EFFECT OF LARGE OPENINGS AND COLUMN RECTANGULARITY ON PUNCHING SHEAR STRENGTH OF SLABS
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Published:2002
S Teng, H K Cheong, K L Kuang, 2002. "EFFECT OF LARGE OPENINGS AND COLUMN RECTANGULARITY ON PUNCHING SHEAR STRENGTH OF SLABS", Concrete Floors And Slabs: Proceedings of the International Seminar held at the University of Dundee, Scotland, UK on 5–6 September 2002, Ravindra K. Dhir, Moray D. Newlands, Thomas A. Harrison
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This paper summarises one part of the research program on flat-plate structures conducted jointly at the Nanyang Technological University (NTU) and the Building and Construction Authority (BCA), Singapore. The paper focuses on punching shear design of slabs with openings and supported on rectangular columns. Twenty slab specimens had been tested in the programme and it was found as expected that the stresses in the slabs are concentrated mostly around the shorter ends of the rectangular columns. Openings reduce punching strength considerably and the best place for an opening is along the longer side of the column. A simple method to consider the effect of opening and column rectangularity is proposed and its application to the BS8110 Code is shown to be accurate. Comparison of the experimental results with the ACI Code and the Eurocode-2 predictions is also presented.
INTRODUCTION
TEST PROGRAMME
PUNCHING SHEAR DESIGN
RECOMMENDED PROCEDURE
COMPARISON WITH EXPERIMENTAL RESULTS
ACKNOWLEDGEMENT
REFERENCES
