苏通大桥主桥主墩钢吊箱设计及施工

Design and Construction of Steel Lifting Boxes of Main Piers of Main Bridge of Great Sutong Bridge

特大型桥梁在宽水域、深水、大流速的主桥墩区进行大型高桩承台施工中,利用钢吊箱作为基础施工围水设施。钢吊箱在工厂制作成型,气囊下水,拖轮浮运,用大型浮吊整体吊装的计与施工方法是加快施工进度,提高工程质量,保证施工安全的有效措施。

In this article,authors state steel lifting boxes which were used to be water enclosure equipment of foundation construction of large high pile cushions of an ultra-large bridge in wide water area,deep water and quick flowing speed main pier areas.They provide a new design and construction method in which steel lifting boxes are manufactured in factory,launched with air bags,transported by tugboats,and integrally lifted and installed with large floating cranes.This method can increase construction speed,improve project quality,and ensure construction safety.