Grouting core-pulling inspection of grouting outlet pipe of prefabricated building sleeve
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摘要: 提出了一种装配式建筑套筒出浆管的灌浆料抽芯检测方法。对于灌浆套筒连接的预制装配式混凝土结构，当套筒灌浆料养护达到一定时间后，在套筒出浆管口钻出数个一定深度的小孔并埋置螺丝钉，再对螺丝钉进行拉拔试验，将出浆管道内的灌浆料拔出，利用套筒出浆管道内灌浆料被抽芯后形成的通道达到后续对装配式构件灌浆进行质量检测和修复的目的。在施工现场，制作直径为4 mm，深度为20，25，30 mm的孔并埋入螺丝钉进行了拉拔试验。试验结果表明，该方法具有操作简便、成本低、随机快速、无损等优点，具有较大的工程实践意义。Abstract: A grouting core-pulling detection method for the grouting pipe of the prefabricated building sleeve is proposed. For the prefabricated concrete structure connected by the grouting sleeve, after the sleeve grouting has been cured for a certain period of time, drill several small holes of a certain depth at the outlet of the sleeve grout pipe and embed the screws, and then conduct the pull test on the screws. The grouting material in the grout outlet pipe is pulled out, and the channel formed after the grout in the sleeve grout outlet pipe is core-pulled is used to achieve the purpose of quality inspection and repair of the grouting of the assembled component. On the construction site, make the hole with a diameter of 4 mm and a depth of 25 mm and embed the screw for the pull test. The test results show that the method has the advantages of simple operation, low cost, random speed, non-destructive, etc., and has great engineering practical significance.
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[1] 齐宝库, 王丹,白庶,等.预制装配式建筑施工常见质量问题与防范措施[J].建筑经济,2016,37(5):28-30. [2] 苏杨月, 赵锦锴,徐友全,等.装配式建筑生产施工质量问题与改进研究[J].建筑经济,2016,37(11):43-48. [3] 常春光, 王嘉源,李洪雪.装配式建筑施工质量因素识别与控制[J].沈阳建筑大学学报(社会科学版),2016,18(1):58-63.
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