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Studia Geotechnica et Mechanica
Édition 40 (2018): Edition 4 (December 2018)
Accès libre
Stability of Road Earth Structures in the Complex And Complicated Ground Conditions
Andrzej Batog
Andrzej Batog
et
Elżbieta Stilger-Szydło
Elżbieta Stilger-Szydło
| 26 sept. 2018
Studia Geotechnica et Mechanica
Édition 40 (2018): Edition 4 (December 2018)
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Article Category:
Research Article
Publié en ligne:
26 sept. 2018
Pages:
300 - 312
Reçu:
18 oct. 2018
Accepté:
31 oct. 2018
DOI:
https://doi.org/10.2478/sgem-2018-0028
Mots clés
slope stability
,
road embankments
,
transport engineering
,
soft soils
© 2018 Andrzej Batog, Elżbieta Stilger-Szydło, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Figure 1
Scheme of the Bishop method (simplified).
Figure 2
Bolków ring road, cross section of km 0 + 150.02: stability according to EC7 of embankment made of non-cohesive soil.
Figure 3
Bolków ring road, cross section of km 0 + 150.02: stability according to EC7 of embankment made of cohesive soil, along with the substrate
Figure 4
Cross section of km 0 + 796.18 – computational scheme.
Figure 5
Cross section of km 0 + 796.18 – stability calculations (distribution of displacements) of the embankment made of cohesive soilg = 20.5 kN/m3, ϕ = 17°, c = 22 kPa, according to Eurocode 7 (Fmin = 1.17 >Freq = 1.0)
Figure 6
Computational scheme.
Figure 7
Potential mechanism of the loss of stability – green-blue block in the right slope..
Figure 8
System of ground layers. Phase 1 of calculations – state before performance of a road excavation.
Figure 9
System of ground layers. Phase 2 of calculations – state with road load after the performance of a road excavation
Figure 10
Phase 2 of calculations – stability analysis of the upper part of the slope above the road excavation, Fmin = 1.88.
Figure 11
Phase 2 calculations – stability analysis of lower part of the slope below the road excavation Fmin = 2.01.
Figure 12
Current profile of the road O8 slope at km 0 + 105.00.
Figure 13
Designed slope profile of the road O8 excavation in the cross section of km 0 + 105.00
Figure 14
Results of stability calculations of the slope Fmin = 1.40.
Values of partial factors recommended for use in the analysis of slope stability
Partial factors
Design approach
1
2
3
Combination 1
Combination 2
A
γ
G
1.35
1.0
1.35
1.0
*
γ
Gfav
1.0
1.0
1.0
1.0
γ
Q
1.5
1.3
1.5
1.3
*
M
γ
tanφ '
1.0
1.25
1.0
1.25
γ
c
'
1.0
1.25
1.0
1.25
γ
γ
1.0
1.0
1.0
1.0
R
γ
R
;
e
1.0
1.0
1.1
1.0