Dynamic Response Analyses for Shake Table Tests of Full-Scaled Reinforced Concrete Bridge Column Model

Abstract eng:
A series of dynamic response analyses for shake table tests of a full-scaled reinforced concrete bridge column model was conducted, and the effect of viscous damping properties, structural modeling on the accuracy of the analyses was investigated. The specimen analyzed is the one that is designed to be failed in flexure at the bottom of the column, and was tested on the E-Defense in 2007. A test setup used is consisted of two girders supported by bearings on the tested specimen and the end-supports. Two analytical models are considered, and the results are compared; one is a simple single-column model and the other is an entire system model including the idealization of the girders and the bearings. The nonlinear behavior of the reinforced concrete column is idealized with fiber elements for both the models. The analyses underscored that it is important to idealize the bearing supports adequately. Almost zero damping provides good agreement with the test results.

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