混凝土强度无损检测方法精度对比分析  

Contrast Precision Analysis of Nondestructive Test Concrete Strength

作　　者：佟晓君[1] 马群[1] 陈建伟[1] 李素娟[1] 

机构地区：[1]河北理工大学建筑工程学院,河北唐山063009

出　　处：《河北理工学院学报》2006年第1期136-139,共4页Journal of Hebei Institute of Technology

摘　　要：对回弹法、超声法、超声回弹综合法的优缺点和适用范围进行深入分析,并根据数据融合思想提出了一种超声回弹融合法。该方法采用回弹法和超声法两种方法检测,而后把两种方法的推定结果加权求和去推定强度。该估计量依据极大似然原理提出,并且理论证明了它的无偏性和有效性。结合试验数据表明,对四种方法分别选用国家规程中常用的回归模型来制定测强曲线,将各自相对误差绝对值进行对比分析,发现利用超声回弹融合法检测相对误差绝对值较小,在一定程度上提高了检测精度,但数据处理稍复杂一些,所以可以根据地区或工程实际需要选用不同的检测方法。This paper goes deep into analysis for suitable scope,merits and rebound method, ultrasonic method and rebound-ultrasonic method. Aaccording to the thought.of data fuse, the paper has put forward a kind of reboundultrasonic fusion method. This method adopts the method rebound and ultrasonic ,and estimates the strength with the weight sum. This estimated quantity is put forward in light of maximum likelihood principal. Its unbiasedness and validity have been proved. With the tested data, this paper chooses the general regression model in national rules establishm＇ent to measure strong curve in four methods, and analyzes absolute value relative error, and finds the rebound-ultrasonic fusion method has less absolute value relative error. And to some degree, the method has raised text precision, but data handling is a little complex, so we can choose different methods in response to diferent district or the actual project.

关 键 词：混凝土强度 无损检测 超声法 回弹法 

分 类 号：TU528[建筑科学—建筑技术科学]