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DETERMINATION OF ULTIMATE LOAD CAPACITY OF CONICAL AND PYRAMIDAL SHELL FOUNDATIONS USING DIMENSIONAL ANALYSIS | ||
| Iranian Journal of Science and Technology Transactions of Civil Engineering | ||
| شناسنامه علمی شماره، دوره 37، C+، اسفند 2013، صفحه 423-435 اصل مقاله (129.35 K) | ||
| شناسه دیجیتال (DOI): 10.22099/ijstc.2013.1797 | ||
| چکیده | ||
| Surveys of the literature indicate that shell foundations are economical structural elements which can be considered as the alternatives of flat foundations. However, the advantage of shell elements in geotechnical engineering has not been explored yet, and these foundations are still being treated as flat footings. The objective of this study is to investigate the geotechnical behavior of two types of shell foundations under axial loading and present a comprehensive formulation for bearing capacity of such foundations. For this purpose, a series of laboratory tests were carried out on six types of shell foundations, namely conical and pyramidal shell foundations. Different shell foundation geometries and Buckingham-Pi theorem were employed to formulate the ultimate load capacity. Experimental results from previous investigations on shell footings were used to verify the proposed formulations. Results of the present laboratory tests have indicated that the pyramidal shell foundations show higher bearing capacities compared to their corresponding conical ones and as the thickness of foundation increases, bearing capacity decreases. Also, load bearing capacity equations of shell foundations determined from dimensional analysis have shown a reasonably good agreement with experimental results. | ||
| کلیدواژهها | ||
| Shell foundation؛ Buckingham-Pi theorem؛ non-dimensional parameter؛ laboratory test؛ ultimate load capacity؛ experimental investigation | ||
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