FATIGUE STRENGTH OF REINFORCED CONCRETE SLABS FAILING BY PUNCHING SHEAR
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The purpose of this study is to investigate the fatigue strength of reinforced concrete slabs failing by punching shear. A total of 108 slabs were tested under constant or combined cyclic loads. The results of the tests show that the number of loading cycles to failure has a logarithmic normal distribution and the fatigue strength for one million cycles is about 55 % of the ultimate strength, and that Miner's hypothesis is applicable to the punching failure. Finally, the design equation of fatigue punching strengths is proposed.
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