| 摘要 |
PURPOSE: A crane installation scaffold structure for construction of a road crossing structure and a scaffold forming method are provided to install a large-sized structure safely without obstructing vehicular traffic. CONSTITUTION: A scaffold for crane installation comprises a plurality of vertical posts, a launching box, and a horizontal truss(300). The vertical post is installed in a plurality of spots which does not obstruct a traffic flow. The launching box is installed in a top end portion of the vertical post, and has a box shape opened in left and right directions. A plurality of guide rollers(210) is formed within the launching box. The horizontal truss passes through the launching box. A rail is formed in a top end portion of the horizontal truss, and supports/disperses loads of a crane which will move along the rail. |
