1. Professor, Center of Excellence in Railway Engineering, Iran Univ. of Science and Technology, 1311416846 Tehran, Iran (corresponding author).
2. Ph.D. Student, School of Railway Engineering, Iran Univ. of Science and Technology, 1311416846 Tehran, Iran.
3. Associate Professor, School of Railway Engineering, Iran Univ. of Science and Technology, 1311416846 Tehran, Iran.
4. Assistant Professor, Dept. of Civil Engineering, Faculty of Engineering, Shahid Chamran Univ., 6135713996 Ahvaz, Iran.