Earthquake damage evaluation of an 8-story steel-reinforced concrete building using Sa-Sd Curves

Abstract

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 - Sd curves 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.