基于管土耦合模型的海底管道管跨涡激振动分析  

Flow Induced Vibration Analysis on Submarine Pipeline Span Based on Pipe-Soil Coupling Model

作　　者：时米波[1] 陈国明[1] 孙友义[1] 

机构地区：[1]中国石油大学(华东)机电工程学院,山东东营257061

出　　处：《石油矿场机械》2007年第10期5-8,共4页Oil Field Equipment

基　　金：高等学校博士学科点专项科研基金项目(20060425506)

摘　　要：对于海底管跨涡激振动的研究,传统计算模型是将管跨两端作固支或简支处理。考虑管跨入土段与土壤之间的非线性作用力,采用ANSYS有限元分析软件建立起管土耦合非线性有限元模型,弥补了传统计算模型的缺点。通过对不同土壤和流速条件下管跨涡激振动的研究,与传统计算模型相比,提出的管土耦合模型具有更好的计算精度,计算结果可为海底管线疲劳寿命的进一步分析提供支持。The paper presents a pipe-soil coupling nonlinear model for the analysis on the vortex- induced vibration of submarine pipeline span by using finite element analysis software ANSYS, by which, the nonlinear interaction between the pipe and soil should be considered. The dynamic behaviors for pipeline span under different conditions of soil and current speed are investigated numerically based the new model, which show digital assessment based on the new model. It would achieve more precise results than on the simplification model in which it is assumed that pipe in span is clamped or simply supported at both ends.

关 键 词：海底管跨 涡激振动 固有频率 动态分析 

分 类 号：TE973.921[石油与天然气工程—石油机械设备]