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http://dx.doi.org/10.7842/kigas.2013.17.2.1

A Study on Stress Assessment of Standing Gas Pipeline Subjected to Ground-Subsidence  

Kil, Seong-Hee (Dept. of Gas Safety R&D Institute, Korea Gas Safety Corporation)
Kim, Byung-Duk (Dept. of Gas Safety R&D Institute, Korea Gas Safety Corporation)
Kwon, Jeong-Rock (Dept. of Gas Safety R&D Institute, Korea Gas Safety Corporation)
Yoon, Kee-Bong (Dept. of Mechanical Engineering of Chung-Ang University)
Publication Information
Journal of the Korean Institute of Gas / v.17, no.2, 2013 , pp. 1-8 More about this Journal
Abstract
In this study, 120 cases of damage due to ground subsidence of city gas pipeline which is hanging on apartment outer wall were investigated. From the survey results, it was determined to be approximately 100m~200mm ground subsidence occurred and at severe damage, pipeline was cut and the gap was about 50mm between two cut pipeline. Device for measuring the amount of deformation of standing gas pipeline was designed and fabricated. And installed it on apartment outer wall for measuring the deformation due to ground subsidence, after 5 months measurement the amount of ground subsidence was measured to 1.3mm. Stress assessment was conducted based on results of ground subsidence occurred on standing gas pipeline.
Keywords
ground subsidence; gas pipeline; deformation; theoretical analysis; stress assessment; hoop stress; expansion joint; thermal stress;
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