Print Email Facebook Twitter Punching shear strength of transversely prestressed concrete decks Title Punching shear strength of transversely prestressed concrete decks Author Amir, S. Van der Veen, C. Walraven, J.C. Faculty Civil Engineering and Geosciences Department Structural Engineering Date 2012-07-03 Abstract In the Netherlands, there is a need to determine the capacity of bridge decks as a large number of them were built back in the 60’s and 70’s. Since then, not only a lot of additional safety requirements have been incorporated into the modern codes but the traffic flow has also increased drastically. The current research deals with this question by taking into account arching action or compressive membrane action (CMA) in transversely prestressed decks on concrete girders. CMA is a phenomenon that occurs in deck slabs with edges restrained against lateral movement by stiff boundary elements. This restraint induces in-plane forces in the slab affecting both the flexural and the punching shear capacities. Existing methods were modified and a MATLAB program was developed to include the effect of CMA and the transverse prestressing to calculate the punching shear capacity of bridge decks. It was concluded that transverse prestressing enhances the CMA and improves the structural behaviour. However, detailed experiments are being carried out to further investigate the effect of different parameters, like geometry of the deck and the Transverse Prestress Level on the punching shear strength. Subject Compressive Membrane Actionconcrete deckspunching sheartransverse prestressing To reference this document use: http://resolver.tudelft.nl/uuid:750e47df-2968-4fd0-9b4b-334a7f78c7c7 Source 14th International Conference Structural Faults and Repair, Edinburgh, Scotland, UK, 3-5 July 2012 Part of collection Institutional Repository Document type conference paper Rights (c) 2012 The Author(s) Files PDF 302085.pdf 620.29 KB Close viewer /islandora/object/uuid:750e47df-2968-4fd0-9b4b-334a7f78c7c7/datastream/OBJ/view