【摘要】 自升式钻井平台就位下桩作业过程中,由于桩腿下放长度变化范围很大,对平台摇荡性能影响亦较大.为了能在设计阶段预报下桩过程中的横摇性能,确保平台安全作业,本文提出一种可为工程实际所接受的简化方法,用来估算下桩过程中横摇角幅值随着桩腿下放长度的变化.以“40自升式钻井平台”为例进行了计算,计算结果与模型试验数据作了比较,其符合程度是令人满意的.更多还原

【Abstract】 In the leg lowering process of the jackup drill rig, the considerable change of the leg length has an effect on the motion characteristics of the ocean platform.In order to predict rolling characteristics at the early design stage to ensure safety, this paper tries to develop a simplified method for practical use, with which the roll angle amplitude variation with the leg length lowering can be estimated.Jackup Drill Rig40 is taken as an example, the calculation results from the developed method are quite close to that from model experiments.更多还原