摘要
根据原型观测资料,计算混凝土坝缝端应力强度因子集,运用最大熵原理从理论上推导其熵概率密度函数,在此基础上给出了反演坝体混凝土断裂韧度的计算方法。该方法直接根据样本的数字特征值进行推断,而不是先假设成经典的概率分布,包含最少的主观假定,具有更充分的数学和物理意义。结合具体工程实例,并与传统方法进行对比分析,证实了该方法的有效性、可行性,为反演坝体混凝土断裂韧度的典型小概率法提供了更为坚实的计算理论基础。
Stress intensity factor set of dam concrete crack was calculated according to monitoring data.The maximum entropy was used to generate the maximum entropy probability density function(MEPDF) of the set,based on which the inversion analysis method of dam concrete fracture toughness was provided.The MEPDF was concluded just from the digital values of the sample,not from the assumption of classical probability distribution,which included the least subjective assumptions.Combined with engineering project,the ef...
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2008年第1期83-86,109,共5页
Journal of Wuhan University of Technology
基金
国家自然科学基金(50539030-1-1,50539010)
教育部“跨世纪优秀人才培养计划”基金(2003512643)
关键词
最大熵
大坝
断裂韧度
反演
maximum entropy
dam
fracture toughness
inversion analysis
