Numerical evaluation of the performance of a Geosynthetic Reinforced Soil-Integrated Bridge System (GRS-IBS) under different loading conditions

Ardah, Allam; Abu-Farsakh, Murad; Voyiadjis, George Z.

doi:10.1016/j.geotexmem.2017.07.005

Cited by 47 publications

(39 citation statements)

References 15 publications

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“…A detailed description for each model case is provided in the following subsections. The GRS-IBS and GRS with FHR have been adopted by advanced countries in Asia as well as in Europe, overthrowing the conventional bridges because of its economical, construction, and structural advantages [9][10][11][12]15,16]. In the Philippines, no literature has shown that this technology has been used to date.…”

Section: Description Of the Bridge Modelsmentioning

confidence: 99%

“…The GRS-IBS includes a GRS abutment, reinforced soil foundation (RSF), bearing bed reinforcement, bridge seat, and an integrated approach. In this study, the bridge is assumed to have a clear span length of 15.0 m in order to accommodate four-lane traffic under the bridge and a clear height of 5.3 m, just enough to pass the FHWA minimum vertical clearance for roadways which is specified as 4.3-4.9 m. The bearing width (b) used is 1.5 m (>0.762 m minimum), similar to the design of Maree Michel's GRS IBS [15]. The setback distance (a b ) between the back of the wall facing and the beam seat used is 250 mm.…”

Section: Grs-ibs Model Designmentioning

confidence: 99%

“…The GRS-IB composed of a GRS RW as a bridge abutment with a staged-construction full height rigid (FHR) facing and integrated with the continuous reinforced concrete (RC) girder on top of the FHR facing without bearings and joint is depicted in Figure 2 [9][10][11][12][13][14]. The GRS-IBS and GRS with FHR have been adopted by advanced countries in Asia as well as in Europe, overthrowing the conventional bridges because of its economical, construction, and structural advantages [9][10][11][12]15,16]. In the Philippines, no literature has shown that this technology has been used to date.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Analyses on the Behavior of Geosynthetic-Reinforced Soil: Integral Bridge and Integrated Bridge System

Won

Langcuyan

2021

Applied Sciences

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Geosynthetic-reinforced soil (GRS) technology has been used worldwide since the 1970s. An extension to its development is the application as a bridge abutment, which was initially developed by the Federal Highway Administration (FHWA) in the United States, called the GRS—integrated bridge system (GRS-IBS). Now, there are several variations of this technology, which includes the GRS Integral Bridge (GRS-IB) developed in Japan in the 2000s. In this study, the GRS-IB and GRS-IBS are examined. The former uses a GRS bridge abutment with a staged-construction full height rigid (FHR) facing integrated to a continuous girder on top of the FHR facings. The latter uses a block-faced GRS bridge abutment that supports the girders without bearings. In addition, a conventional integral bridge (IB) is considered for comparison. The numerical analyses of the three bridges using Plaxis 2D under static and dynamic loadings are presented. The results showed that the GRS-IB exhibited the least lateral displacement (almost zero) at wall facing and vertical displacements increments at the top of the abutment compared to those of the GRS-IBS and IB. The presence of the reinforcements (GRS-IB) reduced the vertical displacement increments by 4.7 and 1.3 times (max) compared to IB after the applied general traffic and railway loads, respectively. In addition, the numerical results revealed that the GRS-IB showed the least displacement curves in response to the dynamic load. Generally, the results revealed that the GRS-IB performed ahead of both the GRS-IBS and IB considering the internal and external behavior under static and dynamic loading.

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Section: Description Of the Bridge Modelsmentioning

confidence: 99%

Section: Grs-ibs Model Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Numerical Analyses on the Behavior of Geosynthetic-Reinforced Soil: Integral Bridge and Integrated Bridge System

Won

Langcuyan

2021

Applied Sciences

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“…The behavior of geosynthetic-reinforced approach embankments over foundations treated by columns and/or piles is usually studied numerically (e.g. Ardah et al, 2017;Chen et al, 2012;Cui et al, 2019aCui et al, , 2019bLiu et al, 2019). Authors just initiated a preliminary study to investigate the dynamic responses of the transition zone of bridge approach backfilled with fiber-reinforced lightweight concrete by finite element method (Liu et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Assessment of the use of fiberglass-reinforced foam concrete in high-speed railway bridge approach involving foundation cost comparison

Liu

Fei

et al. 2019

Advances in Structural Engineering

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In view of the limited use of foam concrete for backfilling high-speed railway bridge approach and no publication considering the associated foundation treatment cost, this article presents a series of laboratory tests to study the mechanical properties of fiberglass-reinforced foam concrete with different contents of fiberglass, whereby the optimal values of target density and fiberglass content for fiberglass-reinforced foam concrete are obtained. A numerical model is developed to investigate the performance of bridge approach filled with fiberglass-reinforced foam concrete under different levels of foundation treatment in comparison with the control group with traditional backfills (combination of graded crushed stone and cement). Results indicate that the application of fiberglass-reinforced foam concrete to fill high-speed railway bridge approach can significantly improve the bridge approach performance (decreasing the horizontal displacement and ground surface settlement, respectively, by 58% and 21% than the control group) and cut down the foundation treatment cost by 19% concurrently.

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“…A few numerical studies were conducted recently to evaluate the composite behavior of the GRS-IBS [e.g. [23][24][25][26][27]12].…”

Section: Introductionmentioning

confidence: 99%

Evaluating the Performance of Geosynthetic Reinforced Soil-Integrated Bridge System (GRS-IBS) under Working Stress Condition

2019

Self Cite

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This paper evaluates the performance of geosynthetic reinforced soil-Integrated Bridge System (GRS-IBS) in terms of lateral facing deformation and strain distribution along geosynthetics. Simulations were conducted using 2D PLAXIS program. The hardening model proposed by Schanz et al. [1] was used to simulate the behavior of backfill material; the backfill-reinforcement interface was simulated using Mohr-Coulomb model, and the reinforcement and facing block were simulated using linear elastic models. The numerical model was verified using the results of a case study conducted at Maree Michel GRS-IBS, Louisiana. Parametric study was carried out to investigate the effects of span length, reinforcement spacing, and reinforcement stiffness on the performance of GRS-IBS. The results indicate that span length have significant impact on strain distribution along geosynthetics and lateral facing deformation. The reinforcement stiffness has significant impact on the GRS-IBS behavior up to a certain point, beyond which the effect tends to decrease contradictory to reinforcement spacing that has a consistent relationship between the GRS-IBS behavior and reinforcement spacing. The results also indicate that reinforcement spacing has higher influence on the lateral facing deformation than the reinforcement stiffness for the same reinforcement strength/spacing ratio (Tf/Sv) due to the composite behavior of closely reinforcement spacing.

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Numerical evaluation of the performance of a Geosynthetic Reinforced Soil-Integrated Bridge System (GRS-IBS) under different loading conditions

Cited by 47 publications

References 15 publications

Numerical Analyses on the Behavior of Geosynthetic-Reinforced Soil: Integral Bridge and Integrated Bridge System

Numerical Analyses on the Behavior of Geosynthetic-Reinforced Soil: Integral Bridge and Integrated Bridge System

Assessment of the use of fiberglass-reinforced foam concrete in high-speed railway bridge approach involving foundation cost comparison

Evaluating the Performance of Geosynthetic Reinforced Soil-Integrated Bridge System (GRS-IBS) under Working Stress Condition

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