Fuzzy Damage Analysis of the Seismic Response of a Long-Distance Pipeline under a Coupling Multi-Influence Domain

Peng Zhang, Yihuan Wang and Guojin Qin
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Peng Zhang: School of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu 610500, China
Yihuan Wang: School of Mechanical and Electrical Engineering, Southwest Petroleum University, Chengdu 610500, China
Guojin Qin: School of Mechanical and Electrical Engineering, Southwest Petroleum University, Chengdu 610500, China

Energies, 2018, vol. 12, issue 1, 1-18

Abstract: For a long-distance pipeline, the seismic load is a four-dimensional space-time excitation that simultaneously changes with time and space. In this work, a novel random space-time seismic model is established for a long-distance pipeline, which uses the Clough-Penzien model based on a random process and model of a random field. The response analysis of a long-distance pipeline for multipoint excitation and a buried pressure pipeline are established, while the stress analysis of the buried pressure pipeline is carried out in combination with von Mises theory. In addition, we consider the impact of the site type. The application of the proposed methodology is proved through numerical simulation. A fuzzy damage model and fuzzy safety criteria are established to assess the degree of the structure. The results indicate that a reasonable assessment and design method should consider the coupling multi-influence domain. In particular, evaluation of the structural damage should be done to establish fuzzy damage models and fuzzy safety criteria. The effective measurement of the uncertainty of such parameters forms an important basis for subsequent structural reliability analysis and design.

Keywords: long-distance pipeline; earthquake; random; coupling; fuzzy damage model (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
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