| 摘要 |
PURPOSE: A long span steel structure, a construction device, and a method thereof are provided to construct a long span structure without using a large crane. CONSTITUTION: The construction method of a long span steel structure(80) comprises the following steps. A plurality of parallel rails(20) are installed on the top end of an existing structure from a lifting position to an installing position(81). An assembling area is built around the existing structure for assembling the long span steel structure. The long span steel structure is lifted to the lifting position and settled in a holder. The long span steel structure is positioned in the lifting position by repeating the above steps, is connected by a purlin, and is integrally pushed to the installing position by an extrusion device(23). The long span steel structure in the installing position is joined to the existing structure for completing the installation. |
