摘要
为研究钢纤维混凝土材料的损伤演化过程,通过WEIBULL概率分布估计了钢纤维混凝土材料的强度分布。利用钢纤维混凝土材料强度分布与损伤变量的关系,推导出了钢纤维混凝土材料的损伤演化方程,并利用线性拟合的方法来计算损伤演化方程的参数。最后利用试验数据推导了素混凝土与钢纤维混凝土的损伤演化方程。经比较,对应于相同的损伤变量,体积含量1%的钢纤维混凝土抗压强度比素混凝土增加14.7%,而体积含量3%的则提高40%。
In order to study damage evolvement of SFRC concrete materials, strength distribution was studied using WEIBULL probability distribution function. By using relationship between damage and strength, formula of damage evolvement was presented out. Then linear regression method was used to calculate parameters in formula of damage evolvement. At last, formula of damage evolvement of concrete and two SFRC were given out using experiment data. Comparing the results, according to the same damage, the compressive strength of SFRC with 1% volume content is 14.7% higher than that of concrete. For SFRC with 3% volume content, the strength needed is 40% higher.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2007年第6期830-832,共3页
Journal of Materials Science and Engineering
基金
国家重点实验室开放基金资助项目(KFJJ03-5)
