气候变化领域集成服务门户(CCPortal): Stochastic assessment of slope failure run-out triggered by earthquake ground motion

CCPortal

DOI	10.1007/s11069-020-03863-7
	Stochastic assessment of slope failure run-out triggered by earthquake ground motion
	Huang Y.; Li G.; Xiong M.
发表日期	2020
ISSN	0921030X
起始页码	87
结束页码	102
卷号	101 期号:1
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.
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
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/205733
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
推荐引用方式 GB/T 7714	Huang Y.,Li G.,Xiong M.. Stochastic assessment of slope failure run-out triggered by earthquake ground motion[J],2020,101(1).
APA	Huang Y.,Li G.,&Xiong M..(2020).Stochastic assessment of slope failure run-out triggered by earthquake ground motion.Natural Hazards,101(1).
MLA	Huang Y.,et al."Stochastic assessment of slope failure run-out triggered by earthquake ground motion".Natural Hazards 101.1(2020).