1. Dr., Faculty of Civil Engineering, Institute of Structural Mechanics, Brno Univ. of Technology, Veveří 95, 602 00 Brno, Czech Republic (corresponding author).
2. Dr., Faculty of Civil Engineering, CIDEAS Center, Brno Univ.of Technology, Žižkova 17, 602 00 Brno, Czech Republic.
3. Faculty of Civil Engineering, CIDEAS Center, Brno Univ. of Technology, Žižkova 17, 602 00 Brno, Czech Republic.