1. Graduate Engineer, Maunsell Consultants Asia Limited, 8/F Grand Central Plaza, Shatin, Hong Kong; formerly, MPhil Candidate, Dept. of Civil and Structural Engineering, Hong Kong Polytechnic Univ., Hong Kong, China.
2. Assistant Professor, Dept. of Civil and Structural Engineering, Hong Kong Polytechnic Univ., Hong Kong, China (corresponding author). E-mail: cemlu@polyu.edu.hk