导管架下水驳船摇臂运动研究  

Motion of rocker arms of jacket launch barge after launch operations

作　　者：徐慧[1] 黄衍顺[1] 李智博[1] 樊之夏[2] 袁汝华[2] 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]海洋石油工程股份有限公司,天津300452

出　　处：《海洋工程》2010年第2期90-94,共5页The Ocean Engineering

摘　　要：导管架下水驳船摇臂是安装在驳船尾部用于导管架滑移下水的过渡装置。分析导管架下水后,驳船、摇臂运动特点的基础上,建立描述导管架下水后驳船-摇臂耦合系统运动的变系数微分方程,给出基于改进的龙格库塔法的数值求解方法。以一艘3万吨下水驳船在1.6万吨导管架实施下水后摇臂翻转运动为实例,对导管架下水后驳船及摇臂翻转运动状态进行了计算,并将计算结果与水池试验结果进行了对比。讨论影响摇臂翻转运动的主要因素,提出导管架与摇臂完全脱离时刻,驳船的吃水、纵倾角度以及摇臂纵倾角度、摇臂重心纵向位置对摇臂能否自动翻转复位以及复位时摇臂角速度影响较大。The rocker arm on the jacket launch barge which is used for launch is a transition installation equipped at the stern.According to the characteristic of movement about barge and rocker arm,this paper establishes the coefficient differential equation which describes the movement of Barge-Rocker coupling system and puts forward a numerical method based on improved Runge-Kutta method.Then a 30000 ton jacket launch barge is taken as an example to compute the state of movement of launched barge and rocker arm,and the result is compared to that of the test.Furthermore,this paper discusses the main factors which affect the movement of rocker arm and presents the barge drawing,trim angle,trim angle of rocker arm and the longitudinal position of gravity that relatively greatly influence the rocker arm at the moment of jacket and rock completely separated.However,the rationality of this model should be tested further by tank test and real ship statistics.

关 键 词：导管架下水 导管架下水驳船 摇臂运动 时域分析 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]