Abstract A code is developed to study the mooring tensions on a line with an embedded segment considered, based on lumped mass method. The accuracy of this code is validated by published results. The influence of soil-chain interaction on the static and dynamic behaviour of a 1500 m mooring line is studied under two operational situations: shallow embedded taut mooring line and deep embedded semi-taut mooring line. The shallow case has an embedded depth setting as 10 m under seafloor, while the embedded depth is 20 m for deep water. To study the influence of soil on mooring dynamics, three simplified cases without soil force considered are investigated and the results are compared with the dynamics of embedded mooring. These three cases include: i) Case MA has the same spread distance to embedded mooring anchored on seafloor; ii) Case MB is anchored on seafloor and it has the same pretension with embedded mooring; iii) Case MC is anchored to the same point to the embedded mooring but the soil force is not considered. Furthermore, the effects of effective width parameters of tangential and bearing soil resistance on mooring dynamics are also discussed. In this work, three different oscillations are forced on fairlead to study the mooring dynamics, which are low frequency oscillation, hybrid oscillation (low frequency and wave frequency) and wave frequency oscillation.

中文翻译：

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嵌入链段的超深水系泊线动力学

摘要 基于集中质量法，开发了一个研究带有嵌入段的绳索上的系泊张力的程序。此代码的准确性由已发布的结果验证。研究了浅埋拉紧系泊缆和深埋半拉紧系泊缆两种作业情况下土链相互作用对1500 m系泊缆静、动力行为的影响。浅案例的埋深设置为海底下10 m，而深水的埋深设置为20 m。为了研究土壤对系泊动力学的影响，研究了三种不考虑土壤力的简化情况，并将结果与​​嵌入式系泊动力学进行了比较。这三种情况包括： i) Case MA 与锚定在海底的嵌入式系泊具有相同的扩展距离；ii) Case MB 锚定在海底，与嵌入式系泊具有相同的预紧力；iii) 案例 MC 锚定到嵌入式系泊的同一点，但不考虑土壤力。此外，还讨论了切向和承载土阻力的有效宽度参数对系泊动力学的影响。在这项工作中，在导缆器上施加三种不同的振荡来研究系泊动力学，它们是低频振荡、混合振荡（低频和波频）和波频振荡。还讨论了切向和承载土阻力的有效宽度参数对系泊动力学的影响。在这项工作中，在导缆器上施加三种不同的振荡来研究系泊动力学，它们是低频振荡、混合振荡（低频和波频）和波频振荡。还讨论了切向和承载土阻力的有效宽度参数对系泊动力学的影响。在这项工作中，在导缆器上施加三种不同的振荡来研究系泊动力学，它们是低频振荡、混合振荡（低频和波频）和波频振荡。