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腐蚀缺陷管道极限弯矩承载力分析

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Indexed by:期刊论文

Date of Publication:2013-12-15

Journal:化工设备与管道

Included Journals:ISTIC

Volume:50

Issue:6

Page Number:64-67,78

ISSN No.:1009-3281

Key Words:海底管道;槽型单点腐蚀;联合荷载;极限弯矩

Abstract:采用构造权函数的方法,以完好管道的极限承载力为上界,无限长腐蚀管道的极限承载力为下界,开展了不同腐蚀程度钢质管道在内压、轴力和弯矩荷载共同作用下的极限承载力分析,得到了槽型单点腐蚀管道的极限弯矩求解公式.之后采用有限元的方法,考虑了材料非线性和几何非线性,对不同腐蚀程度管道的极限弯矩进行了数值仿真计算,验证所提出的槽型单点腐蚀管道极限弯矩求解公式.

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