Print Email Facebook Twitter Bearing capacity of prestressed concrete decks slabs Title Bearing capacity of prestressed concrete decks slabs Author Amir, S. Van der Veen, C. Walraven, J.C. De Boer, A. Faculty Civil Engineering and Geosciences Department Water Management Date 2014-02-10 Abstract In the Netherlands, most of the bridges were built more than 50 years ago and it is essential for designers to find out if these bridges are safe for modern traffic especially in shear since that was not considered in design recommendations before 1976. Detailed experiments have been carried out in the laboratory to investigate punching shear capacity of transversely prestressed concrete decks under concentrated loads. Various types of loading configurations were used and the effect of prestress level was studied. All the single load tests failed in punching of the deck slab and the slab-girder interface remained intact regardless of the position of the load. It was found that sufficient compressive membrane action (CMA) had developed in the deck slab due to lateral restraint and combined with the prestressing force, the bearing capacity was much higher than predicted by various codes and theoretical methods that do not consider the effect of CMA. This could lead to the conclusion that old bridges still have sufficient residual strength considering the beneficial effect of CMA. Subject deck slabprestressingconcentrated loadspunchingcompressive membrane action To reference this document use: http://resolver.tudelft.nl/uuid:62b7444f-996f-437e-8473-4cca0d99abae Publisher Universities Press ISBN 978-81-7371-919-6 Source Proceedings of the 4th International FIB Congress, Mumbai, India, 10-14 February 2014; Authors version Part of collection Institutional Repository Document type conference paper Rights (c) 2014 The Author(s) Files PDF 304404.pdf 590.17 KB Close viewer /islandora/object/uuid:62b7444f-996f-437e-8473-4cca0d99abae/datastream/OBJ/view