建立回弹法现场测强曲线的极大似然法  

Maximum Likelihood Method of Establishing in-site the Rebound Strength Curve

作　　者：佟晓君[1] 陈海彬[2] 马群[1] 武春廷[1] 

机构地区：[1]河北理工大学建筑工程学院,河北唐山063009 [2]北京航空航天大学固体力学所,北京100083

出　　处：《应用基础与工程科学学报》2007年第3期380-386,共7页Journal of Basic Science and Engineering

基　　金：唐山市科学技术局资助项目(05204501A-6)

摘　　要：提出一种建立现场回弹法测强曲线的方法,此方法将制定通用(或专用)曲线的大量实验室数据所提供的共性信息和现场钻芯及同条件试块所得到的个性信息有效地融合,利用极大似然原理得到现场回弹测强曲线.通过利用原有的数据信息,有效扩展了现场试验数据的样本量;通过将共性信息和个性信息的融合,使现场测强曲线不仅体现出混凝土强度和回弹值之间的一般关系,同时还能适应于特定工程的实际情况.工程实践表明,利用本文方法建立的现场回弹测强曲线推定混凝土强度值的精度较高.此方法不仅适用回弹法检测混凝土结构强度,还能在其它领域中应用.A method of building in-site rebound strength curve is presented in the paper, which can effectively fuse the generality information provided with plenty of data in the laboratory and the personality information obtained from in-site core sample or the test blocks of the same condition. The in-site strength curve is given by using the theory of the maximum likelihood. It is effective to expand the sample size of the in-site test data by using original data information. By fusion the generality information and personality information, the curve not only reveals the general relationship between the concrete strength and the rebound value, but also applies to practice of specific engineering. It is shown from engineering practice that the deductive value of concrete strength has high accuracy by the rebound strength curve of this paper. Moreover, this method is used not only in testing concrete strength but also in the fields.

关 键 词：测强曲线 共性信息 个性信息 极大似然原理 回弹法 无损检测 

分 类 号：TU528.07[建筑科学—建筑技术科学]