Formulation of Post-Peak Behavior of Old Reinforced Concrete Columns until Collpase

Abstract eng:
RC buildings designed by the Japanese codes older than 1971 are in danger of suffering heavy damages or even collapse during severe earthquakes. To evaluate seismic performance of those buildings more accurately than a present level, it is necessary to grasp post-peak behavior of old columns. Half-scale model specimens representing old columns that were designed to fail in shear or flexural yielding were tested until they came to be unable to sustain gravity load. Based on test results, the post-peak behavior of old columns until collapse was examined and formulated.

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