School of Civil Engineering;
Southeast University;
Nanjing 211189;
China;
The Research and Development Joint Center of Energy Dissipation Technology of Southeast University and Forceset Corporation;
Southeast University;
Nanjing 211189;
China;
School of Civil and Transportation Engineering;
Beijing University of Civil Engineering and Architecture;
Beijing 100044;
China;
Beijing Institute of Architectural Design;
Beijing 100045;
China;
existing urban RC frame building; retrofitting using seismic isolation; seismic resilience; yield ratio;