| 摘要 |
PURPOSE:To obtain a drill steel tube pile which can reasonably stand horizontal and vertical loads by using a pile with a spiral rib as a mid connector. CONSTITUTION:The tip of a pile with open end is shaped into a cylindrical or conical form, and continuous or discontinuous spiral ribs 2 and 2' are provided for both inner and outer face. The lower end of the pile 1 is matched with the upper end diameter of the lower pile for mid connection. An economical pile which can reasonably withstand horizontal and vertical loads can thus be obtained.
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