Author/Authors :
Moghaddas Tafreshi، S. N. نويسنده Professor, Department of Civil Engineering, K.N. Toosi University of Technology, Valiasr St., Mirdamad Cr., Tehran,Iran Moghaddas Tafreshi, S. N. , Tavakoli Mehrjardi، Gh. نويسنده Assistant Professor, Department of Civil Engineering, Kharazmi University, Tehran, Iran , , Ahmadi، M. نويسنده ,
Abstract :
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”.
