双钓鱼法在分片架设40m公路大跨度桥梁上的应用

The Application of Double-fishing Method in Erecting 40-meter Large-span Highway Beam by Piece

用双钓鱼法架设黄砂大桥单片40m大跨度梁．包括如何提高单片梁在架设时的横向刚度、横移梁必须采取的措施以及钢扒杆的计算等。

The characteristics of double-fishing method in erecting 40-meter large-spanbeam on Huangsha highway bridge by pieces are introduced,including how to improve the lateralrigidity when simple piece beam is erected,the esscntial measures taken to move girder laterally,the calculation of steel derrick and so on.