MANUFACTURING METHOD OF WINGED PILE AND DESIGN METHOD: Fid-Bau Portal

MANUFACTURING METHOD OF WINGED PILE AND DESIGN METHOD

ICHIKAWA KAZUOMI

To provide a manufacturing method of a winged pile with high performance with less joint failure and stress concentration when joining a pseudo-helical blade or a flat plate blade to a pipe end, and a design method.SOLUTION: A manufacturing method of a winged pile 1 is a manufacturing method of a winged pile 1 with a flat plate blade 5 or a pseudo-helical blade having a diameter larger than the diameter of a tube, which is attached in an axially inclined state with respect to the central axis of the tube at the tip surface of the cylindrical tube. The method includes: an inclined end face formation step of forming a radially inclined end face 7 which is axially inclined as well as radially inclined at the tip surface of the tube in contact with the flat plate blade 5 or the pseudo-helical blade; and a wing joining step of joining with the upper surface of the flat plate blade 5 or the pseudo-helical blade in contact with the inclined end surface 7. The inclined end face formation step forms the inclined end face so that the upper surface of flat plate blade 5 or the pseudo-helical blade fully comes into contact with the inclined end surface in the plate thickness direction due to a change of the radial inclination angle of the inclined end face 7 depending on the circumferential position.SELECTED DRAWING: Figure 1

【課題】疑似螺旋翼や平板翼を管端部に接合するに際して接合不良や応力集中が生じにくく性能の高い翼付き杭の製造方法及び設計方法を提供する。【解決手段】本発明に係る翼付き杭１の製造方法は、円筒状の管の先端面に、前記管の直径より大きな直径を持った平板翼５又は疑似螺旋翼を、管の中心軸に対して傾斜する軸方向傾斜した状態で取り付けた翼付き杭１の製造方法であって、平板翼５又は前記疑似螺旋翼の上面と当接する前記管の先端面に、前記軸方向傾斜すると共に径方向の傾斜である径方向傾斜した傾斜端面７を形成する傾斜端面形成ステップと、傾斜端面７に平板翼５又は前記疑似螺旋翼の上面を当接させて接合する翼接合ステップとを備え、前記傾斜端面形成ステップは、傾斜端面７が周方向の位置によって径方向の傾斜角度が変化することで、平板翼５又は前記疑似螺旋翼の上面と前記傾斜端面の板厚方向の全面で当接するように形成する。【選択図】図１

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