Enhancing Quality Management of PHC Piles through Improved Driving Formulas: A Comprehensive Review and Analysis

被引:0
|
作者
Kim, Gunwoong [1 ]
Seo, Seunghwan [1 ]
Kim, Juhyong [1 ]
Choi, Changho [1 ]
Chung, Moonkyung [1 ]
机构
[1] Korea Inst Civil Engn & Bldg Technol, Dept Geotech Engn Res, Goyang 10223, South Korea
来源
APPLIED SCIENCES-BASEL | 2024年 / 14卷 / 15期
关键词
pile driving formula; Hiley formula; Gates formula; dynamic load test; PHC pile; pre-bored pile; bearing capacity; BEARING CAPACITY;
D O I
10.3390/app14156770
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In construction projects, conducting dynamic load tests on all piles proves impractical. Selective testing estimates bearing capacity, while the remaining piles rely on penetration depth for management. This approach, however, faces reliability issues due to varying conditions among piles. Technological advancements, such as non-contact hammers and sensors, have enhanced the accuracy of penetration depth measurements during final driving. Nonetheless, relying solely on penetration depth for construction and quality management remains problematic. This study, therefore, focuses on enhancing the use of driving formulas to improve pile quality management, particularly for the widely used pre-stressed high-strength concrete (PHC) piles. To improve pile quality management, existing driving formulas underwent review and refinement. Utilizing 258 dynamic load test data from various sites, the Hiley, Gates, and Danish formulas underwent validation through statistical analysis and graphical comparison. Enhancements to the Gates formula, achieved through curve fitting with actual data and the application of segment-based coefficients, demonstrated increased accuracy in bearing capacity estimation. These improvements offer a more reliable approach to pile quality management in construction projects.
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页数:16
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