Designing Soil-Nailed Walls Using the Amherst Wall Considering Problematic Issues during Execution and Service Life

Garzón-Roca, Julio; Capa-Guachon, Vicente Eduardo; Echarri, Francisco Javier Torrijo

doi:10.1061/(asce)gm.1943-5622.0001453

Cited by 12 publications

(7 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A stability analysis that leads to a safety factor greater than 1.0 does not guarantee the slope to be stable, especially when involving large areas, as is the case under study. Besides, it should be noted that limit equilibrium methods do not consider deformations, so a slope may be unstable sometimes even though the safety factor is greater than 1.0, as reported in some cases found in the literature [50].…”

Section: Discussionmentioning

confidence: 94%

A Case Study of a Large Unstable Mass Stabilization: “El Portalet” Pass at the Central Spanish Pyrenees

et al. 2021

Self Cite

View full text Add to dashboard Cite

This case study presents the engineering approach conducted for stabilizing a landslide that occurred at “El Portalet” Pass in the Central Spanish Pyrenees activated due to the construction of a parking lot. Unlike common slope stabilization cases, measures projected here were aimed at slowing and controlling the landslide, and not completely stopping the movement. This decision was taken due to the slow movement of the landslide and the large unstable mass involved. The degree of success of the stabilization measures was assessed by stability analyses and data obtained from different geotechnical investigations and satellite survey techniques such as GB-SAR and DinSAR conducted by different authors in the area under study. The water table was found to be a critical factor in the landslide’s stability, and the tendency of the unstable slope for null movement (total stability) was related to the water table lowering process, which needs more than 10 years to occur due to regional and climatic issues. Results showed a good performance of the stabilization measures to control the landslide, demonstrating the effectiveness of the approach followed, and which became an example of a good response to the classical engineering duality cost–safety.

show abstract

Section: Discussionmentioning

confidence: 94%

A Case Study of a Large Unstable Mass Stabilization: “El Portalet” Pass at the Central Spanish Pyrenees

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…The parameters, thus, deduced is used for the feasibility analysis of the reinforcement and stabilization of the slope, by the nailed wall technique, after the earthworks and the realization of the new railroad. The stability of the nailed walls is generally evaluated based on a global safety factor (SF) under a predefined failure mechanism [21], [22]. During our site visits, we noted that the slope has held up fairly well for several decades, which is to say as soon as the first railway line was put in place.…”

Section: B Analysis Of the Stability Of The Existing Slopementioning

confidence: 99%

Application of the Nailing Technique to Stabilize a Slope in a Section of the Twinning of Road and Rail Infrastructure

Ouakkass¹,

Ouadif²,

Akhssas³

2022

International Journal on Advanced Science, Engineering and Information Technology

View full text Add to dashboard Cite

Nailing is one of the most widely used stabilization techniques because of its technical and economic advantages. It is a practical and effective solution for the reinforcement of in-place slopes. It consists of placing in the soil high resistance nails to increase the cohesion of the soil and its resistance to traction and shear, which allows having a new material of great capacity. In this paper, we present the slope stability study in a section twinning of the road and railroad infrastructures between the kilometer points (KP) 105+938 and 106+263 of the line connecting Casablanca to Marrakech. The railroad track's topographic constraints and geometric requirements made the nailing method appeal to the realization of the new railroad in this area. The objective of this work is, on the one hand, to present the stability analysis of the slope before the earthwork and the implementation of the new railroad and, on the other hand, to evaluate the performance and stability of the nailed walls. The stability analysis of the soils in this section was verified in terms of safety coefficient using the calculation software TALREN. In the end, it can be concluded that the stability calculation results are conclusive and allow for highlighting the effectiveness of the innovative solution of nailing. This technique can be considered a good alternative to improve the safety and performance of excavation walls.

show abstract

“…The groundwater effect has yet to be included in this study as the water table is located 10 m below the excavation pit. In the absence of a groundwater table, there will be no excess pore-water pressure generated [9,19,27,35]; hence, a drain analysis has been performed throughout this study.…”

Section: Materials' Propertiesmentioning

confidence: 99%

A Numerical Study of a Soil-Nail-Supported Excavation Pit Subjected to a Vertically Loaded Strip Footing at the Crest

Gui,

Rajak

2024

Buildings

View full text Add to dashboard Cite

Soil nailing is a prevalent and cost-effective technique employed to reinforce and enhance the stability of precarious natural or cut slopes; however, its application as a primary support system to prevent collapses or cave-ins during foundation excavation could be more frequent. To better understand the behavior of such a support system, this study simulated a full-scale nail-supported excavation for the foundation pit of a 20-story building to examine the effect of placing a strip footing with various combinations of configurations on the crest of the excavation pit. The results are discussed in terms of the nail axial force, wall horizontal deflection, basal heave, and safety factor against sliding. The results show that the footing width and setback distance are the two most significant factors dominating the wall horizontal deflection. This study also reveals that the maximum axial force is closely related to the apparent active earth pressure, which accounts for the presence of a tension crack, at nail depth. Such a finding allows engineers to assess and mitigate the risks of structural failure more effectively and optimize the design of nail-retaining structures.

show abstract

Designing Soil-Nailed Walls Using the Amherst Wall Considering Problematic Issues during Execution and Service Life

Cited by 12 publications

References 32 publications

A Case Study of a Large Unstable Mass Stabilization: “El Portalet” Pass at the Central Spanish Pyrenees

A Case Study of a Large Unstable Mass Stabilization: “El Portalet” Pass at the Central Spanish Pyrenees

Application of the Nailing Technique to Stabilize a Slope in a Section of the Twinning of Road and Rail Infrastructure

A Numerical Study of a Soil-Nail-Supported Excavation Pit Subjected to a Vertically Loaded Strip Footing at the Crest

Contact Info

Product

Resources

About