VIBRATION AUXILIARY DEVICE AND CONSTRUCTION METHOD

To provide a device for assisting construction of steel pipes through vibration by using a pile press-in machine, in which a function of the pile press-in machine is not impaired by vibration.SOLUTION: A vibration auxiliary device (10) that generates vibration to assist construction of steel pipes (P) by using a pile press-in machine includes: a vibration generating machine (1); a steel pipe chuck (5) that is connected to a lower side of the vibration generating machine (1) and can press and grip the steel pipes (P) from an inner side; a column part (4) that is connected to an upper side of the vibration generating machine (1) and extends upward; a cylindrical body (2A) that is arranged at an interval around the column part (4) and can be gripped by the pile press-in machine; and buffer members (3) that connect an outer surface of the column part (4) and an inner surface of the cylindrical body (2A) and has a vibration transmission prevention function.SELECTED DRAWING: Figure 1 【課題】杭圧入機による鋼管の施工を、振動により補助するための装置であって、杭圧入機の機能が振動により損なわれない装置を提供する。【解決手段】杭圧入機による鋼管（Ｐ）の施工を補助するために振動を発生する振動補助装置（１０）であって、起振機（１）と、前記起振機（１）の下側に接合されかつ前記鋼管（Ｐ）を内側から押圧把持可能な鋼管チャック（５）と、前記起振機（１）の上側に接合され上方に延在する支柱部（４）と、前記支柱部（４）の周囲に間隔を空けて配置されかつ前記杭圧入機により把持可能な筒体（２Ａ）と、前記支柱部（４）の外面と前記筒体（２Ａ）の内面とを連結しかつ振動伝達防止機能を有する緩衝部材（３）と、を備える。【選択図】図１