ランダム荷重の一疲労試験法の提案とコンクリートの圧縮疲労特性に関する研究(<特集>建設材料特集)

概要

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In order to investigate the fatigue life of concrete under varying repeated load, several kinds of fatigue tests were conducted. They were: the constant-amplitude fatigue test, three kinds of variable load fatigue tests and the random load fatigue test in which the shape of the maximum stress level for the random repeated load was set to fit the exponential distribution. In these tests, concrete cylinder specimens were subjected to the repeated load, level of which was selected to lie between a constant minimum stress level and different maximum stress levels. Since the values of the fatigue life of concrete are known to scatter widely, the fatigue test results were evaluated statistically. From the experimental results, it can be concluded as follows. (1) At each test condition, the distribution of Miner sum follows a logarithmic normal distribution. (2) Miner's rule may possibly be applied to predict the fatigue life under varying repeated load. (3) The variable load fatigue test can be used to simulate the fatigue test under random load.
社団法人日本材料学会の論文
1987-07-15