Landslide Stabilization Using Soil Nail and Mechanically Stabilized Earth Walls: Case Study

Turner, John P.; Jensen, Wayne

doi:10.1061/(asce)1090-0241(2005)131:2(141)

Cited by 41 publications

(14 citation statements)

References 1 publication

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“…Also, Yin & Xu [21] reported on the expedience of installing soil nail for supporting a foundation pit. Besides, comparative work between soil nail and mechanical slope stabilization methods can be found in Turner & Jensen [22]. Numerical simulations and computational refinement of slope stabilization analysis were also reported, as exemplified in works by Li [23], Dahal et al [3] and Farshidfar & Nayeri [24].…”

Section: Introductionmentioning

confidence: 99%

Screw-in Soil Nail for Slope Reinforcement Against Slip Failure: A Lab-Based Model Study

Chan¹

2017

geomate

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Slope failures occur when the shear resistance along the slip plane is exceeded. This can be caused by excessive load imposed at the slope crest or compromised stability of the slope, e.g. disturbed dimensions of the slope. In order to prevent slope failure, stabilisation or reinforcement measures need to be taken. A common solution is to intercept the slope failure plane with reinforcement elements, such as soil nails and ground anchors. In soil nailing, reinforcement bars are installed on the slope to effectively resist the additional shear forces from the imposed loads, hence reducing the probability of failure in the long run. This paper describes the innovation of soil nail with screw-in installation mechanism instead of the conventional push-in approach. The screw-in installation ensures better soil-nail grip and less disturbance during the slope stabilisation procedure, especially in terms of noise and spoils. In addition, the novel nail has a hollow stem which improves shear resistance with greater soil-nail surface contact on the inner wall. The opening at the nail head also enables displaced air to escape as the nail is screwed into the slope and soil pushed into the inner hollow cavity. The prototype nails were tested in a slope model with different configurations, and were found to reduce the Angular Distortion Ratio by 37 % and the Volumetric Deformation Index as much as 33 % respectively. The novel screw-in soil nail could be potentially used to stabilize natural and man-made slopes, though full-scale simulations are recommended to formulate the installation procedure and to validate the effectiveness.

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Section: Introductionmentioning

confidence: 99%

Screw-in Soil Nail for Slope Reinforcement Against Slip Failure: A Lab-Based Model Study

Chan¹

2017

geomate

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“…Numerous numerical and physical studies have been conducted to study the behavior, stability and performance of geosynthetic reinforced retaining structures subjected to various conditions, including layered or soft foundation, differential settlement and limited reinforced space (Rowe and Skinner, 2001;Mandal and Joshi, 1996;Viswanadham and Konig, 2009;Leshchinsky et al, 2004), surcharge loadings (Yoo and Jung, 2008;Yoo and Kim, 2004), seismic loadings (Huang et al, 2011), and low permeable backfill (Raisinghani and Viswanadham, 2011). Some literature of field studies reported the successful design and satisfactory performance of this type of structures (Chang et al, 1991;Turner and Jensen, 2005). However, the literature presents and discusses a rather limited number of failure cases in regards to a further understanding of their original design and failure mechanism.…”

Section: Introductionmentioning

confidence: 99%

Lessons learned from three failures on a high steep geogrid-reinforced slope

Liu

Yang

et al. 2012

Geotextiles and Geomembranes

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“…Some the prominent studies on the application of soil nail walls include Briaud and Lim (1997), Wong et al (1997), Murthy et al (2002), Turner and Jensen (2005), Yang (2007) and Sivakumar Babu et al (2007). Turner and Jensen (2005) studied a landslide stabilisation system using tiered soil nail walls and a mechanically stabilised earth wall, and demonstrated the feasibility of utilising soil nail walls for stabilisation of active landslides, extending the application of soil nailing beyond its traditional scope of stabilisation of cut-slopes or for potentially unstable slopes. Yang (2007) presented a case study wherein a remedial earth-retaining system consisting of a soil nail wall retaining the upper soil while propped piles at the toe of the wall was developed to augment the overall stability of the sides of a basement excavation in an urban district of Wuhan City, China.…”

Section: Introductionmentioning

confidence: 99%

Soil nailing for rehabilitation of reinforced earth wall distress

Babu¹,

Singh²,

Murthy³

2011

Proceedings of the Institution of Civil Engineers - Ground Impr

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In the present study, an investigation was performed to assess the possible cause of distress to the geogrid reinforced earth walls constructed for a flyover. The investigation methodology included site visits and observations, collection of the material samples (backfill and geogrid) for laboratory testing, and back analyses of original design using a conventional method and numerical analysis. The temporary rise of pore water pressure due to the heavy rains during the construction period and the internal stability of reinforced earth walls have been identified as the possible causes of the observed distresses. Further, installation of the driven soil nails of specified diameter and length at suitable spacings, particularly in the locations of distress, were proposed as the rehabilitation measure. The results of the numerical analyses indicated that introduction of soil nails: (a) caused redistribution of axial forces among the geogrid layers and soils, (b) significantly reduced the lateral displacement and (c) improved the overall stability of the reinforced earth walls.

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Landslide Stabilization Using Soil Nail and Mechanically Stabilized Earth Walls: Case Study

Cited by 41 publications

References 1 publication

Screw-in Soil Nail for Slope Reinforcement Against Slip Failure: A Lab-Based Model Study

Screw-in Soil Nail for Slope Reinforcement Against Slip Failure: A Lab-Based Model Study

Lessons learned from three failures on a high steep geogrid-reinforced slope

Soil nailing for rehabilitation of reinforced earth wall distress

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