Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The Arch Action Model for Shear Capacity Assessments of Prestressed Beams with Parallel Chords
Abstract Structural reassessments of existing older German road bridges based on current German standards often uncover substantial deficits especially in terms of the required shear reinforcement in the main girders in longitudinal direction. These shear deficits are only partly due to increases of traffic loads. Most of it is attributed to the evolution of structural shear capacity calculation models and especially due to disregarding a substantial concrete contribution to shear capacity. As a result of these imprecise calculation models, unnecessary cost-intensive strengthening measures might have been executed in many cases. In order to gain more information about the shear load bearing capacity of prestressed continuous concrete beams, large-scale experiments have been executed. The overall aim was to verify an analytical arching model to offer a more precise shear reassessment approach for existing bridge structures. The basic idea of the model is to add the vertical component of the inclined compressive force at beams with parallel chords to the truss model according to DIN EN 1992-2/NA in order to provide additional shear load bearing capacity.
The Arch Action Model for Shear Capacity Assessments of Prestressed Beams with Parallel Chords
Abstract Structural reassessments of existing older German road bridges based on current German standards often uncover substantial deficits especially in terms of the required shear reinforcement in the main girders in longitudinal direction. These shear deficits are only partly due to increases of traffic loads. Most of it is attributed to the evolution of structural shear capacity calculation models and especially due to disregarding a substantial concrete contribution to shear capacity. As a result of these imprecise calculation models, unnecessary cost-intensive strengthening measures might have been executed in many cases. In order to gain more information about the shear load bearing capacity of prestressed continuous concrete beams, large-scale experiments have been executed. The overall aim was to verify an analytical arching model to offer a more precise shear reassessment approach for existing bridge structures. The basic idea of the model is to add the vertical component of the inclined compressive force at beams with parallel chords to the truss model according to DIN EN 1992-2/NA in order to provide additional shear load bearing capacity.
The Arch Action Model for Shear Capacity Assessments of Prestressed Beams with Parallel Chords
Gleich, Philipp (Autor:in) / Maurer, Reinhard (Autor:in)
30.09.2019
9 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Experimental Investigation of Arching Effects in Prestressed Concrete Beams with Parallel Chords
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