International Journal of Civil Engineering

en Experimental and numerical investigation on circular footing subjected to incremental cyclic loads Soil Mechanics Classic Soil Mechanics Classic Research Paper Research Paper The results of laboratory model tests and numerical analysis on circular footings supported on sand bed under incremental cyclic loads are presented. The incremental values of intensity of cyclic loads (loading, unloading and reloading) were applied on the footing to evaluate the response of footing and also to obtain the value of elastic rebound of the footing corresponding to each cycle of load. The effect of sand relative density of 42%, 62%, and 72% and different circular footing area of 25, 50, and 100cm2 were investigated on the value of coefficient of elastic uniform compression of sand (CEUC). The results show that the value of coefficient of elastic uniform compression of sand was increased by increasing the sand relative density while with increase the footing area the value of coefficient of elastic uniform compression of sand was decreases. The responses of footing and the quantitative variations of CEUC with footing area and soil relative density obtained from experimental results show a good consistency with the obtained numerical result using “FLAC-3D”. Experimental model, Numerical model, Coefficient of elastic uniform compression, Circular footing, Footing area,Sand relative density 265 274 http://ijce.iust.ac.ir/browse.php?a_code=A-10-448-2&slc_lang=en&sid=1 S. N. Moghaddas Tafreshi nas_moghaddas@kntu.ac.ir 1800319475328460010216 1800319475328460010216 Yes K.N. Toosi University of Technology Gh. Tavakoli Mehrjardi g_tavakoli2000@yahoo.com 1800319475328460010217 1800319475328460010217 No K.N. Toosi University of Technology M. Ahmadi mgtmajid23@yahoo.com 1800319475328460010218 1800319475328460010218 No K.N. Toosi University of Technology