Seismic Performance Analysis of Pipeline with Different Corrosion Defects

含不同腐蚀缺陷管道抗震性能分析

管友海、王亚洲、贾娟娟、苏宁

1副教授，中国石油大学（华东）储运与建筑工程学院；山东省青岛经济技术开发区长江西路66号266580；Tel：13864220186；Fax：0532-86981138；Email：guanyouhai@upc.edu.cn；

2硕士研究生，中国石油大学（华东）储运与建筑工程学院；山东省青岛经济技术开发区长江西路66号266580；Tel：13553061563；Fax：0532-86981138；Email：dongewyz@gmail.com；

3硕士研究生，中国石油大学（华东）储运与建筑工程学院；山东省青岛经济技术开发区长江西路66号266580；Tel：15264252651；Fax：0532-86981138；Email：845985540@qq.com；

4硕士研究生，中国石油大学（华东）储运与建筑工程学院；山东省青岛经济技术开发区长江西路66号266580；Tel：13687689424；Fax：0532-86981138；Email：147405236@qq.com；

摘要：为对比分析含有不同腐蚀缺陷的输油管道的抗震性能,采用有限元软件ADINA建立地震作用下的管道与内部流体的液固耦合模型。通过对比不同腐蚀深度（本文选取完好管道、腐蚀深度为30%、50%、70%、90%的管道）和不同腐蚀位置（内部腐蚀和外部腐蚀）下管道的应力应变峰值及特殊点处的应力应变情况，分析腐蚀深度及内外腐蚀对管道抗震性能的影响，从而对实际工程中的管道检修起到一定的指导意义。分析表明，外腐蚀比内腐蚀对管道的抗震性能影响更大；随着腐蚀深度增加，管道的应力的涨幅越来越大；无论是内腐蚀还是外腐蚀，当管道腐蚀深度超过50%时，在地震作用下管道都有断裂危险。

关键词:腐蚀缺陷、架空管道、抗震性能

seismic
performance analysis of pipeline with different corrosion defects

Guan Youhai, Wang
Yazhou, Jia Juanjuan, Su Ning

1 Associate Professor,
Collage of Pipeline and Civil Engineering, China University of Petroleum,66# Yangtze River Road West,
Qingdao Economic-Technological
Development Area, Shandong, China,266580; Tel:13864220186;Fax:0532-86981138；Email:guanyouhai@upc.edu.cn;

2 Graduate Students, Collage
of Pipeline and Civil Engineering, China University of Petroleum,66# Yangtze
River Road West, Qingdao Economic-Technological Development Area, Shandong,
China,266580; Tel:13553061563;Fax:0532-86981138；Email:dongewyz@gmail.com;

3 Graduate Students,
Collage of Pipeline and Civil Engineering, China University of Petroleum,66#
Yangtze River Road West,Qingdao Economic-Technological Development Area,
Shandong, China,266580; Tel:15264252651;Fax:0532-86981138；Email:845985540@qq.com;

4 Graduate Students,
Collage of Pipeline and Civil Engineering, China University of Petroleum,66#
Yangtze River Road West,Qingdao Economic-Technological Development Area,
Shandong, China,266580; Tel:13687689424;Fax:0532-86981138；Email:147405236@qq.com;

Abstract: To
compare the seismic performance analysis of pipeline with different corrosion
defects, the finite element software ADINA was used to build pipeline under
earthquake and liquid-solid coupling model of internal fluid. By comparing
different etching depths (selecting corrosion depth of 30%, 50%, 70%, 90% of
the intact pipeline) with the peak strain and stress value in different corrosion
positions (internal corrosion and external corrosion) and strain and stress at
a particular point, we can analyze effects of corrosion depth and internal and
external corrosion on the seismic performance of the pipeline and have a
significance of guidance to the pipeline maintenance in practice as well.
It shows that external corrosion has greater effects on the seismic performance
of pipeline than internal corrosion; with the increase of corrosion depth, the growing
speed of pipe stress is increasing; either internal or external corrosion, the pipeline
is in danger of breaking under earthquake when pipeline corrosion depth is more
than 50%.

Keywords: corrosion defects, overhead pipes, seismic
performance