【作者】 李晓； 何炎平；

【Author】 LI Xiao, HE Yan-ping, TAN Jia-hua (School of Naval Architecture, Ocean and Civil Engineering , Shanghai Jiaotong University,Shanghai 200030,China)

【机构】 上海交通大学船舶海洋与建筑工程学院；

【摘要】 提出了两种不同的压载舱布置方案,对某FPSO在三种不同的货油装载状态及各种初始倾斜情况时, 各压载舱独立破损后的破舱稳性进行了计算研究,比较分析了FPSO压载舱的布置对其破舱稳性的影响。结果发现:在任何情况下,不论舱室大小,与首尾压载舱室破损相比,边压载舱破损将会导致更低的稳性范围;边压载舱之间或首尾压载舱之间,舱室越大,破损后,破舱稳性范围越小。进一步对边压载舱的研究发现:当舱容基本相同时,导致稳性最差的舱室与初始纵倾和压载状态有很大关系。如无纵倾、货油装载量较小时,离首部最近的边压载舱破损将出现最低的稳性范围;货油装载量很大时,将出现在离尾部最近的边压载舱。更多还原

【Abstract】 Two difference layouts of water ballast tanks are presented in the paper. A FPSO is investigated in three different oil loading conditions with various initial heel and/or trim. Each of the pent ballast tanks is damaged separately so that the one causing the lowest range of stability could be determined. And then the effects of the ballast tanks layout on damaged stability of FPSO is analyzed contrastively. It is found that damaged side ballast tank, no matter big or small, can cause the lower range of stability than one at the bow and at the stern can. However, between the two kinds of ballast tanks, the bigger its capacity is, after being damaged separately, the lower range of stability will be raised. Further study in the side ballast tanks shows that when they have the same capacities, the ballast tank which can cause the lowest range of stability has much to do with the initial trim and the load conditions. For example, with no initial trim, for the relatively minor oil storage loaded condition, the side ballast tank closest to the bow has the lowest range of stability, while the one closest to the stern has the lowest range of stability for the comparatively full loaded condition.更多还原