摘要
针对活性粉末混凝土的疲劳强度进行了研究,通过对24个尺寸为70mm×70mm×210mm的活性粉末混凝土试件施加轴向压疲劳荷载,获得了不同应力水平和应力比作用下活性粉末混凝土的疲劳寿命。结果表明,活性粉末混凝土的疲劳寿命统计分布规律服从两参数Weibull分布,建立了活性粉末混凝土的疲劳寿命方程,确定了方程中的参数,研究结果可用以预测一定存活率要求下活性粉末混凝土的疲劳寿命。
The fatigue strength of reactive powder concrete（RPC） is studied.An experimental program was conducted to obtain the fatigue-lives of RPC at various stress level and stress ratio.Twenty four RPC specimens of size 70 min×70 mm×210 mm were tested under axial compressing fatigue loading.The results indicate that the statistical distribution of fatigue-life of RPC is in agreement with the two-parameter Weibull distribution. The coefficients of the fatigue equation were determined corresponding to different survival probabilities so as to predict the fatigue strength of RPC for the desired level of survival probability.
出处
《混凝土》
CAS
CSCD
北大核心
2008年第7期3-6,共4页
Concrete
基金
国家自然科学基金资助项目(50778021)
关键词
活性粉末混凝土
疲劳强度
应力水平
存活率
reactive powder concrete
fatigue strength
stress level
survival probability
