0
research-article

FEM Simulations to Study Factors Affecting Buried Pipeline Subjected to Debris Flow

[+] Author and Article Information
Ying Wu

School of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu, 610500, Sichuan, China
wy_swpi@163.com

Sixi Zha

School of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu, 610500, Sichuan, China
1059550383@qq.com

Peng Wei Jin

School of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu, 610500, Sichuan, China
swpujpw@163.com

1Corresponding author.

ASME doi:10.1115/1.4042055 History: Received May 06, 2018; Revised November 11, 2018

Abstract

As the debris flow caused by sustained rainfall would cause destructive damage to buried pipeline, the safety of buried pipeline under impact of debris flow draws increasing attention. This paper focuses on the mechanical and deformed behavior of buried pipeline subjected to the debris flow. The effects of relevant parameters are investigated, including the velocity and impact angle of debris flow, massive stone, diameter to thickness ratio of pipeline (D/T) and parameters of corrosion pit (i.e, the depth, length, and width of corrosion pit). A finite model of soil and buried pipeline under the impact of debris flow is established. Multiple regression analysis is implemented to evaluate these influence parameters. The results show that: (1) the velocity and the impact angle of debris flow have a great influence on the pipeline; (2) the massive stone in the debris flow has little effect on the buried pipeline; (3) the internal pressure of the pipeline has an inhibitory effect on the deformation of the pipeline, which can enhance the ultimate bearing velocity of pipeline; (4) D/T determines the ultimate bearing velocity of pipeline. Moreover, the effects of the parameters of corrosion pit on the maximum Von Mises stress are analyzed by multiple regression and ranked as follows: corrosion depth (A)> corrosion length (L) > corrosion width (B). The result may provide effective guidance for the prevention of pipeline against debris flow in mountain area.

Copyright (c) 2018 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In