具有裂纹损伤的海底管道断裂及疲劳评估.pdf

第 23 卷第 3 期海洋工程 Vol
23 No
3
2005 年 8 月 THE OCEAN ENGINEERING Aug. 2005
文章编号: 1005
9865( 2005) 03
0007
10
具有裂纹损伤的海底管道断裂及疲劳评估
金伟良1 , 付
勇1 , 赵冬岩2 , 白秉仁2
( 1. 浙江大学结构工程研究所, 浙江杭州
310027; 2. 中海石油工程有限公司, 天津
300456)
摘
要: 海底管道是海洋石油开发的重要设施之一, 对其进行断裂安全评估是非常重要的。介绍了结构失效评估图( FAD) 技
术, 详细阐述了 BS7910
1999 规范中三个不同等级的断裂评估方法和疲劳评估方法。通过断裂评估方法, 能够对不同受力状
态下的含焊接裂纹管道进行断裂评估, 得到管道任何位置的极限裂纹长度; 通过疲劳评估方法, 能够对受复杂动荷载的含焊
接裂纹管道进行疲劳评估, 得到管道在此种受力环境下的疲劳寿命。
关键词: 海底管道; 损伤; 裂纹; 断裂评估; 疲劳评估; 焊接结构
中图分类号:TE973
1
文献标识码: A
Fracture and fatigue assessment on submarine pipelines with crack damages
JIN Wei
liang1, FU Yong1, ZHAO Dong
yan2, BAI Bing
ren2
( 1. Institute of Structural Engineering , Zhejiang University, Hangzhou 310027, China; 2. China Offshore Oil Engineering Ltd. , Tianjin
300456, China)
Abstract: Submarine pipeline is one of the important facilities of marine oil development. It is very important to make a fracture safety assess
ment on it. In this paper, the application of failure assessment diagram( FAD) technology , the fracture safety assessment of three grades and
the fatigue assessment included in the BS7910: 1999 Standard are introduced in detail. With the fracture assessment method, we can make a
fracture assessment on the flawed pipeline under stresses, and achieve the maximum length of the flaw in the pipeline. With the fatigue assess
ment method, we can make a fatigue