重庆菜园坝长江大桥主桥上部结构施工方案

Construction Schemes for Main Bridge Superstructure of Caiyuanba Changjiang River Bridge in Chongqing

重庆菜园坝长江大桥主桥上部结构为刚构与钢箱提篮拱、钢桁梁组合结构体系桥梁,主跨420m,技术含量高,施工难度大。着重介绍该桥的刚构、钢箱提篮拱与钢桁梁的施工方案、关键施工技术及施工控制要点。

The superstructure of the main bridge with a main span 420 m of Caiyuanba Changjiang River Bridge in Chongqing is a hybrid system composed of rigid -frame structure, steel box basket handle arch and steel trusses. The bridge is technically demanding and the construction is channeling. In this paper, the construction schemes, key construction techniques and construction control of the rigid -frame structure, steel box basket handle arch and steel trusses, are mainly described.