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Article

Research on Dynamic Pile-Driving Formula Parameters and Driving Feasibility of Extra-Long PHC Pipe Piles

Technical Center, China Construction Sixth Engineering Bureau Corp., Ltd., Tianjin 300012, China
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Author to whom correspondence should be addressed.
Buildings 2023, 13(5), 1302; https://doi.org/10.3390/buildings13051302
Submission received: 24 March 2023 / Revised: 5 May 2023 / Accepted: 11 May 2023 / Published: 16 May 2023

Abstract

Prestressed high-strength concrete (PHC) pipe pile has the advantages of high single pile bearing capacity, a wide range of applications, good driving resistance, fast construction speed, etc. It has been widely used in high-rise buildings, bridges, ports, and other industries. The application of extra-long PHC pipe piles with a length of more than 50 m is increasing. However, there are few studies on the drivability and hammering criteria of extra-long PHC piles. To analyze the drivability of extra-long piles and predict their bearing capacity, in this paper, high-strain dynamic tests were carried out on 14 test sections with the pile foundation of Temburong Bridge in Brunei as the research background. The hammer stop control criteria calculated according to the Hiley formula would lead to excessive hammering. Three types of damage occurred during construction: pile shaft breakage, weld tearing, and pile head breakage. The weight and drop height of the piling hammer selected for this project were appropriate, and the extra-long test piles can be hammered to the design depth. The values of Cp (Compression of the pile) and n (the efficiency of the blow) were fitted based on the dynamic test data, which provided a more accurate reference for the selection of subsequent piling parameters of the project. It provides a more accurate calculation method for predicting the bearing capacity of extra-long PHC piles and provides control criteria for pile stopping and a scientific basis for their design and construction.
Keywords: PHC pipe piles; driving feasibility; dynamic pile-driving formula; high-strain dynamic test PHC pipe piles; driving feasibility; dynamic pile-driving formula; high-strain dynamic test

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MDPI and ACS Style

Liu, X.; Xiao, Y.; Zhou, J.; Ge, L.; Song, Z. Research on Dynamic Pile-Driving Formula Parameters and Driving Feasibility of Extra-Long PHC Pipe Piles. Buildings 2023, 13, 1302. https://doi.org/10.3390/buildings13051302

AMA Style

Liu X, Xiao Y, Zhou J, Ge L, Song Z. Research on Dynamic Pile-Driving Formula Parameters and Driving Feasibility of Extra-Long PHC Pipe Piles. Buildings. 2023; 13(5):1302. https://doi.org/10.3390/buildings13051302

Chicago/Turabian Style

Liu, Xiaomin, Yonggang Xiao, Junlong Zhou, Longbo Ge, and Ziwen Song. 2023. "Research on Dynamic Pile-Driving Formula Parameters and Driving Feasibility of Extra-Long PHC Pipe Piles" Buildings 13, no. 5: 1302. https://doi.org/10.3390/buildings13051302

APA Style

Liu, X., Xiao, Y., Zhou, J., Ge, L., & Song, Z. (2023). Research on Dynamic Pile-Driving Formula Parameters and Driving Feasibility of Extra-Long PHC Pipe Piles. Buildings, 13(5), 1302. https://doi.org/10.3390/buildings13051302

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