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本文介绍了铺管状态计算的扩展的刚性悬练线方法与有限差分方法.前者通过反曲点与升离点的关系,将只可用于下凹段的刚性悬练线方法扩展到包括上凸段在内的 S 法作业时的全部管长,后者在差分方程及其迭代解过程中引入了不均匀分布流、海床弹性与海床倾斜等因素的影响,提出了四种解题模式以适应工程问题的各种提法。在差分法的基础上,研究了铺管作业参数之间的无因次关系,给出了无因次参数曲级,并在若干具体算例的基础上讨论了主要作业参数的影响。
In this paper, an extended rigid suspension line method and a finite difference method for calculating the state of pipe-laying are introduced. The former extends the method of rigid suspension line, which can be used only for the concave section, to include convex Section of the S method, including the total pipe length, the latter introduced in the difference equation and its iterative process of uneven distribution of flow, the seabed elasticity and seabed tilt and other factors, proposed four solution mode To adapt to various formulation of engineering problems. On the basis of the difference method, the dimensionless operation of pipelaying job parameters is studied. The dimensionless parameter level is given. And the influence of the main job parameters is discussed based on several specific examples.