Extended CSDT model for shear capacity assessments of bridge deck slabs

The shear strength evaluation of reinforced concrete bridge deck slabs by accurate models can indicate reserves and avoid costly operations necessary for the extension their lifetime. This article introduces an approach that extends Critical Shear Displacement Theory model (CSDT) reaching higher levels approximation subjected to concentrated loads close support. A database with 141 tests wide members under support failing in one-way was built. represented typical were assessed through a combination CSDT different effective width. In other analyses, entire 214 test results mechanisms evaluated general width proposed (GESW). best results, which are function used, reached mean ratio between experimental predicted capacities 1.06 coefficient variation 14%, is similar reported some studies including linear non-linear finite element analyses. Furthermore, this level accuracy insensitive slenderness conditions tests. extended capacity preliminary analyses more precise than semi-empirical provided current design codes, comparable methods using Linear Elastic Finite Element Analyses (LEFEA). Moreover, our (GESW) provides reasonable regardless failure mode Therefore, approaches be applied slabs, variety loading conditions.