SYMPOSIA PAPER Published: 29 July 2019
STP161120170161

Field Load Test on Small Pipe Piles Driven by Vibratory Hammer

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Vibratory pile driving involves various parameters such as frequency, amplitude of displacement, and vibratory force. These parameters may influence the bearing capacity of a vibration-driven pile. To investigate the influence of the vibratory pile-driving parameters, a series of field tests was carried out. Small-sized steel pipe piles (diameter: 101.6 mm; thickness: 3.2 mm; length: 3.5 m) were installed by a vibratory hammer with different vibratory pile-driving parameters in a narrow test site of sandy ground, and static load tests of the piles were carried out. The bearing capacity of the piles varied largely because of the different vibratory pile-driving parameters. The pile shaft resistance became high when the pile was driven in the condition of small amplitude of displacement, high frequency, and small vibratory force. It was found that the pile shaft resistance after vibratory pile driving may be closely related to the accumulated shear work during the pile installation.

Author Information

Moriyasu, Shunsuke
Nippon Steel and Sumitomo Metal Corp., Steel Structures Research Lab., Futtsu, Chiba, JP
Kobayashi, Shun-ichi
Kanazawa University, Graduate School of Natural Science and Technology, Kanazawa, JP
Matsumoto, Tatsunori
Kanazawa University, Graduate School of Natural Science and Technology, Kanazawa, JP
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Details
Developed by Committee: D18
Pages: 450–467
DOI: 10.1520/STP161120170161
ISBN-EB: 978-0-8031-7668-3
ISBN-13: 978-0-8031-7667-6