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Shear tests of reinforced concrete slabs and slab strips under concentrated loads

  • Delft University of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Scopus citations

Abstract

In slabs subjected to concentrated loads, the shear strength checks are conducted for two limit states: 1) shear over an effective width, and 2) punching shear on a perimeter around the point Joad. In current practice, the shear strength at the supports is determined with models that do not consider the transverse redistribution of Joad that occurs in slabs, which results in underpredictions for the actual slab shear capacity. Currently, an experimental program is being conducted at Delft University of Technology to determine the shear capacity of slabs under point loads near to the support. This paper presents the results of the tests conducted in continuous slabs and slab strips. In addition to studying the influence of the slab width, the specimens are tested with two types of reinforcement (ribbed and plain bars). The results of the experiments are compared to strength predictions from current design models. Also, recommendations for the support effective width and an enhancement factor for considering the effect of transverse load redistribution are given.

Original languageEnglish
Title of host publicationProceedings of the 9th fib International PhD Symposium in Civil Engineering
EditorsMichael Haist, Fernando Acosta, Harald S. Muller
PublisherKarlsruher Institut fur Technologie (KIT)
Pages3-8
Number of pages6
ISBN (Electronic)9783866448582
StatePublished - 2012
Externally publishedYes
Event9th fib International PhD Symposium in Civil Engineering - Karlsruhe, Germany
Duration: 22 Jul 201225 Jul 2012

Publication series

NameProceedings of the 9th fib International PhD Symposium in Civil Engineering

Conference

Conference9th fib International PhD Symposium in Civil Engineering
Country/TerritoryGermany
CityKarlsruhe
Period22/07/1225/07/12

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