Abstract
The research investigates the nonlinear behavior of reinforced concrete plates based on soil by using the finite elements method. This investigation has done by using computer program (DARC3) that mean Dynamic Analysis of Reinforced Concrete in 3D which is written in (FORTRAN) language and it is modified in this study to include the effect of elastic subgrade reaction soil using Winkler’s method under effect of different static loads. 20-node isoparametric brick elements are used to represent the nonlinear behavior of reinforced concrete plate, the reinforcement idealized by smeared layer within brick elements, assuming perfect bond between the steel and the concrete. The finite elements results are obtained the load-deflection response. The effects of boundary conditions, plate thickness, type of load and the modulus of vertical subgrade reaction of the soil layer are studied, it is shown that in case of increasing the subgrade reaction values and plate thickness lead to decreasing in the deflection and vice versa. Also it is shown that the fixed boundaries give less deflection than that in case of simply supported boundaries. The results obtained from this study are compared with the previous study, and good agreements results are obtained with percentage (1.52%).
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