Comparison Between Pedestrian and Road Bridges Designed with GFRP Pultruded Trusses
摘要整理
The overall purpose of the article entitled “Comparison Between Pedestrian and Road Bridges Designed with GFRP Pultruded Trusses” was the comparison between the structural behavior of a pedestrian and road bridge composed by GFRP trusses beams and GFRP decks. A simple design procedure considers limit state with long time effects (ten years for temporary bridge) and shear deformation contribution is developed focusing on the choice of the best shape of truss structures and geometry of cross-section of constituent elements taking into account of buckling effects. Verification of connections, bridge deck and its connections with trusses are not considered at this stage of research. Major findings of the research were that the design of GFRP bridges with tubular elements, having diameter to thickness ratio lover than 20 and geometrical slenderness lower than 30, is not affected by local and global buckling but is governed by deflection and by the limitation of first period. The limits of 5 for road bridge and 15 for pedestrian bridge are suggested with a span 35 m, while for a bridge of 10 m of span values suggested are 10 and 30 for road and pedestrian bridges.