1. Professor, School of Civil and Hydraulic Engineering, Hefei Univ. of Technology, Tunxi Road No. 193, Hefei, Anhui 230009, People’s Republic of China (corresponding author).
2. Associate Professor, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong Univ., 800 Dong Chuan Road, Shanghai 200240, People’s Republic of China.