FALL 2013


Shake Table Analysis of Concrete Structural Models


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.