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文中以损伤理论为基础,提出了利用混凝土残余变形来计算混凝土疲劳损伤的方法。对混凝土在受压重复荷载作用下的损伤发展规律进行了分析研究。给出了计算疲劳破坏临界损伤值的计算公式;并建立了可用来估算混凝土疲劳破坏的累积损伤准则。
Based on the damage theory, this paper presents a method to calculate the fatigue damage of concrete by using the residual deformation of concrete. The damage development law of concrete under repeated compressive loads was analyzed. The calculation formula for calculating the critical damage value of fatigue failure is given; and the cumulative damage criterion that can be used to estimate the fatigue failure of concrete is established.