摘要
钻孔内窥镜法可用于检测套筒灌浆饱满度,属事后检测方法。当检测到套筒灌浆不饱满时,可利用钻孔孔道进行注射补灌,从而实现检测与修复的有效闭环。以某工程为依托,详细介绍钻孔内窥镜法的应用。工程实践表明,钻孔内窥镜法检测结果直观、可靠,改进灌浆工艺后,灌浆饱满套筒占比由70%左右提高至90%以上,有效提高了灌浆质量;对灌浆不饱满套筒进行注射补灌,可确保灌浆饱满度满足要求。
The hole-drilling method combined with endoscopy can be used to inspect the sleeve grouting plumpness,which is a post-grouting method.When it is inspected that the sleeve grouting is not full,the drilled hole can be used for injection and supplementary grouting,so as to achieve an effective closed loop of inspection and repair.Based on a certain engineering project,the application of hole-drilling method combined with endoscopy is introduced in detail.The engineering practice shows that the hole-drilling method combined with endoscopy is clear and reliable.After the grouting process is improved,the proportion of full grouting sleeves has increased from about 70%to more than 90%,effectively improving the grouting quality.For sleeves that are not full of grouting,the injection and supplementary grouting can ensure that the grouting plumpness meets the requirements.
作者
肖顺
XIAO Shun(Shanghai Key Laboratory of Engineering Structure Safety,Shanghai Research Institute of Building Sciences Co.,Ltd.,Shanghai 200032,China)
出处
《施工技术》
CAS
2021年第3期17-19,共3页
Construction Technology
基金
上海市科学技术委员会社会发展领域课题(15DZ1203506,16DZ1201805,18DZ1205705)。
关键词
装配式
钻孔内窥镜法
套筒灌浆
注射补灌
饱满度
检测
prefabricated
hole-drilling methods combined with endoscopy
sleeve grouting
injecting for supplementary grouting
plumpness
inspection
