海底输油管线吊放过程中的强度和变形计算

The Strength and Deformation Calculation of Seabed Pipeline During Installation Procedure

海底输油管线在敷设过程中需进行管线吊放作业．为了正确模拟管线的吊放过程，提出了一种采用几何非线性和物理非线性的数值处理方法，并对一管线实例进行了强度和变形计算，为吊放作业提供了理论依据．

The lift up and lie down are the key operations during installation procedure of seabed pipeline.In order to simulate the lift up and lie down procedure of pipeline correctly,the geometric nonlinearity is taken into account and a material nonlinear model is proposed to deal with the pipeline contact problem as the theoretica basis.A practical example of pipeline analysis is presented to show the validity of this method.