阐述了在上海证券大厦工程施工中，采取的以南北塔楼为支架，整体提升在地面拼装好的1200余吨钢天桥的吊装工艺。
The article explains the hoisting process & lifting integrally over 1200 tons steel overpass bridge installed on the ground by means of south and north tower buildings as supporting in the construction of Shanghai Securities Mansion project .
上海证券大厦