以次序统计量分布探讨评定混凝土强度最小值问题  

Concrete Compressive Strength's Minimum Value by the Precise Distribution Function of Order Statistic

作　　者：李志峰[1] 李开灿[1] 

机构地区：[1]湖北师范学院数学与统计学院,湖北黄石435002

出　　处：《襄樊学院学报》2011年第2期24-27,共4页Journal of Xiangfan University

摘　　要：利用概率统计中次序统计量的精确分布研究了《GB/T50107-2010混凝土强度检验评定标准》中试块强度最小值的合理界限的确定问题.根据生产方、用户方风险控制的置信水平,运用最小次序统计量的密度函数求得试块强度最小值fcu,min的取值范围,提出一种新的判别不等式,即fcu,min≥f cu,k-λ*2 S f cu,并且给出系数λ*2的取值表,这样既解决仅凭经验判断所带来的困惑,又能够提高数据处理的可信度.In the paper,we have inquired into a problem in GB/T50107-2010 Standard for evaluation of concrete compressive strength by the precise distribution function of order statistic in mathematical statistics,the problem concerns the qualified boundaries of concrete test-components strength＇s minimum value.According to the confidence level of the risk control by producers and users,using the density function of a minimum order statistic to solve the range of concrete test-components strength＇s minimum value,we have advanced a new discriminant inequality,and the numerical table of the coefficient.So it can not only resolve the confusion brought by the mere experience judgment,but also improve the credibility of data processing.

关 键 词：抗压强度 次序统计量 分布函数 

分 类 号：TU528[建筑科学—建筑技术科学]