![]() Truss bridges are generally used for spans over 40 m. In addition, as the axial forces (but not bending moments and shear forces) are generally governs the stress conditions of the members, such assumption generally will not cause large errors between the real bridges and the design models.Įhab Ellobody, in Finite Element Analysis and Design of Steel and Steel-Concrete Composite Bridges, 2014 3.9.1 General For the design point of view, however, the pinned connection assumption is considered for security concerns and also for simplifying the structural design and analyses. For modern truss bridges, gusset plate connections are generally used, then bending moments and shear forces of members should be considered for evaluating the real performance of the truss bridges, which is achieved by the aid of finite element software. ![]() Therefore, the truss members like chords, verticals, and diagonals act only in either tension or compression. In order to simplify the calculation, trusses are generally assumed as pinned connection between adjacent truss members. Truss bridges are one of the oldest types of modern bridges. Truss is a structure of connected elements forming triangular units, and a bridge whose load-bearing superstructure is composed of a truss is a truss bridge. Weiwei Lin, Teruhiko Yoda, in Bridge Engineering, 2017 1.3.8.3 Truss Bridges
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