Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Three-dimensional modified pseudo-dynamic analysis of reinforced slopes with inclined soil nails
Abstract This study aims to develop an effective approach to conduct the three-dimensional (3D) modified pseudo-dynamic stability analysis of slopes reinforced using inclined soil nails. Based on the 3D discrete failure mechanism, the factor of safety (FoS) for the soil nailed slope is determined using a method that integrates the upper-bound limit analysis approach and the strength reduction technique. The incline angle of soil nails that is neglected in previous literature for 3D seismic stability analysis of slopes using analytical methods is also considered in the calculation of the FoS. The modified pseudo-dynamic approach is introduced to properly incorporate the impact of seismic loads into the analysis of slope stability. The proposed method is validated by comparisons with existing analytical solutions and numerical results, showing that the proposed method is an effective approach to assess the seismic stability of soil nailed slopes. Finally, the effect of model parameters on the calculated FoS of the soil nailed slope is presented. The parametric analysis shows that the effects of seismic actions on the slope stability are greatly influenced by the ratios of seismic acceleration for the slope crest to the slope toe, and there exists an optimal incline angle of the soil nail to achieve the best reinforcement.
Three-dimensional modified pseudo-dynamic analysis of reinforced slopes with inclined soil nails
Abstract This study aims to develop an effective approach to conduct the three-dimensional (3D) modified pseudo-dynamic stability analysis of slopes reinforced using inclined soil nails. Based on the 3D discrete failure mechanism, the factor of safety (FoS) for the soil nailed slope is determined using a method that integrates the upper-bound limit analysis approach and the strength reduction technique. The incline angle of soil nails that is neglected in previous literature for 3D seismic stability analysis of slopes using analytical methods is also considered in the calculation of the FoS. The modified pseudo-dynamic approach is introduced to properly incorporate the impact of seismic loads into the analysis of slope stability. The proposed method is validated by comparisons with existing analytical solutions and numerical results, showing that the proposed method is an effective approach to assess the seismic stability of soil nailed slopes. Finally, the effect of model parameters on the calculated FoS of the soil nailed slope is presented. The parametric analysis shows that the effects of seismic actions on the slope stability are greatly influenced by the ratios of seismic acceleration for the slope crest to the slope toe, and there exists an optimal incline angle of the soil nail to achieve the best reinforcement.
Three-dimensional modified pseudo-dynamic analysis of reinforced slopes with inclined soil nails
Chen, Guang-Hui (Autor:in) / Zou, Jin-Feng (Autor:in) / Yang, Tao (Autor:in) / Shi, He-Yang (Autor:in)
2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
BKL:
56.00$jBauwesen: Allgemeines
/
38.58
Geomechanik
/
38.58$jGeomechanik
/
56.20
Ingenieurgeologie, Bodenmechanik
/
56.00
Bauwesen: Allgemeines
/
56.20$jIngenieurgeologie$jBodenmechanik
RVK:
ELIB18
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