<abstract xmlns="http://www.w3.org/1999/xhtml">

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 (<italic>UBC</italic>), and the failure patterns of adjacent strip footings are assessed by considering the Mohr-Coulomb failure criterion. The <italic>UBC</italic> is of the nearby footings (left and right) are estimated and represented in terms of interference factors (<italic>ξL/ξR</italic>) defined as the <italic>UBC</italic> 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 (<italic>S/B</italic>) is lesser, and they behave as the single footing of greater width at <italic>S/B</italic> = 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 <italic>ξL</italic> 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 <italic>ξR</italic> decreases. The increase in the peak interference factor, <italic>ξL-max</italic> for <italic>DL/B</italic> = 0.5 is 2.1% and 4.2% when <italic>DR/B</italic> = 0.75 and <italic>DR/B</italic> = 1.0, respectively.
</abstract>

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.

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

Department of Civil and Environmental Engineering

Architecture, Civil Engineering, Environment

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

The footings laid in close proximity imposes a definite change in the behaviour of the adjacent footing, subsequently changing the behaviour of the nearby...

Mechanical properties of soil
Parameters	Values
Young's Modulus (E), MPa	32
Poisson's ratio (υ)	0.3
Cohesion (c), kPa	2
Soil friction angle (ϕ), °	30°
Unit weight (γ), kg/m³	1600
Dilatancy angle (ψ), °	15°
Range of varying parameters
D_L/B	0.50, 0.75, 1.0
D_R/B	0.50, 0.75, 1.0
S/B	0.25, 0.50, 0.75, 1.0, 1.5, 2.0, 3.0, 4.0, 5.0

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

Pubblicato online: 03 feb 2023

Pagine: 93 - 103

Ricevuto: 03 feb 2022

Accettato: 18 ott 2022

DOI: https://doi.org/10.2478/acee-2022-0041

Parole chiave
Interference of footings, Embedment depth, Ultimate bearing capacity, Load-settlement behaviour

© 2022 Anupkumar G. Ekbote et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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Mechanical properties of soil and varying parameters considered in the analysis

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

Pubblicato online: 03 feb 2023

Pagine: 93 - 103

Ricevuto: 03 feb 2022

Accettato: 18 ott 2022

DOI: https://doi.org/10.2478/acee-2022-0041

Parole chiaveInterference of footings, Embedment depth, Ultimate bearing capacity, Load-settlement behaviour

© 2022 Anupkumar G. Ekbote et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Mechanical properties of soil and varying parameters considered in the analysis

Parole chiave
Interference of footings, Embedment depth, Ultimate bearing capacity, Load-settlement behaviour