Behaviour of eccentrically loaded strip footings resting on sand

Abstract

This paper presents the results of experimental and numerical studies on the bearing capacity behaviour of an eccentrically loaded strip footing resting on geosynthetic-reinforced sand. The investigations were carried out by varying the footing width, load eccentricity, type of reinforcement and the relative density of the sand. Furthermore, finite-element analysis was conducted to evaluate the benefits of using reinforcement under eccentrically loaded strip footing. The results indicate that the footing width and load eccentricity have a great effect on the bearing capacity factor Nγ values. For 1g models, the footing width B would be >110 mm, which is the smallest width of model foundation that should be used to determine the ultimate bearing capacity. At a load eccentricity (e/B) equal to 0·1, the ultimate bearing capacity increased by about 38 and 67% when the sand was reinforced with geotextile and geogrid, respectively. The difference between the ultimate bearing capacities obtained from the experimental results and numerical analyses varied from 10 to 14%. From prototype-scale numerical results, it was evident that the geogrid reinforcement increased the ultimate bearing capacity by about 12–24% when the load eccentricity (e/B) varied from 0·0 to 0·3.

Utilization of Sand Cushion for Stabilization of Peat Layer Considering Dynamic Response of Compaction

“…The elongation at maximum load is 10% that corresponding to tensile strength from the strip test method of 20.1 kN/m. The length of the geotextile was taken thee time of plate diameter (3d) [23,24]. In this study, the definition of the ultimate bearing capacity at failure was distinct as the tangent intersection between the initial, straighter segment of the loading-stress-settlement curve and the next steeper, straight part of the curve [17].…”

Planar geosynthetic-reinforced soil foundations: a review

“…Hussein and Meguid [79] Finite element ABAQUS 3D Square Geogrid Badakhshan and Noorzad [59] Finite element ABAQUS 3D Circular, Square Geotextile Lai and Yang [80] Finite difference FLAC 2D Strip Geotextile Nasr and Azzam [60] Finite element PLAXIS 2D Strip Geogrid, Geotextile Oliaei and Kouzegaran [19] Finite difference FLAC 3D Square Planar geosynthetic, Geocell Venkateswarlu et al [20] Finite difference FLAC 3D Square Geogrid, Geocell Gao and Meguid [23] Discrete element PFC 3D Square Geogrid Ouria and Mahmoudi [81] Finite element -Strip Geotextile Aria et al [82] Finite element PLAXIS 3D Strip Wraparound geotextile Zidan and Mohamed [17] Finite element PLAXIS 2D Strip Geogrid Wang et al [24] Discrete element PFC 2D Strip Geogrid…”

“…Schematic view of the layout of closely spaced square footing and circular footing. S is the center to center distance between two footings Type of loading applied to the footings: a uniform loading (adopted from[2]); b eccentric loading (adopted from[60]) and c repeated loading (adopted from[61]) Vol. :(0123456789) SN Applied Sciences (2020) 2:2074 | https://doi.org/10.1007/s42452-020-03930-5 Review Paper…”

Finite Element Analysis for Improving the bearing capacity of Existed strip footing s ABSTRACT 1

“…The choice of approach is influenced by factors like the kind of the existing foundation, the effectiveness of it, the engineering-geological stratification characteristics in site, the level of the groundwater table in site, the design of the building, the acting load on the foundation, etc. On the other hand, the bearing capacity of eccentrically footings with dissimilar sizes and configuration studied by (Nawghare et al 2010) [14] . The results of unlike footings are compared with focus and eccentric forces.…”