EARTHQUAKE DAMAGE EVALUATION OF AN 8-STORY STEEL-REINFORCED CONCRETE BUILDING USING Sa-Sd CURVES

A seismic performance curve shows the relationship between the representative displacement (Sd) and the equivalent base shear force coefficient (Sa) of a structure. The seismic capacity of a building can be assessed in a straightforward manner using a simple Sa-Sd performance skeleton curve. In this study, earthquake response records were used to obtain Sa-Sdcurves for a steel-reinforced concrete (SRC) building and assess the changes in the seismic performance of the building that occur during an earthquake. This paper compares the seismic performance curves of an 8-story SRC building for 27 strong earthquakes that occurred in Japan between 1998 and 2012. The results demonstrate the practicability of using Sa-Sd curves to evaluate the damage to real buildings using data collected during strong earthquakes.