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Concentric Punching Shear of Waffle Slab
This paper presents test results of fifteen 1/10th-scale micro-concrete waffle slabs subjected to concentric punching shear. Although the observed punching failure mechanism of waffle slabs was found to be very similar to that of flat slabs, the shear capacity is relatively reduced because some of the potential failure surface is lost when it extends into the waffle section. Because the current codes of practice do not consider the punching shear mechanism of waffle slabs, the comparisons with the test results revealed that BS8110 and EC2 overestimated the punching capacities of waffle slabs, whereas ACI's prediction was conservative. A prediction model based on the upper-bound plasticity theory was proposed to predict the failure loads, which gave good agreements with the tests.
Concentric Punching Shear of Waffle Slab
This paper presents test results of fifteen 1/10th-scale micro-concrete waffle slabs subjected to concentric punching shear. Although the observed punching failure mechanism of waffle slabs was found to be very similar to that of flat slabs, the shear capacity is relatively reduced because some of the potential failure surface is lost when it extends into the waffle section. Because the current codes of practice do not consider the punching shear mechanism of waffle slabs, the comparisons with the test results revealed that BS8110 and EC2 overestimated the punching capacities of waffle slabs, whereas ACI's prediction was conservative. A prediction model based on the upper-bound plasticity theory was proposed to predict the failure loads, which gave good agreements with the tests.
Concentric Punching Shear of Waffle Slab
Ahmed Faleh Al-Bayati (author) / Teck Leong Lau / Leslie A Clark
ACI structural journal ; 112
2015
Article (Journal)
English
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