深水管道安装期的沉降分析方法

Analysis Method for Deepwater Pipeline Penetration during Installation Phase

深水海底管道安装时管道沉降直接影响其竖向、轴向和侧向力,管道沉降的分析方法是深水海底管道设计中的重要内容。介绍了深水管道安装时沉降的作用原理,采用引入载荷放大系数和敏感系数的方法来分析管土的相互作用,重点研究了深水海底管道安装时的沉降计算方法,该方法被应用于西非某实际深水项目海底管道系统的设计中。结合国外深水海底管道设计研究安装时管道的沉降,可以为我国南海类似深水项目设计提供指导。

During the installation phase of the deepwater pipeline, the pipeline penetration has a direct impact on its vertical force, lateral force and axial force. The analysis method of the pipeline penetration is an important part of the deepwater pipeline design. The principle of the penetration during the deepwater pipeline installation is outlined. The method of introducing the amplification factor and the sensitive factor is utilized to analyze the soil-pipeline interaction. The emphasis is put on the penetration calculation method during the deepwater pipeline installation. The method has been applied to the actual deepwater project in the west of Africa for the pipeline system design. The pipeline penetration study during installation phase based on the deepwater pipeline design of foreign country could provide design guidance for the design of similar deepwater project located in South China Sea.