1. Assistant Professor, Centre for Structure Engineering and Informatics, Univ. of Nottingham, B67 Coates Bldg., University Park, Nottingham NG7 2RD, UK (corresponding author).
2. Ph.D. Candidate, Institute for Structural Mechanics, Ruhr Univ. Bochum, IC/6/163, Universitaetsstrasse 150, Bochum 44801, Germany.
3. Professor, Chair of Intelligent Technical Design, Bauhaus-Universität Weimar, Marienstrasse 13a, Raum 208, Weimar 99423, Germany.
4. Professor, Institute for Structural Mechanics, Ruhr Univ. Bochum, IC/6/185, Universitaetsstrasse 150, Bochum 44801, Germany.