【作者】 杜振煌；

【导师】 王言英；

【作者基本信息】 大连理工大学 ， 船舶与海洋结构物设计制造， 2004， 硕士

【摘要】 船舶管系设计与荷载计算研究是船舶与海洋平台的重要技术问题之一。本文通过介绍管系的一般设计方法和标准，以及海洋钻井平台的七个典型管系，来确定管系荷载种类并研究其计算方法。文中采用经典的水力计算方法和计算流体力学(CFD)方法来研究管线的内部流体荷载；采用材料力学和流体力学来研究管线的外部荷载；应用有限元方法来分析校核管线的强度。本文的目的是要综合考虑管线的各种荷载，更加合理地为管道系统及其支撑结构的设计提供基本数据，以保证管系的最优化设计和运行安全。 本文完成的主要工作如下： 1．探讨管系设计方法和介绍著名的美国石油学会(API)管系标准。依据海洋钻井平台的七张管系工作原理示意图，介绍各个管系所能实现的功能与所操作的要求。在满足管系工作要求的情况下，总结了管系设计的一般原则及设计步骤。 2．计算管线内部流体荷载，也就是管系的压力分布计算。对于某些边界变化剧烈的局部区域，应用计算流体力学(CFD)方法进行数值模拟计算，即应用k-ε湍流模型方法进行管系局部压力分布数值模拟计算。 3．计算风荷载考虑了多种因素，包括风压随高度变化而变化，管线结构的体型效应，重现期的调整及风振的影响。 4．采用材料力学的梁理论，应用力法分析方法，计算出热膨胀导致的推力和弯矩。 5．采用材料力学的梁理论，应用力法分析方法，研究支撑结构移动导致的管系外荷载重新分配规律，修正管系支撑结构的设计荷载。更多还原

【Abstract】 The investigation of ship pipeline system design and load calculation is one of the important technological problems for ship and marine platform. The load sorts of pipeline is determined and the method calculating the load is also studied, the general design method and standard of pipeline system and seven representative pipeline systems of marine drilling platform are introduced. The classical waterpower computing method and Computing Fluid Dynamics (CFD) method are adopted to study the fluid load of pipeline firstly. Then mechanics of materials and hydrodynamics are applied to study the outer load of pipeline system. Lastly the Finite Element Method (FEM) is applied to analysis and checking the strength of pipeline. Basic data could be provided much more reasonably to the design for pipeline and supporting structure to guarantee pipeline system optimization design most and run safely, after considering all kinds of loads synthetically.The main aspects of research work are as following:1. A pipeline design method is discussed and the famous American Petroleum Institute (API) pipeline standard is also introduced. According to seven pipeline work principle sketch maps of marine drilling platform, all achieved functions and operated requests of each pipeline system are introduced. Under satisfying the pipeline system work requests, the commonly principle and procedure of pipeline design are summarized.2. The fluid load in pipeline is calculated, that is calculating the pressure distribution of pipeline. The Computing Fluid Dynamics (CFD) method was applied to the numerical simulation calculation for some local region where the boundary changes acutely. The numerical simulation calculation of the local pressure distribution for pipeline was processed by applying the method of RANS equations with the k-e model.3. When calculating wind load, many factors are considered, including wind pressure variety along with altitude, bodily form effect of pipeline structures, adjustment of recurring period and influence of wind vibration.4. Trust force and bending moment result in heat expansion are calculated by adopting beam theory of mechanics of materials and applying force component analysis method.5. Adopting beam theory of mechanics of materials and applying force component analysis method, the rule that the outer load of pipeline result in pipeline supporting structure’s motion is renewedly distributed was studied and the design load of pipeline supporting structure was revised.更多还原