Considering the nonlinear behavior of R.C.C.,
parametric studies are performed in this thesis to investigate some important
details of the dynamic behavior of R.C.C. structures. Simple three-dimensional
frames are taken for nonlinear dynamic analysis under combined vertical load and
seismic vibrations on the short direction of a number of buildings (2, 5 and 10
storied). In this study the ground motion data from two earthquakes; i.e. El
Centro earthquake, USA (1940) and Kobe earthquake, Japan (1995) are used.
dynamic analyses are conducted on 2, 5 and 10 storied buildings with adequate
structural dimensions. The maximum shear forces often occur in the critical
central beam and columns of these buildings, which are taken for illustration of
the results. Described in this study are the differences in the shear forces and
deflections obtained from 2D nonlinear, 3D nonlinear and 3D linear analysis. The
failure criteria and permanent deformations of the structural members are two of
the most important characteristics studied in the nonlinear analyses.