| 摘要 |
PURPOSE: A head extension concrete pile type is provided to stably and easily laminate a base concrete pile and a laminated concrete pile using a pile support portion. CONSTITUTION: A head extension type concrete pile(100) comprises a base concrete pile(110), a laminated concrete pile, and a pile support(130). The base concrete pile comprises a head extension portion(111) and a column portion(113). The laminated concrete pile is laminated on to the base concrete pile and comprises a head extension portion(121) and a column portion(123). A pile support portion is located in between the base concrete pile and the laminated concrete pile and supports the base concrete pile and the laminated concrete pile. |
