Optimal Design of Reinforced Pad Foundation and Strip Foundation

Jelušič, Primož; Žlender, Bojan

doi:10.1061/(asce)gm.1943-5622.0001258

Cited by 10 publications

(10 citation statements)

References 11 publications

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“…Jelusic and Zlender [16] presented an optimal design of pad footing based on multiparametric mixed-integer non-linear programming (MINLP) optimization. The authors developed a model in which the objective function targeted the structure production costs, subjected to design, resistance, rotation and settlement constraints within the ULS requirements of the Eurocode.…”

Section: Optimization Methods For Foundationsmentioning

confidence: 99%

Recent Tendencies in the Use of Optimization Techniques in Geotechnics: A Review

Boumezerane

2022

Geotechnics

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The use of optimization methods in geotechnics dates back to the 1950s. They were used in slope stability analysis (Bishop) and evolved to a wide range of applications in ground engineering. We present here a non-exhaustive review of recent publications that relate to the use of different optimization techniques in geotechnical engineering. Metaheuristic methods are present in almost all the problems in geotechnics that deal with optimization. In a number of cases, they are used as single techniques, in others in combination with other approaches, and in a number of situations as hybrids. Different results are discussed showing the advantages and issues of the techniques used. Computational time is one of the issues, as well as the assumptions those methods are based on. The article can be read as an update regarding the recent tendencies in the use of optimization techniques in geotechnics.

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Section: Optimization Methods For Foundationsmentioning

confidence: 99%

Recent Tendencies in the Use of Optimization Techniques in Geotechnics: A Review

Boumezerane

2022

Geotechnics

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“…It is recommended to use both B o and L o values as 0.3 m in foundation design to provide enough space for the installation of the foundation [38]. The quantity of formwork (Q f ) can be calculated by Equation (19).…”

Section: Objective Functionmentioning

confidence: 99%

“…Jelušič et al [18] proposed a cost-based mixed integer nonlinear programming (MINLP) optimization technique for the pad footing considering ULS and SLS criteria. In general, all the available cost optimization techniques for isolated footing design are either difficult to implement in most conventional practices or they are based on the structural design approach and target particular structural elements and their performance in various soil types [19,20]. In light of the literature review and to the best of the authors' knowledge, no design framework has been developed so far that not only considers the cost and safety requirements in cohesive soils simultaneously but also encompasses the quantitative impact of groundwater fluctuation on the construction cost of foundations.…”

Section: Introductionmentioning

confidence: 99%

Cost-Based Optimization of Isolated Footing in Cohesive Soils Using Generalized Reduced Gradient Method

et al. 2022

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This study presents a cost-based optimization model for the design of isolated foundations in cohesive soils. The optimization algorithm not only incorporates safety requirements in the form of ultimate limit state (ULS) and serviceability limit state (SLS) criteria but also deals with the economics simultaneously. In that regard, the generalized reduced gradient (GRG) method is used for the optimization purpose to achieve the least construction cost of an isolated foundation along with the integration of design parameters as optimization variables. The optimization technique is elaborated using a design example in silty clayey soil and the results of the optimized design are compared with those of the conventional design. The optimization model shows that the optimized design can reduce the construction cost by up to 44% as compared to the conventional design cost for the particular example. Moreover, a sensitivity analysis is also performed to evaluate the quantitative impact of cohesive soil properties, design load, and groundwater table on the construction cost. The results indicate that the construction cost majorly depends on the combined effect of four key parameters: Young’s modulus, recompression index, design load, and groundwater table.

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“…The frictional force along the column length affects the GESCs behavior, therefore the settlement differences between the pile and the surrounding ground should be considered [13]. In recent years, the horizontal (basal) geogrid reinforcement has found an area of utilization combined with column supported embankments (CSEs) over soft clay soils in circumstances of high embankment loads to create a geosynthetic reinforced column supported embankment (GRCSE) [14][15]. Cheng et al (2014) examined the ultimate load capacity of a geosynthetic reinforced column supported (GRCS) platform by analyzing the 15-month long in-situ data.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on the Deformation Behavior of Geosynthetic-Encased Stone Columns Supporting Embankments

Kahyaoğlu

DOĞAN

2022

Teknik Dergi

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The method of encasing the stone column with a proper type of geosynthetic material is a widely used technique to provide the required lateral confinement and to avoid the dispersion of granular column material into soft clay. Along with the improved ultimate load capacity and the reduced settlement and bulging, the geosynthetic encasement preserves the easy drainage ability of stone columns. This paper presents the finite element analysis results of a hypothetical embankment on a soft soil deposit which is improved by geotextile encased stone columns and geogrid reinforced sand mat on top. At first, numerical results of three dimensional (3D) finite element model (FEM) were validated via the experimental data of previous field studies. Afterward, parametric studies were carried out on the FEM considering the effect of the sand mat thickness, the stiffness of the geosynthetic reinforcement, and the geosynthetic encasing length and encasement stiffness on both the horizontal and vertical deformation of stone columns. Settlement differences between columns and soft soil in both the short term and long term were also determined. The optimum values of sand mat layer thickness, vertical encasement length, and geosynthetic stiffness are recommended to be used for preliminary designs.

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Optimal Design of Reinforced Pad Foundation and Strip Foundation

Cited by 10 publications

References 11 publications

Recent Tendencies in the Use of Optimization Techniques in Geotechnics: A Review

Recent Tendencies in the Use of Optimization Techniques in Geotechnics: A Review

Cost-Based Optimization of Isolated Footing in Cohesive Soils Using Generalized Reduced Gradient Method

Numerical Study on the Deformation Behavior of Geosynthetic-Encased Stone Columns Supporting Embankments

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