A Dynamic Method to Predict the Earthquake-Triggered Sliding Displacement of Slopes

The earthquake-induced permanent displacement is an important index of the potential damage to a slope during an earthquake. The Newmark method assumes that a slope is a rigid-plastic body, and the seismic responses of sliding masses or seismic forces along the slide plane are ignored. The decoupled...

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Autores principales:	Wenkai Feng, Zhichun Lu, Xiaoyu Yi, Shan Dong
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Engineering (General). Civil engineering (General) TA1-2040 Mathematics QA1-939
Acceso en línea:	https://doaj.org/article/2f21a11523654281b578fe69b091cb3b
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spelling	oai:doaj.org-article:2f21a11523654281b578fe69b091cb3b2021-11-29T00:56:18ZA Dynamic Method to Predict the Earthquake-Triggered Sliding Displacement of Slopes1563-514710.1155/2021/4872987https://doaj.org/article/2f21a11523654281b578fe69b091cb3b2021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/4872987https://doaj.org/toc/1563-5147The earthquake-induced permanent displacement is an important index of the potential damage to a slope during an earthquake. The Newmark method assumes that a slope is a rigid-plastic body, and the seismic responses of sliding masses or seismic forces along the slide plane are ignored. The decoupled method considers no relative displacement across the sliding plane, so it overpredicts the seismic response of the sliding mass. Both dynamic and sliding analyses are performed in the coupled method, but when Ts/Tm is large, the results are unconservative. In this paper, a method is proposed to predict the earthquake-triggered sliding displacement of slopes. The proposed method is based on the Newmark rigid method, coupled method, and decoupled method considering both the forces at the sliding interface and the system dynamics under critical conditions. For the flexible system, the displacements are calculated with different stiffness values, and the results show that as the stiffness increases and tends to infinity, the critical acceleration and displacements of the proposed method are close to those of the Newmark method. The proposed method is also compared with the Newmark method with the period ratio Ts/Tm. At small values of Ts/Tm, the flexible system analysis results of the displacement are more conservative than those of the rigid block model; at larger values of Ts/Tm, the rigid block model is more conservative than the flexible system.Wenkai FengZhichun LuXiaoyu YiShan DongHindawi LimitedarticleEngineering (General). Civil engineering (General)TA1-2040MathematicsQA1-939ENMathematical Problems in Engineering, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Engineering (General). Civil engineering (General) TA1-2040 Mathematics QA1-939
spellingShingle	Engineering (General). Civil engineering (General) TA1-2040 Mathematics QA1-939 Wenkai Feng Zhichun Lu Xiaoyu Yi Shan Dong A Dynamic Method to Predict the Earthquake-Triggered Sliding Displacement of Slopes
description	The earthquake-induced permanent displacement is an important index of the potential damage to a slope during an earthquake. The Newmark method assumes that a slope is a rigid-plastic body, and the seismic responses of sliding masses or seismic forces along the slide plane are ignored. The decoupled method considers no relative displacement across the sliding plane, so it overpredicts the seismic response of the sliding mass. Both dynamic and sliding analyses are performed in the coupled method, but when Ts/Tm is large, the results are unconservative. In this paper, a method is proposed to predict the earthquake-triggered sliding displacement of slopes. The proposed method is based on the Newmark rigid method, coupled method, and decoupled method considering both the forces at the sliding interface and the system dynamics under critical conditions. For the flexible system, the displacements are calculated with different stiffness values, and the results show that as the stiffness increases and tends to infinity, the critical acceleration and displacements of the proposed method are close to those of the Newmark method. The proposed method is also compared with the Newmark method with the period ratio Ts/Tm. At small values of Ts/Tm, the flexible system analysis results of the displacement are more conservative than those of the rigid block model; at larger values of Ts/Tm, the rigid block model is more conservative than the flexible system.
format	article
author	Wenkai Feng Zhichun Lu Xiaoyu Yi Shan Dong
author_facet	Wenkai Feng Zhichun Lu Xiaoyu Yi Shan Dong
author_sort	Wenkai Feng
title	A Dynamic Method to Predict the Earthquake-Triggered Sliding Displacement of Slopes
title_short	A Dynamic Method to Predict the Earthquake-Triggered Sliding Displacement of Slopes
title_full	A Dynamic Method to Predict the Earthquake-Triggered Sliding Displacement of Slopes
title_fullStr	A Dynamic Method to Predict the Earthquake-Triggered Sliding Displacement of Slopes
title_full_unstemmed	A Dynamic Method to Predict the Earthquake-Triggered Sliding Displacement of Slopes
title_sort	dynamic method to predict the earthquake-triggered sliding displacement of slopes
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/2f21a11523654281b578fe69b091cb3b
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A Dynamic Method to Predict the Earthquake-Triggered Sliding Displacement of Slopes

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