| 摘要 |
PURPOSE: A dual wing type rotary pile is provided to increase the diameter of a steel tube and load supporting force without an additional grouting process. CONSTITUTION: A dual wing type rotary pile comprises a steel tube(10) and a rotary wing(20). The rotary wing is spirally attached on the steel tube from the bottom thereof. The rotary wing comprises an outer rotary wing(22) and an inner rotary wing(21). The outer rotary wing is attached on the exterior of the steel tube. The inner rotary wing is attached on the interior of the steel tube. |
