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论文标题 |
车辆载荷碾压作用下管道的安全性测试与分析 |
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发表期次 |
2008年第5期 |
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作 者 名 |
余红伟,倪友伟,姚士洪 |
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摘 要 |
(中国石油天然气管道局,河北廊坊 065000)
摘要:通过对重车碾压的土层压力进行试验,总结计算出了车辆载荷引起土层应力的分布规律,综合土层应力的分布
规律、土层参数和钢材参数,建立了重车碾压对管道应力影响的有限元分析模型,提出了应力在土壤中沿深度方向变化的
计算公式,通过静载和动载分析,计算出了管道安全的最低埋设深度,对埋深大于115 m且管道上覆土层均匀密实的管
道,由车辆载荷而导致的管道附加应力与管道强度及管道内气压相比,不会危及管道安全,也不会造成管道的疲劳破坏。
关键词:重车碾压;管道;安全;应力分布
中图分类号: TE88 文献标识码:B 文章编号: 1004 - 9614 (2008) 05 - 0006 - 03
Secur ity Test and Ana lysis of Over Loading
Truck Across Underground Pipeline
YU Hong2wei,N I You2wei, YAO Shi2hong
( Ch ina Petroleum Pipeline Bureau, Langfang 065000, Ch ina)
Abstract: The distributing rule of soil stresswhich was aroused by over loading truck was summarized by soil stress testing of
loading truck over passing. Synthesizing the distributing rule of soil stress, soil parameter and p ipeline material parameter, the influ2
ence of over loading truck across to p ipeline was analyzed by finite element simulation and the formula of stress following dep th in
soilwas p resented. The safe dep th of p ipeline was calculated through static analyzing and cynamic analyzing. While the burying
dep th of p ipeline exceeds 115 m and cover soil is dense and uniform, the accessional p ipeline stress which is aroused by loading
truck over passing is very little to compare with p ipeline material strength, and canpt
endanger p ipeline safety, and canpt
cause p ipe2
line fatigue damage.
Key words:over loading truck across; p ipeline; safety; stress distribution | | |
