基于WEIBULL概率分布的钢纤维混凝土材料损伤演化分析  

Study on Damage Evolvement of Steel Fiber Concrete Material by WEIBULL Probability Distribution

作　　者：龙源[1] 万文乾[1] 纪冲[1] 周翔[1] 唐献述[1] 

机构地区：[1]解放军理工大学工程兵工程学院,江苏南京210007

出　　处：《材料科学与工程学报》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)

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.

关 键 词：损伤演化 钢纤维体积含量 WEIBULL概率分布 

分 类 号：TJ012.4[兵器科学与技术—兵器发射理论与技术]