1. Research Associate and Chair of Concrete and Masonry Structures, Dept. of Civil and Environmental Engineering, School of Engineering and Design, Technical Univ. of Munich, Theresienstraße 90, Munich 80333, Germany (corresponding author).
2. Full Professor and Chair of Concrete and Masonry Structures, Dept. of Civil and Environmental Engineering, School of Engineering and Design, Technical Univ. of Munich, Theresienstraße 90, Munich 80333, Germany.