{"title":"Study of the Effect of Soil Compaction and Height on Pipe Ovality for Buried Steel Pipe","authors":"Ali Ghodsbin Jahromi, Ehsan Moradi","volume":157,"journal":"International Journal of Aerospace and Mechanical Engineering","pagesStart":43,"pagesEnd":53,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/10011027","abstract":"<p>In this paper, the numerical study of buried steel pipe in soil is investigated. Buried pipeline under soil weight, after embankment on the pipe leads to ovality of pipe. In this paper also it is considered the percentage of soil compaction, the soil height on the steel pipe and the external load of a mechanical excavator on the steel pipe and finally, the effect of these on the rate of pipe ovality investigated. Furthermore, the effect of the pipes&rsquo; thickness on ovality has been investigated. The results show that increasing the percentage of soil compaction has more effect on reducing percentage of ovality, and if the percentage of soil compaction increases, we can use the pipe with less thickness. Finally, ovality rate of the pipe and acceptance criteria of pipe diameter up to yield stress is investigated.<\/p>\r\n","references":"[1]\tArmin Boostani , Hossein Ansari, Seyed Hassan Golmaei, Mohammadreza Akbarzade, \u201cConsidering the effect of loads and surrounding texture on steel pipeline in potable municipal water networks with Ansys Finite Element Model\u201d, Journal of Irrigation and Water Engineering, vol.2, pp. 58-69, 2012.\r\n[2]\tElachachi, S.M., D. Breysse and L. Houy. \u201cLongitudinal variability of soils and structural response of sewer networks\u201d, Computers and Geotechnics, vol. 31, 2004.\r\n[3]\tHyde, T.H., R. Lou and A.A. Becker. \u201cAnalysis of stresses in pipes indented by long external indentation & subsequent stress variation due to pressure fluctuations\u201d., International Journal of Pressure Vessels and Piping, vol. 86, pp. 428\u2013434, 2009.\r\n[4]\tPsyrras N., Sextos A., Kwon O.-S., Gerasimidis S. \u201cOn the safety factors of buried steel natural gas pipelines under spatially variable earthquake ground motion\u201d. 11th National Conference in Earthquake Engineering, Earthquake Engineering Research Institute, Los Angeles, CA, 2018. \r\n[5]\tN. Psyrrasa, O. Kwonb, S. Gerasimidisc, A. Sextosd. \u201cCan a buried gas pipeline experience local buckling during earthquake ground shaking?\u201d, Soil Dynamics and Earthquake Engineering, vol. 116, pp. 511\u2013529, 2019.\r\n[6]\tGrigorios Tsinidis, Luigi Di Sarno, Anastasios Sextos, Nikolaos Psyrras and Peter Furtner. \u201cOn the numerical simulation of the response of gas pipelines under compression\u201d. 9th International Conference on Advances in Steel Structures (ICASS), Hong Kong, China, 5-7 December 2018.\r\n[7]\tBulent Akbas, Eren U\u00e7kan, \u201cPerformance-based design of buried steel pipes at fault crossing\u201d, Pressure and Vessels & Piping Conference, , Boston, Massachusetts, USA, July 19-23 2015\r\n[8]\tKawaljitsingh Randhawa, \u201cOvality in pipes\u201d, International Journal of Latest Technology in Engineering, Management & Applied Science,| vol. 6, pp. 44-46, July 2017.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 157, 2020"}