基于ABAQUS的海底管道静水压溃压力的敏感性分析  

Sensitivity Analysis of Submarine Pipeline Hydrostatic Collapse Pressure Based on ABAQUS

作　　者：崔振平[1] 张中华[2] 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]国家海洋技术中心,天津300112

出　　处：《海洋技术》2012年第2期73-76,共4页Ocean Technology

摘　　要：局部屈曲压溃是海底管道发生稳定性破坏的一种形式,随着管道的刚度相对越来越柔,厚度相对越来越薄,管道发生屈曲压溃的问题也越来越突出。运用ABAQUS有限元分析软件进行管道的非线性屈曲分析,确定不同径厚比、初始椭圆度、轴向拉力和弯矩作用下的管道静水压溃压力,以分析静水压溃压力对这些因素的敏感性。Local buckling collapse is a form of instability failure on the submarine pipeline. As the thickness of the pipe becomes smaller and smaller, the stiffness of the pipe becomes softer and softer, instability failure problem is becoming more and more serious. A pipe nonlinear buckling analysis with ABAQUS code was presented. The model parameters were changed in order, such as diameter-to-thickness ratio, initial ovality, axial force and bending moment. Then a finite element analysis was made to determine the pipe collapse pressure. Finally, the changing regularity of collapse pressure and each analysis parameter was found.

关 键 词：海底管道 非线性屈曲 径厚比 初始椭圆度 敏感性分析 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]