Application of underwater photography and high strength grouting in the treatment of insufficient bearing capacity of prestressed pipe piles

RUAN Xiaofeng

doi:10.12143/j.ztgc.2021.09.012

2021 Vol. 48, No. 9

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RUAN Xiaofeng. 2021. Application of underwater photography and high strength grouting in the treatment of insufficient bearing capacity of prestressed pipe piles. DRILLING ENGINEERING, 48(9): 100-106. doi: 10.12143/j.ztgc.2021.09.012

Citation:

RUAN Xiaofeng. 2021. Application of underwater photography and high strength grouting in the treatment of insufficient bearing capacity of prestressed pipe piles. DRILLING ENGINEERING, 48(9): 100-106. doi: 10.12143/j.ztgc.2021.09.012

Application of underwater photography and high strength grouting in the treatment of insufficient bearing capacity of prestressed pipe piles

RUAN Xiaofeng

The Second Geological Prospecting Insitute of Henan, Zhengzhou Henan 450000, China

Received Date: 19 November 2020

Revised Date: 20 August 2021

Abstract

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.
- high-strength prestressed concrete pipe pile /
- insufficient bearing capacity /
- low-strain detection /
- underwater photography /
- high-strength grouting

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References

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