Interference of Surface and Embedded Three Strip Footings in Undrained Condition

Alzabeebee, Saif

doi:10.1007/s40515-021-00172-9

Cited by 12 publications

(4 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Terefore, a Hardening constitutive model was chosen to simulate the strain behavior of soils in fnite element analysis. Te neighboring foundation footings have been extensively studied theoretically and experimentally over the past decades [10,18,19,29]. However, the authors in this study consider hardening soil models for the possible infuence of stifness in a soil mass due to loading, unloading, and stress path history to model soil behavior subject to interference efects of the closely spaced foundation footing.…”

Section: Soil Modelmentioning

confidence: 99%

“…However, consistent and precise settlement prediction has yet to be achieved using various methods ranging from strictly empirical to complex nonlinear fnite elements [10][11][12][13]. Te most widely used methods were empirical/analytical methods [14][15][16][17], experimental methods [2,[18][19][20][21][22], and numerical modeling/fnite element methods [19,20,23,24].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Interference Effect of Closely Spaced Foundation Footing on Settlement Variation

Melese,

Genemo,

Boru

et al. 2023

Advances in Civil Engineering

View full text Add to dashboard Cite

Industrialization and urbanization have run into situations where the construction of buildings is close to each other. This closeness arises due to the restricted available space in a practical construction manner. Such a situation was a reason for the cause of footing of the same and adjacent structures coming closer. This condition causes interference effects, soil-structure interaction, and the stress zone impact to behave differently other than the continuum soil media in the vicinity under the base of the foundation due to overlap stress distribution, which results in excessive foundation settlement. Therefore, the study aims to assess the interference effect of closely spaced footing on settlement variation. In this regard, comprehensive experimental soil properties were conducted using the American Society for Testing and Materials (ASTM) testing procedures to characterize soil behavior. The interference of two footings in the settlement is studied using 3D finite element analysis. The hardening soil was used to model the foundation soil medium using the Plaxis 3D program. Certain vital factors of two neighboring footings for differing maximum loads, distance, embedment ratio, soil layer, and groundwater level are discovered to impact overlapping footing influence. It is observed that the spacing between the footings increases, and the interference impact on the overlapping footings declines, reaching the isolated footing condition at spacing higher than five foundation footing dimensions and increasing when the spacing between the footings decreases.

show abstract

Section: Soil Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Interference Effect of Closely Spaced Foundation Footing on Settlement Variation

Melese,

Genemo,

Boru

et al. 2023

Advances in Civil Engineering

View full text Add to dashboard Cite

show abstract

“…Many researchers have studied the problem by performing small-scale laboratory or field tests, as well as by conducting theoretical or numerical analyses on an unreinforced soil medium. These studies have implemented different theoretical or numerical techniques, such as a method of stress characteristics (Graham et al, 1984;Kumar and Ghosh, 2007a); upper bound limit analysis (Kumar and Kouzer, 2008;Kumar, 2008, 2010;Kumar and Ghosh, 2007b;Yang et al, 2017;Biswas and Ghosh, 2018;Keawsawasvong et al, 2021;Yodsomjai et al, 2021); lower bound limit analysis Bhattacharya, 2010, 2013;Shiau et al, 2021;Keawsawasvong and Boonchai Ukritchon, 2022); the finite difference method (Ghazavi and Lavasan, 2008;Ghosh and Sharma, 2010;Mabrouki et al, 2010;Lavasan and Ghazavi, 2012b;Javid et al, 2015;Lavasan et al, 2017); the finite element method (Lee et al, 2008;Lee and Eun, 2009;Kumar and Bhoi, 2010;Nainegali et al, 2013Nainegali et al, , 2018Nainegali et al, , 2019Noorzad and Manavirad, 2014;Zidan and Mohamed, 2019;Sekhar et al, 2020;Shokoohi et al, 2019;Fuentes et al, 2019;Ekbote and Nainegali., 2019a, b;Sekhar et al, 2020;Alzabeebee, 2020Alzabeebee, , 2022Ekbote et al, 2022); the analytical method Saran, 2003b, 2004;Ghos...…”

Section: Introductionmentioning

confidence: 99%

Study on Closely Spaced Asymmetric Footings Embedded in a Reinforced Soil Medium

Ekbote,

Nainegali

2023

Ing. Inv.

View full text Add to dashboard Cite

In practice, footings are rarely laid on the surface or at ground level; usually, they are embedded in the soil medium. Most studies focus on surface footings. This research examines the behavior of two interfering asymmetric footings while considering their widths to be dissimilar and the effect of embedment depth to enhance the ultimate bearing capacity and limit the settlement within the working range. This was evaluated through the finite element method of the ABAQUS software. The soil was assumed to have a Mohr-Coulomb failure, and the asymmetry corresponded to the footing widths. The results are presented in terms of interference factors, i.e., the ultimate bearing capacity (UBC) and the settlement, which are defined as the UBC/settlement ratio of the left/right footing in the presence of the other one placed on reinforced soil. This, in comparison with an identical isolated footing on unreinforced soil. Interference is more significant in small footings than in large ones. Due to behavioral variations, the bearing capacity and settlement are different. This effect increases with an increase in the width of large footings, and the interference factors decrease with an increase in the embedment depth of the footings. When the right footing width is twice that of the other and considering one layer of reinforcement and soil friction angles of 30º and 40º, the percent increments in the bearing capacity of interfering left footings, for a spacing of 0,5 times the left footing width, are 104 and 148%, respectively.

show abstract

“…Several reports are published after the pioneering work reported by Stuart [1] using different analytical/numerical methods and experimental observations. The studies offering the understanding of two or multiple interfering footings using analytical/numerical methods use upper and lower bound limit analysis [2][3][4][5][6][7], finite difference method [8][9][10], finite element method [11][12][13][14][15][16][17][18] and analytical method [19,20], the probabilistic method [21] and others [22]. Then several experimental studies [23][24][25][26][27][28][29] have been reported on the interference of surface footings.…”

Section: Introductionmentioning

confidence: 99%

Behavioural Assessment on Influence of Adjacently Placed Strip Footings at Different Embedment Level

Ekbote¹,

Nainegali

Rajhans

et al. 2022

Architecture, Civil Engineering, Environment

View full text Add to dashboard Cite

The footings laid in close proximity imposes a definite change in the behaviour of the adjacent footing, subsequently changing the behaviour of the nearby footings. The present study emphasises the behaviour of the nearby strip footings embedded at a different level by adopting the commercially available finite element analysis program, ABAQUS. The load-settlement behaviour, ultimate bearing capacity (UBC), and the failure patterns of adjacent strip footings are assessed by considering the Mohr-Coulomb failure criterion. The UBC is of the nearby footings (left and right) are estimated and represented in terms of interference factors (ξL/ξR ) defined as the UBC of a footing in the presence of adjacent footing to that of same considered for equivalent isolated footing. The results reveal that a significant influence of the adjacent footing is experienced when the spacing between the footings (S/B) is lesser, and they behave as the single footing of greater width at S/B = 0.25 irrespective of the level of embedment depth. Furthermore, the influence of interference increases with the increase in the embedment depth of adjacent footing. It is found that the ξL is significantly more for a lower level of embedment depth, and the same increases with an increase in the embedment depth of the right footing but on the contrary ξR decreases. The increase in the peak interference factor, ξL-max for DL/B = 0.5 is 2.1% and 4.2% when DR/B = 0.75 and DR/B = 1.0, respectively.

show abstract

Interference of Surface and Embedded Three Strip Footings in Undrained Condition

Cited by 12 publications

References 38 publications

Interference Effect of Closely Spaced Foundation Footing on Settlement Variation

Interference Effect of Closely Spaced Foundation Footing on Settlement Variation

Study on Closely Spaced Asymmetric Footings Embedded in a Reinforced Soil Medium

Behavioural Assessment on Influence of Adjacently Placed Strip Footings at Different Embedment Level

Contact Info

Product

Resources

About