TY - GEN

T1 - Total failure probability of a slope at a given site in a seismic-prone zone in a specified exposure time

AU - Gong, Wenping

AU - Juang, C. Hsein

AU - Martin, James R.

AU - Liu, Wenxin

AU - Khoshnevisan, Sara

N1 - Publisher Copyright:
© ASCE.

PY - 2017

Y1 - 2017

N2 - This paper presents a study on the probabilistic seismic hazard analysis of a slope at a given site in a specified exposure time. This study is part of the long-term performance assessment of a slope. For the long-term performance assessment, the factors that may lead to failure of the slope over time, such as the seismic ground motion, spatial variability of soil strength, and fluctuation of groundwater level, should be considered. Here, the earthquake-induced ground motion at a given site in a specified exposure time is simulated by a random variable based on the USGS National Seismic Hazard Maps, the spatial variability of the shear strength of the soil is modelled by a random field, and the fluctuation of the groundwater level is modelled by a random variable. To estimate the total failure probability of the slope at a given site in a given exposure time, a recently developed sampling technique is adopted for the propagation of uncertainties, and a 2D finite difference program is used as the deterministic model for the slope stability analysis. To demonstrate the proposed approach, an illustrative example of a two-layer earth slope is studied; and, a parametric study is undertaken to investigate how the long-term performance of the slope is affected by the influencing factors. With the results presented, the versatility and effectiveness of the proposed probabilistic framework are illustrated.

AB - This paper presents a study on the probabilistic seismic hazard analysis of a slope at a given site in a specified exposure time. This study is part of the long-term performance assessment of a slope. For the long-term performance assessment, the factors that may lead to failure of the slope over time, such as the seismic ground motion, spatial variability of soil strength, and fluctuation of groundwater level, should be considered. Here, the earthquake-induced ground motion at a given site in a specified exposure time is simulated by a random variable based on the USGS National Seismic Hazard Maps, the spatial variability of the shear strength of the soil is modelled by a random field, and the fluctuation of the groundwater level is modelled by a random variable. To estimate the total failure probability of the slope at a given site in a given exposure time, a recently developed sampling technique is adopted for the propagation of uncertainties, and a 2D finite difference program is used as the deterministic model for the slope stability analysis. To demonstrate the proposed approach, an illustrative example of a two-layer earth slope is studied; and, a parametric study is undertaken to investigate how the long-term performance of the slope is affected by the influencing factors. With the results presented, the versatility and effectiveness of the proposed probabilistic framework are illustrated.

UR - http://www.scopus.com/inward/record.url?scp=85018754996&partnerID=8YFLogxK

U2 - 10.1061/9780784480458.048

DO - 10.1061/9780784480458.048

M3 - 會議論文篇章

AN - SCOPUS:85018754996

T3 - Geotechnical Special Publication

SP - 472

EP - 481

BT - Geotechnical Special Publication

A2 - Brandon, Thomas L.

A2 - Valentine, Richard J.

PB - American Society of Civil Engineers (ASCE)

T2 - Geotechnical Frontiers 2017

Y2 - 12 March 2017 through 15 March 2017

ER -