| 摘要 |
A circular pile head assembly that can facilitate the driving of the underpinning pile in a slab using a pile driving machine and locking-off the slab load to the underpinning pile is provided. A circular pile head assembly consists of the twin beam, the circular pile head and a section of an underpinning pile that is used in conjunction with a pile driving machine to drive, and lock-off the slab load to the underpinning pile.
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