海上石油平台的整体安装与动态定位系统

简要介绍海上石油平台的整体安装、动态定位系统及半潜重吊船"康盛口"轮承载BRE平台的安装过程。从中可以了解到具有DP功能的半潜重吊船在海上石油平台安装领域的独特魅力和功效。     

大型海洋平台整体建造技术的研究与应用

目前国内大型海洋平台由于受浮吊吊装能力的限制无法进行海上整体吊装就位,传统的建造方法是将平台分为几部分在陆上预制完毕在海中进行分片吊装拼接,这种建造工艺极大程度取决于海洋环境影响,不仅船机费用高,而且建造质量也难以提升.特别是胜利滩浅海区域根本就不能满足大型浮吊对工作水深的要求,因而也就无法利用浮吊进行吊装.为了解决这一技术难题,胜利油田胜利石油化工建设有限责任公司成功研究并应用了大型平台陆地整体预制与海上就位安装等一系列相关技术.本文将分别对平台建造临时支撑系统、陆上整体预制技术、有轨托载整体装船技术、海上打桩技术和海上就位技术等进行介绍.     

海上风电单桩基础风机整机安装施工安全管理分析

目前,海上风电场风电机组安装方式主要有2种:海上分体安装和海上整体安装,目前最为常见的海上风电安装方式是海上分体安装。降低海上风电场施工成本最直接的方法是改进吊装方案及相应设备,以利缩短工期。此外,考虑海上天气导致施工窗口少,应尽可能多地由陆上分担装配任务,海上整体安装应运而生。国华东台四期海上风电项目第16号机位风机安装是国内首例采用海上风电单桩基础风机整体吊装的施工工艺,通过对其海上施工过程的安全管理进行分析,重点从施工安全角度对风机整体安装施工工艺和FIS缓冲体系提出一些看法与建议,希望能给海上风电整体安装施工的安全管理和提高FIS缓冲体系拆装施工安全性的优化设计带来一些借鉴与参考。     

海上风电风机基础结构形式及安装技术

本文结合具体工程实例,介绍了海上风电风机基础结构形式,详细阐述了施工方案和施工作业流程,包括稳桩平台安装、基础桩起吊入稳桩平台、沉桩等内容,并提出了桩内填芯混凝土浇筑措施,以提高海上风电风机基础的安装质量和运行效率,确保海上风电工程整体施工质量,推动海上风电的可持续发展。     

墩台整体预制安装在外海平台施工中的应用

依托江苏海洋观测平台项目,在外海永久性平台的施工过程中,针对外海极其恶劣的气象条件,对墩台和观测室的常规施工方案进行优化,采取陆上整体预制、海上安装的施工工艺,大大缩短了主体工程的施工周期,可为类似外海平台工程提供借鉴。     

海洋平台大型模块整体安装技术

大型起重船的紧缺以及大型平台模块吊装高昂的安装费用迫使人们寻找经济的替代方法.传统的平台上部模块安装是采用浮吊进行海上模块化吊装的.此方法受到海洋外部环境、浮吊载重量及施工海域的水深条件等限制,致使平台的建造工期长,经济效益差,导致海上油田开发的工程建造费用投资大.简要介绍了海洋平台大型模块整体安装新技术漂浮安装的方法...     

陆丰海上开敞式码头结构设计的几点体会

重点介绍陆丰海上开敞式码头结构设计中的波浪力计算、结构整体稳定及物理模型试验成果。     

大桥主跨钢管混凝土系杆拱的整体安装

本文主要介绍洋河大桥钢管拱整体安装工艺，对施工过程提出一些控制措施，通过此工程的安装方法，可以为相类似工程提供借鉴。     

海上风电项目机组安装质量控制要素

风电机组安装是海上风电项目开展的重要环节,其安装质量对后期运营起着十分重要的保障作用。受限于当前海上风电产业链的影响,风电机组由不同的制造厂商完成生产后再运输至现场进行安装,因此,风电机组的整体安装质量取决于机组进场安装前的验收准备工作与机组安装过程这两个阶段的质量控制。本文通过分析海上风电项目的特点,总结出风电机组安装环节的质量控制要素,为提高海上风电机组安装质量提供了重要参考。     

首个海上风电场建设安装获6项国家专利

<正>在我国首个海上风电场——上海东海大桥10万千瓦海上风电示范项目中,基础施工和安装过程中共有6项技术成果获得国家专利,另有6项专利申请获受理。承担上海东海大桥10万千瓦海上风电示范项目的风机的基础施工与安装的中交第三航务工程局有限公司,作为目前国内唯一一家有海上风电整体安装成功经验的企业,通过自主创新,解决了在水深10米的近海深水段实施海上整体吊装过程中     

海上风力机安装技术研究(英文)

Wind power has made rapid progress and should gain significance as an energy resource, given growing interest in renewable energy and clean energy. Offshore wind energy resources have attracted significant attention, as, compared with land-based wind energy resources, offshore wind energy resources are more promising candidates for development. Sea winds are generally stronger and more reliable and with improvements in technology, the sea has become a hot spot for new designs and installation methods for wind turbines. In the present paper, based on experience building offshore wind farms, recommended foundation styles have been examined. Furthermore, wave effects have been investigated. The split installation and overall installation have been illustrated. Methods appropriate when installing a small number of turbines as well as those useful when installing large numbers of turbines were analyzed. This investigation of installation methods for wind turbines should provide practical technical guidance for their installation.     

超大型风机安装平台自升状态下的运动响应频域分析

针对自升自航式海上风机安装作业平台在风浪较大的海上风电场区域作业时风、浪、流载荷较大,影响安全的问题,基于SESAM软件,建立海上风机安装作业平台有限元模型,在频域内计算了波浪载荷和运动响应传递函数,并进行响应谱分析。结果表明,平台运动响应受波浪周期和浪向角的影响较大,当桩腿接近海底时,有可能对导致桩腿触底,在船舶设计以及船舶实际作业时应注意避免这种现象发生。     

自升式风电安装船桩腿及升降系统现状与发展

综述了自升式海洋风电安装船的桩腿结构、升降系统组成及主要技术参数特征;通过对桩腿结构、升降系统及动力源进行对比,指出了未来海洋风电安装船桩腿及其升降系统的发展方向:即适应30m以上深水作业环境、升降速度更快、效率更高、具有更好的稳定性、可靠性,为进一步的设计研究指明方向和解决思路.     

船行波对近距沉管隧道管节安装施工的影响分析

目前国内规范尚未规定船行波对临近岸坡和船舶的作用,得出船行波对海上作业船舶的影响规律尤为重要。为了能够分析清楚船行波对港珠澳大桥岛隧工程沉管隧道管节安装过程中的影响,提前采取防范措施,避免因船行波的影响对工程造成损失,对国内、外学者发表的相关文献及国外相关的规范进行了研究,修订了一些文献中的笔误,推荐了适用于港珠澳大桥沉管隧道管节安装中船行波的计算公式。通过现场实际条件计算,结合已有的物理模型试验、现场实测等成果,给出了船行波的主要影响因素和随距离衰减的规律,从而得出了沉管安装的船舶航行限速条件。     

远海自升式风电一体化运输与安装探讨

由于远海域自然环境更为恶劣,作业窗口期更短。充分利用窗口期,提高施工效率是风机安装施工的关键。通过调研和分析国内外风机运输和安装技术现状,以1 200 t自升式风电安装船和西门子4 MW机型为研究对象,提出利用自升式平台船垂直运输塔筒、水平叠加运输叶片的运输安装一体化技术,可减少涌浪对传统工艺中运输驳船的限制,提高窗口期的利用效率,提高施工工效,适用于远海风电场的建设。     

Study on a new method for installing a monopile and a fully integrated offshore wind turbine structure

This paper presents a preliminary technical feasibility study on a new methodology proposed for installing a monopile-based bottom supported offshore wind turbine structure. The concept is developed to address the problem of “waiting for a suitable weather window” which is commonly faced by the existing installation methods that uses a typical jack-up platform. In the methodology, a floating vessel along with a floatable subsea structure fitted with a hull on the top, hereafter named SSIP (subsea structure for installing a pile), is proposed first to install a monopile. Then the same structure is used to carry an FIUS (fully integrated upper structure) of an offshore wind turbine, which is characterized by a telescopic tower, and install it over the monopile by using an FOP (float-over-pulling) arrangement. Here, the installation methodologies are first briefly described along with the critical load cases associated with them. These load cases are then numerically studied for a significant wave height (H_S) of 2.5 m, and the results are summarized. For installing a fully integrated offshore wind turbine upper structure on a monopile foundation by the FOP method, two installation schemes are presented, and their dynamic characteristics are compared. It is shown that the proposed methodologies have potential to provide installation solutions which can be environmentally more robust compared to the existing method for installing an offshore wind turbine.     

Numerical Simulation of Float-Over Installation for Offshore Platform

In this paper, a numerical investigation of a float-over installation for an offshore platform is presented to verify the feasibility of the actual installation. The hydrodynamic performance of a T-barge is investigated in the frequency domain, and the coupled motions are analyzed in the time domain. We then compare with those of the model test and determine that the response amplitude operator and the time series agree quite well. The barge exhibits favorable hydrodynamic behavior in the considered sea state, and the equipment loads are allowable. The mooring system and sway fender forces are within the permissible range. Based on these results, we can verify that the actual installation of the offshore platform is feasible. We accurately simulated many important factors and effectively reduced the risk associated with the offshore installation, which is of great importance. As such, we demonstrate that the numerical simulation of the float-over installation for offshore platforms has practical engineering significance.     

海上石油平台液压多功能输送栈桥研制

介绍海上石油平台液压多功能输送栈桥的技术性能、主要结构及工作原理,该栈桥具有搭接安全可靠、外输管线集成化程度高,机械化程度高、操作方便等优点,已在海洋石油平台上得到成功应用。     

海上风机整体安装船起重车架设计与强度分析

海上风机整体式安装船是一种新型风机运输安装工作船,侧挂式重型起重车是其实现高效安装的核心装备。根据海上风机整体安装的特点和要求,依据起重机设计规范,设计了风机整体安装侧挂起重小车;分析了最不利工况下起重车所承受的各类载荷及相应计算方法;利用 Ansys软件计算了在此工况下车架结构的应力和变形。通过有限元分析验证侧挂式起重小车结构设计的合理性,为类似形式的侧挂式起重车结构设计提供借鉴。     

海洋平台浮拖安装的数值仿真（英文）

In this paper, a numerical investigation of a float-over installation for an offshore platform is presented to verify the feasibility of the actual installation. The hydrodynamic performance of a T-barge is investigated in the frequency domain, and the coupled motions are analyzed in the time domain. We then compare with those of the model test and determine that the response amplitude operator and the time series agree quite well. The barge exhibits favorable hydrodynamic behavior in the considered sea state, and the equipment loads are allowable. The mooring system and sway fender forces are within the permissible range. Based on these results,we can verify that the actual installation of the offshore platform is feasible. We accurately simulated many important factors and effectively reduced the risk associated with the offshore installation, which is of great importance. As such, we demonstrate that the numerical simulation of the float-over installation for offshore platforms has practical engineering significance.