Behavior of Strip Footing/s above Void in Sandy Soil
Received: 17 November 2022 | Revised: 4 December 2022 | Accepted: 12 December 2022 | Online: 25 December 2022
Corresponding author: Assma Benbouza
Abstract
This paper presents a numerical study that utilizes finite element analysis under the plain strain condition performed on sand with isolated strip footing and two closely spaced strip footings above a continuous void. The Bearing Capacity Ratio (BCR) and the efficiency factor ζγ were introduced to determine the effect of the void on the ultimate bearing capacity of footing/s. The influence of various parameters including spacing (S/B) (i.e. edge to edge) between the two interfering footings along with the location and the shape of the void were studied. In general, the results indicate that the presence of a void reduces the bearing capacity and affects the performance of footing/s and there is a critical value of S/B beyond which the effect of the void on the bearing capacity of the interfering footings becomes negligible.
Keywords:
interfering footings, bearing capacity, strip footing, finite element method, underground voids, granular soilDownloads
References
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