[1]Department of Civil and Environmental Engineering and Architecture University of Cagliari Cagliari 09124 Italy;
[2]Department of Architecture University of Roma Tre Roma 00154 Italy;
[3]College of Civil Engineering Fuzhou University Fuzhou 350116 China;
[4]Department of Sciences of Civil Engineering and Architecture Polytechnic University of Bari Bari 70126 Italy;
Shell footbridges; Cantilevered deck; Anticlastic shell; Thrust network analysis(TNA); Concrete;