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    • 15. 发明专利
    • PILE FOR CIVIL ENGINEERING WORK
    • JPH11323923A
    • 1999-11-26
    • JP9817399
    • 1999-04-05
    • FUJITA YASUHIRO
    • FUJITA YASUHIRO
    • E02D5/54E02D5/80
    • PROBLEM TO BE SOLVED: To keep the stable state of a pile in the ground by fitting core bodies arranged with multiple wedge bodies formed into an acute angle shape at the tip and different in length so that the wedge bodies are made shorter as they approach the inner walls of pile bodies into the pile bodies formed into a conical or angular shape at one end and provided with multiple opening sections on the side wall. SOLUTION: A pile main body 1 for civil engineering work is constituted of a leading pile body 2 formed into a conical or angular shape at the tip and opened at the other end and a joint pile body 2' formed with a coupling section with the leading pile body 2 at one end and a connection section on an opening edge section at the other end, and multiple opening sections 4 are provided on the side wall. Multiple wedge bodies 6 formed into an acute angle shape at the tip and different in length are fitted to core bodies 5, 5' fitted to the leading pile body 2 and the joint pile body 2' respectively so that the length of the wedge bodies 6 is made shorter as they approach the inner walls of the pile bodies 2, 2'. When the pile main body 1 fitted with the core bodies 5, 5' is driven into the ground and the core body 5' is pushed, a middle drive body 7 provided in the core body 5' pushes the core body 5, and the wedge bodies 6 are protruded into the ground from the opening sections 4. The pile main body 1 can keep its stable state as if it takes root in the ground.