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http://dx.doi.org/10.5000/EESK.2010.14.5.065

Earthquake Fragility Analysis of a Buried Gas Pipeline  

Lee, Do-Hyung (배재대학교 공과대학 건설환경.철도공학과)
Jeon, Jeong-Moon (배재대학교 공과대학 토목환경공학과)
Oh, Jang-Kyun (배재대학교 공과대학 토목환경공학과)
Lee, Du-Ho (배재대학교 공과대학 토목환경공학과)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.14, no.5, 2010 , pp. 65-76 More about this Journal
Abstract
In this paper, earthquake fragility analysis has been comparatively performed with regard to a buried gas pipeline of API X65 which has been widely used in Korea. For this purpose, a nonlinear time-history analyses has been carried out for 15 different analytical models of a buried gas pipeline in terms of the selected 12 sets of earthquake ground motions with 0.1g of scaling interval. Following that, earthquake fragility analyses have been conducted using the maximum axial strain of the pipeline obtained from the nonlinear time-history analyses. Parameters under consideration for subsequent earthquake fragility analyses are soil conditions, end-restraint conditions, burial depth and the type of pipeline. Comparative analyses reveal that whereas the first three parameters influence the fragility curves, particularly soil conditions amongst the three parameters, the last parameter has a little effect on the curves. In all, the present study can be considered as a benchmark fragility analysis of a buried gas pipeline in the absence of an earthquake fragility analysis of the pipeline and thus is expected to be a useful source regarding earthquake fragility analyses of a buried gas pipelines.
Keywords
Buried gas pipeline; Axial strain; Nonlinear time-history analysis; Fragility analysis; Fragility curve;
Citations & Related Records
Times Cited By KSCI : 9  (Citation Analysis)
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