤其在静水中垂破损工况下最危险,失效概率在10-2量级。
根據MARPOL公約,對CSR-H規定的破口範圍進行概率分析。以一艘超大型油船為例,分彆統計瞭單艙破損後各箇肋位的靜水彎矩概率特徵和基于全毬海況譜的一週波浪彎矩預報值;基于Smith法的船體樑極限彎矩計算軟件,分彆統計瞭各艙破損後極限彎矩的概率特徵;採用改進一次二階矩法,計算瞭各艙破損後的剩餘彊度可靠度。研究結果錶明:機艙和首尾貨艙髮生破損後整船失效概率較低,中部貨艙區域髮生破損後整船失效概率較大,尤其在靜水中垂破損工況下最危險,失效概率在10-2量級。
근거MARPOL공약,대CSR-H규정적파구범위진행개솔분석。이일소초대형유선위례,분별통계료단창파손후각개륵위적정수만구개솔특정화기우전구해황보적일주파랑만구예보치;기우Smith법적선체량겁한만구계산연건,분별통계료각창파손후겁한만구적개솔특정;채용개진일차이계구법,계산료각창파손후적잉여강도가고도。연구결과표명:궤창화수미화창발생파손후정선실효개솔교저,중부화창구역발생파손후정선실효개솔교대,우기재정수중수파손공황하최위험,실효개솔재10-2량급。
According to MARPOL Convention, this paper analyzes the probability of the damage extent which is specified by CSR-H rules. Taking a VLCC as an example, it adds up its probability characteristics of still water bending moment of each frame for a single damaged cabin, and calculates the predicted value of wave bending moment during a week based on global sea spectrum. It also counts the probability characteristics of the ultimate bending moment for the each damaged cabin by a software for the calculation of ship beam ultimate bending moment with Smith method, and calculates the reliability of its residual strength by the improved FOSM method. The analysis results show that the failure probability for the whole tanker is small when the engine room and fore and aft cargo hold are damaged, however, it becomes bigger when the central cargo hold area is damaged. In particular, the working condition of the sagging damage in still water is most dangerous with a failure probability in order of 10-2.