DOI: 10.1007/s11069-020-03863-7
论文题名: Stochastic assessment of slope failure run-out triggered by earthquake ground motion
作者: Huang Y. ; Li G. ; Xiong M.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2020
卷: 101, 期: 1 起始页码: 87
结束页码: 102
语种: 英语
中文关键词: Probability density evolution method
; Random factors
; Run-out assessment
; Smoothed particle hydrodynamics method
英文关键词: earthquake damage
; earthquake magnitude
; earthquake trigger
; ground motion
; hydrodynamics
; landslide
; numerical model
; probability density function
; stochasticity
英文摘要: Analysis of the run-out of landslides is essential and vital for disaster mitigation. However, accurate run-out analysis is difficult because of the uncertainty of earthquake ground motion and variability of soil properties. To solve this problem, a new run-out assessment framework that combines the methods of probability density evolution and smoothed particle hydrodynamics is proposed. This novel framework can consider multiple stochastic factors and different slope failure models of changing sliding surfaces. We used a homogeneous 2D slope as an example and generated stochastic seismic loading samples with an intensity-frequency non-stationary ground motion model. Soil property parameters (cohesion and internal friction angle) were assumed to obey logarithmic normal distribution, and run-out parameters were evolved. Moreover, based on an equivalent extreme event, the distributions of final run-out parameters were obtained. In an example with slope height of 100 m and angle of 45°, the probability that the run-out distance is < 150 m is 90%. The probability of flow depth more than 24.5 m was about 50%. The new framework has the potential to provide references for coordinating relief efforts after landslides by predicting the extent and scope of the earthquake-induced hazard; thereby minimizing casualties and property losses caused by geological disasters triggered by earthquakes. © 2020, Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168532
Appears in Collections: 气候变化与战略
There are no files associated with this item.
作者单位: Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai, 200092, China; Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Tongji University, Shanghai, 200092, China
Recommended Citation:
Huang Y.,Li G.,Xiong M.. Stochastic assessment of slope failure run-out triggered by earthquake ground motion[J]. Natural Hazards,2020-01-01,101(1)