PSI - Issue 40

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 40 (2022) 245–250

© 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the15th International Conference on Mechanics, Resources and Diagnostics of Materials and Structures. The article presents the results of monitoring the PHAP of the section of the underwater crossing of across the river Lena on the Hatasskaya channel. It has been established that there are extensive vertical transverse displacements of the pipeline in the ground during seasonal ground motions. Therefore, the resulting stresses can be significant. The present graphs demonstrate the solution to the equation of an underground pipeline according to the data of October 2018 on PHAP changes © 2022 The Authors. Published by ELS EVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures. Keywords: underground pipeline; frost heaving; permafrost soil; planned-high-altitude position;riverbed erosion. As o e of t e mos crit cal processes, frost heaving can lead to intense bends of pipelines in the vertical plane, sagging of individual sections, displacements, ometimes with loss of longitudinal sta ility. The interactio of pipelines with surrou ding soils s one of he main factors that determ n the operational reliability of pipelines. The articl presents the result of monitor g PHAP f the sect on of the und rwater crossing of across the river Lena on the Hatasskaya chan el. It has been established that there are xt nsive vertical transv se di placements of the pipeli e i ground during seasonal ground motions. Therefore, the resulting stresses can be significant. The pres grap s demonstrate sol tion to the equation of an underground pip lin acco ding to the data of October 2018 on PHAP cha ges © 2022 The Authors. Published by ELS EVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under re ponsibility of scientific committe of the15th Int rnational Co ference o Mechanics, Resource and Diagnostics of Materials and S ructur s. Keywords: underground pipeline; f ost heaving; permafrost soil; planned-high-altitude position;riverbed erosion. 15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures On the influence of natural climatic conditions on the planned high-altitude position of the pipeline Z.G. Kornilova*, G.S. Ammosov, D.S. Ivanov, A.A. Antonov V.P. Larionov Institute of the Physical-Technical Problems of the North of the Siberian Branch of the RAS,1 Oktyabrskaya str., Yakutsk, Republic of Sakha (Yakutia), Russia Abstract The uneven nature of the planned-high-altitude positions (PHAP) of the underwater crossing of the trunk gas pipeline (TGL) on the floodplain of the river Lena is affected by natural climatic, hydrological, and permafrost processes (heaving, thawing, freezing), which in total increase non-functional loads on the pipeline. As one of the most critical processes, frost heaving can lead to intense bends of pipelines in the vertical plane, sagging of individual sections, displacements, sometimes with loss of longitudinal stability. The interaction of pipelines with surrounding soils is one of the main factors that determine the operational reliability of pipelines. 15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures On the influence of natural climatic conditions on the planned high-altitude position of the pipeline Z.G. Kornilova*, G.S. Ammosov, D.S. Ivanov, A.A. Antonov V.P. Larionov Institute of the Physical-Technical Problems of the North of the Siberian Branch of the RAS,1 Oktyabrskaya str., Yakutsk, Republic Sakha (Yakutia), Russ Abstract The uneven nature of the planned-high-altitude positions (PHAP) of the underwater crossing of the trunk gas pipeline (TGL) on the floodplain of the river Lena is affected by natural climatic, hydrological, and permafrost processes (heav g, thawing, fr ezing), which in total increase non-fun tional loads on the pipeline.

* Corresponding author. Tel.:+7-914-225-83-79. E-mail address: zoya_korn@mail.ru * Corresponding author. Tel.:+7-914-225-83-79. E-mail ad ress: zoya_korn@mail.ru

2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures. 2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review u der re ponsibility of scientific committe of the15th Int rnational C ference o Mechanics, Resource and Diagnostics of Mate ials and Structures.

2452-3216 © 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the15th International Conference on Mechanics, Resources and Diagnostics

of Materials and Structures. 10.1016/j.prostr.2022.04.033