Abstract
The authors have investigated the elastic-plastic behavior of the steel and concrete composite columns (SC column) and the beam-to-column connections composed SC columns and wide flange beams against severe earthquakes. The SC column is an octagonal sectional column composed of cross-shaped steel and concrete. A pulling experiment of connection for SC columns and steel flanges was carried out in order to make clear the difference of welded connection details on the behaviors of connection between a column flange and a beam flange with outer diaphragms and band-plates. The authors have performed FEM analysis and performed a comparison with the experiment behavior, and have made clear the difference of connection details on the behavior of frameworks quantitatively by performing numerical analysis. From these results, we will discuss the design method for beam-to-column connection composed of SC columns and wide flange beam where stress transmission mechanism is clear, and construction is simple.
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