Abstract A theoretical model was developed for the anti-fatigue design of steel reinforced ECC (Engineered Cementitious Composites) composite system (SRECS) under flexure. The fatigue properties of both ECC and steel reinforcement were comprehensively considered in this model. Static flexure tests on full-scale steel reinforced ECC link slabs were carried out and the previous experimental results of ECC link slabs and plain ECC beams under fatigue flexure were adopted to calibrate the proposed model. The predicted fatigue life of the ECC link slabs is basically consistent with the tested results. Considering the sensitiveness of the proposed algorithm, the relationship between the stochastic attributes of fatigue stress level and fatigue life of ECC in SRECS was established, which can promises sufficient guarantee rate by control the level of applied fatigue flexure.

中文翻译：

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弯曲作用下钢增强ECC复合材料抗疲劳设计的理论模型

摘要 建立了钢增强ECC（工程水泥复合材料）复合材料系统（SRECS）受弯抗疲劳设计的理论模型。该模型综合考虑了ECC和钢筋的疲劳性能。对全尺寸钢筋 ECC 连接板进行静态弯曲试验，并采用先前在疲劳弯曲下 ECC 连接板和普通 ECC 梁的实验结果来校准所提出的模型。ECC连接板的预测疲劳寿命与试验结果基本一致。考虑到所提算法的敏感性，建立了SRECS中ECC疲劳应力水平随机属性与疲劳寿命的关系，