Influence of the Elastic Modulus of the Soil and Concrete Foundation on the Displacements of a Mat Foundation

Sall, Oustasse Abdoulaye; Fall, M; Berthaud, Yves; Bâ, Makhaly

doi:10.4236/ojce.2013.34027

Cited by 10 publications

(6 citation statements)

References 7 publications

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“…The behavior of the floor slab depends on loading (The Concrete Society, 2016), the thickness of the slab (Shadravan et al, 2015) and, of course, the stiffness characteristics of subgrade under the slab (Sall et al, 2013).…”

Section: Influence Of Support Conditions On the Slab Behaviourmentioning

confidence: 99%

The Engineering Method for Unifying Ground Floor Slab Settlements

Urbonas

Sližytė

Šapalas

2021

Engineering Structures and Technologies

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For industrial buildings and logistics centres truck lifts are usually used. Therefore, there are special requirements for flatness tolerance of ground floor. The ground floor settlements differences in selected distances are limited. The article reviews the behaviour of soils and the importance of the actual behaviour assessment of soils during the design of floor slab on elastic subgrade. Particular attention is given to the behaviour of floor slab areas above pile foundations that support the building’s columns. Calculation results show the impact of subgrade stiffness on the behaviour of the floor slab, especially in areas above pile foundations, where the stiffness of subgrade is much higher. The article presents a solution for achieving the required level of settlements’ differences in areas where pile foundations for the building’s columns under the ground slab are used. The paper proposes an efficient engineering method to reduce ground slab settlements differences. The results of performed calculations confirm the efficiency of presented method.

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Section: Influence Of Support Conditions On the Slab Behaviourmentioning

confidence: 99%

The Engineering Method for Unifying Ground Floor Slab Settlements

Urbonas

Sližytė

Šapalas

2021

Engineering Structures and Technologies

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“…The structural analysis software commonly models the soil by using subgrade reaction coefficients [14]. Springs that represent the behavior of the subgrade reaction under load are the basis of the soil modeling.…”

Section: Introductionmentioning

confidence: 99%

A Novel Integrated Approach to Solve Industrial Ground Floor Design Problems

et al. 2020

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The ground floors of buildings usually have high loads from racks and other storage equipment in industrial buildings and logistics centers. Such types of buildings commonly require lift trucks. Therefore, there are special requirements for flatness tolerance across and along the driving track of truck lifts. Structural design solutions must be optimized and sustainable. The article reviews the behavior of soils and the importance of the actual behavior assessment of soils during the design of the ground floor on the elastic subgrade. The behavior of the ground floor’s areas above pile foundations that support the building’s columns is essential. Calculation results show the impact of subgrade stiffness on the behavior of reinforced concrete (RC) floor slab, especially in areas above pile foundations, where the stiffness of subgrade is much higher. The research provides a solution to achieve the required level of settlement dissimilarity in areas where there are piles underneath a building slab under the columns. The paper proposes a new integrated method for the evaluation of the subgrade reaction coefficient above the pile cap. The proposed method optimizes design time and eliminates the need for specialized geotechnical software. Obtained results confirmed the efficiency of the proposed design method.

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“…In order to eliminated the bearing soil reaction as a variable in the problem solution of beam on elastic foundation, the simplified continuum Open Journal of Civil Engineering approach, with a numerical research, is presented in [17]. Study the behaviour of a math foundation on subsoil from the plate theory taking into account the soil-structure interaction, and several model have been described, presented in [18]. Very important work related to subgrade reaction and analysis of beams on elastic foundation is [4] [5] [19].…”

Section: Introductionmentioning

confidence: 99%

Bending the Foundation Beam on Elastic Base by Two Reaction Coefficient of Winkler’s Subgrade

Balabušić¹,

Folić²,

Ćorić³

2019

OJCE

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A new method for analysis of counter beams is presented in the paper. The analysis has taken into account their stiffness EI, Winkler's space with modulus of subgrade reaction k and equality deformities of the foundation beam with the ground. The solution is found by using the numerical analysis of the Winkler's model, with variation of different moduli of the subgrade reaction k 2 outside the force zone r, while under the force P exists the modulus of the subgrade reaction k, up to the definition of minimum bending moments. The exponential function k 2 (r), as the geometric position of the minimum moments is approximately assumed. From the potential energy conditions of the reciprocity of displacement and reaction, the width of the zone r and the modulus of the subgrade reaction k 2 are explicitly determined, introducing in the calculation initial and calculation soil displacement w si successively. At the end of the paper, it presented numerical example in which the influence of k and k 2 values on bending moments of the counter beam is analyzed. The essential idea of this paper is to decrease the quantity of the reinforcement in the foundations, beams, i.e. to obtain a cost-efficient foundation construction. KeywordsFoundation Beam, Winkler's Model, Coefficient of Subgrade Reaction Modulus k and k 2 , Zone r under the Force P, Soil Displacement w si

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Influence of the Elastic Modulus of the Soil and Concrete Foundation on the Displacements of a Mat Foundation

Cited by 10 publications

References 7 publications

The Engineering Method for Unifying Ground Floor Slab Settlements

The Engineering Method for Unifying Ground Floor Slab Settlements

A Novel Integrated Approach to Solve Industrial Ground Floor Design Problems

Bending the Foundation Beam on Elastic Base by Two Reaction Coefficient of Winkler’s Subgrade

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