钢筋混凝土板疲劳性能研究

Study on fatigue performance of reinforced concrete slab

钢筋混凝土桥面板的疲劳破坏是指在重复的交通荷载作用下,在应力未达到材料的极限强度,甚至低于其屈服强度的时候,突然发生的破坏。而材料固有寿命的消耗是结构发生疲劳破坏的本质原因。对于承载反复荷载作用的混凝土板结构,保证结构有足够的疲劳寿命,在有效使用期间内不会发生破坏,对结构的安全性有非常深远的意义。

the fatigue failure of reinforced concrete bridge slab refers to the failure that occurs suddenly when the stress does not reach the ultimate strength of the material or even lower than its yield strength under repeated traffic load.The consumption of the material's inherent life is the essential reason for the fatigue failure of the structure.For the concrete slab structure bearing repeated loads,it is of profound significance to ensure that the structure has enough fatigue life and will not be damaged during the effective use period.