Numerical Study of the Effect of the Shape and Area of Shallow Foundations on the Bearing Capacity of Sandy Soils

Alnmr, Ammar; Alsirawan, Rashad

doi:10.12700/aph.21.1.2024.1.7

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…Numerous researchers have conducted parametric studies to investigate the interaction between the soil and surface structures [10][11][12]. Also, recent studies have compared numerical analysis results with field measurements obtained from constructed projects to analyze the SSIs [13,14].…”

Section: Brief Literature Reviewmentioning

confidence: 99%

Settlement Analysis of Concrete-Walled Buildings Using Soil–Structure Interactions and Finite Element Modeling

Patrício,

Gusmão,

Ferreira

et al. 2024

Buildings

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This study examines the performance of mat foundations in 13 blocks of eight-story concrete-walled residential buildings. Topographic monitoring bolts were used to monitor the slab’s construction, which was 0.35 m thick and comprised an area of 225 m2. Using the collected data, a retro-analysis of the modulus of elasticity was conducted to obtain the geotechnical parameters for forecasting the settlement using the elasticity theory. A nonlinear approach for construction modeling and soil–structure interactions showed that the earthworks at the start of construction had a significant role in settling. Blocks in landfills settled faster than those in land-cut zones. The partial execution of building levels was found to be critical in terms of angular distortions and stresses in the concrete slab. The partial lifting of the foundation plate was confirmed in blocks with partial building floor execution, demonstrating the importance of assessing the foundation’s behavior at this stage. The modulus of elasticity dropped as construction progressed, with landfill parts being particularly vulnerable. Creep settlements contributed significantly, accounting for about 20% of the total settlements in some blocks. The numerical staged construction model accurately replicated the behaviors observed in the monitoring data, confirming the hypothesis of the partial raising of the foundation during the building process, which resulted in higher angular distortions. Based on the results obtained, the authors strongly recommend that the simultaneous consideration of soil–structure interactions and construction effects be commonly used in foundation designs.

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Section: Brief Literature Reviewmentioning

confidence: 99%

Settlement Analysis of Concrete-Walled Buildings Using Soil–Structure Interactions and Finite Element Modeling

Patrício,

Gusmão,

Ferreira

et al. 2024

Buildings

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The Role of Utilizing Load in Different Cases While Numerical Modeling of Multi-story Buildings on Alluvial Stratum: A Comparison Study

Arslan,

Kayaturk,

Durmus

et al. 2024

Arab J Sci Eng

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Industrialization and population growth have made surface areas more valuable, thereby the multi-story buildings have become an absolute necessity. At this point, numeric models became the fastest and simplest way to evaluate the response of soils and structures. The issued factor in the current paper is related to the way of transferring the multi-story building loads to an alluvial stratum and evaluate the accuracy of different cases, in order to save time and economy. For load transfer, the first case (case i) includes uniform distributed load, the second case (case ii) includes the transfer from the basement columns and walls, and the third case (case iii) includes modeling the real state of the building. Mainly, all three cases gave close results in terms of settlement magnitudes of 2.21, 1.96, and 1.81 cm, respectively. It was inspected that case (i) showed 12.8% more deformation than case (ii) and 22.1% more deformation than case (iii). However, the situation is not the same for the settlement pattern, and the under-column and corner effects are neglected in uniform load. Additionally, the bending moments, which is a critical parameter for the design of a reinforced concrete foundation, have developed different results. In case (ii) and (iii) a bending moment of 500 kNm/m is observed in the center column, while in case (i) the moments converge to 0. Therefore, this study highlights the importance of outstanding decision making when assessing the load-transferring mechanism in modeling with numerical methods. The necessity of the determination of the convenient load transfer way depending on the parameter that is crucial in the evaluation of the soil–structure interaction comes to the fore with current paper.

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An Experimental and Numerical Investigation of Strip Footing Behavior on Geogrid-Reinforced Embankment Resting on Soft Soil

Nandi,

Bhowmik,

Hussain

2024

Journal of Testing and Evaluation

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The study aims to assess the impact of geogrid reinforcement on embankments over soft soil subjected to strip loading through experimental and finite element method–based numerical analyses. Various factors, including footing location, geogrid depth, length, and the number of layers, were systematically varied to evaluate their influences on the bearing capacity of strip footing on top of slope. The study shows that an increase of up to 75 % in bearing capacity was observed for the reinforced slopes with the use of multiple geogrid layers at optimum depths and lengths. Further, the optimum number of geogrid layers is contingent upon the footing location. Moreover, the effectiveness of single basal reinforcement for different footing locations and dimensions was explored, and an improvement of up to 34.5 % was observed in bearing capacity. Further, the results indicate that effective improvement in bearing capacity through basal reinforcement is only possible when the failure zone penetrates the interface between the embankment and base soil. Otherwise, the use of multiple layers of reinforcement at shallower depths is proved to be more effective.

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Numerical Study of the Effect of the Shape and Area of Shallow Foundations on the Bearing Capacity of Sandy Soils

Cited by 3 publications

References 16 publications

Settlement Analysis of Concrete-Walled Buildings Using Soil–Structure Interactions and Finite Element Modeling

Settlement Analysis of Concrete-Walled Buildings Using Soil–Structure Interactions and Finite Element Modeling

The Role of Utilizing Load in Different Cases While Numerical Modeling of Multi-story Buildings on Alluvial Stratum: A Comparison Study

An Experimental and Numerical Investigation of Strip Footing Behavior on Geogrid-Reinforced Embankment Resting on Soft Soil

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