同位素2024，Vol.37Issue(4)：353-362,10.DOI:10.7538/tws.2024.youxian.011
钢壳混凝土复合结构脱空高度与中子响应关系研究
Study on the Response Relationship between Neutrons and Void Height of Steel-Shell Concrete Composite Structure
摘要
Abstract
In order to reveal the response relationship between the neutrons and void height of steel-shell concrete composite structures,and establish a new quantitative detection method for the void height,based on the principle of fast neutron moderation and neutron scattering,an indoor equivalent concrete physical simulation method was used to construct a void model and conduct tests in this paper.Univariate regression analysis was carried out on the tests data,and it was found that there was a significant linear correlation between the thermal neutron count rate and the steel plate thickness,concrete moisture content and void height in the steel-shell concrete composite structure.The calibration relationship between the void height of steel-shell concrete and the thermal neutron count rate was further established,and the verification test was carried out.The results show that the error between the concrete void height value calculated by the calibration relationship and the actual void height value is small,the two have good consistency,the thermal neutrons generated by the action of fast neutrons penetrated through the steel plate and concrete can be used to quantitatively calculate the void height of the steel-shell concrete composite structure,the neutron method can solve the problem of inaccurate quantification in current detection.关键词
中子/钢壳混凝土/脱空高度/响应关系/回归分析Key words
neutrons/steel-shell concrete/void height/response relationship/regression analysis分类
能源科技引用本文复制引用
赵洪波,刘国庆,范子武,孙龙,孟令超,王琅琅,洪云飞..钢壳混凝土复合结构脱空高度与中子响应关系研究[J].同位素,2024,37(4):353-362,10.基金项目
中央级公益性科研院所基本科研业务费专项基金(Y122011) （Y122011）
珠江三角洲水资源配置工程课题研究(CD88-GC02-2020-0034) （CD88-GC02-2020-0034）
广东省重点领域研发计划项目(2019B111105002) （2019B111105002）
