1. Postdoctoral Researcher, Institute of Structural Engineering, Dept. of Civil, Environmental and Geomatic Engineering, Swiss Federal Institute of Technology (ETH) Zürich, HIL E13.1, Stefano-Franscini-Platz 5, CH-8093 Zürich, Switzerland (corresponding author).
2. Associate Professor and Associate Chair, Dept. of Civil, Environmental, and Construction Engineering, Univ. of Central Florida, Engr II 402, 4000 Central Florida Blvd., Orlando, FL 32816-2450.
3. Professor and Chair of Structural Dynamics and Earthquake Engineering, Dept. of Civil, Environmental and Geomatic Engineering, Swiss Federal Institute of Technology (ETH) Zürich, HIL E14.1, Stefano-Franscini-Platz 5, CH-8093 Zürich, Switzerland.