FALL 2013
Shake Table Analysis of Concrete Structural Models
by
Md. Zakir Hossain & Md. Nazmul Hasan
The experimental and numerical investigations carried out on concrete structural
models subjected to seismic ground shaking are presented in this paper. Sixteen
concrete column models consisting of those without and with four types of
confinement are tested to investigate the seismic behavior of the structures
using earthquake shake table.
Model to prototype ratio 1:3.68 is used, because the EI Centro earthquake plate
used in shake table in the Structural Mechanics and Strength of Materials Lab at
University of Asia pacific (UAP) was calibrated from the original EI Centro
earthquake (1940) ground data divided by a scaling factor 3.68.
Three different types of confinement are used here including confinement by wire
mesh, tape and Fiber Reinforced Polymer (FRP). The shake table experiment result
shows that the confined structural models have greater capacity in terms of
strength and ductility than the unconfined structural models. And among this
three confined structure, FRP confined models show better seismic resistance
capacity than the models confined by wire mesh and tape.
Numerical analysis is done by FORTRAN programming and the comparison between
experimental and numerical results shows a very good agreement in terms of
maximum displacement of structural models.