Analytical Modeling for Two-story Two-span Reinforced Concrete Frames with Relaxed Section Details

초록

A nonlinear analytical model has been proposed for two-span two-story reinforced concrete frames with relaxed sectiondetails. The analytical model is composed of beam, column, and beam-column joint elements. The goal of this study is to developa simple and light nonlinear model for two-dimensional reinforced concrete frames since research in earthquake engineeringis usually involved in a large number of nonlinear dynamic analyses. Therefore, all the nonlinear behaviors are modeled to beconcentrated on flexural plastic hinges at the end of beams and columns, and the center of beam-column joints. The envelope curveand hysteretic rule of the nonlinear model for each element are determined based on experimental results, not theoretical approach. The simple and light proposed model can simulate the experimental results well enough for nonlinear analyses in earthquakeengineering. Consequently, the proposed model will make it easy to developing a nonlinear model of the entire frame and help tosave time to operate nonlinear analyses.

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