应急型浮式防波堤运动特性和锚链力试验研究

Experimental study on motion characteristics and mooring forces of emergent type floating breakwater

通过物理模型试验,在规则波作用条件下研究了应急型浮式防波堤的运动量和锚链力与相对宽度、波高及水深等影响因素的变化关系。结果表明:波高是影响浮体运动量最敏感的因素,浮体的横荡、升沉与横摇随着波高的增大而增大;浮体的垂荡和横荡随着相对宽度的增大而减小,浮体横摇值则随着相对宽度的减小而减小。在规则波作用下,浮式防波堤的锚链力迎浪侧大于背浪侧,在各种影响因素中对波高的敏感度最高,规律性较明显,锚链力与波高成正比关系,随着波高的增大锚链力也随之增大。锚链受力随着相对宽度的减小而增大,波高1.5 m时锚链力随着相对入水深度的增大而增大,随着波高的增大,模型相对入水深度对锚链力的影响越来越小。

Through physical model test, the relationship between the motions and mooring forces with relative width, wave height and water height and so on were studied under the condition of regular wave action. The results show that the wave height is the most sensitive factor affecting the motion of the pontoon, the sway, heave and roll of the pontoon increase with the increase of the wave height. The heave and sway of the pontoon decreases with the increase of the relative width, while the rolling value of the pontoon decrease with the decrease of the relative width. Under the action of regular waves, the mooring forces of floating breakwater is larger on the front side than on the back side. The sensitivity of the mooring force to wave height is the highest among various factors, and the regularity is obvious. The mooring forces is proportional to wave height, and it increases with the increase of wave height. The mooring force increases with the decrease of the relative width, and increases with the increase of relative water depth when the wave height is 1.5 m. The influence of relative water depth to mooring forces is insensitive with the wave height increase.