Journal of Zhejiang University-SCIENCE A

, Volume 2, Issue 2, pp 179–185

# Determining driving resistance with rebound of pile-top during pile driving

• Chen Ren-peng
• Hu Ya-yuan
• Chen Yun-min
Science & Engineering

## Abstract

This paper presents a method to determine driving resistance with rebound of pile-top during pile driving. The soil around the pile shaft is assumed to be rigid-plastic, while that under the pile-tip is assumed to be ideally elastoplastic. The driving force acting on the pile-top is simplified to a triangular impact force. The kinematic equation of the pile-tip is established. From the one-dimensional wave equation, the movements of the pile-tip and pile-top are determined. The rebound at the pile-top can be written in a very concise form. It is shown that the shaft resistance makes the rebound at the pile-top decrease. In particular, when the pile is very long or the soil around the pile is very stiff, the decrease is very obvious.

## Key words

pile pile driving soil resistance Smith model rebound

TU473.1+

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