水下摄像和高强灌浆在预应力管桩承载力不足处理中的应用
投稿时间:2020-11-19  修订日期:2021-08-20  点此下载全文
引用本文:阮小峰.水下摄像和高强灌浆在预应力管桩承载力不足处理中的应用[J].钻探工程,2021,48(9):100-106.
RUAN Xiaofeng. Application of underwater photography and high strength grouting in the treatment of insufficient bearing capacity of prestressed pipe piles[J]. Drilling Engineering, 2021,48(9):100-106.
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作者单位E-mail
阮小峰 河南省地矿局第二地质勘查院河南 郑州 450000 490478760@qq.com 
中文摘要:高强预应力混凝土管桩(PHC)具有质量预可视、高强环保、施工高效灵活等特点,在目前雾霾严重的北方高层建筑施工中得到了广泛应用。本文通过河南某小区高层住宅楼管桩工程施工实例,介绍了管桩施工过程中由于施工、地层等原因造成的承载力不足问题,在采用低应变等常规检测手段无法准确判定原因的情况下,利用水下摄像技术准确判定问题所在,并采用复压、高强灌浆等方法处理的过程,为类似工程的处理提供一定的参考价值。
中文关键词:高强预应力混凝土管桩  承载力不足  低应变检测  水下摄像  高强灌浆
 
Application of underwater photography and high strength grouting in the treatment of insufficient bearing capacity of prestressed pipe piles
Abstract:High strength prestressed concrete pipe piles (PHC) have been widely used in the construction of high-rise buildings in heavy-haze shrouded northern China due to its features of pre-visible quality, high-strength, environmental protection, efficient and flexible construction. In reference to a field case of pipe pile construction for a high-rise residential building in Henan province, this paper introduces the problem of insufficient bearing capacity caused by construction, stratum and other factors in the process of pipe pile construction; underwater photography technology used to accurately determine the problem while the conventional detection methods such as low strain cannot accurately determine the causes; and the treatment process of re-pressing, high-strength grouting and other methods. It provides can some reference for the treatment of similar projects.
keywords:high-strength prestressed concrete pipe pile  insufficient bearing capacity  low-strain detection  underwater photography  high-strength grouting
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