双联挖泥船在宽水域施工中的共振分析

Resonance Analysis of Double Dredgers on Wide Waters

近代双联挖泥船在河湖与近海等宽水域中疏浚施工作业时,通常会遭遇风成波浪的强力振动,从而存在作业船只与水面风成波浪发生共振的可能性,客观上存在施工作业风险.为避免这种风险,文章针对水面重力线性波,利用理想流体的势流理论进行理论分析,得出重力线性波波动频率的计算公式,并根据作业环境条件进行具体的频率计算,与双联挖泥船的固有频率进行比较,得出施工安全的结论.

Strong vibration caused by waves is quiet common when modern double dredgers operate on wide waters or coast, resulting in resonance risk between constructing ships and wind waves. The fluctuation frequency formula of gravity linear waves is talked about in this article, based on the analysis of gravity linear waves in water and the potential flow theory of ideal fluid. The particular frequency computing approach is also detailed according to real working environment, and the security of construction can be ensured after the comparison of the inherent frequency of double dredgers with the fluctuation frequency of gravity linear waves.