Strength and behavior of steel plate–concrete wall structures using ordinary and eco-oriented cement concrete under axial compression

• Failure of the SC wall structures was initiated by local buckling of the surface steel plate.
• The effective buckling length factor using column theory was suggested.
• The plate buckling coefficient and stress by plate theory were proposed based on test results.
• The proposed wall strength model produced the good agreement with the test results.

The main objectives of this study are to describe the compressive behavior and to determine the squash load of steel plate–concrete (SC) wall structures using ordinary and eco-oriented cement concrete. The major parameters in this research were the material of the concrete and width–thickness (B/t) ratio of surface steel plate. Six SC wall specimens were tested in compression in this test. In the three specimens, to reduce emissions of carbon dioxide (CO2), some of the cement in weight was replaced by the Hwangtho (red clay) which is traditional and environmental material. The failure behavior, buckling behavior of the surface steel plate, the effective buckling length factors and plate buckling coefficient are discussed. Based on the test results, simplified rule was suggested to evaluate the buckling stress for surface steel plate. Several comparisons were made to evaluate the predicted strengths and test results.