1. Professor, Dept. of Civil Engineering, National Chung-Hsing Univ., 250 Kuo-Kuang Rd., TaiChung, Taiwan, 403, Republic of China.
2. Dept. of Civil Engineering, National Chung-Hsing Univ., 250 Kuo-Kuang Rd., TaiChung, Taiwan, 403, Republic of China.
3. Master, Dept. of Civil Engineering, National Chung-Hsing Univ., 250 Kuo-Kuang Rd., TaiChung, Taiwan, 403, Republic of China.