Abstract
This study describes a study on the geotechnical behavior of shell footing using a non-linear finite element analysis with a finite element code, PLAXIS. The shell footing is found to have a better load carrying capacity compared with the conventional slab/flat footing of similar cross sectional area. The FE analysis also showed a reasonably good agreement with the laboratory experimental results. The effect of adding edge beams at the bottom of the shell footings has been studied numerically and found to be beneficial in increasing the load carrying capacity of the footing. The effect of increasing the embedment ratio is found to increase the load carrying capacity of the shell footings
Highlights
Concept of shell is not new in foundation design, considering construction in past with inverted brick arch foundation in this category
Shell footing is limited to a few geometries, such as conical, pyramidal, hypar and spherical footings and these footings are shown in Fig. 1-4, respectively
Computer Sci., 2 (1): 104-108, 2006 conducted a finite element analysis for conical shell footing to study the effects of increasing soil modulus
Summary
Concept of shell is not new in foundation design, considering construction in past with inverted brick arch foundation in this category. The conical shell (Fig. 1) is the simplest form of shell, which can be employed in foundation engineering due to its singly curved surface. The hyperbolic paraboloid (hyper) shell (Fig. 3) is a doubly curved anticlastic shell, which has translation as well as ruled surfaces This footing has potential to be employed in a wide range of application in foundation engineering. Spherical shells (Fig. 4) do not posses straight-line property, which makes its construction more complex. It can only be used as an isolated footing. J. Computer Sci., 2 (1): 104-108, 2006 conducted a finite element analysis for conical shell footing to study the effects of increasing soil modulus. The effects of adding edge beams at the bottom of the footing and depth of embedment of the footings, on the load carrying capacity of the footing are investigated using the FE analysis
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