| 摘要 |
Disclosed is a construction method capable of reducing an amount of a steel material used by reducing a stress burden to a steel girder and improving stress efficiency by additionally applying a compressive force to lower casing concrete when manufacturing a prestressed steel composite girder bridge. To achieve this, provided is the construction method of the prestressed steel composite girder bridge including: a step of forming a steel girder assembly; a step of fixating a temporary reinforcing steel plate to an upper flange of the steel girder assembly; a step of installing casing concrete with an anchorage device and a PC steel material in a lower flange of the steel girder assembly; a step of separating the temporary reinforcing steel plate from the steel girder assembly; a step of applying prestress by applying tension to the PC steel material; and a step of placing the steel girder assembly on an abutment and piers. According to the present invention, the stress efficiency can be improved by reducing the amount of the steel material used and additionally applying the compressive force. |
