应用电磁法对钢筋保护层厚度检测结果评定的分析

Evaluation Analysis of Result of Applying Electromagnetic Method to Thickness Inspection of Steel Bar Protective Cover

交通运输部《公路桥梁承载能力检测评定规程》(JTG/T J21-2011)中对在用桥梁钢筋保护层检测指标提出了新的评定方法和标准,通过对实体构件的检测,依据数据分析来探讨其评定标准和方法在数据统计中的各项参数的相关性,最终结论是新的统计方法对施工质量的均匀性要求同以前的检验评定标准中钢筋保护层厚度相关指标相比更为科学、严谨,同时也对该项目提出了更高要求。

In the Specification for Inspection and Evaluation of Load- bearing Capacity of Highway Bridge（ JTG/T J21- 2011） made by Ministry of Transport of the People＇s Republic of China,a new evaluation method and standard of inspection indicators of in- service bridge steel bar protective coat is put forward,based on which this text discusses of correlations among indicators of the evaluation standard and method in data statistics relying on data analysis by inspecting entity components,resulting in that the new statistical method is more scientific and strict on uniformity of construction quality than indicators of the former inspection evaluation standard for steel bar protective coat thickness,and makes higher demand on this project.