| Title |
Hysteretic Behavior of Reinforced High-strength Concrete Beam-Column Joint Under Load Reversals |
| Abstract |
The objective of this experimental research is to study the behavior of reinforced high-strength concrete beam-column subassemblies subjected to reversed repeated loadings. The experimental results from reversed repeated loading tests on seven beam-column subassemblies constructed with high-strength concrete are presented. The primary variables were the concrete strength, the loading rate, and the ratio of the column to beam flexural capacity.Finally, it is concluded that the test results, which is designed by ACI Building Code(318-83) and ACI-ASCE 352 Recommendation(1985) based on normal concrete test results, within the limitation of this study, is comparatively satisfactory behaviors under displacement ductility of 5. The hysteretic behavior of reinforced high-strength concrete beam-column joints subjected to reversed repeated loadings depends on the concrete strength. The more concrete strength was, the more stiffness and strength degradation for displacement ductilities of 6 or higher was developed due to brittleness of high-strength concrete. For reinforced high-strength concrete beam-column joints, current design recommendations seem to be modified in severe seismic area. |