GENERALIZED MINER'S NUMBER AND PROBABILITY OF FATIGUE FAILURE OF CONCRETE SUBJECTED TO VARIABLE CYCLIC LOADS

Abstract

It has been acknowledged that fatigue lives of concrete exhibit wide scattering, which should be properly taken into consideration in the limit state design. This paper proposes a generalized Miner's number for concrete under varaible cyclic loads, assuming the total number of repeated loads and fatigue strength of concrete are random variables. The Monte Calro simulation is carried out to obtain the probability of fatigue failure in relation of the generalized Miner's number. Median, expectation and standard variation of generalized Miner's number at failure are examined through numerical simulation and analytical formulation with experimental results.