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http://dx.doi.org/10.5000/EESK.2003.7.5.037

Proposition of Improved Semi-Analytical Relationship considering Response Characteristics of Buried Pipeline  

김태욱 (한국철도기술연구원 궤도·구조 연구그룹)
임윤묵 (연세대학교 공과대학 사회환경·시스템공학부 토목전공)
김문겸 (연세대학교 공과대학 사회환경·시스템공학부 토목전공)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.7, no.5, 2003 , pp. 37-46 More about this Journal
Abstract
Response analysis of buried pipeline subjected to permanent ground deformation(PGD) due to liquefaction is mainly executed by use of numerical analysis or semi-analytical relationship, Especially for the semi-analytical relationship considering transverse PGD, it has somewhat limited applicability : since it has different formula according to the width of PGD and does not reflect various patterns of PGD which is caused by the decrease of soil stiffness, Therefore, in this study, the applicability of existing analytical relationship is closely investigated through the comparison of FEM results at first. And then, based on meaningful contemplation, improved analytical relationship is proposed. The proposed one models the system behavior of buried pipeline as the combination of cable and beam, and thus it is applicable to arbitrary width of PGD, Moreover, it does reflect various patterns of PGD by introducing interaction pattern coefficient. Through the comparison of numerical results using the FEM and the proposed analytical relationship, rational applicability is objectively verified and noticeable considerations are discussed, Moreover, analyses considering the change of PGD magnitude and patterns are performed.
Keywords
buried pipeline; permanent ground deformation; analytical relationship; pgd patterns; interaction pattern coefficient;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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