Abstract
One of the most important factors for designing a safe foundation is the amount of bearing soil capacity and allowable settlement according to the type of structure. Therefore, in geotechnical engineering, the aim is to improve foundations' bearing capacity in many ways, some of which are expensive, and the other section is difficult to implement in some sites. Skirted foundations consider as an ideal solution to improve cost-wise soil tolerance by reducing materials and installation time. At present, there are several applications, including offshore platforms, bridges, turbines, oil installations, and high-load facilities. This paper investigates the behavior of carrying capacity of skirted foundations through experimental models on the sand. To examine the effect of various saturation conditions, various ratios of length to width of the footing base at different relative densities and different conditions for saturations dry, saturated, and partially saturated soils are considered. It was found that the magnitude of soil bearing enhances with increasing ratios of length to the width of the base of the footings for all cases. The increase in performance ratio increased linearly to 1.5 in footing depth (D/B) and then decreased according to the test results after this point.
Highlights
Al-Aghbari and Mohamedzein [1] formulated the updated load-carrying capacity equation for skirted strip foundations on sand
The comparison showed that the use of structural skirts could increase the load capacity by a factor of 10 depending on the geometric and structural properties of the skirts (1.5-3.9)
Nazer and El Sawwaf [2] the ultimate bearing capacity of a circular foundation sitting on confined sand was investigated using laboratory model studies
Summary
Al-Aghbari and Mohamedzein [1] formulated the updated load-carrying capacity equation for skirted strip foundations on sand. Al-Aghbari and Mohamedzein [3] showed the results of a circle footing experiment with a skirted resting on sand have shown that this type of reinforcement increases its capacity to carry and changes its load-displacement behavior. It recommends the use of skirt factors, considering the variables affecting the loading capacity. They are integrated with a generally acceptable potential equation for shallow circular sand foundations. The use of skirts was found to reduce the settlement of surface basements in comparison to skirts
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