车辆载荷碾压作用下管道的安全性测试与分析
Safety Test and Analysis of Rolling Action of Heavy Loading Truck on Underground Pipeline
浏览(2307) 下载(7)
- DOI:
- 作者:
- 余红伟, 倪友伟, 姚士洪
Yu Hongwei, Ni Youwei, Yao Shihong
- 作者单位:
- 中国石油天然气管道局, 河北廊坊 065000
China Petroleum Pipeline Bureau,Langfang 065000, China
- 关键词:
- 管道;重车碾压;土层压力试验;数值计算;应力分布
pipeline;rolling by heavy loading truck;soil layer pressure test;numerical calculation;stress distribution
- 摘要:
- 文章通过重车碾压的土层压力试验,总结出车辆载荷引起土层应力的分布规律,建立了重车碾压对管道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,计算了管道安全的最低埋设深度。现场测试与数值计算表明:对埋深大于1.5m且上覆土层均匀密实的管道,车辆荷载导致的管道附加应力值一般小于0.1MPa,与管道强度和管道内气压相比,不会造成管道的疲劳破坏。
Through the soil pressure test by rolling action of a heavy loading truck, the distribution rule of soil layer stresses was summarized. A finite element analysis model was established. The formula of soil stress with soil depth was presented and the minimum pipeline buried depth assuring pipeline safety was calculated.Field test and numerical calculation proved that for the buried pipeline covered by uniform compacted soil of more than 1.5 m thickness, the additional stress of pipeline induced by truck load was generally less than 0.1 MPa and did not lead to fatigue failure of the pipeline2009,03(03): 15-19 收稿日期：2008-6-18分类号：TE973.1作者简介：余红伟（1974-），男，湖北武汉人，工程师，1998年毕业于西南石油学院机械制造与设计专业，获硕士学位，现主要从事石油天然气管道施工技术研究工作。参考文献：
[1] 周纪芗. 实用回归分析方法[M]. 上海：上海科学技术出版社，1990.
[2] 王程华. 土力学原理[M]. 天津：天津大学出版社，1998.