Developments in MSE Wall Research and Design

Bathurst, Richard J.

doi:10.1007/978-3-030-34242-5_3

Cited by 8 publications

(4 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…footings on bridge abutments or roads located on top of the retaining structure). The behaviour of reinforced earth structures under a strip footing load has been studied through full-scale physical models and laboratory model tests (Adams 1997;Gotteland et al 1997;Ketchart and Wu 1997;Wu et al 2001;Abu-Hejleh et al 2002;Lee and Wu 2004;Adams et al 2011;Bourgeois et al 2011;Ahmadi and Hajialilue-Bonab, 2012;Allen and Bathurst, 2015;Xiao et al 2016;Ahmadi and Bezuijen 2018;Zornberg et al 2019;Allen and Bathurst, 2019;Bathurst, 2020 ). For a footing constructed behind a reinforced earth wall, the maximum bearing capacity will depend on a number of factors (Ahmadi andHajialilue-Bonab, 2012 andXiao et al 2016), including: (1) the location of the footing in relation to the wall; (2) the type of reinforcement; (3) the number of reinforcement layers; (4) the depth to the first reinforcement layer below the footing;…”

Section: Introductionmentioning

confidence: 99%

Interaction mechanisms in small-scale model MSE walls under the strip footing load

Ahmadi

Bezuijen

Zornberg

2021

Geosynthetics International

View full text Add to dashboard Cite

The effect of preloading on mechanically stabilised earth (MSE) has remained an aspect difficult to quantify in design, particularly when considering different reinforcement types, stiffness values, and facing rigidity. This study analyses several scaled model tests on MSE walls under a strip footing load with a single unloading-reloading cycle. Scaled models were constructed as part of this investigation to expand the evaluation of previously constructed full-scale tests. The strip footing load and wall deflections were measured and compared with analytical models. The failure mechanism of the soil, before and after the strip footing load, was included in the study via the particle image velocimetry (PIV) method. The results indicate that the bearing capacity of a strip footing is higher for a rigid facing than for a flexible facing. PIV analysis results for the first and second loading step formed two failure lines with the angle (π/4 + φ/2). The deflection values in the second loading step, however, were smaller than those reached during the first loading in small-scale tests. Good agreement was observed between the proposed analytical method and experimental results for the second loading step, after taking into account the preloading effect.

show abstract

Section: Introductionmentioning

confidence: 99%

Interaction mechanisms in small-scale model MSE walls under the strip footing load

Ahmadi

Bezuijen

Zornberg

2021

Geosynthetics International

View full text Add to dashboard Cite

show abstract

“…Over the last 25 years, MSE retaining walls have become more common in many civil engineering projects. MSE walls are preferred over conventional types of retaining walls (e.g., Gravity, Semi-Gravity, Cantilever, and Counterfort) as it offers economic and technical advantages, including less site preparation and foundation requirements, diminution of acquisition of land for right-of-way, faster construction rate, sustainability in construction and stability for wall of heights more than 30 m [7][8][9][10]. The positive effects of soil reinforcement in an MSE wall come from the enhanced tensile strength of the soil and the enhanced shear resistance caused by friction at the interfaces between soil and geogrid.…”

Section: Introductionmentioning

confidence: 99%

Parametric Study of Mechanically Stabilised Earth Wall using PLAXIS

Tomar,

Lohar,

Shrivastava

2024

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Mechanically stabilised earth (MSE) walls made of steel and geosynthetic reinforcing elements are now well-established technologies. MSE walls have been increasingly used in many civil engineering projects over the last 25 years as it offers economical and technical advantages over conventional retaining walls. However, the agencies using the MSE wall are now concerned about its failure. This study is intended to presents a parametric investigation on a validated finite element model of an MSE wall to evaluate the effect of geogrid length, strength, and soil friction angle on wall displacements. In PLAXIS 2D, a total of 120 permutations are modelled by varying geogrid length, strength, and soil friction angle, while wall geometry, boundary conditions, water table, and loading conditions kept constant for all cases. On the basis of the results of this parametric study, charts are constructed to demonstrate how the extreme displacement of the MSE wall is affected by various factors. The outcomes of this parametric analysis offer insights about the behaviour of an MSE wall and important reference information for comprehending the design procedure and specifications for any MSE wall.

show abstract

“…Such systems with these loading conditions are becoming more and more common nowadays, specifically in the urban areas with condensed population and lack of suitable ground for construction purposes. Very few studies have been performed on the influence of strip footing local loading on the stability of geosynthetic-reinforced retaining walls, most of which have focused solely on case studies and service loads (Singh and Basudhar 1993;Adams 1997;Gotteland et al 1997;Ketchart and Wu 1997;Haza et al 2000;Wu et al 2001;Abu-Hejleh et al 2002;Lee and Wu 2004;Adams et al 2011;Bourgeois et al 2011;Ahmadi and Hajialilue-Bonab 2012;Bathurst 2015, 2019;Xiao et al 2016;Ardah et al 2017;Talebi et al 2017;Ahmadi and Bezuijen 2018;Zornberg et al 2019;Rahmaninezhad 2019;Xie et al 2019;Rahmaninezhad et al 2020;Bathurst 2020). In an analytical and experimental study conducted by Ahmadi and Bezuijen (2018), the influence of facing panel rigidity, base restriction and surface strip loading on the lateral deflection of the walls stabilized with geogrid layers was investigated using the results of fullscale model tests.…”

Section: Introductionmentioning

confidence: 99%

Limit Analysis of Lateral Earth Pressure on Geosynthetic-Reinforced Retaining Structures Subjected to Strip Footing Loading Using Finite Element and Second-Order Cone Programming

Mirmoazen

Lajevardi

Mirhosseini

et al. 2021

Iran J Sci Technol Trans Civ Eng

View full text Add to dashboard Cite

Stability of reinforced retaining structures under a variety of surficial loadings is of particular significance in geotechnical engineering practice. In the current study, adopting the well-established lower-bound limit analysis in conjunction with the finite element discretization method and second-order cone programming, a rigorous numerical study is carried out to evaluate the active lateral earth pressure on geosynthetic-reinforced retaining walls subjected to overlying strip footing loadings. The significant influence of the length (L e ) and number (n) of reinforcement layers, load intensity (q), width of strip footing (B) and its distance from the wall (a) on the lateral earth pressure is examined. It is shown that using reinforcements longer than a specific length fails to have any further significant contributions to the wall stability. With the increase in load intensity and width of the strip footing, the reinforcements are found to be further effectual in reducing the rate of increase in the value of active earth pressure coefficient. Moreover, the reinforcements are observed to be more effective in enhancing the rate of decrease in the earth pressure coefficient with the increase in the foundation-wall distance, up to a threshold value, beyond which they show the reverse influence.Keywords Lateral earth pressure • Geosynthetic-reinforced wall • Lower-bound • Finite element limit analysis (FELA) • Second-order cone programming (SOCP)

show abstract

Developments in MSE Wall Research and Design

Cited by 8 publications

References 40 publications

Interaction mechanisms in small-scale model MSE walls under the strip footing load

Interaction mechanisms in small-scale model MSE walls under the strip footing load

Parametric Study of Mechanically Stabilised Earth Wall using PLAXIS

Limit Analysis of Lateral Earth Pressure on Geosynthetic-Reinforced Retaining Structures Subjected to Strip Footing Loading Using Finite Element and Second-Order Cone Programming

Contact Info

Product

Resources

About