1. Research Assistant Professor, Dept. of Civil Engineering, Aalborg Univ., Sohngaardsholmsvej 57, 9000 Aalborg, Denmark (corresponding author).
2. Professor, Dept. of Civil Engineering, Aalborg Univ., Sohngaardsholmsvej 57, 9000 Aalborg, Denmark.
3. Associate Professor, Dept. of Civil Engineering, Aalborg Univ., Sohngaardsholmsvej 57, 9000 Aalborg, Denmark.