1. M.Sc. Graduate Student, Structural Research Center, International Institute of Earthquake Engineering and Seismology, 37517-95387 Tehran, Iran; B.Sc. Graduate Student, Dept. of Civil Engineering, Shahid Rajaee Teacher Training Univ., 16788-15811 Tehran, Iran.
2. M.Sc. Graduate Student, Dept. of Civil Engineering, Sharif Univ. of Technology, 14787-84954 Tehran, Iran; B.Sc. Graduate Student, Dept. of Civil Engineering, Shahid Rajaee Teacher Training Univ., 16788-15811 Tehran, Iran.
3. Associate Professor, Dept. of Civil Engineering, Shahid Rajaee Teacher Training Univ., P.O. Box 16785-136, 16788-15811 Tehran, Iran (corresponding author).
4. Ph.D. Student, Dept. of Materials Science and Engineering, Iran Univ. of Science and Technology, 14787-84954 Tehran, Iran.