基于超声波无损检测原理,对自然养护的C20和C30 2个强度等级的泵送混凝土立方体试块进行超声波测试.通过测试不同龄期、不同点位混凝土试块的超声波波速和工作应力,借助Origin数据处理软件对超声波波速和工作应力之间的关系进行回归分析,得出超声波波速与点位工作应力的关系曲线方程.研究结果表明:采用线性函数描述超声波波速与应力之间的关系相关度高,准确性好,可以为在役混凝土工作应力超声波检测提供参考.
Based on the ultrasonic nondestructive testing method,the natural maintained pumping concrete blocks of C20 and C30 is tested.Through the test of different ages and different points, the ultrasonic velocity and working stress are obtained. Then the Origin software is used to analyze the relationship between ultrasonic velocity and the concrete working stress.The result shows that linear function is reasonable in describing the relationship of ultrasonic velocity and working stress of concrete. Then a reference can be provided in testing the working stress of in-service concrete by nondestructive testing technology.
[1] 潘立,李志文.确定混凝土构件实际应力技术方法的研究[J]. 建筑结构, 2013,43(23):73-80. PAN L,LI Z W.Research on the new polytechnic method of determination for actual stresses in reinforced concrete members[J].Building Structure,2013,43(23):73-80.
[2] 茹世荣. 水工结构混凝土超声波无损检测技术应用[J]. 吉林水利,2017(12):63-66. DOI:10.15920/j.cnki.22-1179/tv.2017.12.022. RU S R. Application analysis on ultrasonic nondestructive test technology of hydraulic concrete[J].Jilin Water Resources, 2017(12):63-66. DOI:10.15920/j.cnki.22-1179/tv.2017.12.022.
[3] 方瑾. 混凝土无损检测常用方法综述[J]. 安徽建筑,2011(06):175-177. DOI:10.16330/j.cnki.1007-7359.2011.06.065. FANG J.Common methods review of non-destructive testing of concrete[J].Anhui Architecture, 2011(06):175-177. DOI:10.16330/j.cnki.1007-7359.2011.06.065.
[4] 李波. 超声回弹综合法检测混凝土强度试验研究[D].西安:西安理工大学,2010. LI B. Test research on concrete strength survey by ultrasnic-rebound method [D]. Xian:Xian University of Technology, 2010.
[5] AMIR N,WEN D,DIERVZNCENZD R,et al. Nondestructive testing of concrete using highly nonlinear solitary waves[J]. Nondestructive Testing and Evaluation,2017,32(4):.381-399. DOI:10.1080/10589759.2016.1254212.
[6] 庄晨旭,张劲泉,蒋含莞.混凝土应力检测技术研究综述[J].公路交通科技,2016,3(3):43-49. ZHUANG C X,ZHANG J Q,JIANG H W. Review of concrete stress testing technologies[J].Journal of Highway and Transportation Research and Development,2016,3(3):43-49.
[7] 严碧歌,袁益民,李泉臻.混凝土材料结构超声检测[J].西北大学学报,2002,32(1):20-22. DOI:10.16152/j.cnki.xdxbzr.2002.01.008. YAN B G,YUAN Y M,LI Q Z. A study on thickness detecting of concrete material by the ultrasonic method [J].Journal of Northwest University(Natural Science Edition),2002,32(1):20-22. DOI:10.16152/j.cnki.xdxbzr.2002.01.008.
[8] 朱金颖,陈龙珠,严细水.混凝土受力状态下超声波传播特性研究[J].工程力学,1998(03):111-117. ZHU J Y,CHEN L Z,YAN X S.Ultrasonic pulses behavior in concrete during compressive loading [J]. Engineering Machanics. 1998(03):111-117.
[9] HERBERT WIGGENHAUSER,HODA AZARI. Classification of nondestructive evaluation tasks for reinforced concrete structures[J]. Journal of Infrastructure Systems,2017,23(4):. DOI:10.1061/(ASCE)IS.1943-555X.0000378.
[10] 中华人民共和国住房和城乡建设部.JGJ 55—2011普通混凝土配合比设计规程[S].北京:中国建筑工业出版社,2011.
[11] 中华人民共和国住房和城乡建设部.GB 50146—2014粉煤灰混凝土应用技术规范[S].北京:中国建筑工业出版社,2014.
[12] 中华人民共和国住房和城乡建设部.GB/T 50081—2002普通混凝土力学性能试验方法标准[S].北京:中国建筑工业出版社,2002.
[13] 中华人民共和国住房和城乡建设部.GB 50119—2013混凝土外加剂应用技术规范[S].北京:中国建筑工业出版社,2013.
[14] 中华人民共和国住房和城乡建设部.GB/T50107—2010混凝土强度检验评定标准[S].北京:中国建筑工业出版社,2011.
