Abstract: On the basis of the fatigae performance of the Steel Fibers Concrete(SFRC)and the cause ofstrengthening,this paper discusses the range of the SFRC improving times in subjecting to fatigue load,comparing with concrete in some cedain stress ratio,the volumtric ratio(Vf) and the ratio of lengthdiameter (l/d) have effects on the fatigue life of the SFRC.Thus,this paper proposes the useful lifein designing the SFRC road pavement,providing the reference of designing the SFRC road pavement.

Key words: SFRC road pavement, fatigue performence, useful life

摘要： 本文主要根据钢纤维混凝土（简称SFRC）的疲劳性能及其增强机理，探讨了在一定应力比时SFRC比普通砼承受疲劳荷载的次数提高的范围，及钢纤维的体积掺量Vf和长径比L/d对SFRC疲劳寿命的影响，从而对SFRC路面的设计使用年限提出了建议，以供设计SFRC路面时的参考．

关键词: SFRC路面, 疲劳性能, 使用年限