- 卢 果,徐 骁,张 琪,杨 逍,张亚梅,熊远亮
2020年第4期
摘要
引用本文
摘 要:采用可埋入的超声压电传感器与商用超声检测仪相连,测试了不同强度等级装配式建筑梁板柱节点处的混凝土在不同龄期的强度与波速,建立了埋入式传感器专用测强曲线,并与传统方法进行了对比,验证了传感器的测试精确度。结果表明,埋入式自制传感器与传统传感器测试数据吻合度高,相同强度下两者测强曲线拟合相关系数接近1,平均相对误差满足规范中小于12%的要求。埋入式自制传感器可与现有超声测试技术兼容,有效地对缺少操作面及复杂的构件进行强度检测。Abstract:Self-madeembeddedpiezoelectricceramictransducersforultrasonictestingwasemployedandconnectedwithcommercialultrasonictestertoassessthestrengthoftheconcreteinbeam-column-slabconnectionofprefabricatedbuildings,andthestrengthofconcreteandthevelocitythatultrasoundtravelsthroughtheconcreteweremeasuredatdifferentages,andthecurvefromembeddedtransducersforstrengthmeasurementwasestablished.Thecurvefromtraditionaltransducerswasalsoestablishedtocomparetheirsimilaritytoverifytheaccuracyofthenewmethod.Theresultsshowthattheembeddedself-madetransducerandthetraditionaltransducerhaveahighcoincidencedegree,andthefittingcoefficientisveryhigh(upto1)andtherelativeerroriswithin12%.Theembeddedpiezoelectrictransducersarecompatiblewiththeexistentultrasonictestingtechnology,theycanmeasurethestrengthofmemberswithlessoperativesurfacesandcomplicatedshapes,whichisimpossibleusingtraditionaltechnology.
卢果,徐骁,张琪,等.埋入式超声传感器混凝土测强曲线研究[J].混凝土与水泥制品,2020(4):86-90.
LU G,XU X,ZHANG Q,et al.Research on the Strength Measurement Curve of Concrete from Embedded Piezoelectric Transducers[J].China Concrete and Cement Products,2020(4):86-90.