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Title: Shear Behaviour of Precast/Prestressed Hollow-Core Slabs
Authors: Celal, Mahmut Sami
Supervisor: El-Salakawy, Ehab (Civil Engineering)
Examining Committee: Shehata, Emile (Civil Engineering) ElMekkawy, Tarek (Mechanical and Manufacturing Engineering)
Graduation Date: February 2012
Keywords: hollow-core slabs
shear capacity of prestressed members
web-shear resistance
factors affecting shear resistance
shear analysis by CSA A23.3-04
shear analysis by ACI 318-08
shear analysis by DIN EN 1168-08
full-scale testing of hollow-cores
Issue Date: 12-Jan-2012
Abstract: Shear strength of precast/prestressed hollow-core (PHC) slabs subjected to concentrated or line loads, especially near supports, may be critical and usually is the governing criteria in the design. This study presents the second phase of a research program, undergoing at the University of Manitoba, to calibrate the shear equations in the Canadian code for predicting the shear capacity of PHC slabs. This phase includes both experimental and numerical investigations using a finite element analysis (FEA) software package. The length of bearing, void shape and size, level of prestressing and shear span-to-depth ratio were investigated. The experimental results were compared to the predictions of the Canadian, American and European codes. It was concluded that the Canadian code is unduly conservative. However, the special European code for PHC slabs resulted in better and more consistent predictions. The FEA suggested that the adequate prestressing reinforcement ratio to obtain highest shear capacity ranges between 0.7% and 1.1%.
Appears in Collection(s):FGS - Electronic Theses & Dissertations (Public)

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