Determining optimal designs for geosynthetic-reinforced soil bridge abutments

Jelušič, Primož; Žlender, Bojan

doi:10.1007/s00500-019-04127-8

Cited by 8 publications

(2 citation statements)

References 24 publications

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“…In the design process of a geosynthetic reinforced soil or mechanically stabilized earth wall (MSE), a crucial step involves verifying the stability of a conceptual entity known as the fictitious structure [27,28]. This structure comprises the front face of the MSE wall and a curve that bounds the end points of the geo-reinforcements.…”

Section: Modeling Of the Retaining Wallmentioning

confidence: 99%

Sustainable Retaining Wall Solution as a Mitigation Strategy on Steep Slopes in Soft Rock Mass

Jelušič,

Vlastelica,

Žlender

2024

Geosciences

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Steep slopes in soft rock are characterized by their susceptibility to instability (rockfall, rockslide) due to weathering and erosion of the slope surface. This article deals with the problem of adapting to the increasing height of the scree slope. The construction of a retaining wall in a scree slope in front of a slope of soft rock with a steep face, where a very rapid weathering and erosion process of weathered material takes place, and the simultaneous deposition of material in front of the steep slope is a common solution. Changes in the geometry of the slope and the front scree are taken into account, and at the same time, sufficient safety against rockfall must be ensured. The analysis is shown on a specific example of a steep flysch slope near Split, Dalmatia. The retaining wall solutions are compared in terms of function, cost and sustainability. The construction of a single colossal, reinforced concrete retaining wall shows that this solution is not feasible due to the high construction costs and CO2 emissions of the retaining wall. A model was therefore developed to determine the height of the retaining walls for different construction time intervals and distances from the original rock face. The critical failure modes were investigated for various retaining wall solutions with regard to the highest degree of utilization of the resistance, which also allows the cost-optimized solutions to be determined. By building two or more successive retaining walls at suitable intervals and at an appropriate distance from the original rock face, construction costs and CO2 emissions can be significantly reduced.

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Section: Modeling Of the Retaining Wallmentioning

confidence: 99%

Sustainable Retaining Wall Solution as a Mitigation Strategy on Steep Slopes in Soft Rock Mass

Jelušič,

Vlastelica,

Žlender

2024

Geosciences

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“…Kravanja et al [19] discussed a comparative study of an optimal design for composite steel-concrete floor structures based on the multiparametric mixed-integer nonlinear programming (MINLP) approach. The multiparametric optimization approach has also been applied in the field of geotechnical engineering, e.g., in the design of piled embankments with basal reinforcement [20,21], conventional [22,23] and geothermal energy piles [24,25], reinforced pad and strip foundations [26,27] and geosynthetic-reinforced soil bridge abutments [28]. Several studies have evaluated the sustainability of the most common earth retaining walls such as gabion walls, crib walls, masonry walls, mechanically stabilized earth walls and reinforced concrete walls.…”

Section: Introductionmentioning

confidence: 99%

Multiparametric Analysis of a Gravity Retaining Wall

2021

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The design of a gravity retaining wall should be simple to construct, quick to build and the best economic solution to a problem. This can be achieved by using advanced optimization methods. Since geotechnical engineers are not always able to determine the exact soil properties and other project data, an optimal design of a gravity retaining wall should also be determined for a wide range of input parameters. Therefore, a multiparametric analysis of an optimal designed gravity retaining wall was carried out. Optimum designs of gravity retaining walls were obtained for 567 combinations of different design parameters. Diagrams were developed to help engineers determine the optimum section of the wall, based on construction costs. An exhaustive search was carried out within the available parameters (project data). The parameters were ranked according to which had the most influence on the optimum cost of the gravity retaining wall and the utilization of multiple constraints. The most important parameter for the optimal cost of a gravity retaining wall is the height of the retained ground, followed by the shear angle of the soil, the soil–wall interaction coefficient, the slope angle and the variable surcharge load. The shear angle of the soil is most relevant to the bearing capacity and eccentricity condition, while the soil–wall interaction coefficient is most relevant to the sliding condition. Since European countries apply different load, material and resistance safety factors, the optimization model was developed in a general form, where different design approaches and unit prices could be applied. The case study provides an improved optimization model for selecting the optimal design of gravity walls, for engineers.

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Construction of a Geosynthetic-Reinforced Soil Bridge Abutment in Slovenia

Jelušič

Žlender

2021

Challenges and Innovations in Geomechanics

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Determining optimal designs for geosynthetic-reinforced soil bridge abutments

Cited by 8 publications

References 24 publications

Sustainable Retaining Wall Solution as a Mitigation Strategy on Steep Slopes in Soft Rock Mass

Sustainable Retaining Wall Solution as a Mitigation Strategy on Steep Slopes in Soft Rock Mass

Multiparametric Analysis of a Gravity Retaining Wall

Construction of a Geosynthetic-Reinforced Soil Bridge Abutment in Slovenia

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