Ultrasonic testing of sleeve grouting fullness
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摘要: 为了快速判断套筒灌浆是否饱满,基于超声波的传播原理和反射特性,结合灌浆不饱满的出浆口特征,分析了灌浆饱满性的超声检测方法。设计制作了3组试件,考虑在灌浆不饱满、出浆孔道倾斜及破损面倾斜等工况下进行试验,结果表明,该方法可快速有效地确定内部是否饱满,通过盲区以外的首波信号可确定不饱满处灌浆料破损面的位置,与实际位置的误差平均值不大于5%。工程验证结果表明,出浆口超声检测法具有检测效率高、成本低廉的优点,可与其他饱满度的定量检测方法配合使用。Abstract: In order to quickly determine whether the sleeve grouting is full or not, an ultrasonic method is developed to detect the grouting fullness, based on the propagation principle and reflection property of ultrasounds in combination with the characteristics of the grout outlet which is not full. Three groups of test pieces were designed and manufactured. The experimental study was carried out under the conditions of insufficient grouting, inclined outlet duct and inclined damaged surface. The results show that this method can quickly and effectively judge whether the sleeve is full or not, and can determine the location of damaged surface of grouting material inside the insufficient sleeve, with an average error to the actual one of no more than 5%, if the echo arrives behind the blind area. The results of engineering verification show that the ultrasonic method along the grouting outlet has the advantages of high testing efficiency and low cost, and it can be used with other quantitative testing methods of plumpness.
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Keywords:
- reflected ultrasound /
- grouting outlet /
- grouting sleeve /
- fullness of grouting
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[1] 郭正兴,颜文.装配式混凝土结构套筒灌浆连接灌浆料饱满度试验研究[J].江苏建筑,2018,38(3):4-8. [2] 崔士起,刘文政,石磊,等.装配式混凝土结构套筒灌浆饱满度检测试验研究[J].建筑结构,2018,48(2):40-47. [3] 高润东,李向民,王卓琳,等.基于预埋钢丝拉拔法的套筒灌浆饱满度检测技术研究[J].施工技术,2017,46(17):1-5. [4] 陶里,路利峰,徐文杰.X射线检测套筒灌浆试件内部缺陷试验研究[J].四川建筑科学研究,2018,44(1):43-45. [5] 孙彬,毛诗洋,王霓,等.预成孔法检测装配式结构套筒灌浆饱满度的试验研究[J].建筑结构,2018,48(23):7-10. [6] 李向民,高润东,许清风,等.钻孔结合内窥镜法检测套筒灌浆饱满度试验研究[J].施工技术,2019,48(9):6-8,16. [7] 顾盛.装配式混凝土结构连接节点质量检测的困惑与破解之道[J].工程质量,2018,36(11):1-6. [8] 廉国选,李明轩.超声在粘接界面的反射和透射[J].应用声学,2004,4(1):34-42. [9] 顾盛,潘永东,童寿兴,等. 一种沿着出浆孔道单侧超声法检测套筒灌浆饱满性的方法:CN109632948A[P].2019-04-16. [10] 潘永东,顾盛,李峰,等. 超声收发处理模块、超声检测仪、以及对预制构件套筒灌浆饱满性进行检测的方法:CN110261477A[P]. 2019-09-20.
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