ABSTRACT
The pile penetration movement is typically measured manually by field workers during pile driving. Manual measurement method may lead to potential risks to workers’ health and safety as well as issues with measurement accuracy dependent on the operators and ground vibration. In this study, in order to address these issues, a non-contact pile penetration movement measuring device was developed and applicability was evaluated. In addition, a method to improve the reliability of the pile driving formulas was reviewed by using the values measured by the development device and the results of the dynamic load test. As a result, it is essential to accurately measure the hammer energy delivered to the pile, as well as the set value and rebound movement of pile in order to increase the reliability of the bearing capacity predicted by the pile driving formulas. Furthermore, the bearing capacity of pile obtained from the dynamic load test can be used to improve the reliability of the bearing capacity calculated by the pile driving formulas.
