1. Member, ASCE
2. Asst. Prof., Dept. of Civ. Engrg., Hong Kong Univ. of Sci. and Technol., Kowloon, Hong Kong (corresponding author).
3. Assoc. Prof., Dept. of Engrg. Mathematics, Riga Tech. Univ., Riga, Latvia LV 1010; currently, Visiting Scholar, Dept. of Civ. Engrg., Hong Kong Univ. of Sci. and Technol., Kowloon, Hong Kong.