Research on the Mechanism of the Influence of Earthquake-Induced Landslides on the Stress and Deformation Characteristics of Tunnel

The landslide at the entrance of a railway tunnel in the southwestern region is relatively large, especially due to earthquakes and other factors, which are prone to severe disasters and threaten the safety of the tunnel. Through the long-term monitoring test and numerical calculation analysis on-si...

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Autores principales:	Yufang Zhang, Hongyu Liu, Jian Li, Qidi Huang, Xianjie Ma, Wei Li
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/1ee08f4356a64653ad8dc23888f4dac3
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spelling	oai:doaj.org-article:1ee08f4356a64653ad8dc23888f4dac32021-11-29T00:55:29ZResearch on the Mechanism of the Influence of Earthquake-Induced Landslides on the Stress and Deformation Characteristics of Tunnel1687-844210.1155/2021/3643100https://doaj.org/article/1ee08f4356a64653ad8dc23888f4dac32021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/3643100https://doaj.org/toc/1687-8442The landslide at the entrance of a railway tunnel in the southwestern region is relatively large, especially due to earthquakes and other factors, which are prone to severe disasters and threaten the safety of the tunnel. Through the long-term monitoring test and numerical calculation analysis on-site, the mechanism of the influence of the earthquake-induced landslide on the characteristics of the tunnel’s force and deformation is studied. The research results show that the earthquake caused the landslide thrust to increase. Because of the existence of the supporting structure, the landslide thrust was consumed, and the remaining part resulted in the compression failure of the tunnel. During the seismic monitoring period, the stress loss of the antislide pile anchor cable was 3.73% and the stress of the second lining of the tunnel increased by 25%. Under the condition of extreme seismic, shear failure occurred at the vault, bottom, and waist of the right-line tunnel, and the tensile strength of the right-line tunnel reached 93.8% of the limit value. For the weak links of the tunnel structure, dense reinforcement planting and strengthening of concrete strength should be adopted to enhance the safety of the tunnel structure. While designing the supporting structure, the rock-socketing depth of the antislide piles and the number of antislide piles should be considered a priority. The impact of the antislide pile spacing is relatively small.Yufang ZhangHongyu LiuJian LiQidi HuangXianjie MaWei LiHindawi LimitedarticleMaterials of engineering and construction. Mechanics of materialsTA401-492ENAdvances in Materials Science and Engineering, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Yufang Zhang Hongyu Liu Jian Li Qidi Huang Xianjie Ma Wei Li Research on the Mechanism of the Influence of Earthquake-Induced Landslides on the Stress and Deformation Characteristics of Tunnel
description	The landslide at the entrance of a railway tunnel in the southwestern region is relatively large, especially due to earthquakes and other factors, which are prone to severe disasters and threaten the safety of the tunnel. Through the long-term monitoring test and numerical calculation analysis on-site, the mechanism of the influence of the earthquake-induced landslide on the characteristics of the tunnel’s force and deformation is studied. The research results show that the earthquake caused the landslide thrust to increase. Because of the existence of the supporting structure, the landslide thrust was consumed, and the remaining part resulted in the compression failure of the tunnel. During the seismic monitoring period, the stress loss of the antislide pile anchor cable was 3.73% and the stress of the second lining of the tunnel increased by 25%. Under the condition of extreme seismic, shear failure occurred at the vault, bottom, and waist of the right-line tunnel, and the tensile strength of the right-line tunnel reached 93.8% of the limit value. For the weak links of the tunnel structure, dense reinforcement planting and strengthening of concrete strength should be adopted to enhance the safety of the tunnel structure. While designing the supporting structure, the rock-socketing depth of the antislide piles and the number of antislide piles should be considered a priority. The impact of the antislide pile spacing is relatively small.
format	article
author	Yufang Zhang Hongyu Liu Jian Li Qidi Huang Xianjie Ma Wei Li
author_facet	Yufang Zhang Hongyu Liu Jian Li Qidi Huang Xianjie Ma Wei Li
author_sort	Yufang Zhang
title	Research on the Mechanism of the Influence of Earthquake-Induced Landslides on the Stress and Deformation Characteristics of Tunnel
title_short	Research on the Mechanism of the Influence of Earthquake-Induced Landslides on the Stress and Deformation Characteristics of Tunnel
title_full	Research on the Mechanism of the Influence of Earthquake-Induced Landslides on the Stress and Deformation Characteristics of Tunnel
title_fullStr	Research on the Mechanism of the Influence of Earthquake-Induced Landslides on the Stress and Deformation Characteristics of Tunnel
title_full_unstemmed	Research on the Mechanism of the Influence of Earthquake-Induced Landslides on the Stress and Deformation Characteristics of Tunnel
title_sort	research on the mechanism of the influence of earthquake-induced landslides on the stress and deformation characteristics of tunnel
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/1ee08f4356a64653ad8dc23888f4dac3
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Research on the Mechanism of the Influence of Earthquake-Induced Landslides on the Stress and Deformation Characteristics of Tunnel

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