系缆龙须角对筒型基础拖航影响试验

Impact of Mooring Asparagus Angle on Towing of Ocean Platform with Bucket Foundation

系缆龙须角是影响气浮筒型基础拖航的主要因素之一。通过模型试验对顺浪拖航时结构在横向、纵向以及垂向振荡的加速度、筒内气压力和水压力以及拖缆力进行测量。试验结果表明:拖航加速度随着系缆龙须角从0°增大到90°呈先减小后增大的趋势;龙须角为0°时,拖航的加速度、筒内气压力和水压力以及拖缆力变化均明显大于有角度拖航;拖缆力呈脉冲变化,且在45°时取得较小值。因此对于该结构的拖航,为了保证在拖航中既具有较小的拖缆力,又具有较小的横向和垂向振荡,建议选取系缆龙须角为45°。

The mooring asparagus anglis one of the main factors which affect the towing of air.floating bucket foundations. The accelerations of longitudinal, lateral, vertical acceleration, the internal air pressure and water pressure of the bucket and the tension of towing are determined by towing in following wave through model test. The test results show that the accelerations increase firstly, and then decrease with the increase of mooring asparagus angle from zero degree to 90 degree; when the asparagus angle is zero degree, the change of acceleration, internal air pressure, water pressure and the change of the asparagus force are significantly larger than the asparagus angle is not zero; The mooring force changes with pulse and is relatively smaller at 45 degree angle; in order to obtain the smaller tension and vibration in towing, the selected mooring asparagus angles of his platform is 45 degree.