浅析回弹法不确定性的根源

Analysis on the causes of resilience method uncertainty

自建国以来,大量的工业民用建筑经历风雨几十年,已经成为我国巨大的经济和政治资产,然而,它们是否能够继续安全的使用则是我们需要仔细考虑的问题。也就是说,对既有结构进行可靠性评定已成为我国工程界面临的一项重要任务。回弹法是测定混凝土强度的基本方法之一,这种方法操作方便,价格低廉,但是影响检测结果的因素很多,从而产生了较大的不确定性,造成检测的精度降低,影响了数据的可信程度。在研究利用回弹法测定混凝土材料强度的基础上,总结了造成其测定结果不确定性的几点根源,旨在为提高回弹法在工程应用中的检测精度提供参考,为研究不确定性的定量计算打下基础。

Since the founding of new China, a large number of industrial and civil buildings which experience wind and rain dozens of years have already become the huge economy and the politics assets in our country, however, they whether can continue safe usage is the question which we need to consider carefully.In other words ,the reliability evaluation of existing structure has already become an important task which our engineering circle is facing.The resilience method which own simply operation and low price, is one of the basic test methods of the concrete strength. But there exist a lot of influencing factors of the testing result, and thus this kind of method produce bigger uncertainty, resulting in the accuracy of the examination lower, influencing the data credible degree.This study based on the research of concrete strength test by resilience method, summarizes several roots leading to uncertainty of testing result, which is for the purpose to provide the reference for enhancing the accuracy of resilience method in present project, also aims to build the foundation for the quantitative calculation of uncertainty.