Vertical earth pressure calculation model for buried pipelines with straight grooves

Journal of Lanzhou University of Technology ›› 2020, Vol. 46 ›› Issue (5): 34-40.

• Mechanical Engineering and Power Engineering • Previous Articles Next Articles

Vertical earth pressure calculation model for buried pipelines with straight grooves

AN Zong-wen, WANG Ying-ying, ZHANG Yong-ming

College of Mechano-Electronic Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China

Received:2018-10-23 Online:2020-10-28 Published:2020-11-06

Abstract

Abstract: In order to solve the problem that the steel-plastic conversion structure parts in the trench pipeline, which are subject to the soil loading, are easy to deform and fracture, leading further to the failure of the structure parts and the leakage of the pipeline, a soil-caused vertical pressure calculation model, which is based on the theory of double shear unified strength, for rigid/flexible buried pipeline has been derived and established in this paper. The validity of the model is analyzed and verified by our examples calculated. The proposed model takes effects of main stress as well as back-filling soil into account. It is therefore shown that compared with Marston's theory the pressure value calculated by our model is reduced by 40%, which provides a new method for soil-caused vertical pressure calculation for straight groove buried pipeline.

Key words: straight groove trench-buried culverts, vertical earth pressure, unified strength theory

CLC Number:

TB114.3

AN Zong-wen, WANG Ying-ying, ZHANG Yong-ming. Vertical earth pressure calculation model for buried pipelines with straight grooves[J]. Journal of Lanzhou University of Technology, 2020, 46(5): 34-40.

References

[1] 梁瑞,袁松松,马东方.不同约束条件下瞬态流动对输流管道动力学的影响[J].兰州理工大学学报,2018,44(3):68-71.
[2] 俞树荣,张义远.管道完整性管理效能评价双指标体系的建立与应用[J].兰州理工大学学报,2018,44(4):66-70.
[3] 赵敏.土体沉陷时埋地管线力学性状的有限元分析[D].北京:中国石油大学,2016.
[4] 崔建波,王士杰,高峰.直槽沟填式刚性管道土压力计算[J].河北农业大学学报,2013,36(5):118-121.
[5] 李霞.基于压力管道的风险管理研究[D].兰州:兰州理工大学,2005.
[6] 杨敏,陈剑锋,刘全林.开槽埋设柔性管竖向土压力计算探讨 [J].特种结构,2007,24(3):129-131.
[7] RAJEEV P,SUMANASEKERA P R.SIVAKUGAN N.Average vertical stresses in underground mine stopes filled with granular backfills[J].Geotechnical & Geological Engineering,2016,34(6):2053-2061.
[8] 张国威.基于地基沉降的输气管道应力分析与监测[D].黑龙江:东北石油大学,2012.
[9] CHEN R P,CHE Y M,LINGD S.Analysis of vertical pressure on buried pipeline with case study[J].Journal of Zhejiang University(Science A:Applied Physics & Engineering),2000,1(4):414-420.
[10] 田文铎.地下管垂直土压力计算探讨[J].水利水电技术,1994(3):9-14.
[11] 崔建波.地下管涵管土相互作用规律研究[D].保定:河北农业大学,2013.
[12] 中华人民共和国建设部.给水排水工程管道结构设计规范:GB 50332—2002[S].北京:中国建筑工业出版社,2003.
[13] 俞茂宏.双剪理论及其应用[M].北京:科学出版社,1998.
[14] 范文,沈珠江,俞茂宏.基于统一强度理论的土压力极限上限分析[J].岩土工程学报,2005,27(10):1147-1153.
[15] 隋凤涛,王士杰.统一强度理论在地基承载力确定中的应用研究[C]// 全国岩石动力学学术会议暨国际岩石动力学专题研讨会资料之二.2011:3038-3042.
[16] 折学森,顾安全.沟谷地形中埋设管道的土压力研究[J].长安大学学报(自然科学版),1989,6(4):33-39.
[17] 黄崇伟.沟埋式输油管道管土相互作用分析[J].公路工程,2011,36(2):164-168.
[18] 折学森.填埋式管道垂直土压力的计算[J].建筑科学与工程学报,1993,10(1):28-34.

Vertical earth pressure calculation model for buried pipelines with straight grooves

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 2

Recommended Articles

Metrics

Comments

[1]	WEI Yao-bing, ZHAO Cheng, ZHANG Zhen, LIU Jian-hui. Residual strength degradation model of metal material based on gamma process [J]. Journal of Lanzhou University of Technology, 2022, 48(4): 36-42.
[2]	AN Zong-wen, GAO Xing-feng, MA Qiang, KOU Hai-xia. Vibration characteristics and stress distribution of MW grade composite wind turbine blades [J]. Journal of Lanzhou University of Technology, 2020, 46(6): 38-42.