scholarly journals Integration of root systems into a GIS-based slip surface model: computational experiments in a generic hillslope environment

Landslides ◽  
2018 ◽  
Vol 15 (8) ◽  
pp. 1561-1575 ◽  
Author(s):  
Elmar M. Schmaltz ◽  
Martin Mergili
Keyword(s):  
Slip Surface ◽  
Root Systems ◽  
Computational Experiments ◽  
Surface Model

scholarly journals Effect of Slip Surface’s Continuity on Slope Dynamic Stability Based on Infinite Slope Model

Mathematics ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. 58
Author(s):  
Chuanzheng Liu ◽  
Gang Wang ◽  
Wei Han
Keyword(s):  
Dynamic Stability ◽  
Stress Wave ◽  
Safety Factor ◽  
Slip Surface ◽  
Great Influence ◽  
Stress Wave Propagation ◽  
Surface Model ◽  
Infinite Slope ◽  
Research Results ◽  
The Stability

The slip surface is an important control structure surface existing in the landslide. It not only directly affects the stability of the slope through the strength, but also affects the stress field by affecting the propagation of the stress wave. Many research results have been made on the influence of non-continuous stress wave propagation in rock and soil mass and the dynamic response to seismic slopes. However, the effect of the continuity of the slip surface on the slope dynamic stability needs further researches. Therefore, in this paper, the effect of slip surface on the slope’s instantaneous safety factor is analyzed by the theoretical method with the infinite slope model. Firstly, three types of slip surface model were established, to realize the change of sliding surface continuity in the infinite slope. Then, based on wave field analysis, the instantaneous safety factor was used to analyze the effect of continuity of slip surface. The results show that with the decreasing of slip surface continuity, the safety factor does not simply increase or decrease, and is related to slope features, incident wave and continuity of slip surface. The safety factor does not decrease monotonically with the increasing of slope angle and thickness of slope body. Moreover, the reflection of slope surface has a great influence on the instantaneous safety factor of the slope. Research results in this paper can provide some references to evaluate the stability of seismic slope, and have an initial understanding of the influence of structural surface continuity on seismic slope engineering.

Coupled Elastoplastic Analysis of Dam Seismic Stability

2013 ◽  
Vol 405-408 ◽  
pp. 2040-2048
Author(s):  
Kang Fei ◽  
Fei Tian ◽  
Qian Zheng
Keyword(s):  
Slip Surface ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Linear Analysis ◽  
Elastoplastic Analysis ◽  
Seismic Stability ◽  
Amplification Coefficient ◽  
Surface Model ◽  
Equivalent Linear ◽  
Equivalent Linear Analysis

A nonlinear procedure for coupled elastoplastic analysis of the dam seismic stability was presented in this paper. The soil nonlinear dynamic behavior was modeled using by a multiple yield surface model based on the numerical framework of u-p formulation. The strength reduction method was used to determine the factor of safety of dam slope and the location of failure surface. A case study of a 293.5 m high clay core rockfill dam was used to demonstrate the application of the method. Based on the computed results, it is founded that the maximum acceleration amplification coefficient is 1.72, which is almost 20% less than that obtained from the equivalent linear analysis. The most dangerous slip surface was at the shallow zone of the lower part of the upstream slope, which was different from the predicted location from the equivalent linear analysis. The earthquake induced pore water pressure and permanent deformation were also studied in detail.

Performance of piles with enlarged bases subject to uplift forces

1990 ◽  
Vol 27 (5) ◽  
pp. 546-556 ◽  
Author(s):  
E. A. Dickin ◽  
C. F. Leung
Keyword(s):  
Empirical Equation ◽  
Slip Surface ◽  
Surface Model ◽  
Loose Sand ◽  
Uplift Capacity ◽  
Base Diameter ◽  
Dense Sand ◽  
Centrifuge Tests ◽  
Anchor Plates ◽  
Uplift Forces

The influence of embedment, base diameter, and backfill density on the uplift behaviour of piles with enlarged bases embedded in sand was investigated in a centrifuge. Comparitive tests on straight-shafted piles are also reported. For piles in dense sand, sensible agreement was found with earlier research on anchor plates and published field data. However, uplift capacities in loose sand were considerably lower than previously observed for anchor plates. A number of theories for anchors considerably overpredict the observed capacity for belled piers in both dense and loose sand, although in the case of dense sand, reasonable values are obtained using an empirical equation derived from centrifuge tests on anchor plates and a finite element based design approach. The normally conservative vertical slip-surface model is alone in providing reasonable agreement with the surprisingly low observations for piles in loose sand. Key words: piles, uplift capacity, centrifuge tests, sand.

Comment on “Thermodynamics of the L 3 (Sponge) Phase in the Flexible Surface Model" by John Daicic et al.

1996 ◽  
Vol 6 (1) ◽  
pp. 91-93 ◽  
Author(s):  
D. Roux ◽  
F. Nallet ◽  
C. Coulon ◽  
M. E. Cates
Keyword(s):  
Surface Model ◽  
Flexible Surface ◽  
Sponge Phase

Detection of slip surface in earth slide based on mineral assemblages -An example of hydrothermal alteration zone landslide in East Hokkaido Japan-

2014 ◽  
Vol 51 (3) ◽  
pp. 106-112
Author(s):  
Hiroyuki MAEDA ◽  
Masanori KOHNO ◽  
Yoshihiko SEKISHITA ◽  
Satoshi UEMATSU ◽  
Hiroshi NAYA
Keyword(s):  
Hydrothermal Alteration ◽  
Slip Surface ◽  
Alteration Zone ◽  
Mineral Assemblages

Slip surface existing in pelitic schist of Sambagawa metamorphic belt

Landslides ◽  
2002 ◽  
Vol 39 (2) ◽  
pp. 280-281
Author(s):  
Masao YAMADA ◽  
Takayuki MAYUMI ◽  
Tadayoshi SUGISAKI ◽  
Shigeru YAMANAKA
Keyword(s):  
Slip Surface ◽  
Metamorphic Belt ◽  
Pelitic Schist

MEASUREMENT AND COMPUTATIONAL EXPERIMENTS WITHIN NEWBORN'S BRAIN COOLING PROCESS

2018 ◽  
Author(s):  
Dominika Bandoła ◽  
Andrzej J. Nowak ◽  
Ziemowit Ostrowski ◽  
Marek Rojczyk ◽  
Wojciech Walas
Keyword(s):  
Computational Experiments ◽  
Brain Cooling ◽  
Cooling Process
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