大型海洋平台上部组块起升方案设计关键技术研究

发布时间：2018-05-27 02:26

本文选题：半潜式平台 + 张力腿平台　；参考：《大连理工大学》2016年硕士论文

【摘要】：深海能源的不断开发和利用,促进了海洋平台的大型化,也增加了海洋平台的设计和建造难度。海洋平台的大型化,不仅增加了上部组块的体积和重量,还增加了上部组块的合拢作业高度。因此,在大型海洋平台建造合拢的过程中,如何安全高效地完成上部组块起升过程,成为设计和建造单位研究的重点和难点。本文围绕大型海洋平台建造合拢中上部组块的起升技术,调研了近年来国内外半潜式平台、张力腿平台、导管架平台和特殊海洋工程平台等大型海洋平台上部组块起升的相关案例。对大型海洋平台上部组块起升的提升和顶升关键技术进行研究。分别从起升设备、起升能力和起升过程等方面分析了提升和顶升的技术特点。通过对起升重量、起升高度、安全性和经济性等因素进行比较,总结出提升和顶升的技术优势,并提出上部组块起升作业的安全系数,以供大型海洋平台合拢选择合适的起升设备。本文还探讨了大型海洋平台上部组块提升和顶升过程的技术特点和发展方向,为大型海洋平台建造合拢提供可靠的理论基础和参考依据。本文对如何合理确定起升方案布置空间,以及合理选取上部组块起升点做了详细阐述,提出了起升载荷的简化模型和简化计算方法,对提升技术的提升塔架形式进行了探讨和优劣分析,并通过实际案例对所提出的起升方案设计方法进行了验证。针对起升施工方案的安全评估问题,本文从风险的角度出发,将综合安全评估的方法应用到起升技术中,针对施工具体流程提出施工中可能存在的风险及相应的解决措施,可以有效提高施工过程的安全性。同时,将风险分析的方法应用到对多方案的评价中,提出了一种具有重要参考价值的起升方案安全评价方法。针对大型海洋平台上部组块起升技术方案设计的多样性问题,本文将模糊综合评判的方法应用到上部组块起升方案的对比分析中,对方案的技术、经济和安全三个方面进行了综合分析,并采用层次分析法分析了各项指标的权重,根据起升方案的特点提出了评价指标并给出了相应的计算方法,为起升方案的设计和评价提供了理论依据；通过VB .NET开发了针对起升方案的综合评价程序,方便方案评价者使用。
[Abstract]:The continuous development and utilization of deep sea energy not only promote the large-scale of offshore platform, but also increase the difficulty of design and construction of offshore platform. The large scale of the offshore platform not only increases the volume and weight of the upper block, but also increases the closing operation height of the upper block. Therefore, in the process of building and closing large offshore platforms, how to safely and efficiently complete the lifting process of upper blocks has become the focus and difficulty in the research of design and construction units. This paper focuses on the hoisting technology of the large offshore platform to build the closed upper and middle blocks, and investigates the semi-submersible platform and the tension leg platform at home and abroad in recent years. Jacket platform and special offshore engineering platform and other large offshore platform upper block lifting cases. The key technologies of lifting and lifting of the upper block of large offshore platform are studied. The technical characteristics of lifting and lifting are analyzed from the aspects of lifting equipment, lifting capacity and lifting process respectively. By comparing the factors such as lifting weight, lifting height, safety and economy, the technical advantages of lifting and lifting are summarized, and the safety factor of lifting operation of upper block is put forward. For large offshore platform closure selection of suitable lifting equipment. This paper also discusses the technical characteristics and development direction of the uplift and uplift process of the upper block of the large offshore platform, which provides a reliable theoretical basis and reference basis for the construction and closure of the large offshore platform. This paper expounds in detail how to reasonably determine the layout space of the lifting scheme and how to select the lifting point of the upper block reasonably, and puts forward a simplified model and a simplified calculation method for the lifting load. The lifting tower form of lifting technology is discussed and analyzed, and the design method of lifting scheme is verified by practical cases. Aiming at the safety evaluation of lifting construction scheme, this paper applies the method of comprehensive safety assessment to hoisting technology from the point of view of risk, and puts forward the possible risks in construction and the corresponding solving measures in view of the concrete construction process. It can effectively improve the safety of the construction process. At the same time, the method of risk analysis is applied to the evaluation of multiple schemes, and a safety evaluation method of lifting scheme with important reference value is proposed. In view of the diversity of the design of the lifting scheme for the upper block of the large offshore platform, the fuzzy comprehensive evaluation method is applied to the comparative analysis of the lifting scheme of the upper block, and the technology of the scheme is discussed. The economic and security aspects are comprehensively analyzed, and the weight of each index is analyzed by AHP. According to the characteristics of the lifting scheme, the evaluation index is put forward and the corresponding calculation method is given. It provides a theoretical basis for the design and evaluation of the lifting scheme, and develops a comprehensive evaluation program for the lifting scheme through VB .NET, which is convenient for the evaluators of the scheme.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U674.38

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