Print Email Facebook Twitter Case study on aggregate interlock capacity for the shear assessment of cracked reinforced-concrete bridge cross sections Title Case study on aggregate interlock capacity for the shear assessment of cracked reinforced-concrete bridge cross sections Author Lantsoght, E.O.L. (TU Delft Steel & Composite Structures) van der Veen, C. (TU Delft Steel & Composite Structures) Walraven, J.C. (TU Delft Steel & Composite Structures) de Boer, A. (Ministry of Infrastructure and the Environment) Date 2016 Abstract A 55-year-old bridge showed large cracking in the approach bridge caused by restraint of deformation and support settlement. After repair, it was uncertain at which crack width the traffic loads on the bridge should be further restricted. The shear capacity was calculated by counting on the aggregate interlock capacity of a supposedly fully cracked cross section. An aggregate interlock relationship between shear capacity and crack width based on an unreinforced section was used to find the maximum allowable crack width. Limits for crack widths at which load restrictions should be imposed were found. The large structural capacity of the cracked concrete section shows that the residual bearing resistance based on the aggregate interlock capacity of reinforced concrete slab bridges with existing cracks is higher than expected. This expected capacity could be calculated with the inclined cracking load from the code provisions. The procedure outlined in this paper can thus be used for the shear assessment of fully cracked cross sections of reinforced concrete bridges To reference this document use: http://resolver.tudelft.nl/uuid:c9cd180e-3605-488e-8b23-2967de2692bd DOI https://doi.org/10.1061/(ASCE)BE.1943-5592.0000847 ISSN 1084-0702 Source Journal of Bridge Engineering, 1-10 Part of collection Institutional Repository Document type journal article Rights © 2016 E.O.L. Lantsoght, C. van der Veen, J.C. Walraven, A. de Boer Files PDF Case_Study_on_Aggregate_I ... _09_29.pdf 449.36 KB Close viewer /islandora/object/uuid:c9cd180e-3605-488e-8b23-2967de2692bd/datastream/OBJ/view