1 College of Architecture and Environment, Institute of New Energy and Low-Carbon Technology , Sichuan University , Chengdu , Sichuan 610207 , P.R. China.
2 Brook Byers Institute for Sustainable Systems, School of Civil and Environmental Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States.
3 Department of Civil and Environmental Engineering , University of Pittsburgh , Pittsburgh , Pennsylvania 15261 , United States.