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Behavior of corrugated steel I-girder webs subjected to patch loading: Parametric study
Abstract Corrugated webs are gaining more attention as they perform better than plane webs due to enhanced shear stability, design life, lightweight and being economical. Corrugated web girders are widely used in bridge construction and as a result, are subjected to patch loads especially during the construction stage and are prone to buckling. Patch load capacity of corrugated webs is found to be sensitive to the static systems of the girder. In this paper, an extensive parametric study on different static forms, loading, and geometric parameters is carried out using a validated numerical model to develop a better understanding of the structural behavior of corrugated web girders subjected to patch loading. Furthermore, previous design proposals from the literature have been summarized. Based on numerical studies, an empirical model is prescribed for the determination of the ultimate patch load capacity of girders having cantilever spans.
Highlights Patch load resistance is sensitive to static form of the girder during realized construction as well as service stages. Smaller outstand of parallel fold is more critical location for eccentric patch loading. Load carrying capacities plateau for higher loading lengths. Unequal fold widths result in higher load carrying capacities per unit length of corrugation. A modification factor is proposed for patch resistance of cantilever spans from numerical results.
Behavior of corrugated steel I-girder webs subjected to patch loading: Parametric study
Abstract Corrugated webs are gaining more attention as they perform better than plane webs due to enhanced shear stability, design life, lightweight and being economical. Corrugated web girders are widely used in bridge construction and as a result, are subjected to patch loads especially during the construction stage and are prone to buckling. Patch load capacity of corrugated webs is found to be sensitive to the static systems of the girder. In this paper, an extensive parametric study on different static forms, loading, and geometric parameters is carried out using a validated numerical model to develop a better understanding of the structural behavior of corrugated web girders subjected to patch loading. Furthermore, previous design proposals from the literature have been summarized. Based on numerical studies, an empirical model is prescribed for the determination of the ultimate patch load capacity of girders having cantilever spans.
Highlights Patch load resistance is sensitive to static form of the girder during realized construction as well as service stages. Smaller outstand of parallel fold is more critical location for eccentric patch loading. Load carrying capacities plateau for higher loading lengths. Unequal fold widths result in higher load carrying capacities per unit length of corrugation. A modification factor is proposed for patch resistance of cantilever spans from numerical results.
Behavior of corrugated steel I-girder webs subjected to patch loading: Parametric study
Inaam, Qazi (author) / Upadhyay, Akhil (author)
2019-12-04
Article (Journal)
Electronic Resource
English
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