Innovative Reinforced Soil Structures for High Walls and Slopes Combining Polymeric and Metallic Reinforcements

Lelli, Matteo; Laneri, Riccardo; Rimoldi, P.

doi:10.1016/j.proeng.2015.11.099

Cited by 4 publications

(1 citation statement)

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“…Lelli et al [11] showed a case study of hybrid reinforce soil wall constructed in India, Albania, and Turkey. The walls were constructed using geogrid as a primary reinforcement and steel wires as secondary reinforcement.…”

Section: Introductionmentioning

confidence: 99%

Seismic Deformation Behaviour of Segmental Geogrid Reinforced Soil Wall

Ajuda¹

2021

GEOMATE

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This paper presents results from a series of 1g shaking table tests on seismic deformation behaviour of segmental geogrid reinforced soil walls using multiple reinforcement stiffness along the wall. The reinforcement stiffness arrangement along the wall height was uniform, alternating and grouped schemes. During the experimental program, digital image analysis technique was employed to capture the failure mechanism and distribution of shear strains in the backfill. It was found that the facing wall deformation strongly depends on the reinforcement stiffness arrangement. The deformation of the models consisted of overturning, sliding, and bulging. By constructing walls with alternating reinforcement stiffness, similar deformation behaviour compared to uniform reinforcement stiffness was observed. However, placing weak reinforcement stiffness either in the upper half or lower half of the wall height, large deformation occurred in these locations, and bulging deformation was observed. The shear strains were also dependent on the reinforcement arrangement prior to critical acceleration. The highest values of shear strains were observed in walls constructed in a grouped arrangement.

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Section: Introductionmentioning

confidence: 99%

Seismic Deformation Behaviour of Segmental Geogrid Reinforced Soil Wall

Ajuda¹

2021

GEOMATE

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Donatılı Zeminler için Alternatif Hafif Kompozit Panel Elemanları

EVİRGEN,

TUNABOYU,

BÜYÜK

et al. 2023

UUJFE

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Steel reinforced concrete facing members, which are used to fix geosynthetic reinforcements working against tensile forces inside soils and to resist active lateral earth pressures, have certain disadvantages, such as massiveness and corrosion. In addition, the aforementioned conventional panels are not economical since they frequently require maintenance and repair in terms of long-term stability. In this study, the utility of alternative composite panels is evaluated with the various arrangement and type of fiber reinforcements and a typical foam concrete. Panel tests and three-point bending tests are realized to determine the experimental behavior of steel, carbon fiber (CFRP) and glass fiber reinforced (GFRP) specimens, as well as unreinforced examples. Although CFRP wrapped specimens cannot reach expected levels, samples with GFRP present favorable performance as well as being cheaper. Specimens with mat GFRP enhance both strength and deformation capacities according to the results of axial and lateral deformations under diagonal loading condition. In addition, chopped GFRP applied foam concrete specimens have more strength in terms of bending test results, but CFRP reinforcements increase their displacement capacity.

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Seismic Responses of GRS Walls with Secondary Reinforcements Subjected to Earthquake Loading

Liu

Hung

2020

Applied Sciences

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Secondary reinforcement has been proven to be effective in increasing the performance of geosynthetic-reinforced soil (GRS) walls under working stress conditions, enabling an eco-friendlier environment. However, the seismic responses of GRS walls with secondary reinforcements are still unclear. In this study, in-depth finite element analyses were used to investigate the seismic responses of GRS walls with secondary reinforcement subjected to earthquake motions. The numerical procedure was first validated using measurements obtained from both a field GRS wall with secondary reinforcement and benchmark large-scale shaking table tests. Then, the validated GRS walls procedure was utilized to explore the effects of secondary reinforcement length and stiffness, the vertical spacing of the primary reinforcement, and wall height on the seismic responses. Based on the study, the following findings can be drawn: (i) the secondary reinforcement length and stiffness under various wall heights and peak ground accelerations (PGAs) have a limited influence on the relative lateral facing displacement and acceleration amplification, however, they can significantly decrease the connection load and the maximum reinforcement load; (ii) increasing the length of the secondary reinforcement is more effective for reducing the connection load and the maximum reinforcement load than increasing the stiffness of the secondary reinforcement; (iii) the effect of secondary reinforcement is more evident for greater wall height, the larger vertical spacing of primary reinforcement, and smaller PGA; and (iv) GRS walls with secondary reinforcement could ease the acceleration amplification. The study has highlighted the salient effect of secondary reinforcement on GRS wall performance under seismic conditions.

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Innovative Reinforced Soil Structures for High Walls and Slopes Combining Polymeric and Metallic Reinforcements

Cited by 4 publications

References 0 publications

Seismic Deformation Behaviour of Segmental Geogrid Reinforced Soil Wall

Seismic Deformation Behaviour of Segmental Geogrid Reinforced Soil Wall

Donatılı Zeminler için Alternatif Hafif Kompozit Panel Elemanları

Seismic Responses of GRS Walls with Secondary Reinforcements Subjected to Earthquake Loading

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