Push Force Analysis of Anchor Block of the Oil and Gas Pipeline in a Single-Slope Tunnel Based on the Energy Balance Method

Autor: Xiangzhen Yan, Yifei Yan, Lisong Zhang
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Bending
Energy balance
lcsh:Medicine
020101 civil engineering
Thrust
Transportation
02 engineering and technology
010502 geochemistry & geophysics
01 natural sciences
Thermal expansion
0201 civil engineering
Computer Architecture
Lateral earth pressure
Anesthesiology
Medicine and Health Sciences
Anesthesia
lcsh:Science
Multidisciplinary
Pharmaceutics
Physics
Applied Mathematics
Classical Mechanics
Structural engineering
Stagnation point
Finite element method
Deformation
Professions
Petroleum
Physical Sciences
Engineering and Technology
Geology
Research Article
Computer and Information Sciences
China
Finite Element Analysis
Natural Gas
Computer Software
Drug Therapy
Approximation error
Pressure
Pipelines (Computing)
0105 earth and related environmental sciences
Damage Mechanics
business.industry
lcsh:R
Elbow Block
Engineers
Models
Theoretical
Compatibility (mechanics)
People and Places
lcsh:Q
Population Groupings
Local and Regional Anesthesia
business
Mathematics
Zdroj: PLoS ONE
PLoS ONE, Vol 11, Iss 3, p e0150964 (2016)
ISSN: 1932-6203
Popis: In this paper, a single-slope tunnel pipeline was analysed considering the effects of vertical earth pressure, horizontal soil pressure, inner pressure, thermal expansion force and pipeline-soil friction. The concept of stagnation point for the pipeline was proposed. Considering the deformation compatibility condition of the pipeline elbow, the push force of anchor blocks of a single-slope tunnel pipeline was derived based on an energy method. Then, the theoretical formula for this force is thus generated. Using the analytical equation, the push force of the anchor block of an X80 large-diameter pipeline from the West-East Gas Transmission Project was determined. Meanwhile, to verify the results of the analytical method, and the finite element method, four categories of finite element codes were introduced to calculate the push force, including CAESARII, ANSYS, AutoPIPE and ALGOR. The results show that the analytical results agree well with the numerical results, and the maximum relative error is only 4.1%. Therefore, the results obtained with the analytical method can satisfy engineering requirements.
Databáze: OpenAIRE
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