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Purpose: The study aims to investigate the behavior of buried steel pipelines in different layouts under the influence of various permanent ground movements that may occur as a result of earthquakes. In addition, different factors such as pipe diameter, pipe material properties, burial depth, and lateral earth pressure were varied to form 8 different analysis groups to determine their effects on the performance of pipelines. The results will contribute to the practical design and preliminary evaluation of the pipelines by the operating institutions. Theory and Methods: The effects of 10 different axial ground motion lengths, 9 different ground displacements, 8 different pipe layout models and 16 different variables (e.g. burial depth) were evaluated by finite element analyses. In order to observe the interdependent effects of the changes, analyzes were carried out by considering over ten thousand combinations. Results: The effects of the length of the PGD zone and the amount of displacement on pipeline behavior are assessed relative to boundaries (Fig. A) for different pipeline layouts. Moreover, the effects of the investigated variables on pipe stress and strain are explained one by one in the study. Conclusion: The effect of variables such as burial depth and pipe material properties on the analysis results varies depending on pipeline layouts and other parameters such as displaced ground block length and displacement amounts. Contributions of all these factors on pipeline performance are explained in detail to provide guidelines for the design and preliminary evaluation of the pipelines by institutions which operates the systems.

来源平台：JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY