1. Research Assistant Professor, Dept. of Civil and Environmental Engineering, Hong Kong Univ. of Science & Technology, Hong Kong 999077, China; formerly, Dept. of Civil and Environmental Engineering, National Univ. of Singapore, Singapore 117576, Singapore (corresponding author). ORCID: .
2. Assistant Professor, Dept. of Civil and Environmental Engineering, National Univ. of Singapore, Singapore 117576, Singapore.