筒基平台气浮拖航倾斜角模型试验

Experimental Research on Tilt Angle of Air Cushion Supported Bucket Foundation Platform

以锦州9-3筒型基础系缆平台为对象,在拖航速度、筒位置以及平台吃水深度一定的条件下,通过模型试验测定了筒型基础平台以不同倾斜角度随浪与顶浪拖航时的平台运动加速度、筒内气压力、筒底水压力以及拖缆力,并对试验数据进行比较分析,用于研究倾斜角对筒型基础平台随浪与顶浪拖航时基本力学参数的影响分析.试验结果表明,设置一定的倾斜角度,可明显降低筒型基础平台拖航时的摇摆以及升沉运动的幅度,且随浪拖航效果要优于顶浪拖航效果;采用设置倾斜角度的方法来提高筒型基础平台的拖航稳性是以显著增大拖缆力为代价的.

Under the conditions of a certain towing velocity, position of the bucket and draught of the platform, model tests were conducted on a 1 ： 20 scaled model of Jinzhou 9-3 bucket foundation platform. The acceleration, the internal air pressure, the bottom water pressure of the bucket and towing power of the platform were determined in the towing of the bucket foundation platform with different tilt angles. The aim of this paper was to examine in detail the effect of tilt angle on basic mechanical parameters of the bucket foundation platform during towing in following and head waves by comparing the test data. Setting a certain tilt angle can visibly reduce the dynamic response of the heave and pitch motions, and the response amplitude of towing with tilt angle in following waves is less than that in head waves. The results show that introducing tilt angle into the towing of the bucket foundation platform improves the stability, while saliently increasing the towing power.