箱-板组合浮式防波堤水动力性能试验研究

Experimental Study of Hydrodynamic Analysis for the Composite Pontoon-Plate Floating Breakwater

通过物理模型试验,开展规则波作用下箱-板组合浮式防波堤的水动力性能研究。将结构宽度与波长的相对宽度W/L作为参变量,分析了浮箱入水深度、底板与浮箱间距以及底板长度等因素对结构运动响应、两侧锚链系泊力以及透射系数等主要因素对结构水动力性的影响规律。试验结果表明:(1)增大浮箱入水深度,可以更好的减小模型运动响应;(2)增加底板与浮箱的间距,可以更好地减小锚链系泊力;(3)底板长度对垂荡运动幅值影响最大,而对横摇和纵摇影响较小;(4)两种情况下,都可以减小波浪的透射系数。

The hydrodynamic performance of the new composite pontoon-plate floating breakwater with different relative width W/L subjected to regular waves is studied using physical model tests.The structural response characteristics influence rule of main factors is analyzed such as relative draft, spacing between pontoon and plate and the length of plate.The structural response characteristics include motions amplitude and mooring force.The experimental results show that as followed:(1) Increasing the draft can better reduce motion response;(2) Increasing the pontoon-plate spacing can better reduce the mooring force;(3) The variation of the plate length has the greatest influence on the heave motion amplitude, but the influence on roll and pitch motion is smaller;(4) In both cases of increasing the draft-plate length, the wave transmission coefficient of the breakwater can be reduced.