1. Assistant Professor, Geotechnical Engineering Research Center, International Institute of Earthquake Engineering and Seismology, 1953714453 Tehran, Iran (corresponding author).
2. Ph.D. Student, Dept. of Civil Engineering, Semnan Univ., 3513119111 Semnan City, Iran; Formerly, Graduate Student, Department of Civil Engineering, Semnan Univ., 3513119111 Semnan City, Iran.