二维土质边坡稳定可靠性分析分层离散随机场矩方法

doi:10.13722/j.cnki.jrme.2018.0844

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Abstract In order to overcome the difficulties such as the spatial variability of correlated multi-parameters and the implicity of limit state equations in the reliability analysis of soil slope stability，a moment method based on the layered discrete random field of soil parameters was presented. According to the local average process theory and the vertical variation of soil parameters，a layered discrete random field model of soil parameters was proposed，in which the soil parameters within each soil layer are regarded as random variables and the spatial variability of the soil parameters in adjacent layers is described by variance functions. The reliability function of soil slope stability was simplified as a reduced-dimension function of soil parameters，and the reliability of the slope stability was calculated by the four-order moment method. Comparisons among the proposed method，MCS and the multi-random response surface method using slope examples were performed and a good agreement among them was illustrated.

Key words： slop engineering reliability analysis of slope stability spatial variability random field discretization local average process variance function moment method

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	Articles by authors
	CHEN Zhaohui1
	2
	LI Huanyu1
	3
	FAN Wenliang1
	2

Cite this article:

CHEN Zhaohui1,2,LI Huanyu1, et al. A moment method for reliability analysis of soil slope stability#br# based on layered discrete random field#br#[J]. , 2019, 38(2): 424-432.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2018.0844 OR http://www.rockmech.org/EN/Y2019/V38/I2/424

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