大直径百米超长水中桩基施工防塌孔技术研究

Study on Anti Collapse Hole Technology of Large Diameter 100 m Super Long Underwater Pile Foundation Construction

大直径百米超长水中桩基施工的关键在于成孔和混凝土灌注施工两道工序,成孔又是桩基施工之中的重中之重,直接关乎桩身垂直度及桩径,但其施工过程中可能产生塌孔,影响施工效率。基于此,论文以实际案例为基础,阐述钻孔常见问题发生原因与处理方法,探究其防塌孔技术的开展方式并分析不同方式的局限性。

The key to the construction of large-diameter 100-meter ultra-long underwater pile foundation lies in the two processes of hole formation and concrete filling construction. Hole formation is the top priority in pile foundation construction, which is directly related to the perpendicality of pile body and pile diameter. However, hole collapse may occur in the construction process and affect the construction efficiency. Based on this, on the basis of actual cases, this paper expounds the causes and treatment methods of common drilling problems,explores the ways of developing anti-collapsing hole technology and analyzes the limitations of different ways.