Effects of Backfill Soil on Excessive Movement of MSE Wall

Hossain, Md. Sahadat; Kibria, Golam; Khan, Mohammad Sadik; Hossain, J.; Taufiq, T.

doi:10.1061/(asce)cf.1943-5509.0000281

Cited by 44 publications

(14 citation statements)

References 4 publications

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“…Nevertheless, field monitoring and experimental tests are costly and time-consuming (Bergado and Teerawattanasuk 2008;Desai and El-Hoseiny 2005;Abdelouhab et al 2011). As an alternative, computer-based numerical modeling can be used for the design, parametric studies, and forensic investigation of MSE walls (Karpurapu and Bathurst 1995;Hossain et al 2012). According to Collin (1986), the computer program adopted for the design and analysis of MSE walls should be able to model structural components, construction sequence, soil behavior, and interface elements.…”

Section: Numerical Modeling Of Mse Wallmentioning

confidence: 99%

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Influence of Soil Reinforcement on Horizontal Displacement of MSE Wall

2014

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Mechanically stabilized earth (MSE) walls offer simple construction techniques, pleasing aesthetics, and cost-effective solutions as an alternative to conventional gravity walls. However, design and construction should be carefully evaluated to achieve satisfactory performance of the wall. A case study is presented on a MSE wall located on State Highway 342 in Lancaster, Texas. The horizontal movement of the MSE wall was between 300 and 450 mm within 5 years of construction. A forensic investigation was performed to determine the causes of the excessive movement. It was identified that inadequate reinforcement length was one of the contributing factors that caused horizontal displacement of the MSE wall. The objective of this study was to determine the effects of soil reinforcement on excessive movement of the MSE wall. As a part of the forensic investigation, two inclinometers were installed at the site to monitor any additional movement of the MSE wall. The inclinometer results suggested that the wall continued to move at an average rate of 4.5 mm/month during the investigation period. A finite-element (FE) program was used to simulate horizontal displacement and stability of the MSE wall. It was observed that the numerical modeling results were in good agreement with inclinometer results. A parametric study was conducted to identify the effects of soil reinforcement on horizontal movement at varied wall heights and backfill conditions. Numerical analyses results indicated that the effect of reinforcement stiffness was not significant at a wall height of 4 m compared with 8 and 12 m. The wall movement varied from 74 to 29 mm for an increase in reinforcement stiffness from 250 to 42,000 kN=m at 1:0H reinforcement length. The variations in displacement with reinforcement lengths suggested that substantial reduction in displacement occurred for an increase in length-height (L=H) ratio from 0.5 to 0.7. FE modeling results were used for sensitivity analysis employing a statistical analysis program. Based on the analyses, reinforcement length and stiffness were identified as influential factors for the horizontal displacement of MSE walls at a specific height.

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Section: Numerical Modeling Of Mse Wallmentioning

confidence: 99%

“…An extensive forensic investigation was performed using conventional soil test borings, geophysical testing (resistivity imaging), installation of inclinometers, and numerical modeling. Details on the geotechnical and geophysical testing can be found in the study conducted by Hossain et al (2012).…”

Section: Introductionmentioning

confidence: 99%

Influence of Soil Reinforcement on Horizontal Displacement of MSE Wall

2014

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“…Excessive lateral deformation of wall, loss of shear resistance of the fill, vertical settlement of reinforced fill, cracking and aesthetics problems were also reported in walls that allowed high fines/high plasticity soils in the reinforced zone. Mitchell and Zornberg (1995), Koerner and Soong (2001), Koerner et al (2005), Yoo and Jung (2006) and Hossain et al (2012) have reported various geogrid reinforced soil wall failures. Case studies of wall failures have mentioned that the use of poor quality backfill (or marginal backfill) and lack of proper drainage measures are few of the major reasons for the wall failures.…”

Section: Introductionmentioning

confidence: 98%

Performance evaluation of geogrid reinforced soil walls with marginal backfills through centrifuge model tests

Balakrishnan

Viswanadham

2016

Geotextiles and Geomembranes

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“…Nevertheless, field monitoring and experimental tests are costly and time-consuming [4]. As an alternative, computer-based numerical modeling can be used for the design, parametric studies, and forensic investigation of MSE walls [5].…”

Section: Introductionmentioning

confidence: 99%

Behaviour of MSE Wall with different Soil Properties and Reinforcement Length

Hulagabali¹

2018

IJRASET

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The Mechanically Stabilised Earth (MSE) retaining wall is used as an alternative designed structure for conventional cast-in-place concrete type walls and gravity walls. The MSE wall behaves as a coherent block considered as flexible, which can sustain loading types and deformations due to the interaction between the backfill and the inclusion materials. The construction of MSE walls is cost effective, requires less site preparation, and is technically more feasible. MSE wall behaviour highly depends upon type of reinforcement and backfill used in the system. However, use of backfill with high fine content and poor drainage behavior can cause excessive wall movement or even failure. In the present study, MSE wall was modelled using finite element numerical tool PLAXIS 2D, to study the effect of backfill and reinforcement on MSE wall behaviour. Wall deformations were analysed by varying soil parameters such as, soil friction angle and unit weight soil of retained and foundation soil. It was observed that, as the friction angle of the foundation soil increased, wall deformations were reduced. Also, it was seen that, length of the reinforcements has significant effect on wall deformations. Deformations were reduced as the length of reinforcements increased.

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Effects of Backfill Soil on Excessive Movement of MSE Wall

Cited by 44 publications

References 4 publications

Influence of Soil Reinforcement on Horizontal Displacement of MSE Wall

Influence of Soil Reinforcement on Horizontal Displacement of MSE Wall

Performance evaluation of geogrid reinforced soil walls with marginal backfills through centrifuge model tests

Behaviour of MSE Wall with different Soil Properties and Reinforcement Length

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