effect of multiple low intensity earthquakes in low-rise reinforced concrete buildings

The basic approach for seismic design of structures utilizes a single loading scenario and a single performance criterion; usually life-safety (disarno, 2013); while structures, built in seismic areas, are often affected by earthquakes with various frequency and magnitude during their lifetime. current seismic codes specify design earthquake loads as single events andassume that all of the structures in earthquake prone regions are able to withstand frequent low intensity earthquakes that is likely to occur at their location; however, the structure may experience multiple ground accelerations including small multiple earthquakes in their lifetime.