Reliability Analysis of Grillage Flexible Slope Supporting Structure with Anchors Considering Fuzzy Transitional Interval and Fuzzy Randomness of Soil Parameters

2019 ◽  
Vol 44 (10) ◽  
pp. 8849-8857 ◽  
Author(s):  
ShuaiHua Ye ◽  
GuangWen Fang ◽  
XiaoRui Ma
Keyword(s):  
Reliability Analysis ◽  
Soil Parameters ◽  
Supporting Structure

scholarly journals Reliability Analysis of Expansive Soil Slope Stability Based on the Three-Broken Line Model

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Wenwei Li ◽  
Baotian Wang ◽  
Jinyu Zuo ◽  
Bingsheng Zhou ◽  
Haixia Zhang
Keyword(s):  
Reliability Analysis ◽  
Expansive Soil ◽  
Probability Of Failure ◽  
Rigid Bodies ◽  
Soil Parameters ◽  
Soil Slope ◽  
Safety Factors ◽  
Line Model ◽  
Stability Of Slopes ◽  
Weathered Layer

Based on the characteristics of an expansive soil slope, the slip mass can be simplified to a simpler model with three-broken line rigid bodies. A solution was formulated to calculate the safety factors of the slope, and the results are similar to those based on the strength reduction method. However, similar to conventional methods to analyze the stability of slopes, the deterministic method to obtain the safety factors only calculates the safety factor using deterministic values without considering the randomness of soil parameters, which leads to unstable results. To improve the rationality of the calculated results, this paper aims to construct a reliability analysis method based on the simplified three-broken line model of a landslide. The reliability is calculated with the response surface method in a spreadsheet with efficiency and convenience. The designed program considers the changes in the strength of the shallow soil and the depth of the strongly weathered layer for different stages of the wetting-drying cycles and solves for the probability of failure of the sliding surface at the interface between the strong and weak weathered layers. Considering an expansive soil slope as an example, the reliability of the slope was analyzed based on laboratory test data and the proposed formula. The results show that multiple wetting-drying cycles significantly increase the probability of failure of an expansive soil slope and that the slope typically becomes unstable after six wetting-drying cycles. Slope cutting helps alleviate the adverse effects of wetting-drying cycles.

Reliability Analysis of Embankment Reflecting Spatial Variability of Soil Parameters

2016 ◽  
Vol 12 (10) ◽  
pp. 149-158
Author(s):  
Dong Wook Kim ◽  
◽  
Ki Cheol Lee ◽  
Jin Ho Kim ◽  
◽  
...  
Keyword(s):  
Spatial Variability ◽  
Reliability Analysis ◽  
Soil Parameters

Reliability Analysis for Effects of Reservoir Water Level Change on Embankment Dam

2007 ◽  
Vol 340-341 ◽  
pp. 1327-1332 ◽  
Author(s):  
Bo Han ◽  
Hong Jian Liao ◽  
Kyoji Sassa ◽  
Fa Wu Wang
Keyword(s):  
Water Level ◽  
Reliability Analysis ◽  
Unsaturated Soils ◽  
Soil Parameters ◽  
Embankment Dam ◽  
Reservoir Water ◽  
Reservoir Water Level ◽  
Seepage Analysis ◽  
Embankment Dams ◽  
Unsaturated Seepage

This paper is mainly concerned with the saturated-unsaturated seepage analysis of embankment dams based on unsaturated soil theory and the reliability analysis of embankment dam based on conception of reliability. The transient seepage due to change of the water level is calculated using the finite element method based on unifying saturated-unsaturated seepage governing equations. The transient pore water pressures are then used for stability analyses of embankment dam considering the effects of suction on shear strength of unsaturated soils. Meanwhile, combined with reliability computation, the Monte-Carlo stimulation method is used to calculate the corresponding reliability index dealing with the stochastic features of soil parameters. The reliability of different water level condition of embankment dams has been analyzed. The effects of different reservoir water level drawdown and raise speeds on reliability of embankment dam are discussed.

Random field model of soil parameters and the application in reliability analysis of laterally loaded pile

2021 ◽  
Vol 147 ◽  
pp. 106821
Author(s):  
Zhang Xiao-ling ◽  
Jiao Bo-han ◽  
Han Yan ◽  
Chen Shong-loong ◽  
Li Xiu-yu
Keyword(s):  
Random Field ◽  
Reliability Analysis ◽  
Field Model ◽  
Soil Parameters ◽  
Random Field Model ◽  
Laterally Loaded Pile ◽  
Laterally Loaded

scholarly journals Local Failure and Reliability Analysis of Horizontal Struts in Deep Excavation Based on Redundancy Theory

2021 ◽  
Author(s):  
Jianhua Liu ◽  
Shaoming Wu ◽  
Linfeng Wang ◽  
Xiaohan Zhou
Keyword(s):  
Numerical Calculation ◽  
Reliability Analysis ◽  
Calculation Model ◽  
Local Failure ◽  
Deep Excavation ◽  
Large Area ◽  
Supporting Structure ◽  
The Third ◽  
Diaphragm Walls ◽  
Supporting Structures

The instability failure of many deep excavations supported by diaphragm walls (retaining piles) and horizontal struts is caused by the local failure of struts and the following large area chain effect. The lack of redundancy of struts is an important reason for the overall failure of supporting structures. In this paper, based on an actual excavation project, the numerical calculation model is established by Flac3D5.0, and the reliability of the supporting structure is analyzed based on the redundancy theory. The main conclusions are as follows: the redundancy of single support is large, and strut (6) (close to the middle of the excavation) is the most important. The redundancy is reduced due to continuous failure, and the redundancy is only 3.50 when strut (1)–(7) are all failed (half of the struts). The second row of the struts has the smallest redundancy, while the third row has the biggest redundancy.

Sign in / Sign up

Export Citation Format

Share Document