两种修正方法检测既有房屋混凝土强度结果的差异分析

Analysis on the Difference between Test Results of Concrete Strengths of Existing Houses with Two Corrective Methods

通过一个既有房屋混凝土强度检测工程实例,采用修正系数法和局部修正量法两种不同方法对混凝土强度检测结果进行修正,对修正后的影响进行对比研究,发现两种方法修正后的样本均值非常接近。但是修正系数法修正后的样本标准差和置信区间幅度发生了变异,而局部修正量法修正后的标准差和置信区间幅度与原样本保持一致。

Through the project case of concrete strength testing of an existing house, the thesis adopts correction factor method and local correction method to correct the test result of concrete strength and makes a comparative study on correction influences; finally, it is found the sample averages of two corrections are very approximate. However, the sample standard deviation after correction with correction factor method and the range of confidence interval vary from those of the original sample, while the sample standard deviation after correction with local correction method and the range of confidence interval are the same as those of the original sample.