双驳载运不规则重大件货的波浪运动响应分析

Analysis of Motion Response of Two Barge Carrying Irregular Heavy Cargo in Wave

以双驳装载某大型桥梁主梁段拖航运输为例,采用JONSWAP谱描述相关拖航海域海况,基于水动力频域分析和波浪谱分析方法,分析双驳载运桥梁主梁段系统在波浪中的运动响应,对首尾驳船重心在波浪中的垂向运动响应和货物重心在波浪中的运动响应加速度进行短期预报。结果显示,采用双驳装载主梁段,并依据《海上拖航指南》进行绑扎系固的设计、校核,可以确保拖航安全。

Based on the hydrodynamic frequency domain analysis method and wave spectrum analysis method,the combination of two barges carrying a main segment of bridge was simulated to analyze its motion response in waves,as the wave was described by JONSWAP spectrum.The short-term predictions about the vertical motion of fore and aft barges,the acceleration of the center of gravity of goods were computed.As shown in the result,the securing and lashing of the combination was safe for towing according to the“Guidelines for Towage at Sea”.