船舶撞击高架拦阻系统后的位移计算及与试验结果的比较

为了求解船舶撞击高架拦阻系统后的位移，文章以能量守恒定律为基本原理，即重力锚做功与船舶阻力做功之和近似等于船舶初动能，通过编写迭代计算程序，对船舶撞击高架拦阻系统后的运动情况进行了研究。并将理论计算结果与试验数据进行了比较分析。结果表明：船舶撞击高架拦阻系统后位移的理论计算值与实测值间的误差在正负30%以内；船舶正碰撞拦阻系统跨中位置时，位移最大，且位移随着拦阻系统跨度的增大而增大。该理论计算方法及相关结论可以为高架拦阻系统的设计提供重要参考。

Movement calculation for ship colliding with the overhead block system and comparison with test measurements

In order to calculate the movements of the ship and the anchors when the ship colliding with the moored overhead block system, by writing the iterative calculating codes, studies on the distances of the ship and the mooring anchors are carried out based on the basic law of conservation of energy, where the work done by the gravity anchors and the water resistance approximately equals to the initial energy of the ship. Through the comparisons and analysis between the numerical results and test measurements, it can be found that the movement errors between them are between the minus and plus thirty percentages. Besides, the dis-tances get the maxima when the ship collides at the middle of the system, and the movements become big-ger with the increase of the span of the overhead block system. This method of calculation and the relat-ed conclusions can provide references for the design of the overhead block system.