Next Article in Journal
Numerical Simulation Study on the Effects of Course Keeping on the Roll Stability of Submarine Emergency Rising
Previous Article in Journal
Semantic-Based Representation Binary Clone Detection for Cross-Architectures in the Internet of Things
Article Menu

Export Article

Open AccessArticle

Experimental and Numerical Study on the Strain Behavior of Buried Pipelines Subjected to an Impact Load

1
School of Urban Construction, Yangtze University, Jingzhou 434023, China
2
Hubei Provincial Oil and Gas Storage and Transportation Engineering Technology Research Center, Jingzhou 434023, China
3
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(16), 3284; https://doi.org/10.3390/app9163284
Received: 17 July 2019 / Revised: 2 August 2019 / Accepted: 8 August 2019 / Published: 10 August 2019
  |  
PDF [9565 KB, uploaded 10 August 2019]
  |  

Abstract

Long-distance oil and gas pipelines are inevitably impacted by rockfalls during geologic hazards such as mud-rock flow and landslides, which have a serious effect on the safe operation of pipelines. In view of this, an experimental and numerical study on the strain behavior of buried pipelines under the impact load of rockfall was developed. The impact load exerted on the soil, and the strains of buried pipeline caused by the impact load were theoretically derived. A scale model experiment was conducted using a self-designed soil-box to simulate the complex geological conditions of the buried pipeline. The simulation model of hammer–soil–pipeline was established to investigate the dynamic response of the buried pipeline. Based on the theoretical, experimental, and finite element analysis (FEA) results, the overall strain behavior of the buried pipeline was obtained and the effects of parameters on the strain developments of the pipelines were analyzed. Research results show that the theoretical calculation results of the impact load and the peak strain were in good agreement with the experimental and FEA results, which indicates that the mathematical formula and the finite element models are accurate for the prediction of pipeline response under the impact load. In addition, decreasing the diameter, as well as increasing the wall thickness of the pipeline and the buried depth above the pipeline, could improve the ability of the pipeline to resist the impact load. These results could provide a reference for seismic design of pipelines in engineering. View Full-Text
Keywords: impact load; buried pipeline; finite element analysis; theoretical calculation; strain behavior impact load; buried pipeline; finite element analysis; theoretical calculation; strain behavior
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Dong, F.; Bie, X.; Tian, J.; Xie, X.; Du, G. Experimental and Numerical Study on the Strain Behavior of Buried Pipelines Subjected to an Impact Load. Appl. Sci. 2019, 9, 3284.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Appl. Sci. EISSN 2076-3417 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top