| 摘要 |
PURPOSE: A concrete-filled tube type rotary pile is provided to firmly fix a rotary pile because the inside and outside of a pile body can be simultaneously grouted by installing mortar discharge tubes on the pile body at predetermined intervals. CONSTITUTION: A concrete-filled tube type rotary pile comprises a pile body(10), rotary wings(20), mortar discharge tubes(30), and stoppers. The rotary wings are spirally attached on the exterior of the pile body at predetermined intervals. The mortar discharge tubes are communicated with the pile body to discharge cement mortar charged inside the pile body. The mortar discharge tubes are arranged to be upwardly inclined along the top of the rotary wings and is curved along the exterior of the pile body. The stoppers block up the exit of the mortar discharge tubes. |
